Swift Package IndexBuild Information
Successful build of SwiftCustomLogger, reference master (5eea14), with Swift 6.0 for Linux on 18 Apr 2025 19:19:03 UTC.
Swift 6 data race errors: 7
Build Command
bash -c docker run --pull=always --rm -v "checkouts-4609320-2":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.0-latest swift build --triple x86_64-unknown-linux-gnu -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete -Xswiftc -enable-upcoming-feature -Xswiftc StrictConcurrency -Xswiftc -enable-upcoming-feature -Xswiftc DisableOutwardActorInference -Xswiftc -enable-upcoming-feature -Xswiftc GlobalActorIsolatedTypesUsability -Xswiftc -enable-upcoming-feature -Xswiftc InferSendableFromCaptures 2>&1Build Log
========================================
RunAll
========================================
Builder version: 4.60.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/nerzh/swift-custom-logger.git
Reference: master
Initialized empty Git repository in /host/spi-builder-workspace/.git/
hint: Using 'master' as the name for the initial branch. This default branch name
hint: is subject to change. To configure the initial branch name to use in all
hint: of your new repositories, which will suppress this warning, call:
hint:
hint: git config --global init.defaultBranch <name>
hint:
hint: Names commonly chosen instead of 'master' are 'main', 'trunk' and
hint: 'development'. The just-created branch can be renamed via this command:
hint:
hint: git branch -m <name>
From https://github.com/nerzh/swift-custom-logger
* branch master -> FETCH_HEAD
* [new branch] master -> origin/master
HEAD is now at 5eea143 Merge pull request #1 from makoni/master
Cloned https://github.com/nerzh/swift-custom-logger.git
Revision (git rev-parse @):
5eea143e6674a7a263b96cdf51e4db8bad07820c
SUCCESS checkout https://github.com/nerzh/swift-custom-logger.git at master
========================================
Build
========================================
Selected platform: linux
Swift version: 6.0
Building package at path: $PWD
https://github.com/nerzh/swift-custom-logger.git
https://github.com/nerzh/swift-custom-logger.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
"dependencies" : [
{
"identity" : "swift-log",
"requirement" : {
"range" : [
{
"lower_bound" : "1.5.4",
"upper_bound" : "2.0.0"
}
]
},
"type" : "sourceControl",
"url" : "https://github.com/apple/swift-log"
}
],
"manifest_display_name" : "SwiftCustomLogger",
"name" : "SwiftCustomLogger",
"path" : "/host/spi-builder-workspace",
"platforms" : [
],
"products" : [
{
"name" : "SwiftCustomLogger",
"targets" : [
"SwiftCustomLogger"
],
"type" : {
"library" : [
"automatic"
]
}
}
],
"targets" : [
{
"c99name" : "SwiftCustomLogger",
"module_type" : "SwiftTarget",
"name" : "SwiftCustomLogger",
"path" : "Sources/SwiftCustomLogger",
"product_dependencies" : [
"Logging"
],
"product_memberships" : [
"SwiftCustomLogger"
],
"sources" : [
"BasicFormatter.swift",
"CustomHandler.swift",
"LogFormatter.swift",
"Printer.swift"
],
"type" : "library"
}
],
"tools_version" : "5.9"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-2":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.0-latest swift build --triple x86_64-unknown-linux-gnu -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete -Xswiftc -enable-upcoming-feature -Xswiftc StrictConcurrency -Xswiftc -enable-upcoming-feature -Xswiftc DisableOutwardActorInference -Xswiftc -enable-upcoming-feature -Xswiftc GlobalActorIsolatedTypesUsability -Xswiftc -enable-upcoming-feature -Xswiftc InferSendableFromCaptures 2>&1
basic-6.0-latest: Pulling from finestructure/spi-images
Digest: sha256:9029076bb687edc160a3d5201c89e92dd9fa7309f33f090c4234365c83366c31
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.0-latest
Fetching https://github.com/apple/swift-log
[1/3832] Fetching swift-log
Fetched https://github.com/apple/swift-log from cache (0.38s)
Computing version for https://github.com/apple/swift-log
Computed https://github.com/apple/swift-log at 1.6.3 (0.48s)
Creating working copy for https://github.com/apple/swift-log
Working copy of https://github.com/apple/swift-log resolved at 1.6.3
Building for debugging...
[0/3] Write sources
[2/3] Write swift-version-24593BA9C3E375BF.txt
[4/8] Compiling Logging Locks.swift
[5/8] Emitting module Logging
[6/8] Compiling Logging LogHandler.swift
[7/8] Compiling Logging Logging.swift
[8/8] Compiling Logging MetadataProvider.swift
[10/14] Emitting module SwiftCustomLogger
/host/spi-builder-workspace/Sources/SwiftCustomLogger/BasicFormatter.swift:56:23: warning: static property 'appleDefault' is not concurrency-safe because non-'Sendable' type 'BasicFormatter' may have shared mutable state; this is an error in the Swift 6 language mode
2 | import Logging
3 |
4 | public struct BasicFormatter: LogFormatter {
| `- note: consider making struct 'BasicFormatter' conform to the 'Sendable' protocol
5 |
6 | public let timestampFormatter: DateFormatter
:
54 | /// [apple/swift-log](https://github.com/apple/swift-log)'s log format
55 | /// `2024-04-12T10:00:07-0310 error: Test error message`
56 | public static let appleDefault = BasicFormatter(
| |- warning: static property 'appleDefault' is not concurrency-safe because non-'Sendable' type 'BasicFormatter' may have shared mutable state; this is an error in the Swift 6 language mode
| |- note: annotate 'appleDefault' with '@MainActor' if property should only be accessed from the main actor
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
57 | [
58 | .timestamp,
/host/spi-builder-workspace/Sources/SwiftCustomLogger/CustomHandler.swift:6:16: warning: stored property 'formatter' of 'Sendable'-conforming struct 'CustomHandler' has non-sendable type 'any LogFormatter'; this is an error in the Swift 6 language mode
4 | public struct CustomHandler: LogHandler {
5 |
6 | public let formatter: LogFormatter
| `- warning: stored property 'formatter' of 'Sendable'-conforming struct 'CustomHandler' has non-sendable type 'any LogFormatter'; this is an error in the Swift 6 language mode
7 | public let printer: Printer
8 | public var logLevel: Logger.Level = .info
/host/spi-builder-workspace/Sources/SwiftCustomLogger/LogFormatter.swift:28:17: note: protocol 'LogFormatter' does not conform to the 'Sendable' protocol
26 | }
27 |
28 | public protocol LogFormatter {
| `- note: protocol 'LogFormatter' does not conform to the 'Sendable' protocol
29 | var timestampFormatter: DateFormatter { get }
30 |
/host/spi-builder-workspace/Sources/SwiftCustomLogger/CustomHandler.swift:7:16: warning: stored property 'printer' of 'Sendable'-conforming struct 'CustomHandler' has non-sendable type 'any Printer'; this is an error in the Swift 6 language mode
5 |
6 | public let formatter: LogFormatter
7 | public let printer: Printer
| `- warning: stored property 'printer' of 'Sendable'-conforming struct 'CustomHandler' has non-sendable type 'any Printer'; this is an error in the Swift 6 language mode
8 | public var logLevel: Logger.Level = .info
9 | private var prettyMetadata: String?
/host/spi-builder-workspace/Sources/SwiftCustomLogger/Printer.swift:23:17: note: protocol 'Printer' does not conform to the 'Sendable' protocol
21 | #endif
22 |
23 | public protocol Printer {
| `- note: protocol 'Printer' does not conform to the 'Sendable' protocol
24 | func handle(_ formattedLogLine: String)
25 | }
/host/spi-builder-workspace/Sources/SwiftCustomLogger/CustomHandler.swift:4:15: warning: deprecated default implementation is used to satisfy instance method 'log(level:message:metadata:source:file:function:line:)' required by protocol 'LogHandler': You should implement this method instead of using the default implementation
2 | import Logging
3 |
4 | public struct CustomHandler: LogHandler {
| `- warning: deprecated default implementation is used to satisfy instance method 'log(level:message:metadata:source:file:function:line:)' required by protocol 'LogHandler': You should implement this method instead of using the default implementation
5 |
6 | public let formatter: LogFormatter
/host/spi-builder-workspace/.build/checkouts/swift-log/Sources/Logging/LogHandler.swift:209:17: note: 'log(level:message:metadata:source:file:function:line:)' declared here
133 | /// - function: The function the log line was emitted from.
134 | /// - line: The line the log message was emitted from.
135 | func log(
| `- note: requirement 'log(level:message:metadata:source:file:function:line:)' declared here
136 | level: Logger.Level,
137 | message: Logger.Message,
:
207 | extension LogHandler {
208 | @available(*, deprecated, message: "You should implement this method instead of using the default implementation")
209 | public func log(
| `- note: 'log(level:message:metadata:source:file:function:line:)' declared here
210 | level: Logger.Level,
211 | message: Logger.Message,
/host/spi-builder-workspace/Sources/SwiftCustomLogger/Printer.swift:74:16: warning: static property 'stderr' is not concurrency-safe because non-'Sendable' type 'OutputStream' may have shared mutable state; this is an error in the Swift 6 language mode
47 | }
48 |
49 | private struct OutputStream: TextOutputStream {
| `- note: consider making struct 'OutputStream' conform to the 'Sendable' protocol
50 |
51 | public let file: UnsafeMutablePointer<FILE>
:
72 |
73 | #elseif canImport(Glibc)
74 | static let stderr = OutputStream(file: Glibc.stderr!)
| |- warning: static property 'stderr' is not concurrency-safe because non-'Sendable' type 'OutputStream' may have shared mutable state; this is an error in the Swift 6 language mode
| |- note: annotate 'stderr' with '@MainActor' if property should only be accessed from the main actor
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
75 | static let stdout = OutputStream(file: Glibc.stdout!)
76 |
/host/spi-builder-workspace/Sources/SwiftCustomLogger/Printer.swift:74:50: warning: reference to var 'stderr' is not concurrency-safe because it involves shared mutable state; this is an error in the Swift 6 language mode
72 |
73 | #elseif canImport(Glibc)
74 | static let stderr = OutputStream(file: Glibc.stderr!)
| `- warning: reference to var 'stderr' is not concurrency-safe because it involves shared mutable state; this is an error in the Swift 6 language mode
75 | static let stdout = OutputStream(file: Glibc.stdout!)
76 |
SwiftGlibc.stderr:1:12: note: var declared here
1 | public var stderr: UnsafeMutablePointer<FILE>!
| `- note: var declared here
/host/spi-builder-workspace/Sources/SwiftCustomLogger/Printer.swift:75:16: warning: static property 'stdout' is not concurrency-safe because non-'Sendable' type 'OutputStream' may have shared mutable state; this is an error in the Swift 6 language mode
47 | }
48 |
49 | private struct OutputStream: TextOutputStream {
| `- note: consider making struct 'OutputStream' conform to the 'Sendable' protocol
50 |
51 | public let file: UnsafeMutablePointer<FILE>
:
73 | #elseif canImport(Glibc)
74 | static let stderr = OutputStream(file: Glibc.stderr!)
75 | static let stdout = OutputStream(file: Glibc.stdout!)
| |- warning: static property 'stdout' is not concurrency-safe because non-'Sendable' type 'OutputStream' may have shared mutable state; this is an error in the Swift 6 language mode
| |- note: annotate 'stdout' with '@MainActor' if property should only be accessed from the main actor
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
76 |
77 | #elseif canImport(Musl)
/host/spi-builder-workspace/Sources/SwiftCustomLogger/Printer.swift:75:50: warning: reference to var 'stdout' is not concurrency-safe because it involves shared mutable state; this is an error in the Swift 6 language mode
73 | #elseif canImport(Glibc)
74 | static let stderr = OutputStream(file: Glibc.stderr!)
75 | static let stdout = OutputStream(file: Glibc.stdout!)
| `- warning: reference to var 'stdout' is not concurrency-safe because it involves shared mutable state; this is an error in the Swift 6 language mode
76 |
77 | #elseif canImport(Musl)
SwiftGlibc.stdout:1:12: note: var declared here
1 | public var stdout: UnsafeMutablePointer<FILE>!
| `- note: var declared here
[11/14] Compiling SwiftCustomLogger Printer.swift
/host/spi-builder-workspace/Sources/SwiftCustomLogger/Printer.swift:74:16: warning: static property 'stderr' is not concurrency-safe because non-'Sendable' type 'OutputStream' may have shared mutable state; this is an error in the Swift 6 language mode
47 | }
48 |
49 | private struct OutputStream: TextOutputStream {
| `- note: consider making struct 'OutputStream' conform to the 'Sendable' protocol
50 |
51 | public let file: UnsafeMutablePointer<FILE>
:
72 |
73 | #elseif canImport(Glibc)
74 | static let stderr = OutputStream(file: Glibc.stderr!)
| |- warning: static property 'stderr' is not concurrency-safe because non-'Sendable' type 'OutputStream' may have shared mutable state; this is an error in the Swift 6 language mode
| |- note: annotate 'stderr' with '@MainActor' if property should only be accessed from the main actor
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
75 | static let stdout = OutputStream(file: Glibc.stdout!)
76 |
/host/spi-builder-workspace/Sources/SwiftCustomLogger/Printer.swift:74:50: warning: reference to var 'stderr' is not concurrency-safe because it involves shared mutable state; this is an error in the Swift 6 language mode
72 |
73 | #elseif canImport(Glibc)
74 | static let stderr = OutputStream(file: Glibc.stderr!)
| `- warning: reference to var 'stderr' is not concurrency-safe because it involves shared mutable state; this is an error in the Swift 6 language mode
75 | static let stdout = OutputStream(file: Glibc.stdout!)
76 |
SwiftGlibc.stderr:1:12: note: var declared here
1 | public var stderr: UnsafeMutablePointer<FILE>!
| `- note: var declared here
/host/spi-builder-workspace/Sources/SwiftCustomLogger/Printer.swift:75:16: warning: static property 'stdout' is not concurrency-safe because non-'Sendable' type 'OutputStream' may have shared mutable state; this is an error in the Swift 6 language mode
47 | }
48 |
49 | private struct OutputStream: TextOutputStream {
| `- note: consider making struct 'OutputStream' conform to the 'Sendable' protocol
50 |
51 | public let file: UnsafeMutablePointer<FILE>
:
73 | #elseif canImport(Glibc)
74 | static let stderr = OutputStream(file: Glibc.stderr!)
75 | static let stdout = OutputStream(file: Glibc.stdout!)
| |- warning: static property 'stdout' is not concurrency-safe because non-'Sendable' type 'OutputStream' may have shared mutable state; this is an error in the Swift 6 language mode
| |- note: annotate 'stdout' with '@MainActor' if property should only be accessed from the main actor
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
76 |
77 | #elseif canImport(Musl)
/host/spi-builder-workspace/Sources/SwiftCustomLogger/Printer.swift:75:50: warning: reference to var 'stdout' is not concurrency-safe because it involves shared mutable state; this is an error in the Swift 6 language mode
73 | #elseif canImport(Glibc)
74 | static let stderr = OutputStream(file: Glibc.stderr!)
75 | static let stdout = OutputStream(file: Glibc.stdout!)
| `- warning: reference to var 'stdout' is not concurrency-safe because it involves shared mutable state; this is an error in the Swift 6 language mode
76 |
77 | #elseif canImport(Musl)
SwiftGlibc.stdout:1:12: note: var declared here
1 | public var stdout: UnsafeMutablePointer<FILE>!
| `- note: var declared here
[12/14] Compiling SwiftCustomLogger LogFormatter.swift
[13/14] Compiling SwiftCustomLogger BasicFormatter.swift
/host/spi-builder-workspace/Sources/SwiftCustomLogger/BasicFormatter.swift:56:23: warning: static property 'appleDefault' is not concurrency-safe because non-'Sendable' type 'BasicFormatter' may have shared mutable state; this is an error in the Swift 6 language mode
2 | import Logging
3 |
4 | public struct BasicFormatter: LogFormatter {
| `- note: consider making struct 'BasicFormatter' conform to the 'Sendable' protocol
5 |
6 | public let timestampFormatter: DateFormatter
:
54 | /// [apple/swift-log](https://github.com/apple/swift-log)'s log format
55 | /// `2024-04-12T10:00:07-0310 error: Test error message`
56 | public static let appleDefault = BasicFormatter(
| |- warning: static property 'appleDefault' is not concurrency-safe because non-'Sendable' type 'BasicFormatter' may have shared mutable state; this is an error in the Swift 6 language mode
| |- note: annotate 'appleDefault' with '@MainActor' if property should only be accessed from the main actor
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
57 | [
58 | .timestamp,
[14/14] Compiling SwiftCustomLogger CustomHandler.swift
/host/spi-builder-workspace/Sources/SwiftCustomLogger/BasicFormatter.swift:56:23: warning: static property 'appleDefault' is not concurrency-safe because non-'Sendable' type 'BasicFormatter' may have shared mutable state; this is an error in the Swift 6 language mode
2 | import Logging
3 |
4 | public struct BasicFormatter: LogFormatter {
| `- note: consider making struct 'BasicFormatter' conform to the 'Sendable' protocol
5 |
6 | public let timestampFormatter: DateFormatter
:
54 | /// [apple/swift-log](https://github.com/apple/swift-log)'s log format
55 | /// `2024-04-12T10:00:07-0310 error: Test error message`
56 | public static let appleDefault = BasicFormatter(
| |- warning: static property 'appleDefault' is not concurrency-safe because non-'Sendable' type 'BasicFormatter' may have shared mutable state; this is an error in the Swift 6 language mode
| |- note: annotate 'appleDefault' with '@MainActor' if property should only be accessed from the main actor
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
57 | [
58 | .timestamp,
/host/spi-builder-workspace/Sources/SwiftCustomLogger/CustomHandler.swift:6:16: warning: stored property 'formatter' of 'Sendable'-conforming struct 'CustomHandler' has non-sendable type 'any LogFormatter'; this is an error in the Swift 6 language mode
4 | public struct CustomHandler: LogHandler {
5 |
6 | public let formatter: LogFormatter
| `- warning: stored property 'formatter' of 'Sendable'-conforming struct 'CustomHandler' has non-sendable type 'any LogFormatter'; this is an error in the Swift 6 language mode
7 | public let printer: Printer
8 | public var logLevel: Logger.Level = .info
/host/spi-builder-workspace/Sources/SwiftCustomLogger/LogFormatter.swift:28:17: note: protocol 'LogFormatter' does not conform to the 'Sendable' protocol
26 | }
27 |
28 | public protocol LogFormatter {
| `- note: protocol 'LogFormatter' does not conform to the 'Sendable' protocol
29 | var timestampFormatter: DateFormatter { get }
30 |
/host/spi-builder-workspace/Sources/SwiftCustomLogger/CustomHandler.swift:7:16: warning: stored property 'printer' of 'Sendable'-conforming struct 'CustomHandler' has non-sendable type 'any Printer'; this is an error in the Swift 6 language mode
5 |
6 | public let formatter: LogFormatter
7 | public let printer: Printer
| `- warning: stored property 'printer' of 'Sendable'-conforming struct 'CustomHandler' has non-sendable type 'any Printer'; this is an error in the Swift 6 language mode
8 | public var logLevel: Logger.Level = .info
9 | private var prettyMetadata: String?
/host/spi-builder-workspace/Sources/SwiftCustomLogger/Printer.swift:23:17: note: protocol 'Printer' does not conform to the 'Sendable' protocol
21 | #endif
22 |
23 | public protocol Printer {
| `- note: protocol 'Printer' does not conform to the 'Sendable' protocol
24 | func handle(_ formattedLogLine: String)
25 | }
/host/spi-builder-workspace/Sources/SwiftCustomLogger/CustomHandler.swift:4:15: warning: deprecated default implementation is used to satisfy instance method 'log(level:message:metadata:source:file:function:line:)' required by protocol 'LogHandler': You should implement this method instead of using the default implementation
2 | import Logging
3 |
4 | public struct CustomHandler: LogHandler {
| `- warning: deprecated default implementation is used to satisfy instance method 'log(level:message:metadata:source:file:function:line:)' required by protocol 'LogHandler': You should implement this method instead of using the default implementation
5 |
6 | public let formatter: LogFormatter
/host/spi-builder-workspace/.build/checkouts/swift-log/Sources/Logging/LogHandler.swift:209:17: note: 'log(level:message:metadata:source:file:function:line:)' declared here
133 | /// - function: The function the log line was emitted from.
134 | /// - line: The line the log message was emitted from.
135 | func log(
| `- note: requirement 'log(level:message:metadata:source:file:function:line:)' declared here
136 | level: Logger.Level,
137 | message: Logger.Message,
:
207 | extension LogHandler {
208 | @available(*, deprecated, message: "You should implement this method instead of using the default implementation")
209 | public func log(
| `- note: 'log(level:message:metadata:source:file:function:line:)' declared here
210 | level: Logger.Level,
211 | message: Logger.Message,
Build complete! (12.70s)
Build complete.
{
"dependencies" : [
{
"identity" : "swift-log",
"requirement" : {
"range" : [
{
"lower_bound" : "1.5.4",
"upper_bound" : "2.0.0"
}
]
},
"type" : "sourceControl",
"url" : "https://github.com/apple/swift-log"
}
],
"manifest_display_name" : "SwiftCustomLogger",
"name" : "SwiftCustomLogger",
"path" : "/host/spi-builder-workspace",
"platforms" : [
],
"products" : [
{
"name" : "SwiftCustomLogger",
"targets" : [
"SwiftCustomLogger"
],
"type" : {
"library" : [
"automatic"
]
}
}
],
"targets" : [
{
"c99name" : "SwiftCustomLogger",
"module_type" : "SwiftTarget",
"name" : "SwiftCustomLogger",
"path" : "Sources/SwiftCustomLogger",
"product_dependencies" : [
"Logging"
],
"product_memberships" : [
"SwiftCustomLogger"
],
"sources" : [
"BasicFormatter.swift",
"CustomHandler.swift",
"LogFormatter.swift",
"Printer.swift"
],
"type" : "library"
}
],
"tools_version" : "5.9"
}
basic-6.0-latest: Pulling from finestructure/spi-images
Digest: sha256:9029076bb687edc160a3d5201c89e92dd9fa7309f33f090c4234365c83366c31
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.0-latest
Done.