The Swift Package Index logo.Swift Package Index

Has it really been five years since Swift Package Index launched? Read our anniversary blog post!

Build Information

Failed to build slipstream, reference main (8c2151), with Swift 6.1 for Wasm on 27 Jun 2025 19:40:35 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:wasm-6.1-latest swift build --swift-sdk wasm32-unknown-wasi 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.64.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/ClutchEngineering/slipstream.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/ClutchEngineering/slipstream
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 8c21519 Add multi-threaded rendering support and upgrade to Swift 6.1 (#209)
Cloned https://github.com/ClutchEngineering/slipstream.git
Revision (git rev-parse @):
8c215192675d339ce26cf78a1eb9999d3cf47941
SUCCESS checkout https://github.com/ClutchEngineering/slipstream.git at main
========================================
Build
========================================
Selected platform:         wasm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/ClutchEngineering/slipstream.git
https://github.com/ClutchEngineering/slipstream.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
error: 'spi-builder-workspace': package 'spi-builder-workspace' is using Swift tools version 6.1.0 but the installed version is 6.0.2
error: fatalError
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:wasm-6.1-latest swift build --swift-sdk wasm32-unknown-wasi -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
wasm-6.1-latest: Pulling from finestructure/spi-images
Digest: sha256:8f9255989265d824b88e7d572b1a334a0dc9b701075ede1970390db95d315c35
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:wasm-6.1-latest
Fetching https://github.com/apple/swift-markdown.git
[1/6799] Fetching swift-markdown
Fetched https://github.com/apple/swift-markdown.git from cache (0.90s)
Fetching https://github.com/swiftlang/swift-cmark.git
[1/18117] Fetching swift-cmark
Fetched https://github.com/swiftlang/swift-cmark.git from cache (0.80s)
Fetching https://github.com/swiftlang/swift-docc-plugin
Fetching https://github.com/scinfu/SwiftSoup.git
[1/2082] Fetching swift-docc-plugin
[231/5998] Fetching swift-docc-plugin, swiftsoup
Fetched https://github.com/swiftlang/swift-docc-plugin from cache (0.41s)
Fetched https://github.com/scinfu/SwiftSoup.git from cache (0.43s)
Computing version for https://github.com/swiftlang/swift-docc-plugin
Computed https://github.com/swiftlang/swift-docc-plugin at 1.4.4 (0.91s)
Fetching https://github.com/swiftlang/swift-docc-symbolkit
[1/3418] Fetching swift-docc-symbolkit
Fetched https://github.com/swiftlang/swift-docc-symbolkit from cache (0.43s)
Computing version for https://github.com/scinfu/SwiftSoup.git
Computed https://github.com/scinfu/SwiftSoup.git at 2.8.8 (0.85s)
Computing version for https://github.com/swiftlang/swift-docc-symbolkit
Computed https://github.com/swiftlang/swift-docc-symbolkit at 1.0.0 (0.50s)
Creating working copy for https://github.com/scinfu/SwiftSoup.git
Working copy of https://github.com/scinfu/SwiftSoup.git resolved at 2.8.8
Creating working copy for https://github.com/swiftlang/swift-docc-plugin
Working copy of https://github.com/swiftlang/swift-docc-plugin resolved at 1.4.4
Creating working copy for https://github.com/apple/swift-markdown.git
Working copy of https://github.com/apple/swift-markdown.git resolved at main (c281baa)
Creating working copy for https://github.com/swiftlang/swift-cmark.git
Working copy of https://github.com/swiftlang/swift-cmark.git resolved at gfm (b97d094)
Creating working copy for https://github.com/swiftlang/swift-docc-symbolkit
Working copy of https://github.com/swiftlang/swift-docc-symbolkit resolved at 1.0.0
[1/1] Compiling plugin Swift-DocC Preview
[2/2] Compiling plugin Swift-DocC
Building for debugging...
[2/42] Compiling cmark-gfm cmark_ctype.c
[3/42] Compiling cmark-gfm houdini_href_e.c
[3/42] Compiling cmark-gfm houdini_html_e.c
[5/42] Compiling cmark-gfm footnotes.c
[6/42] Compiling cmark-gfm-extensions tagfilter.c
[7/42] Compiling cmark-gfm commonmark.c
[8/42] Compiling cmark-gfm-extensions tasklist.c
[9/42] Compiling cmark-gfm-extensions strikethrough.c
[10/42] Compiling cmark-gfm-extensions ext_scanners.c
/host/spi-builder-workspace/.build/checkouts/swift-cmark/extensions/core-extensions.c:22:1: error: type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int [-Wimplicit-int]
   22 | CMARK_DEFINE_ONCE(registered);
      | ^
      | int
/host/spi-builder-workspace/.build/checkouts/swift-cmark/extensions/core-extensions.c:22:19: error: a parameter list without types is only allowed in a function definition
   22 | CMARK_DEFINE_ONCE(registered);
      |                   ^
/host/spi-builder-workspace/.build/checkouts/swift-cmark/extensions/core-extensions.c:30:3: error: call to undeclared function 'CMARK_RUN_ONCE'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
   30 |   CMARK_RUN_ONCE(registered, register_plugins);
      |   ^
/host/spi-builder-workspace/.build/checkouts/swift-cmark/extensions/core-extensions.c:30:18: error: use of undeclared identifier 'registered'
   30 |   CMARK_RUN_ONCE(registered, register_plugins);
      |                  ^
4 errors generated.
[11/42] Compiling cmark-gfm-extensions core-extensions.c
[11/42] Compiling cmark-gfm utf8.c
[11/42] Compiling cmark-gfm houdini_html_u.c
[11/42] Compiling cmark-gfm xml.c
[11/42] Compiling cmark-gfm-extensions autolink.c
[11/42] Compiling cmark-gfm-extensions table.c
[11/42] Write swift-version-24593BA9C3E375BF.txt
[11/42] Compiling cmark-gfm html.c
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:wasm-6.1-latest swift build --swift-sdk wasm32-unknown-wasi 2>&1
wasm-6.1-latest: Pulling from finestructure/spi-images
Digest: sha256:8f9255989265d824b88e7d572b1a334a0dc9b701075ede1970390db95d315c35
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:wasm-6.1-latest
[0/1] Planning build
[1/1] Compiling plugin Swift-DocC Preview
[2/2] Compiling plugin Swift-DocC
Building for debugging...
[2/34] Write sources
/host/spi-builder-workspace/.build/checkouts/swift-cmark/extensions/core-extensions.c:22:1: error: type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int [-Wimplicit-int]
   22 | CMARK_DEFINE_ONCE(registered);
      | ^
      | int
/host/spi-builder-workspace/.build/checkouts/swift-cmark/extensions/core-extensions.c:22:19: error: a parameter list without types is only allowed in a function definition
   22 | CMARK_DEFINE_ONCE(registered);
      |                   ^
/host/spi-builder-workspace/.build/checkouts/swift-cmark/extensions/core-extensions.c:30:3: error: call to undeclared function 'CMARK_RUN_ONCE'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
   30 |   CMARK_RUN_ONCE(registered, register_plugins);
      |   ^
/host/spi-builder-workspace/.build/checkouts/swift-cmark/extensions/core-extensions.c:30:18: error: use of undeclared identifier 'registered'
   30 |   CMARK_RUN_ONCE(registered, register_plugins);
      |                  ^
4 errors generated.
[3/33] Compiling cmark-gfm-extensions core-extensions.c
[3/33] Compiling cmark-gfm syntax_extension.c
[3/33] Compiling cmark-gfm utf8.c
[3/33] Compiling cmark-gfm scanners.c
[3/33] Compiling cmark-gfm-extensions autolink.c
[3/33] Compiling cmark-gfm-extensions table.c
[3/33] Compiling cmark-gfm xml.c
[3/33] Write swift-version-24593BA9C3E375BF.txt
BUILD FAILURE 6.1 wasm