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Build Information

Failed to build SimpleCalendar, reference v1.0.0 (1c9cef), with Swift 6.1 for macOS (Xcode) using Xcode 16.3 on 27 Apr 2025 21:02:55 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme SimpleCalendar -destination platform=macOS,arch=arm64

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/ppeelen/SimpleCalendar.git
Reference: v1.0.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/ppeelen/SimpleCalendar
 * tag               v1.0.0     -> FETCH_HEAD
HEAD is now at 1c9cef5 Dropped the Swift tools version to 5.8 to support non-beta products
Cloned https://github.com/ppeelen/SimpleCalendar.git
Revision (git rev-parse @):
1c9cef5b6fe9153fbde2db65b6ae9dc225881471
SUCCESS checkout https://github.com/ppeelen/SimpleCalendar.git at v1.0.0
========================================
Build
========================================
Selected platform:         macosXcodebuild
Swift version:             6.1
Building package at path:  $PWD
https://github.com/ppeelen/SimpleCalendar.git
https://github.com/ppeelen/SimpleCalendar.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "SimpleCalendar",
  "name" : "SimpleCalendar",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "16.0"
    }
  ],
  "products" : [
    {
      "name" : "SimpleCalendar",
      "targets" : [
        "SimpleCalendar"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "SimpleCalendarTests",
      "module_type" : "SwiftTarget",
      "name" : "SimpleCalendarTests",
      "path" : "Tests/SimpleCalendarTests",
      "sources" : [
        "SimpleCalendarTests.swift"
      ],
      "target_dependencies" : [
        "SimpleCalendar"
      ],
      "type" : "test"
    },
    {
      "c99name" : "SimpleCalendar",
      "module_type" : "SwiftTarget",
      "name" : "SimpleCalendar",
      "path" : "Sources/SimpleCalendar",
      "product_memberships" : [
        "SimpleCalendar"
      ],
      "sources" : [
        "Entities/CalendarActivity.swift",
        "Entities/CalendarEvent.swift",
        "Extensions/Date+Formatting.swift",
        "Extensions/File.swift",
        "SimpleCalendarView.swift",
        "Views/CalendarContentView.swift",
        "Views/CalendarPageView.swift",
        "Views/CalendarTimelineView.swift",
        "Views/EventDetailsView.swift",
        "Views/EventView.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.8"
}
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
Resolve Package Graph
Resolved source packages:
  SimpleCalendar: /Users/admin/builder/spi-builder-workspace
resolved source packages: SimpleCalendar
{
  "dependencies" : [
  ],
  "manifest_display_name" : "SimpleCalendar",
  "name" : "SimpleCalendar",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "16.0"
    }
  ],
  "products" : [
    {
      "name" : "SimpleCalendar",
      "targets" : [
        "SimpleCalendar"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "SimpleCalendarTests",
      "module_type" : "SwiftTarget",
      "name" : "SimpleCalendarTests",
      "path" : "Tests/SimpleCalendarTests",
      "sources" : [
        "SimpleCalendarTests.swift"
      ],
      "target_dependencies" : [
        "SimpleCalendar"
      ],
      "type" : "test"
    },
    {
      "c99name" : "SimpleCalendar",
      "module_type" : "SwiftTarget",
      "name" : "SimpleCalendar",
      "path" : "Sources/SimpleCalendar",
      "product_memberships" : [
        "SimpleCalendar"
      ],
      "sources" : [
        "Entities/CalendarActivity.swift",
        "Entities/CalendarEvent.swift",
        "Extensions/Date+Formatting.swift",
        "Extensions/File.swift",
        "SimpleCalendarView.swift",
        "Views/CalendarContentView.swift",
        "Views/CalendarPageView.swift",
        "Views/CalendarTimelineView.swift",
        "Views/EventDetailsView.swift",
        "Views/EventView.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.8"
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "SimpleCalendar"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme SimpleCalendar -destination platform=macOS,arch=arm64 OTHER_SWIFT_FLAGS=-stats-output-dir .stats -strict-concurrency=complete -enable-upcoming-feature StrictConcurrency -enable-upcoming-feature DisableOutwardActorInference -enable-upcoming-feature GlobalActorIsolatedTypesUsability -enable-upcoming-feature InferSendableFromCaptures
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath /Users/admin/builder/spi-builder-workspace/.derivedData build -scheme SimpleCalendar -destination platform=macOS,arch=arm64 "OTHER_SWIFT_FLAGS=-stats-output-dir .stats -strict-concurrency=complete -enable-upcoming-feature StrictConcurrency -enable-upcoming-feature DisableOutwardActorInference -enable-upcoming-feature GlobalActorIsolatedTypesUsability -enable-upcoming-feature InferSendableFromCaptures"
Build settings from command line:
    OTHER_SWIFT_FLAGS = -stats-output-dir .stats -strict-concurrency=complete -enable-upcoming-feature StrictConcurrency -enable-upcoming-feature DisableOutwardActorInference -enable-upcoming-feature GlobalActorIsolatedTypesUsability -enable-upcoming-feature InferSendableFromCaptures
Resolve Package Graph
Resolved source packages:
  SimpleCalendar: /Users/admin/builder/spi-builder-workspace
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (2 targets)
    Target 'SimpleCalendar' in project 'SimpleCalendar'
        ➜ Explicit dependency on target 'SimpleCalendar' in project 'SimpleCalendar'
    Target 'SimpleCalendar' in project 'SimpleCalendar' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -isysroot /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc --version
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld -version_details
ReadFileContents /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/share/docc/features.json
Build description signature: ef12154b07a7cb9bceae127be71862e0
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/ef12154b07a7cb9bceae127be71862e0.xcbuilddata
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products
ClangStatCache /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.4-24E241-8287b8f5db97e746a1562fbca0c9d29b.sdkstatcache
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk -o /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.4-24E241-8287b8f5db97e746a1562fbca0c9d29b.sdkstatcache
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/EagerLinkingTBDs/Debug
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/EagerLinkingTBDs/Debug
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/PackageFrameworks
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/PackageFrameworks
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/SimpleCalendar.modulemap (in target 'SimpleCalendar' from project 'SimpleCalendar')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/SimpleCalendar.modulemap
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/SimpleCalendar.DependencyMetadataFileList (in target 'SimpleCalendar' from project 'SimpleCalendar')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/SimpleCalendar.DependencyMetadataFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/SimpleCalendar.DependencyStaticMetadataFileList (in target 'SimpleCalendar' from project 'SimpleCalendar')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/SimpleCalendar.DependencyStaticMetadataFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/Objects-normal/arm64/SimpleCalendar.SwiftConstValuesFileList (in target 'SimpleCalendar' from project 'SimpleCalendar')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/Objects-normal/arm64/SimpleCalendar.SwiftConstValuesFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/Objects-normal/arm64/SimpleCalendar.LinkFileList (in target 'SimpleCalendar' from project 'SimpleCalendar')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/Objects-normal/arm64/SimpleCalendar.LinkFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/Objects-normal/arm64/SimpleCalendar.SwiftFileList (in target 'SimpleCalendar' from project 'SimpleCalendar')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/Objects-normal/arm64/SimpleCalendar.SwiftFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/Objects-normal/arm64/SimpleCalendar_const_extract_protocols.json (in target 'SimpleCalendar' from project 'SimpleCalendar')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/Objects-normal/arm64/SimpleCalendar_const_extract_protocols.json
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/Objects-normal/arm64/SimpleCalendar-OutputFileMap.json (in target 'SimpleCalendar' from project 'SimpleCalendar')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/Objects-normal/arm64/SimpleCalendar-OutputFileMap.json
Copy /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/GeneratedModuleMaps/SimpleCalendar.modulemap /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/SimpleCalendar.modulemap (in target 'SimpleCalendar' from project 'SimpleCalendar')
    cd /Users/admin/builder/spi-builder-workspace
    builtin-copy -exclude .DS_Store -exclude CVS -exclude .svn -exclude .git -exclude .hg -resolve-src-symlinks /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/SimpleCalendar.modulemap /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/GeneratedModuleMaps
SwiftDriver SimpleCalendar normal arm64 com.apple.xcode.tools.swift.compiler (in target 'SimpleCalendar' from project 'SimpleCalendar')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-SwiftDriver -- /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc -module-name SimpleCalendar -Onone -enforce-exclusivity\=checked @/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/Objects-normal/arm64/SimpleCalendar.SwiftFileList -DSWIFT_PACKAGE -DDEBUG -stats-output-dir .stats -strict-concurrency\=complete -enable-upcoming-feature StrictConcurrency -enable-upcoming-feature DisableOutwardActorInference -enable-upcoming-feature GlobalActorIsolatedTypesUsability -enable-upcoming-feature InferSendableFromCaptures -plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -enable-experimental-feature DebugDescriptionMacro -sdk /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk -target arm64-apple-macos10.13 -g -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -Xfrontend -serialize-debugging-options -profile-coverage-mapping -profile-generate -enable-testing -index-store-path /Users/admin/builder/spi-builder-workspace/.derivedData/Index.noindex/DataStore -swift-version 5 -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -I /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -F /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -c -j10 -enable-batch-mode -incremental -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.4-24E241-8287b8f5db97e746a1562fbca0c9d29b.sdkstatcache -output-file-map /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/Objects-normal/arm64/SimpleCalendar-OutputFileMap.json -use-frontend-parseable-output -save-temps -no-color-diagnostics -serialize-diagnostics -emit-dependencies -emit-module -emit-module-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/Objects-normal/arm64/SimpleCalendar.swiftmodule -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/swift-overrides.hmap -emit-const-values -Xfrontend -const-gather-protocols-file -Xfrontend /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/Objects-normal/arm64/SimpleCalendar_const_extract_protocols.json -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -emit-objc-header -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/Objects-normal/arm64/SimpleCalendar-Swift.h -working-directory /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -experimental-emit-module-separately -disable-cmo
SwiftEmitModule normal arm64 Emitting\ module\ for\ SimpleCalendar (in target 'SimpleCalendar' from project 'SimpleCalendar')
EmitSwiftModule normal arm64 (in target 'SimpleCalendar' from project 'SimpleCalendar')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:40:23: error: 'Color' is only available in macOS 10.15 or newer
    public let color: Color
                      ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:38:15: note: add @available attribute to enclosing struct
public struct ActivityType: Codable {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:42:38: error: 'Color' is only available in macOS 10.15 or newer
    public init(name: String, color: Color) {
                                     ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:42:12: note: add @available attribute to enclosing initializer
    public init(name: String, color: Color) {
           ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:38:15: note: add @available attribute to enclosing struct
public struct ActivityType: Codable {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:51:16: error: 'Color' is only available in macOS 10.15 or newer
        color: Color = [.yellow, .red, .green, .blue].randomElement()!
               ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:49:17: note: add @available attribute to enclosing static method
    static func forPreview(
                ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:48:10: note: add @available attribute to enclosing extension
internal extension ActivityType {
         ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:51:26: error: 'yellow' is only available in macOS 10.15 or newer
        color: Color = [.yellow, .red, .green, .blue].randomElement()!
                         ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:49:17: note: add @available attribute to enclosing static method
    static func forPreview(
                ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:48:10: note: add @available attribute to enclosing extension
internal extension ActivityType {
         ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:51:35: error: 'red' is only available in macOS 10.15 or newer
        color: Color = [.yellow, .red, .green, .blue].randomElement()!
                                  ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:49:17: note: add @available attribute to enclosing static method
    static func forPreview(
                ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:48:10: note: add @available attribute to enclosing extension
internal extension ActivityType {
         ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:51:41: error: 'green' is only available in macOS 10.15 or newer
        color: Color = [.yellow, .red, .green, .blue].randomElement()!
                                        ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:49:17: note: add @available attribute to enclosing static method
    static func forPreview(
                ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:48:10: note: add @available attribute to enclosing extension
internal extension ActivityType {
         ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:51:49: error: 'blue' is only available in macOS 10.15 or newer
        color: Color = [.yellow, .red, .green, .blue].randomElement()!
                                                ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:49:17: note: add @available attribute to enclosing static method
    static func forPreview(
                ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:48:10: note: add @available attribute to enclosing extension
internal extension ActivityType {
         ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Extensions/File.swift:15:23: error: 'Color' is only available in macOS 10.15 or newer
fileprivate extension Color {
                      ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Extensions/File.swift:15:13: note: add @available attribute to enclosing extension
fileprivate extension Color {
            ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Extensions/File.swift:43:11: error: 'Color' is only available in macOS 10.15 or newer
extension Color: Codable {
          ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Extensions/File.swift:43:1: note: add @available attribute to enclosing extension
extension Color: Codable {
^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:32:62: error: 'View' is only available in macOS 10.15 or newer
    case customSheet((any CalendarEventRepresentable) -> any View)
                                                             ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:9:13: note: add @available attribute to enclosing enum
public enum SelectionAction {
            ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:45:62: error: 'View' is only available in macOS 10.15 or newer
    case destination((any CalendarEventRepresentable) -> any View)
                                                             ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:9:13: note: add @available attribute to enclosing enum
public enum SelectionAction {
            ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:75:6: error: 'Binding' is only available in macOS 10.15 or newer
    @Binding var events: [any CalendarEventRepresentable]
     ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:73:15: note: add @available attribute to enclosing struct
public struct SimpleCalendarView: View {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:76:6: error: 'Binding' is only available in macOS 10.15 or newer
    @Binding var selectedDate: Date
     ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:73:15: note: add @available attribute to enclosing struct
public struct SimpleCalendarView: View {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:78:6: error: 'State' is only available in macOS 10.15 or newer
    @State private var visibleEvents: [any CalendarEventRepresentable]
     ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:73:15: note: add @available attribute to enclosing struct
public struct SimpleCalendarView: View {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:79:6: error: 'State' is only available in macOS 10.15 or newer
    @State private var hourHeight: Double
     ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:73:15: note: add @available attribute to enclosing struct
public struct SimpleCalendarView: View {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:80:6: error: 'State' is only available in macOS 10.15 or newer
    @State private var hourSpacing: Double
     ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:73:15: note: add @available attribute to enclosing struct
public struct SimpleCalendarView: View {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:96:17: error: 'Binding' is only available in macOS 10.15 or newer
        events: Binding<[any CalendarEventRepresentable]>,
                ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:95:12: note: add @available attribute to enclosing initializer
    public init(
           ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:73:15: note: add @available attribute to enclosing struct
public struct SimpleCalendarView: View {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:97:23: error: 'Binding' is only available in macOS 10.15 or newer
        selectedDate: Binding<Date>,
                      ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:95:12: note: add @available attribute to enclosing initializer
    public init(
           ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:73:15: note: add @available attribute to enclosing struct
public struct SimpleCalendarView: View {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:145:27: error: 'View' is only available in macOS 10.15 or newer
    public var body: some View {
                          ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:145:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:73:15: note: add @available attribute to enclosing struct
public struct SimpleCalendarView: View {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:259:31: error: 'View' is only available in macOS 10.15 or newer
    static var previews: some View {
                              ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:259:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:258:8: note: add @available attribute to enclosing struct
struct ScheduleView_Previews: PreviewProvider {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarContentView.swift:9:6: error: 'Binding' is only available in macOS 10.15 or newer
    @Binding var events: [any CalendarEventRepresentable]
     ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarContentView.swift:8:8: note: add @available attribute to enclosing struct
struct CalendarContentView: View {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarContentView.swift:15:27: error: 'View' is only available in macOS 10.15 or newer
    public var body: some View {
                          ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarContentView.swift:15:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarContentView.swift:8:8: note: add @available attribute to enclosing struct
struct CalendarContentView: View {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarContentView.swift:33:31: error: 'View' is only available in macOS 10.15 or newer
    static var previews: some View {
                              ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarContentView.swift:33:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarContentView.swift:32:8: note: add @available attribute to enclosing struct
struct CalendarContentView_Previews: PreviewProvider {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarPageView.swift:12:6: error: 'Binding' is only available in macOS 10.15 or newer
    @Binding var hourSpacing: Double
     ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarPageView.swift:10:8: note: add @available attribute to enclosing struct
struct CalendarPageView: View {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarPageView.swift:13:6: error: 'Binding' is only available in macOS 10.15 or newer
    @Binding var hourHeight: Double
     ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarPageView.swift:10:8: note: add @available attribute to enclosing struct
struct CalendarPageView: View {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarPageView.swift:15:20: error: 'View' is only available in macOS 10.15 or newer
    var body: some View {
                   ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarPageView.swift:15:9: note: add @available attribute to enclosing property
    var body: some View {
        ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarPageView.swift:10:8: note: add @available attribute to enclosing struct
struct CalendarPageView: View {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarPageView.swift:38:31: error: 'View' is only available in macOS 10.15 or newer
    static var previews: some View {
                              ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarPageView.swift:38:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarPageView.swift:37:8: note: add @available attribute to enclosing struct
struct CalendarPageView_Previews: PreviewProvider {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarTimelineView.swift:16:31: error: 'publish(every:tolerance:on:in:options:)' is only available in macOS 10.15 or newer
    private let timer = Timer.publish(every: 60, on: .main, in: .common).autoconnect()
                              ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarTimelineView.swift:9:8: note: add @available attribute to enclosing struct
struct CalendarTimelineView: View {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarTimelineView.swift:16:74: error: 'autoconnect()' is only available in macOS 10.15 or newer
    private let timer = Timer.publish(every: 60, on: .main, in: .common).autoconnect()
                                                                         ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarTimelineView.swift:9:8: note: add @available attribute to enclosing struct
struct CalendarTimelineView: View {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarTimelineView.swift:11:6: error: 'Binding' is only available in macOS 10.15 or newer
    @Binding var hourSpacing: Double
     ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarTimelineView.swift:9:8: note: add @available attribute to enclosing struct
struct CalendarTimelineView: View {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarTimelineView.swift:12:6: error: 'Binding' is only available in macOS 10.15 or newer
    @Binding var hourHeight: Double
     ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarTimelineView.swift:9:8: note: add @available attribute to enclosing struct
struct CalendarTimelineView: View {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarTimelineView.swift:13:6: error: 'State' is only available in macOS 10.15 or newer
    @State private var timelineOffset: Double = 0
     ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarTimelineView.swift:9:8: note: add @available attribute to enclosing struct
struct CalendarTimelineView: View {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarTimelineView.swift:18:20: error: 'View' is only available in macOS 10.15 or newer
    var body: some View {
                   ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarTimelineView.swift:18:9: note: add @available attribute to enclosing property
    var body: some View {
        ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarTimelineView.swift:9:8: note: add @available attribute to enclosing struct
struct CalendarTimelineView: View {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarTimelineView.swift:46:31: error: 'View' is only available in macOS 10.15 or newer
    static var previews: some View {
                              ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarTimelineView.swift:46:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarTimelineView.swift:45:8: note: add @available attribute to enclosing struct
struct CalendarTimelineView_Previews: PreviewProvider {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventDetailsView.swift:12:20: error: 'View' is only available in macOS 10.15 or newer
    var body: some View {
                   ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventDetailsView.swift:12:9: note: add @available attribute to enclosing property
    var body: some View {
        ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventDetailsView.swift:9:8: note: add @available attribute to enclosing struct
struct EventDetailsView: View {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventDetailsView.swift:58:31: error: 'View' is only available in macOS 10.15 or newer
    static var previews: some View {
                              ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventDetailsView.swift:58:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventDetailsView.swift:57:8: note: add @available attribute to enclosing struct
struct EventDetailsView_Previews: PreviewProvider {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventView.swift:15:6: error: 'State' is only available in macOS 10.15 or newer
    @State private var showEventSheet = false
     ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventView.swift:10:8: note: add @available attribute to enclosing struct
struct EventView: View {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventView.swift:17:20: error: 'View' is only available in macOS 10.15 or newer
    var body: some View {
                   ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventView.swift:17:9: note: add @available attribute to enclosing property
    var body: some View {
        ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventView.swift:10:8: note: add @available attribute to enclosing struct
struct EventView: View {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventView.swift:51:31: error: 'View' is only available in macOS 10.15 or newer
    private var content: some View {
                              ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventView.swift:51:17: note: add @available attribute to enclosing property
    private var content: some View {
                ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventView.swift:10:8: note: add @available attribute to enclosing struct
struct EventView: View {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventView.swift:151:31: error: 'View' is only available in macOS 10.15 or newer
    static var previews: some View {
                              ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventView.swift:151:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventView.swift:150:8: note: add @available attribute to enclosing struct
struct EventView_Previews: PreviewProvider {
       ^
Failed frontend command:
/Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend -frontend -emit-module -experimental-skip-non-inlinable-function-bodies-without-types /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarEvent.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Extensions/Date+Formatting.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Extensions/File.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarContentView.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarPageView.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarTimelineView.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventDetailsView.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventView.swift -target arm64-apple-macos10.13 -Xllvm -aarch64-use-tbi -enable-objc-interop -sdk /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -I /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -F /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -no-color-diagnostics -enable-testing -g -debug-info-format\=dwarf -dwarf-version\=4 -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -profile-generate -profile-coverage-mapping -swift-version 5 -enforce-exclusivity\=checked -stats-output-dir /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode/.stats -Onone -D SWIFT_PACKAGE -D DEBUG -serialize-debugging-options -const-gather-protocols-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/Objects-normal/arm64/SimpleCalendar_const_extract_protocols.json -enable-upcoming-feature StrictConcurrency -enable-upcoming-feature DisableOutwardActorInference -enable-upcoming-feature GlobalActorIsolatedTypesUsability -enable-upcoming-feature InferSendableFromCaptures -enable-experimental-feature DebugDescriptionMacro -strict-concurrency\=complete -empty-abi-descriptor -plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -working-directory -Xcc /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -resource-dir /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift -enable-anonymous-context-mangled-names -file-compilation-dir /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.4-24E241-8287b8f5db97e746a1562fbca0c9d29b.sdkstatcache -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/swift-overrides.hmap -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -module-name SimpleCalendar -frontend-parseable-output -disable-clang-spi -target-sdk-version 15.4 -target-sdk-name macosx15.4 -external-plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins\#/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -external-plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/local/lib/swift/host/plugins\#/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -in-process-plugin-server-path /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/libSwiftInProcPluginServer.dylib -plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins -plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/local/lib/swift/host/plugins -emit-module-doc-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/Objects-normal/arm64/SimpleCalendar.swiftdoc -emit-module-source-info-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/Objects-normal/arm64/SimpleCalendar.swiftsourceinfo -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/Objects-normal/arm64/SimpleCalendar-Swift.h -serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/Objects-normal/arm64/SimpleCalendar-master-emit-module.dia -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/Objects-normal/arm64/SimpleCalendar-master-emit-module.d -o /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/Objects-normal/arm64/SimpleCalendar.swiftmodule -emit-abi-descriptor-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/Objects-normal/arm64/SimpleCalendar.abi.json
SwiftCompile normal arm64 Compiling\ CalendarTimelineView.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarTimelineView.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarTimelineView.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 Compiling\ SimpleCalendarView.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 Compiling\ EventView.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventView.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventView.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 Compiling\ Date+Formatting.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Extensions/Date+Formatting.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Extensions/Date+Formatting.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 Compiling\ File.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Extensions/File.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Extensions/File.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 Compiling\ EventDetailsView.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventDetailsView.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventDetailsView.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 Compiling\ CalendarEvent.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarEvent.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarEvent.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 Compiling\ CalendarActivity.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 Compiling\ CalendarPageView.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarPageView.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarPageView.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 Compiling\ CalendarContentView.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarContentView.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
Command SwiftCompile failed with a nonzero exit code
--- xcodebuild: WARNING: Using the first of multiple matching destinations:
{ platform:macOS, arch:arm64, id:3678c7a802501fa94c470d9f64bd6a9c7d1927ce, name:My Mac }
{ platform:macOS, arch:arm64, variant:Mac Catalyst, id:3678c7a802501fa94c470d9f64bd6a9c7d1927ce, name:My Mac }
{ platform:macOS, arch:arm64, variant:DriverKit, id:3678c7a802501fa94c470d9f64bd6a9c7d1927ce, name:My Mac }
{ platform:macOS, arch:arm64, variant:Designed for [iPad,iPhone], id:3678c7a802501fa94c470d9f64bd6a9c7d1927ce, name:My Mac }
** BUILD FAILED **
The following build commands failed:
	EmitSwiftModule normal arm64 (in target 'SimpleCalendar' from project 'SimpleCalendar')
	SwiftEmitModule normal arm64 Emitting\ module\ for\ SimpleCalendar (in target 'SimpleCalendar' from project 'SimpleCalendar')
	SwiftCompile normal arm64 Compiling\ CalendarContentView.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarContentView.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
	Building workspace spi-builder-workspace with scheme SimpleCalendar
(4 failures)
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
Resolved source packages:
  SimpleCalendar: /Users/admin/builder/spi-builder-workspace
resolved source packages: SimpleCalendar
{
  "dependencies" : [
  ],
  "manifest_display_name" : "SimpleCalendar",
  "name" : "SimpleCalendar",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "16.0"
    }
  ],
  "products" : [
    {
      "name" : "SimpleCalendar",
      "targets" : [
        "SimpleCalendar"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "SimpleCalendarTests",
      "module_type" : "SwiftTarget",
      "name" : "SimpleCalendarTests",
      "path" : "Tests/SimpleCalendarTests",
      "sources" : [
        "SimpleCalendarTests.swift"
      ],
      "target_dependencies" : [
        "SimpleCalendar"
      ],
      "type" : "test"
    },
    {
      "c99name" : "SimpleCalendar",
      "module_type" : "SwiftTarget",
      "name" : "SimpleCalendar",
      "path" : "Sources/SimpleCalendar",
      "product_memberships" : [
        "SimpleCalendar"
      ],
      "sources" : [
        "Entities/CalendarActivity.swift",
        "Entities/CalendarEvent.swift",
        "Extensions/Date+Formatting.swift",
        "Extensions/File.swift",
        "SimpleCalendarView.swift",
        "Views/CalendarContentView.swift",
        "Views/CalendarPageView.swift",
        "Views/CalendarTimelineView.swift",
        "Views/EventDetailsView.swift",
        "Views/EventView.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.8"
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "SimpleCalendar"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme SimpleCalendar -destination platform=macOS,arch=arm64
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath /Users/admin/builder/spi-builder-workspace/.derivedData build -scheme SimpleCalendar -destination platform=macOS,arch=arm64
Resolve Package Graph
Resolved source packages:
  SimpleCalendar: /Users/admin/builder/spi-builder-workspace
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (2 targets)
    Target 'SimpleCalendar' in project 'SimpleCalendar'
        ➜ Explicit dependency on target 'SimpleCalendar' in project 'SimpleCalendar'
    Target 'SimpleCalendar' in project 'SimpleCalendar' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -isysroot /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc --version
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld -version_details
ReadFileContents /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/share/docc/features.json
Build description signature: c952aaeb477585924485d6707f9837e1
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/c952aaeb477585924485d6707f9837e1.xcbuilddata
ClangStatCache /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.4-24E241-8287b8f5db97e746a1562fbca0c9d29b.sdkstatcache
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk -o /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.4-24E241-8287b8f5db97e746a1562fbca0c9d29b.sdkstatcache
SwiftDriver SimpleCalendar normal arm64 com.apple.xcode.tools.swift.compiler (in target 'SimpleCalendar' from project 'SimpleCalendar')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-SwiftDriver -- /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc -module-name SimpleCalendar -Onone -enforce-exclusivity\=checked @/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/Objects-normal/arm64/SimpleCalendar.SwiftFileList -DSWIFT_PACKAGE -DDEBUG -DXcode -plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -enable-experimental-feature DebugDescriptionMacro -sdk /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk -target arm64-apple-macos10.13 -g -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -Xfrontend -serialize-debugging-options -profile-coverage-mapping -profile-generate -enable-testing -index-store-path /Users/admin/builder/spi-builder-workspace/.derivedData/Index.noindex/DataStore -swift-version 5 -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -I /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -F /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -c -j10 -enable-batch-mode -incremental -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.4-24E241-8287b8f5db97e746a1562fbca0c9d29b.sdkstatcache -output-file-map /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/Objects-normal/arm64/SimpleCalendar-OutputFileMap.json -use-frontend-parseable-output -save-temps -no-color-diagnostics -serialize-diagnostics -emit-dependencies -emit-module -emit-module-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/Objects-normal/arm64/SimpleCalendar.swiftmodule -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/swift-overrides.hmap -emit-const-values -Xfrontend -const-gather-protocols-file -Xfrontend /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/Objects-normal/arm64/SimpleCalendar_const_extract_protocols.json -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -emit-objc-header -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/Objects-normal/arm64/SimpleCalendar-Swift.h -working-directory /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -experimental-emit-module-separately -disable-cmo
SwiftCompile normal arm64 Compiling\ CalendarActivity.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 Compiling\ SimpleCalendarView.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 Compiling\ CalendarContentView.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarContentView.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarContentView.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 Compiling\ Date+Formatting.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Extensions/Date+Formatting.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Extensions/Date+Formatting.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 Compiling\ CalendarEvent.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarEvent.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarEvent.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftEmitModule normal arm64 Emitting\ module\ for\ SimpleCalendar (in target 'SimpleCalendar' from project 'SimpleCalendar')
Failed frontend command:
/Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend -frontend -emit-module -experimental-skip-non-inlinable-function-bodies-without-types /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarEvent.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Extensions/Date+Formatting.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Extensions/File.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarContentView.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarPageView.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarTimelineView.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventDetailsView.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventView.swift -target arm64-apple-macos10.13 -Xllvm -aarch64-use-tbi -enable-objc-interop -sdk /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -I /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -F /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -no-color-diagnostics -enable-testing -g -debug-info-format\=dwarf -dwarf-version\=4 -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -profile-generate -profile-coverage-mapping -swift-version 5 -enforce-exclusivity\=checked -Onone -D SWIFT_PACKAGE -D DEBUG -D Xcode -serialize-debugging-options -const-gather-protocols-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/Objects-normal/arm64/SimpleCalendar_const_extract_protocols.json -enable-experimental-feature DebugDescriptionMacro -empty-abi-descriptor -plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -working-directory -Xcc /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -resource-dir /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift -enable-anonymous-context-mangled-names -file-compilation-dir /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.4-24E241-8287b8f5db97e746a1562fbca0c9d29b.sdkstatcache -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/swift-overrides.hmap -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -module-name SimpleCalendar -frontend-parseable-output -disable-clang-spi -target-sdk-version 15.4 -target-sdk-name macosx15.4 -external-plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins\#/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -external-plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/local/lib/swift/host/plugins\#/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -in-process-plugin-server-path /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/libSwiftInProcPluginServer.dylib -plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins -plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/local/lib/swift/host/plugins -emit-module-doc-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/Objects-normal/arm64/SimpleCalendar.swiftdoc -emit-module-source-info-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/Objects-normal/arm64/SimpleCalendar.swiftsourceinfo -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/Objects-normal/arm64/SimpleCalendar-Swift.h -serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/Objects-normal/arm64/SimpleCalendar-master-emit-module.dia -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/Objects-normal/arm64/SimpleCalendar-master-emit-module.d -o /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/Objects-normal/arm64/SimpleCalendar.swiftmodule -emit-abi-descriptor-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SimpleCalendar.build/Debug/SimpleCalendar.build/Objects-normal/arm64/SimpleCalendar.abi.json
EmitSwiftModule normal arm64 (in target 'SimpleCalendar' from project 'SimpleCalendar')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:40:23: error: 'Color' is only available in macOS 10.15 or newer
    public let color: Color
                      ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:38:15: note: add @available attribute to enclosing struct
public struct ActivityType: Codable {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:42:38: error: 'Color' is only available in macOS 10.15 or newer
    public init(name: String, color: Color) {
                                     ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:42:12: note: add @available attribute to enclosing initializer
    public init(name: String, color: Color) {
           ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:38:15: note: add @available attribute to enclosing struct
public struct ActivityType: Codable {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:51:16: error: 'Color' is only available in macOS 10.15 or newer
        color: Color = [.yellow, .red, .green, .blue].randomElement()!
               ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:49:17: note: add @available attribute to enclosing static method
    static func forPreview(
                ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:48:10: note: add @available attribute to enclosing extension
internal extension ActivityType {
         ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:51:26: error: 'yellow' is only available in macOS 10.15 or newer
        color: Color = [.yellow, .red, .green, .blue].randomElement()!
                         ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:49:17: note: add @available attribute to enclosing static method
    static func forPreview(
                ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:48:10: note: add @available attribute to enclosing extension
internal extension ActivityType {
         ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:51:35: error: 'red' is only available in macOS 10.15 or newer
        color: Color = [.yellow, .red, .green, .blue].randomElement()!
                                  ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:49:17: note: add @available attribute to enclosing static method
    static func forPreview(
                ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:48:10: note: add @available attribute to enclosing extension
internal extension ActivityType {
         ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:51:41: error: 'green' is only available in macOS 10.15 or newer
        color: Color = [.yellow, .red, .green, .blue].randomElement()!
                                        ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:49:17: note: add @available attribute to enclosing static method
    static func forPreview(
                ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:48:10: note: add @available attribute to enclosing extension
internal extension ActivityType {
         ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:51:49: error: 'blue' is only available in macOS 10.15 or newer
        color: Color = [.yellow, .red, .green, .blue].randomElement()!
                                                ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:49:17: note: add @available attribute to enclosing static method
    static func forPreview(
                ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Entities/CalendarActivity.swift:48:10: note: add @available attribute to enclosing extension
internal extension ActivityType {
         ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Extensions/File.swift:15:23: error: 'Color' is only available in macOS 10.15 or newer
fileprivate extension Color {
                      ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Extensions/File.swift:15:13: note: add @available attribute to enclosing extension
fileprivate extension Color {
            ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Extensions/File.swift:43:11: error: 'Color' is only available in macOS 10.15 or newer
extension Color: Codable {
          ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Extensions/File.swift:43:1: note: add @available attribute to enclosing extension
extension Color: Codable {
^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:32:62: error: 'View' is only available in macOS 10.15 or newer
    case customSheet((any CalendarEventRepresentable) -> any View)
                                                             ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:9:13: note: add @available attribute to enclosing enum
public enum SelectionAction {
            ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:45:62: error: 'View' is only available in macOS 10.15 or newer
    case destination((any CalendarEventRepresentable) -> any View)
                                                             ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:9:13: note: add @available attribute to enclosing enum
public enum SelectionAction {
            ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:75:6: error: 'Binding' is only available in macOS 10.15 or newer
    @Binding var events: [any CalendarEventRepresentable]
     ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:73:15: note: add @available attribute to enclosing struct
public struct SimpleCalendarView: View {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:76:6: error: 'Binding' is only available in macOS 10.15 or newer
    @Binding var selectedDate: Date
     ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:73:15: note: add @available attribute to enclosing struct
public struct SimpleCalendarView: View {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:78:6: error: 'State' is only available in macOS 10.15 or newer
    @State private var visibleEvents: [any CalendarEventRepresentable]
     ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:73:15: note: add @available attribute to enclosing struct
public struct SimpleCalendarView: View {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:79:6: error: 'State' is only available in macOS 10.15 or newer
    @State private var hourHeight: Double
     ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:73:15: note: add @available attribute to enclosing struct
public struct SimpleCalendarView: View {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:80:6: error: 'State' is only available in macOS 10.15 or newer
    @State private var hourSpacing: Double
     ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:73:15: note: add @available attribute to enclosing struct
public struct SimpleCalendarView: View {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:96:17: error: 'Binding' is only available in macOS 10.15 or newer
        events: Binding<[any CalendarEventRepresentable]>,
                ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:95:12: note: add @available attribute to enclosing initializer
    public init(
           ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:73:15: note: add @available attribute to enclosing struct
public struct SimpleCalendarView: View {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:97:23: error: 'Binding' is only available in macOS 10.15 or newer
        selectedDate: Binding<Date>,
                      ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:95:12: note: add @available attribute to enclosing initializer
    public init(
           ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:73:15: note: add @available attribute to enclosing struct
public struct SimpleCalendarView: View {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:145:27: error: 'View' is only available in macOS 10.15 or newer
    public var body: some View {
                          ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:145:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:73:15: note: add @available attribute to enclosing struct
public struct SimpleCalendarView: View {
              ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:259:31: error: 'View' is only available in macOS 10.15 or newer
    static var previews: some View {
                              ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:259:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/SimpleCalendarView.swift:258:8: note: add @available attribute to enclosing struct
struct ScheduleView_Previews: PreviewProvider {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarContentView.swift:9:6: error: 'Binding' is only available in macOS 10.15 or newer
    @Binding var events: [any CalendarEventRepresentable]
     ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarContentView.swift:8:8: note: add @available attribute to enclosing struct
struct CalendarContentView: View {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarContentView.swift:15:27: error: 'View' is only available in macOS 10.15 or newer
    public var body: some View {
                          ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarContentView.swift:15:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarContentView.swift:8:8: note: add @available attribute to enclosing struct
struct CalendarContentView: View {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarContentView.swift:33:31: error: 'View' is only available in macOS 10.15 or newer
    static var previews: some View {
                              ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarContentView.swift:33:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarContentView.swift:32:8: note: add @available attribute to enclosing struct
struct CalendarContentView_Previews: PreviewProvider {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarPageView.swift:12:6: error: 'Binding' is only available in macOS 10.15 or newer
    @Binding var hourSpacing: Double
     ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarPageView.swift:10:8: note: add @available attribute to enclosing struct
struct CalendarPageView: View {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarPageView.swift:13:6: error: 'Binding' is only available in macOS 10.15 or newer
    @Binding var hourHeight: Double
     ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarPageView.swift:10:8: note: add @available attribute to enclosing struct
struct CalendarPageView: View {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarPageView.swift:15:20: error: 'View' is only available in macOS 10.15 or newer
    var body: some View {
                   ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarPageView.swift:15:9: note: add @available attribute to enclosing property
    var body: some View {
        ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarPageView.swift:10:8: note: add @available attribute to enclosing struct
struct CalendarPageView: View {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarPageView.swift:38:31: error: 'View' is only available in macOS 10.15 or newer
    static var previews: some View {
                              ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarPageView.swift:38:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarPageView.swift:37:8: note: add @available attribute to enclosing struct
struct CalendarPageView_Previews: PreviewProvider {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarTimelineView.swift:11:6: error: 'Binding' is only available in macOS 10.15 or newer
    @Binding var hourSpacing: Double
     ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarTimelineView.swift:9:8: note: add @available attribute to enclosing struct
struct CalendarTimelineView: View {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarTimelineView.swift:12:6: error: 'Binding' is only available in macOS 10.15 or newer
    @Binding var hourHeight: Double
     ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarTimelineView.swift:9:8: note: add @available attribute to enclosing struct
struct CalendarTimelineView: View {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarTimelineView.swift:13:6: error: 'State' is only available in macOS 10.15 or newer
    @State private var timelineOffset: Double = 0
     ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarTimelineView.swift:9:8: note: add @available attribute to enclosing struct
struct CalendarTimelineView: View {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarTimelineView.swift:16:31: error: 'publish(every:tolerance:on:in:options:)' is only available in macOS 10.15 or newer
    private let timer = Timer.publish(every: 60, on: .main, in: .common).autoconnect()
                              ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarTimelineView.swift:9:8: note: add @available attribute to enclosing struct
struct CalendarTimelineView: View {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarTimelineView.swift:16:74: error: 'autoconnect()' is only available in macOS 10.15 or newer
    private let timer = Timer.publish(every: 60, on: .main, in: .common).autoconnect()
                                                                         ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarTimelineView.swift:9:8: note: add @available attribute to enclosing struct
struct CalendarTimelineView: View {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarTimelineView.swift:18:20: error: 'View' is only available in macOS 10.15 or newer
    var body: some View {
                   ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarTimelineView.swift:18:9: note: add @available attribute to enclosing property
    var body: some View {
        ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarTimelineView.swift:9:8: note: add @available attribute to enclosing struct
struct CalendarTimelineView: View {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarTimelineView.swift:46:31: error: 'View' is only available in macOS 10.15 or newer
    static var previews: some View {
                              ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarTimelineView.swift:46:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarTimelineView.swift:45:8: note: add @available attribute to enclosing struct
struct CalendarTimelineView_Previews: PreviewProvider {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventDetailsView.swift:12:20: error: 'View' is only available in macOS 10.15 or newer
    var body: some View {
                   ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventDetailsView.swift:12:9: note: add @available attribute to enclosing property
    var body: some View {
        ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventDetailsView.swift:9:8: note: add @available attribute to enclosing struct
struct EventDetailsView: View {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventDetailsView.swift:58:31: error: 'View' is only available in macOS 10.15 or newer
    static var previews: some View {
                              ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventDetailsView.swift:58:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventDetailsView.swift:57:8: note: add @available attribute to enclosing struct
struct EventDetailsView_Previews: PreviewProvider {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventView.swift:15:6: error: 'State' is only available in macOS 10.15 or newer
    @State private var showEventSheet = false
     ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventView.swift:10:8: note: add @available attribute to enclosing struct
struct EventView: View {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventView.swift:17:20: error: 'View' is only available in macOS 10.15 or newer
    var body: some View {
                   ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventView.swift:17:9: note: add @available attribute to enclosing property
    var body: some View {
        ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventView.swift:10:8: note: add @available attribute to enclosing struct
struct EventView: View {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventView.swift:51:31: error: 'View' is only available in macOS 10.15 or newer
    private var content: some View {
                              ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventView.swift:51:17: note: add @available attribute to enclosing property
    private var content: some View {
                ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventView.swift:10:8: note: add @available attribute to enclosing struct
struct EventView: View {
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventView.swift:151:31: error: 'View' is only available in macOS 10.15 or newer
    static var previews: some View {
                              ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventView.swift:151:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventView.swift:150:8: note: add @available attribute to enclosing struct
struct EventView_Previews: PreviewProvider {
       ^
SwiftCompile normal arm64 Compiling\ EventView.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventView.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventView.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 Compiling\ EventDetailsView.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventDetailsView.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/EventDetailsView.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 Compiling\ File.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Extensions/File.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Extensions/File.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 Compiling\ CalendarPageView.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarPageView.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarPageView.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 Compiling\ CalendarTimelineView.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarTimelineView.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
Command SwiftCompile failed with a nonzero exit code
--- xcodebuild: WARNING: Using the first of multiple matching destinations:
{ platform:macOS, arch:arm64, id:3678c7a802501fa94c470d9f64bd6a9c7d1927ce, name:My Mac }
{ platform:macOS, arch:arm64, variant:Mac Catalyst, id:3678c7a802501fa94c470d9f64bd6a9c7d1927ce, name:My Mac }
{ platform:macOS, arch:arm64, variant:DriverKit, id:3678c7a802501fa94c470d9f64bd6a9c7d1927ce, name:My Mac }
{ platform:macOS, arch:arm64, variant:Designed for [iPad,iPhone], id:3678c7a802501fa94c470d9f64bd6a9c7d1927ce, name:My Mac }
** BUILD FAILED **
The following build commands failed:
	SwiftEmitModule normal arm64 Emitting\ module\ for\ SimpleCalendar (in target 'SimpleCalendar' from project 'SimpleCalendar')
	EmitSwiftModule normal arm64 (in target 'SimpleCalendar' from project 'SimpleCalendar')
	SwiftCompile normal arm64 Compiling\ CalendarTimelineView.swift /Users/admin/builder/spi-builder-workspace/Sources/SimpleCalendar/Views/CalendarTimelineView.swift (in target 'SimpleCalendar' from project 'SimpleCalendar')
	Building workspace spi-builder-workspace with scheme SimpleCalendar
(4 failures)
BUILD FAILURE 6.1 macosXcodebuild