The Swift Package Index logo.Swift Package Index

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 Markdown, reference main (ad895d), with Swift 6.1 for Linux on 25 Apr 2025 12:14:07 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/twostraws/markdown.git
Reference: main
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/twostraws/markdown
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at ad895d1 Updated README.
Cloned https://github.com/twostraws/markdown.git
Revision (git rev-parse @):
ad895d1cd77d4f6b6775497cbff7b0c5995f7485
SUCCESS checkout https://github.com/twostraws/markdown.git at main
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/twostraws/markdown.git
https://github.com/twostraws/markdown.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Markdown",
  "name" : "Markdown",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Markdown",
      "targets" : [
        "Markdown"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "discount",
      "module_type" : "SystemLibraryTarget",
      "name" : "discount",
      "path" : "Sources/discount",
      "product_memberships" : [
        "Markdown"
      ],
      "sources" : [
      ],
      "type" : "system-target"
    },
    {
      "c99name" : "MarkdownTests",
      "module_type" : "SwiftTarget",
      "name" : "MarkdownTests",
      "path" : "Tests/MarkdownTests",
      "sources" : [
        "MarkdownTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "Markdown"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Markdown",
      "module_type" : "SwiftTarget",
      "name" : "Markdown",
      "path" : "Sources/Markdown",
      "product_memberships" : [
        "Markdown"
      ],
      "sources" : [
        "Markdown.swift",
        "ParseOptions.swift"
      ],
      "target_dependencies" : [
        "discount"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.0"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-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-6.1-latest: Pulling from finestructure/spi-images
Digest: sha256:3bdcac04179f4ed3e5b8e9dbd6e74bbf5ebc0f4fde48bbaad7d1e5c757e65bcb
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.1-latest
warning: you may be able to install libmarkdown using your system-packager:
    apt-get install libmarkdown2-dev
warning: you may be able to install libmarkdown using your system-packager:
    apt-get install libmarkdown2-dev
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-24593BA9C3E375BF.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[3/5] Emitting module Markdown
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "discount.h"
  |          `- note: in file included from <module-includes>:1:
2 |
/host/spi-builder-workspace/Sources/discount/discount.h:1:10: error: 'mkdio.h' file not found
1 | #include <mkdio.h>
  |          `- error: 'mkdio.h' file not found
2 |
/host/spi-builder-workspace/Sources/Markdown/Markdown.swift:1:8: error: could not build C module 'Discount'
 1 | import Discount
   |        `- error: could not build C module 'Discount'
 2 |
 3 | /// Stores the compiled Markdown for a string. This must be a class because it has a custom deinitializer to release the underlying memory.
[4/5] Compiling Markdown ParseOptions.swift
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "discount.h"
  |          `- note: in file included from <module-includes>:1:
2 |
/host/spi-builder-workspace/Sources/discount/discount.h:1:10: error: 'mkdio.h' file not found
1 | #include <mkdio.h>
  |          `- error: 'mkdio.h' file not found
2 |
/host/spi-builder-workspace/Sources/Markdown/Markdown.swift:1:8: error: could not build C module 'Discount'
 1 | import Discount
   |        `- error: could not build C module 'Discount'
 2 |
 3 | /// Stores the compiled Markdown for a string. This must be a class because it has a custom deinitializer to release the underlying memory.
[5/5] Compiling Markdown Markdown.swift
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "discount.h"
  |          `- note: in file included from <module-includes>:1:
2 |
/host/spi-builder-workspace/Sources/discount/discount.h:1:10: error: 'mkdio.h' file not found
1 | #include <mkdio.h>
  |          `- error: 'mkdio.h' file not found
2 |
/host/spi-builder-workspace/Sources/Markdown/Markdown.swift:1:8: error: could not build C module 'Discount'
 1 | import Discount
   |        `- error: could not build C module 'Discount'
 2 |
 3 | /// Stores the compiled Markdown for a string. This must be a class because it has a custom deinitializer to release the underlying memory.
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu 2>&1
basic-6.1-latest: Pulling from finestructure/spi-images
Digest: sha256:3bdcac04179f4ed3e5b8e9dbd6e74bbf5ebc0f4fde48bbaad7d1e5c757e65bcb
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.1-latest
warning: you may be able to install libmarkdown using your system-packager:
    apt-get install libmarkdown2-dev
warning: you may be able to install libmarkdown using your system-packager:
    apt-get install libmarkdown2-dev
[0/1] Planning build
Building for debugging...
[0/1] Write swift-version-24593BA9C3E375BF.txt
[2/4] Compiling Markdown ParseOptions.swift
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "discount.h"
  |          `- note: in file included from <module-includes>:1:
2 |
/host/spi-builder-workspace/Sources/discount/discount.h:1:10: error: 'mkdio.h' file not found
1 | #include <mkdio.h>
  |          `- error: 'mkdio.h' file not found
2 |
/host/spi-builder-workspace/Sources/Markdown/Markdown.swift:1:8: error: could not build C module 'Discount'
 1 | import Discount
   |        `- error: could not build C module 'Discount'
 2 |
 3 | /// Stores the compiled Markdown for a string. This must be a class because it has a custom deinitializer to release the underlying memory.
[3/4] Compiling Markdown Markdown.swift
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "discount.h"
  |          `- note: in file included from <module-includes>:1:
2 |
/host/spi-builder-workspace/Sources/discount/discount.h:1:10: error: 'mkdio.h' file not found
1 | #include <mkdio.h>
  |          `- error: 'mkdio.h' file not found
2 |
/host/spi-builder-workspace/Sources/Markdown/Markdown.swift:1:8: error: could not build C module 'Discount'
 1 | import Discount
   |        `- error: could not build C module 'Discount'
 2 |
 3 | /// Stores the compiled Markdown for a string. This must be a class because it has a custom deinitializer to release the underlying memory.
error: emit-module command failed with exit code 1 (use -v to see invocation)
[4/4] Emitting module Markdown
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "discount.h"
  |          `- note: in file included from <module-includes>:1:
2 |
/host/spi-builder-workspace/Sources/discount/discount.h:1:10: error: 'mkdio.h' file not found
1 | #include <mkdio.h>
  |          `- error: 'mkdio.h' file not found
2 |
/host/spi-builder-workspace/Sources/Markdown/Markdown.swift:1:8: error: could not build C module 'Discount'
 1 | import Discount
   |        `- error: could not build C module 'Discount'
 2 |
 3 | /// Stores the compiled Markdown for a string. This must be a class because it has a custom deinitializer to release the underlying memory.
BUILD FAILURE 6.1 linux