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Track the adoption of Swift 6 strict concurrency checks for data race safety. How many packages are Ready for Swift 6?

Build Information

Failed to build CommonMark, reference 0.5.1 (92fa2f), with Swift 6.1 for macOS (SPM) on 26 Apr 2025 11:20:27 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/SwiftDocOrg/CommonMark.git
Reference: 0.5.1
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/SwiftDocOrg/CommonMark
 * tag               0.5.1      -> FETCH_HEAD
HEAD is now at 92fa2fa Bump version to 0.5.1
Cloned https://github.com/SwiftDocOrg/CommonMark.git
Revision (git rev-parse @):
92fa2fa2bf3c598f23da652e78c2d4b5bc4e35e9
SUCCESS checkout https://github.com/SwiftDocOrg/CommonMark.git at 0.5.1
Fetching https://github.com/SwiftDocOrg/swift-cmark.git
[1/12555] Fetching swift-cmark
Fetched https://github.com/SwiftDocOrg/swift-cmark.git from cache (1.30s)
Computing version for https://github.com/SwiftDocOrg/swift-cmark.git
Computed https://github.com/SwiftDocOrg/swift-cmark.git at 0.29.0+20210102.9c8096a (1.96s)
Creating working copy for https://github.com/SwiftDocOrg/swift-cmark.git
Working copy of https://github.com/SwiftDocOrg/swift-cmark.git resolved at 0.29.0+20210102.9c8096a
========================================
ResolveProductDependencies
========================================
Resolving dependencies ...
{
  "identity": ".resolve-product-dependencies",
  "name": "resolve-dependencies",
  "url": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
  "version": "unspecified",
  "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
  "dependencies": [
    {
      "identity": "commonmark",
      "name": "CommonMark",
      "url": "https://github.com/SwiftDocOrg/CommonMark.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/CommonMark",
      "dependencies": [
        {
          "identity": "swift-cmark",
          "name": "cmark",
          "url": "https://github.com/SwiftDocOrg/swift-cmark.git",
          "version": "0.29.0+20210102.9c8096a",
          "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/swift-cmark",
          "dependencies": [
          ]
        }
      ]
    }
  ]
}
Fetching https://github.com/SwiftDocOrg/CommonMark.git
[1/1175] Fetching commonmark
Fetched https://github.com/SwiftDocOrg/CommonMark.git from cache (0.80s)
Fetching https://github.com/SwiftDocOrg/swift-cmark.git from cache
Fetched https://github.com/SwiftDocOrg/swift-cmark.git from cache (0.65s)
Computing version for https://github.com/SwiftDocOrg/swift-cmark.git
Computed https://github.com/SwiftDocOrg/swift-cmark.git at 0.29.0+20210102.9c8096a (0.71s)
Creating working copy for https://github.com/SwiftDocOrg/swift-cmark.git
Working copy of https://github.com/SwiftDocOrg/swift-cmark.git resolved at 0.29.0+20210102.9c8096a
Creating working copy for https://github.com/SwiftDocOrg/CommonMark.git
Working copy of https://github.com/SwiftDocOrg/CommonMark.git resolved at 0.5.1 (92fa2fa)
warning: '.resolve-product-dependencies': dependency 'commonmark' is not used by any target
Found 1 product dependencies
  - cmark
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/SwiftDocOrg/CommonMark.git
https://github.com/SwiftDocOrg/CommonMark.git
{
  "dependencies" : [
    {
      "identity" : "swift-cmark",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.29.0+20210102.9c8096a",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/SwiftDocOrg/swift-cmark.git"
    }
  ],
  "manifest_display_name" : "CommonMark",
  "name" : "CommonMark",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "CommonMark",
      "targets" : [
        "CommonMark"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "CommonMarkBuilder",
      "targets" : [
        "CommonMarkBuilder"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "CommonMarkTests",
      "module_type" : "SwiftTarget",
      "name" : "CommonMarkTests",
      "path" : "Tests/CommonMarkTests",
      "sources" : [
        "CommonMarkTests.swift",
        "ContainerManipulationTests.swift",
        "DocumentTests.swift",
        "Fixtures.swift",
        "NodeTests.swift",
        "ProtocolTests.swift",
        "StatisticsVisitor.swift",
        "VisitorTests.swift"
      ],
      "target_dependencies" : [
        "CommonMark"
      ],
      "type" : "test"
    },
    {
      "c99name" : "CommonMarkSpecTests",
      "module_type" : "SwiftTarget",
      "name" : "CommonMarkSpecTests",
      "path" : "Tests/CommonMarkSpecTests",
      "sources" : [
        "AtxHeadingsTests.swift",
        "AutolinksTests.swift",
        "BackslashEscapesTests.swift",
        "BlankLinesTests.swift",
        "BlockQuotesTests.swift",
        "CodeSpansTests.swift",
        "EmphasisAndStrongEmphasisTests.swift",
        "EntityAndNumericCharacterReferencesTests.swift",
        "FencedCodeBlocksTests.swift",
        "HardLineBreaksTests.swift",
        "HtmlBlocksTests.swift",
        "ImagesTests.swift",
        "IndentedCodeBlocksTests.swift",
        "InlinesTests.swift",
        "LinkReferenceDefinitionsTests.swift",
        "LinksTests.swift",
        "ListItemsTests.swift",
        "ListsTests.swift",
        "ParagraphsTests.swift",
        "PrecedenceTests.swift",
        "RawHtmlTests.swift",
        "SetextHeadingsTests.swift",
        "SoftLineBreaksTests.swift",
        "TabsTests.swift",
        "TextualContentTests.swift",
        "ThematicBreaksTests.swift"
      ],
      "target_dependencies" : [
        "CommonMark"
      ],
      "type" : "test"
    },
    {
      "c99name" : "CommonMarkBuilderTests",
      "module_type" : "SwiftTarget",
      "name" : "CommonMarkBuilderTests",
      "path" : "Tests/CommonMarkBuilderTests",
      "sources" : [
        "CommonMarkBuilderTests.swift",
        "Fixtures.swift"
      ],
      "target_dependencies" : [
        "CommonMarkBuilder",
        "CommonMark"
      ],
      "type" : "test"
    },
    {
      "c99name" : "CommonMarkBuilder",
      "module_type" : "SwiftTarget",
      "name" : "CommonMarkBuilder",
      "path" : "Sources/CommonMarkBuilder",
      "product_memberships" : [
        "CommonMarkBuilder"
      ],
      "sources" : [
        "CommonMarkBuilder.swift",
        "Convertible Protocols/BlockConvertible.swift",
        "Convertible Protocols/InlineConvertible.swift",
        "Convertible Protocols/ListItemConvertible.swift",
        "ForEach.swift",
        "Fragment.swift",
        "Nodes/Block/BlockQuote+Builder.swift",
        "Nodes/Block/CodeBlock+Builder.swift",
        "Nodes/Block/HTMLBlock+Builder.swift",
        "Nodes/Block/Heading+Builder.swift",
        "Nodes/Block/List+Builder.swift",
        "Nodes/Block/Paragraph+Builder.swift",
        "Nodes/Document+Builder.swift",
        "Nodes/Inline/Code+Builder.swift",
        "Nodes/Inline/Emphasis+Builder.swift",
        "Nodes/Inline/HTML+Builder.swift",
        "Nodes/Inline/Link+Builder.swift",
        "Nodes/Inline/Strong+Builder.swift",
        "Nodes/Inline/Text+Builder.swift",
        "Section.swift",
        "StringBuilder.swift"
      ],
      "target_dependencies" : [
        "CommonMark"
      ],
      "type" : "library"
    },
    {
      "c99name" : "CommonMark",
      "module_type" : "SwiftTarget",
      "name" : "CommonMark",
      "path" : "Sources/CommonMark",
      "product_dependencies" : [
        "cmark"
      ],
      "product_memberships" : [
        "CommonMark",
        "CommonMarkBuilder"
      ],
      "sources" : [
        "Nodes/Block/BlockQuote.swift",
        "Nodes/Block/CodeBlock.swift",
        "Nodes/Block/HTMLBlock.swift",
        "Nodes/Block/Heading.swift",
        "Nodes/Block/List.swift",
        "Nodes/Block/Paragraph.swift",
        "Nodes/Block/ThematicBreak.swift",
        "Nodes/Document.swift",
        "Nodes/Inline/Code.swift",
        "Nodes/Inline/Emphasis.swift",
        "Nodes/Inline/HardLineBreak.swift",
        "Nodes/Inline/Image.swift",
        "Nodes/Inline/Link.swift",
        "Nodes/Inline/RawHTML.swift",
        "Nodes/Inline/SoftLineBreak.swift",
        "Nodes/Inline/Strong.swift",
        "Nodes/Inline/Text.swift",
        "Nodes/Node.swift",
        "Supporting Types/Block.swift",
        "Supporting Types/Children.swift",
        "Supporting Types/Inline.swift",
        "Supporting Types/LineBreak.swift",
        "Supporting Types/Linked.swift",
        "Supporting Types/Literal.swift",
        "Supporting Types/Visitable.swift",
        "Supporting Types/Visitor.swift",
        "Version.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.1"
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64 -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
Building for debugging...
[0/22] Write swift-version-2F0A5646E1D333AE.txt
[1/22] Compiling cmark cmark_ctype.c
[2/22] Compiling cmark houdini_href_e.c
[3/22] Compiling cmark houdini_html_e.c
[4/22] Compiling cmark xml.c
[5/22] Compiling cmark render.c
[6/22] Compiling cmark buffer.c
[7/22] Compiling cmark blocks.c
[8/22] Compiling cmark references.c
[9/22] Compiling cmark man.c
[10/22] Compiling cmark node.c
[11/22] Write sources
[13/22] Compiling cmark utf8.c
[14/22] Compiling cmark html.c
[15/22] Compiling cmark iterator.c
[16/22] Compiling cmark latex.c
[17/22] Compiling cmark scanners.c
[18/22] Compiling cmark houdini_html_u.c
[19/22] Compiling cmark inlines.c
[20/22] Compiling cmark commonmark.c
[21/22] Compiling cmark cmark.c
[23/48] Emitting module CommonMark
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Nodes/Document.swift:23:27: warning: static property 'smart' is not concurrency-safe because non-'Sendable' type 'Document.ParsingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
 4 | public final class Document: Node {
 5 |     /// Options for parsing CommonMark text.
 6 |     public struct ParsingOptions: OptionSet {
   |                   `- note: consider making struct 'ParsingOptions' conform to the 'Sendable' protocol
 7 |         public var rawValue: Int32
 8 |
   :
21 |          - Three consecutive full stops (...) become an ellipsis (…)
22 |          */
23 |         public static let smart = Self(rawValue: CMARK_OPT_SMART)
   |                           |- warning: static property 'smart' is not concurrency-safe because non-'Sendable' type 'Document.ParsingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
   |                           |- note: add '@MainActor' to make static property 'smart' part of global actor 'MainActor'
   |                           `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
24 |     }
25 |
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Nodes/Node.swift:162:27: warning: static property 'unsafe' is not concurrency-safe because non-'Sendable' type 'Node.RenderingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
134 |
135 |     /// Options for rendering a CommonMark document.
136 |     public struct RenderingOptions: OptionSet {
    |                   `- note: consider making struct 'RenderingOptions' conform to the 'Sendable' protocol
137 |         public var rawValue: Int32
138 |
    :
160 |          - Important: This option has an effect only when rendering HTML.
161 |          */
162 |         public static let unsafe = Self(rawValue: CMARK_OPT_UNSAFE)
    |                           |- warning: static property 'unsafe' is not concurrency-safe because non-'Sendable' type 'Node.RenderingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
    |                           |- note: add '@MainActor' to make static property 'unsafe' part of global actor 'MainActor'
    |                           `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
163 |
164 |         /**
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Nodes/Node.swift:169:27: warning: static property 'noBreaks' is not concurrency-safe because non-'Sendable' type 'Node.RenderingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
134 |
135 |     /// Options for rendering a CommonMark document.
136 |     public struct RenderingOptions: OptionSet {
    |                   `- note: consider making struct 'RenderingOptions' conform to the 'Sendable' protocol
137 |         public var rawValue: Int32
138 |
    :
167 |          - Important: This option has no effect when rendering XML.
168 |          */
169 |         public static let noBreaks = Self(rawValue: CMARK_OPT_NOBREAKS)
    |                           |- warning: static property 'noBreaks' is not concurrency-safe because non-'Sendable' type 'Node.RenderingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
    |                           |- note: add '@MainActor' to make static property 'noBreaks' part of global actor 'MainActor'
    |                           `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
170 |
171 |         /**
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Nodes/Node.swift:176:27: warning: static property 'hardBreaks' is not concurrency-safe because non-'Sendable' type 'Node.RenderingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
134 |
135 |     /// Options for rendering a CommonMark document.
136 |     public struct RenderingOptions: OptionSet {
    |                   `- note: consider making struct 'RenderingOptions' conform to the 'Sendable' protocol
137 |         public var rawValue: Int32
138 |
    :
174 |          - Important: This option has no effect when rendering XML.
175 |          */
176 |         public static let hardBreaks = Self(rawValue: CMARK_OPT_HARDBREAKS)
    |                           |- warning: static property 'hardBreaks' is not concurrency-safe because non-'Sendable' type 'Node.RenderingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
    |                           |- note: add '@MainActor' to make static property 'hardBreaks' part of global actor 'MainActor'
    |                           `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
177 |
178 |         /**
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Nodes/Node.swift:184:27: warning: static property 'includeSourcePosition' is not concurrency-safe because non-'Sendable' type 'Node.RenderingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
134 |
135 |     /// Options for rendering a CommonMark document.
136 |     public struct RenderingOptions: OptionSet {
    |                   `- note: consider making struct 'RenderingOptions' conform to the 'Sendable' protocol
137 |         public var rawValue: Int32
138 |
    :
182 |          - Important: This option has an effect only when rendering HTML or XML.
183 |          */
184 |         public static let includeSourcePosition = Self(rawValue: CMARK_OPT_SOURCEPOS)
    |                           |- warning: static property 'includeSourcePosition' is not concurrency-safe because non-'Sendable' type 'Node.RenderingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
    |                           |- note: add '@MainActor' to make static property 'includeSourcePosition' part of global actor 'MainActor'
    |                           `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
185 |     }
186 |
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Supporting Types/Visitor.swift:12:16: warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'VisitorContinueKind' may have shared mutable state; this is an error in the Swift 6 language mode
  1 | public enum VisitorContinueKind {
    |             `- note: consider making enum 'VisitorContinueKind' conform to the 'Sendable' protocol
  2 |     /// The visitor should visit the descendents of the current node.
  3 |     case visitChildren
    :
 10 |
 11 |     /// The default is `.visitChildren`
 12 |     static let `default`: Self = .visitChildren
    |                |- warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'VisitorContinueKind' may have shared mutable state; this is an error in the Swift 6 language mode
    |                |- note: add '@MainActor' to make static property 'default' part of global actor 'MainActor'
    |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 13 |
 14 |     mutating func override(with other: Self) {
[24/50] Compiling CommonMark Strong.swift
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Nodes/Node.swift:162:27: warning: static property 'unsafe' is not concurrency-safe because non-'Sendable' type 'Node.RenderingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
134 |
135 |     /// Options for rendering a CommonMark document.
136 |     public struct RenderingOptions: OptionSet {
    |                   `- note: consider making struct 'RenderingOptions' conform to the 'Sendable' protocol
137 |         public var rawValue: Int32
138 |
    :
160 |          - Important: This option has an effect only when rendering HTML.
161 |          */
162 |         public static let unsafe = Self(rawValue: CMARK_OPT_UNSAFE)
    |                           |- warning: static property 'unsafe' is not concurrency-safe because non-'Sendable' type 'Node.RenderingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
    |                           |- note: add '@MainActor' to make static property 'unsafe' part of global actor 'MainActor'
    |                           `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
163 |
164 |         /**
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Nodes/Node.swift:169:27: warning: static property 'noBreaks' is not concurrency-safe because non-'Sendable' type 'Node.RenderingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
134 |
135 |     /// Options for rendering a CommonMark document.
136 |     public struct RenderingOptions: OptionSet {
    |                   `- note: consider making struct 'RenderingOptions' conform to the 'Sendable' protocol
137 |         public var rawValue: Int32
138 |
    :
167 |          - Important: This option has no effect when rendering XML.
168 |          */
169 |         public static let noBreaks = Self(rawValue: CMARK_OPT_NOBREAKS)
    |                           |- warning: static property 'noBreaks' is not concurrency-safe because non-'Sendable' type 'Node.RenderingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
    |                           |- note: add '@MainActor' to make static property 'noBreaks' part of global actor 'MainActor'
    |                           `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
170 |
171 |         /**
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Nodes/Node.swift:176:27: warning: static property 'hardBreaks' is not concurrency-safe because non-'Sendable' type 'Node.RenderingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
134 |
135 |     /// Options for rendering a CommonMark document.
136 |     public struct RenderingOptions: OptionSet {
    |                   `- note: consider making struct 'RenderingOptions' conform to the 'Sendable' protocol
137 |         public var rawValue: Int32
138 |
    :
174 |          - Important: This option has no effect when rendering XML.
175 |          */
176 |         public static let hardBreaks = Self(rawValue: CMARK_OPT_HARDBREAKS)
    |                           |- warning: static property 'hardBreaks' is not concurrency-safe because non-'Sendable' type 'Node.RenderingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
    |                           |- note: add '@MainActor' to make static property 'hardBreaks' part of global actor 'MainActor'
    |                           `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
177 |
178 |         /**
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Nodes/Node.swift:184:27: warning: static property 'includeSourcePosition' is not concurrency-safe because non-'Sendable' type 'Node.RenderingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
134 |
135 |     /// Options for rendering a CommonMark document.
136 |     public struct RenderingOptions: OptionSet {
    |                   `- note: consider making struct 'RenderingOptions' conform to the 'Sendable' protocol
137 |         public var rawValue: Int32
138 |
    :
182 |          - Important: This option has an effect only when rendering HTML or XML.
183 |          */
184 |         public static let includeSourcePosition = Self(rawValue: CMARK_OPT_SOURCEPOS)
    |                           |- warning: static property 'includeSourcePosition' is not concurrency-safe because non-'Sendable' type 'Node.RenderingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
    |                           |- note: add '@MainActor' to make static property 'includeSourcePosition' part of global actor 'MainActor'
    |                           `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
185 |     }
186 |
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Nodes/Node.swift:218:13: error: cannot find 'free' in scope
216 |
217 |         defer {
218 |             free(cString)
    |             `- error: cannot find 'free' in scope
219 |         }
220 |
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Nodes/Node.swift:285:50: warning: cast from '(any Node & Block)?' to unrelated type 'Self' always fails
283 |         // Unlink the children from the document node to prevent dangling pointers to the parent.
284 |         let documentChildren = document.removeChildren()
285 |         guard let block = documentChildren.first as? Self,
    |                                                  `- warning: cast from '(any Node & Block)?' to unrelated type 'Self' always fails
286 |             documentChildren.count == 1
287 |         else {
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Nodes/Node.swift:306:52: warning: cast from '(any Node & Inline)?' to unrelated type 'Self' always fails
304 |         // Unlink the children from the root node to prevent dangling pointers to the parent.
305 |         let paragraphChildren = paragraph.removeChildren()
306 |         guard let inline = paragraphChildren.first as? Self,
    |                                                    `- warning: cast from '(any Node & Inline)?' to unrelated type 'Self' always fails
307 |             paragraphChildren.count == 1
308 |         else {
[25/50] Compiling CommonMark Text.swift
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Nodes/Node.swift:162:27: warning: static property 'unsafe' is not concurrency-safe because non-'Sendable' type 'Node.RenderingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
134 |
135 |     /// Options for rendering a CommonMark document.
136 |     public struct RenderingOptions: OptionSet {
    |                   `- note: consider making struct 'RenderingOptions' conform to the 'Sendable' protocol
137 |         public var rawValue: Int32
138 |
    :
160 |          - Important: This option has an effect only when rendering HTML.
161 |          */
162 |         public static let unsafe = Self(rawValue: CMARK_OPT_UNSAFE)
    |                           |- warning: static property 'unsafe' is not concurrency-safe because non-'Sendable' type 'Node.RenderingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
    |                           |- note: add '@MainActor' to make static property 'unsafe' part of global actor 'MainActor'
    |                           `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
163 |
164 |         /**
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Nodes/Node.swift:169:27: warning: static property 'noBreaks' is not concurrency-safe because non-'Sendable' type 'Node.RenderingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
134 |
135 |     /// Options for rendering a CommonMark document.
136 |     public struct RenderingOptions: OptionSet {
    |                   `- note: consider making struct 'RenderingOptions' conform to the 'Sendable' protocol
137 |         public var rawValue: Int32
138 |
    :
167 |          - Important: This option has no effect when rendering XML.
168 |          */
169 |         public static let noBreaks = Self(rawValue: CMARK_OPT_NOBREAKS)
    |                           |- warning: static property 'noBreaks' is not concurrency-safe because non-'Sendable' type 'Node.RenderingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
    |                           |- note: add '@MainActor' to make static property 'noBreaks' part of global actor 'MainActor'
    |                           `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
170 |
171 |         /**
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Nodes/Node.swift:176:27: warning: static property 'hardBreaks' is not concurrency-safe because non-'Sendable' type 'Node.RenderingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
134 |
135 |     /// Options for rendering a CommonMark document.
136 |     public struct RenderingOptions: OptionSet {
    |                   `- note: consider making struct 'RenderingOptions' conform to the 'Sendable' protocol
137 |         public var rawValue: Int32
138 |
    :
174 |          - Important: This option has no effect when rendering XML.
175 |          */
176 |         public static let hardBreaks = Self(rawValue: CMARK_OPT_HARDBREAKS)
    |                           |- warning: static property 'hardBreaks' is not concurrency-safe because non-'Sendable' type 'Node.RenderingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
    |                           |- note: add '@MainActor' to make static property 'hardBreaks' part of global actor 'MainActor'
    |                           `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
177 |
178 |         /**
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Nodes/Node.swift:184:27: warning: static property 'includeSourcePosition' is not concurrency-safe because non-'Sendable' type 'Node.RenderingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
134 |
135 |     /// Options for rendering a CommonMark document.
136 |     public struct RenderingOptions: OptionSet {
    |                   `- note: consider making struct 'RenderingOptions' conform to the 'Sendable' protocol
137 |         public var rawValue: Int32
138 |
    :
182 |          - Important: This option has an effect only when rendering HTML or XML.
183 |          */
184 |         public static let includeSourcePosition = Self(rawValue: CMARK_OPT_SOURCEPOS)
    |                           |- warning: static property 'includeSourcePosition' is not concurrency-safe because non-'Sendable' type 'Node.RenderingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
    |                           |- note: add '@MainActor' to make static property 'includeSourcePosition' part of global actor 'MainActor'
    |                           `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
185 |     }
186 |
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Nodes/Node.swift:218:13: error: cannot find 'free' in scope
216 |
217 |         defer {
218 |             free(cString)
    |             `- error: cannot find 'free' in scope
219 |         }
220 |
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Nodes/Node.swift:285:50: warning: cast from '(any Node & Block)?' to unrelated type 'Self' always fails
283 |         // Unlink the children from the document node to prevent dangling pointers to the parent.
284 |         let documentChildren = document.removeChildren()
285 |         guard let block = documentChildren.first as? Self,
    |                                                  `- warning: cast from '(any Node & Block)?' to unrelated type 'Self' always fails
286 |             documentChildren.count == 1
287 |         else {
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Nodes/Node.swift:306:52: warning: cast from '(any Node & Inline)?' to unrelated type 'Self' always fails
304 |         // Unlink the children from the root node to prevent dangling pointers to the parent.
305 |         let paragraphChildren = paragraph.removeChildren()
306 |         guard let inline = paragraphChildren.first as? Self,
    |                                                    `- warning: cast from '(any Node & Inline)?' to unrelated type 'Self' always fails
307 |             paragraphChildren.count == 1
308 |         else {
[26/50] Compiling CommonMark Node.swift
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Nodes/Node.swift:162:27: warning: static property 'unsafe' is not concurrency-safe because non-'Sendable' type 'Node.RenderingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
134 |
135 |     /// Options for rendering a CommonMark document.
136 |     public struct RenderingOptions: OptionSet {
    |                   `- note: consider making struct 'RenderingOptions' conform to the 'Sendable' protocol
137 |         public var rawValue: Int32
138 |
    :
160 |          - Important: This option has an effect only when rendering HTML.
161 |          */
162 |         public static let unsafe = Self(rawValue: CMARK_OPT_UNSAFE)
    |                           |- warning: static property 'unsafe' is not concurrency-safe because non-'Sendable' type 'Node.RenderingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
    |                           |- note: add '@MainActor' to make static property 'unsafe' part of global actor 'MainActor'
    |                           `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
163 |
164 |         /**
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Nodes/Node.swift:169:27: warning: static property 'noBreaks' is not concurrency-safe because non-'Sendable' type 'Node.RenderingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
134 |
135 |     /// Options for rendering a CommonMark document.
136 |     public struct RenderingOptions: OptionSet {
    |                   `- note: consider making struct 'RenderingOptions' conform to the 'Sendable' protocol
137 |         public var rawValue: Int32
138 |
    :
167 |          - Important: This option has no effect when rendering XML.
168 |          */
169 |         public static let noBreaks = Self(rawValue: CMARK_OPT_NOBREAKS)
    |                           |- warning: static property 'noBreaks' is not concurrency-safe because non-'Sendable' type 'Node.RenderingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
    |                           |- note: add '@MainActor' to make static property 'noBreaks' part of global actor 'MainActor'
    |                           `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
170 |
171 |         /**
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Nodes/Node.swift:176:27: warning: static property 'hardBreaks' is not concurrency-safe because non-'Sendable' type 'Node.RenderingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
134 |
135 |     /// Options for rendering a CommonMark document.
136 |     public struct RenderingOptions: OptionSet {
    |                   `- note: consider making struct 'RenderingOptions' conform to the 'Sendable' protocol
137 |         public var rawValue: Int32
138 |
    :
174 |          - Important: This option has no effect when rendering XML.
175 |          */
176 |         public static let hardBreaks = Self(rawValue: CMARK_OPT_HARDBREAKS)
    |                           |- warning: static property 'hardBreaks' is not concurrency-safe because non-'Sendable' type 'Node.RenderingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
    |                           |- note: add '@MainActor' to make static property 'hardBreaks' part of global actor 'MainActor'
    |                           `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
177 |
178 |         /**
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Nodes/Node.swift:184:27: warning: static property 'includeSourcePosition' is not concurrency-safe because non-'Sendable' type 'Node.RenderingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
134 |
135 |     /// Options for rendering a CommonMark document.
136 |     public struct RenderingOptions: OptionSet {
    |                   `- note: consider making struct 'RenderingOptions' conform to the 'Sendable' protocol
137 |         public var rawValue: Int32
138 |
    :
182 |          - Important: This option has an effect only when rendering HTML or XML.
183 |          */
184 |         public static let includeSourcePosition = Self(rawValue: CMARK_OPT_SOURCEPOS)
    |                           |- warning: static property 'includeSourcePosition' is not concurrency-safe because non-'Sendable' type 'Node.RenderingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
    |                           |- note: add '@MainActor' to make static property 'includeSourcePosition' part of global actor 'MainActor'
    |                           `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
185 |     }
186 |
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Nodes/Node.swift:218:13: error: cannot find 'free' in scope
216 |
217 |         defer {
218 |             free(cString)
    |             `- error: cannot find 'free' in scope
219 |         }
220 |
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Nodes/Node.swift:285:50: warning: cast from '(any Node & Block)?' to unrelated type 'Self' always fails
283 |         // Unlink the children from the document node to prevent dangling pointers to the parent.
284 |         let documentChildren = document.removeChildren()
285 |         guard let block = documentChildren.first as? Self,
    |                                                  `- warning: cast from '(any Node & Block)?' to unrelated type 'Self' always fails
286 |             documentChildren.count == 1
287 |         else {
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Nodes/Node.swift:306:52: warning: cast from '(any Node & Inline)?' to unrelated type 'Self' always fails
304 |         // Unlink the children from the root node to prevent dangling pointers to the parent.
305 |         let paragraphChildren = paragraph.removeChildren()
306 |         guard let inline = paragraphChildren.first as? Self,
    |                                                    `- warning: cast from '(any Node & Inline)?' to unrelated type 'Self' always fails
307 |             paragraphChildren.count == 1
308 |         else {
[27/50] Compiling CommonMark BlockQuote.swift
[28/50] Compiling CommonMark CodeBlock.swift
[29/50] Compiling CommonMark HTMLBlock.swift
[30/50] Compiling CommonMark ThematicBreak.swift
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Nodes/Document.swift:23:27: warning: static property 'smart' is not concurrency-safe because non-'Sendable' type 'Document.ParsingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
 4 | public final class Document: Node {
 5 |     /// Options for parsing CommonMark text.
 6 |     public struct ParsingOptions: OptionSet {
   |                   `- note: consider making struct 'ParsingOptions' conform to the 'Sendable' protocol
 7 |         public var rawValue: Int32
 8 |
   :
21 |          - Three consecutive full stops (...) become an ellipsis (…)
22 |          */
23 |         public static let smart = Self(rawValue: CMARK_OPT_SMART)
   |                           |- warning: static property 'smart' is not concurrency-safe because non-'Sendable' type 'Document.ParsingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
   |                           |- note: add '@MainActor' to make static property 'smart' part of global actor 'MainActor'
   |                           `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
24 |     }
25 |
[31/50] Compiling CommonMark Document.swift
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Nodes/Document.swift:23:27: warning: static property 'smart' is not concurrency-safe because non-'Sendable' type 'Document.ParsingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
 4 | public final class Document: Node {
 5 |     /// Options for parsing CommonMark text.
 6 |     public struct ParsingOptions: OptionSet {
   |                   `- note: consider making struct 'ParsingOptions' conform to the 'Sendable' protocol
 7 |         public var rawValue: Int32
 8 |
   :
21 |          - Three consecutive full stops (...) become an ellipsis (…)
22 |          */
23 |         public static let smart = Self(rawValue: CMARK_OPT_SMART)
   |                           |- warning: static property 'smart' is not concurrency-safe because non-'Sendable' type 'Document.ParsingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
   |                           |- note: add '@MainActor' to make static property 'smart' part of global actor 'MainActor'
   |                           `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
24 |     }
25 |
[32/50] Compiling CommonMark Code.swift
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Nodes/Document.swift:23:27: warning: static property 'smart' is not concurrency-safe because non-'Sendable' type 'Document.ParsingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
 4 | public final class Document: Node {
 5 |     /// Options for parsing CommonMark text.
 6 |     public struct ParsingOptions: OptionSet {
   |                   `- note: consider making struct 'ParsingOptions' conform to the 'Sendable' protocol
 7 |         public var rawValue: Int32
 8 |
   :
21 |          - Three consecutive full stops (...) become an ellipsis (…)
22 |          */
23 |         public static let smart = Self(rawValue: CMARK_OPT_SMART)
   |                           |- warning: static property 'smart' is not concurrency-safe because non-'Sendable' type 'Document.ParsingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
   |                           |- note: add '@MainActor' to make static property 'smart' part of global actor 'MainActor'
   |                           `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
24 |     }
25 |
[33/50] Compiling CommonMark Block.swift
[34/50] Compiling CommonMark Children.swift
[35/50] Compiling CommonMark Inline.swift
[36/50] Compiling CommonMark Link.swift
[37/50] Compiling CommonMark RawHTML.swift
[38/50] Compiling CommonMark SoftLineBreak.swift
[39/50] Compiling CommonMark Emphasis.swift
[40/50] Compiling CommonMark HardLineBreak.swift
[41/50] Compiling CommonMark Image.swift
[42/50] Compiling CommonMark LineBreak.swift
[43/50] Compiling CommonMark Linked.swift
[44/50] Compiling CommonMark Heading.swift
[45/50] Compiling CommonMark List.swift
[46/50] Compiling CommonMark Paragraph.swift
[47/50] Compiling CommonMark Literal.swift
[48/50] Compiling CommonMark Visitable.swift
[49/50] Compiling CommonMark Visitor.swift
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Supporting Types/Visitor.swift:12:16: warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'VisitorContinueKind' may have shared mutable state; this is an error in the Swift 6 language mode
  1 | public enum VisitorContinueKind {
    |             `- note: consider making enum 'VisitorContinueKind' conform to the 'Sendable' protocol
  2 |     /// The visitor should visit the descendents of the current node.
  3 |     case visitChildren
    :
 10 |
 11 |     /// The default is `.visitChildren`
 12 |     static let `default`: Self = .visitChildren
    |                |- warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'VisitorContinueKind' may have shared mutable state; this is an error in the Swift 6 language mode
    |                |- note: add '@MainActor' to make static property 'default' part of global actor 'MainActor'
    |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 13 |
 14 |     mutating func override(with other: Self) {
[50/50] Compiling CommonMark Version.swift
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Supporting Types/Visitor.swift:12:16: warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'VisitorContinueKind' may have shared mutable state; this is an error in the Swift 6 language mode
  1 | public enum VisitorContinueKind {
    |             `- note: consider making enum 'VisitorContinueKind' conform to the 'Sendable' protocol
  2 |     /// The visitor should visit the descendents of the current node.
  3 |     case visitChildren
    :
 10 |
 11 |     /// The default is `.visitChildren`
 12 |     static let `default`: Self = .visitChildren
    |                |- warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'VisitorContinueKind' may have shared mutable state; this is an error in the Swift 6 language mode
    |                |- note: add '@MainActor' to make static property 'default' part of global actor 'MainActor'
    |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 13 |
 14 |     mutating func override(with other: Self) {
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64
[0/1] Planning build
Building for debugging...
[0/1] Write swift-version-2F0A5646E1D333AE.txt
[2/27] Emitting module CommonMark
[3/29] Compiling CommonMark Emphasis.swift
[4/29] Compiling CommonMark HardLineBreak.swift
[5/29] Compiling CommonMark Image.swift
[6/29] Compiling CommonMark BlockQuote.swift
[7/29] Compiling CommonMark CodeBlock.swift
[8/29] Compiling CommonMark HTMLBlock.swift
[9/29] Compiling CommonMark Strong.swift
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Nodes/Node.swift:218:13: error: cannot find 'free' in scope
216 |
217 |         defer {
218 |             free(cString)
    |             `- error: cannot find 'free' in scope
219 |         }
220 |
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Nodes/Node.swift:285:50: warning: cast from '(any Node & Block)?' to unrelated type 'Self' always fails
283 |         // Unlink the children from the document node to prevent dangling pointers to the parent.
284 |         let documentChildren = document.removeChildren()
285 |         guard let block = documentChildren.first as? Self,
    |                                                  `- warning: cast from '(any Node & Block)?' to unrelated type 'Self' always fails
286 |             documentChildren.count == 1
287 |         else {
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Nodes/Node.swift:306:52: warning: cast from '(any Node & Inline)?' to unrelated type 'Self' always fails
304 |         // Unlink the children from the root node to prevent dangling pointers to the parent.
305 |         let paragraphChildren = paragraph.removeChildren()
306 |         guard let inline = paragraphChildren.first as? Self,
    |                                                    `- warning: cast from '(any Node & Inline)?' to unrelated type 'Self' always fails
307 |             paragraphChildren.count == 1
308 |         else {
[10/29] Compiling CommonMark Text.swift
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Nodes/Node.swift:218:13: error: cannot find 'free' in scope
216 |
217 |         defer {
218 |             free(cString)
    |             `- error: cannot find 'free' in scope
219 |         }
220 |
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Nodes/Node.swift:285:50: warning: cast from '(any Node & Block)?' to unrelated type 'Self' always fails
283 |         // Unlink the children from the document node to prevent dangling pointers to the parent.
284 |         let documentChildren = document.removeChildren()
285 |         guard let block = documentChildren.first as? Self,
    |                                                  `- warning: cast from '(any Node & Block)?' to unrelated type 'Self' always fails
286 |             documentChildren.count == 1
287 |         else {
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Nodes/Node.swift:306:52: warning: cast from '(any Node & Inline)?' to unrelated type 'Self' always fails
304 |         // Unlink the children from the root node to prevent dangling pointers to the parent.
305 |         let paragraphChildren = paragraph.removeChildren()
306 |         guard let inline = paragraphChildren.first as? Self,
    |                                                    `- warning: cast from '(any Node & Inline)?' to unrelated type 'Self' always fails
307 |             paragraphChildren.count == 1
308 |         else {
[11/29] Compiling CommonMark Node.swift
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Nodes/Node.swift:218:13: error: cannot find 'free' in scope
216 |
217 |         defer {
218 |             free(cString)
    |             `- error: cannot find 'free' in scope
219 |         }
220 |
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Nodes/Node.swift:285:50: warning: cast from '(any Node & Block)?' to unrelated type 'Self' always fails
283 |         // Unlink the children from the document node to prevent dangling pointers to the parent.
284 |         let documentChildren = document.removeChildren()
285 |         guard let block = documentChildren.first as? Self,
    |                                                  `- warning: cast from '(any Node & Block)?' to unrelated type 'Self' always fails
286 |             documentChildren.count == 1
287 |         else {
/Users/admin/builder/spi-builder-workspace/Sources/CommonMark/Nodes/Node.swift:306:52: warning: cast from '(any Node & Inline)?' to unrelated type 'Self' always fails
304 |         // Unlink the children from the root node to prevent dangling pointers to the parent.
305 |         let paragraphChildren = paragraph.removeChildren()
306 |         guard let inline = paragraphChildren.first as? Self,
    |                                                    `- warning: cast from '(any Node & Inline)?' to unrelated type 'Self' always fails
307 |             paragraphChildren.count == 1
308 |         else {
[12/29] Compiling CommonMark Heading.swift
[13/29] Compiling CommonMark List.swift
[14/29] Compiling CommonMark Paragraph.swift
[15/29] Compiling CommonMark ThematicBreak.swift
[16/29] Compiling CommonMark Document.swift
[17/29] Compiling CommonMark Code.swift
[18/29] Compiling CommonMark Block.swift
[19/29] Compiling CommonMark Children.swift
[20/29] Compiling CommonMark Inline.swift
[21/29] Compiling CommonMark Visitor.swift
[22/29] Compiling CommonMark Version.swift
[23/29] Compiling CommonMark LineBreak.swift
[24/29] Compiling CommonMark Linked.swift
[25/29] Compiling CommonMark Link.swift
[26/29] Compiling CommonMark RawHTML.swift
[27/29] Compiling CommonMark SoftLineBreak.swift
[28/29] Compiling CommonMark Literal.swift
[29/29] Compiling CommonMark Visitable.swift
BUILD FAILURE 6.1 macosSpm