Swift Package IndexBuild Information
Failed to build swift-image-formats, reference v0.5.0 (d735e0), with Swift 6.2 for Wasm on 25 Mar 2026 08:17:08 UTC.
Build Command
bash -c docker run --pull=always --rm -v "checkouts-4606859-1":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/swiftpackageindex/spi-images:wasm-6.2-latest swift build --swift-sdk wasm32-unknown-wasip1 2>&1Build Log
========================================
RunAll
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Builder version: 4.69.2
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/stackotter/swift-image-formats.git
Reference: v0.5.0
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/stackotter/swift-image-formats
* tag v0.5.0 -> FETCH_HEAD
HEAD is now at d735e0e Implement naive linear downscaling (#5)
Cloned https://github.com/stackotter/swift-image-formats.git
Revision (git rev-parse @):
d735e0ed3d4a4aed50f4042494e7c769b5b70229
SUCCESS checkout https://github.com/stackotter/swift-image-formats.git at v0.5.0
========================================
Build
========================================
Selected platform: wasm
Swift version: 6.2
Building package at path: $PWD
https://github.com/stackotter/swift-image-formats.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-1":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/swiftpackageindex/spi-images:wasm-6.2-latest swift build --swift-sdk wasm32-unknown-wasip1 2>&1
wasm-6.2-latest: Pulling from swiftpackageindex/spi-images
Digest: sha256:33aba1b4ee401c56e0fd7ee42e05ab1ffc0b6f44277ad19cffda5d456eb09500
Status: Image is up to date for registry.gitlab.com/swiftpackageindex/spi-images:wasm-6.2-latest
warning: multiple Swift SDKs match target triple `wasm32-unknown-wasip1` and host triple x86_64-unknown-linux-gnu, selected one at /root/.swiftpm/swift-sdks/swift-6.2-RELEASE_wasm.artifactbundle/swift-6.2-RELEASE_wasm/wasm32-unknown-wasip1/swift-sdk.json
Fetching https://github.com/the-swift-collective/libwebp
Fetching https://github.com/the-swift-collective/libpng
[1/54] Fetching libwebp
[55/84] Fetching libwebp, libpng
Fetched https://github.com/the-swift-collective/libwebp from cache (0.35s)
Fetching https://github.com/stackotter/jpeg
Fetched https://github.com/the-swift-collective/libpng from cache (0.37s)
[1/3111] Fetching jpeg
Fetched https://github.com/stackotter/jpeg from cache (7.56s)
Computing version for https://github.com/the-swift-collective/libwebp
Computed https://github.com/the-swift-collective/libwebp at 1.4.1 (8.62s)
Computing version for https://github.com/stackotter/jpeg
Computed https://github.com/stackotter/jpeg at 1.0.2 (0.56s)
Computing version for https://github.com/the-swift-collective/libpng
Computed https://github.com/the-swift-collective/libpng at 1.6.45 (0.80s)
Fetching https://github.com/the-swift-collective/zlib.git
[1/48] Fetching zlib
Fetched https://github.com/the-swift-collective/zlib.git from cache (1.56s)
Computing version for https://github.com/the-swift-collective/zlib.git
Computed https://github.com/the-swift-collective/zlib.git at 1.3.2 (2.05s)
Creating working copy for https://github.com/stackotter/jpeg
Working copy of https://github.com/stackotter/jpeg resolved at 1.0.2
Creating working copy for https://github.com/the-swift-collective/libpng
Working copy of https://github.com/the-swift-collective/libpng resolved at 1.6.45
Creating working copy for https://github.com/the-swift-collective/libwebp
Working copy of https://github.com/the-swift-collective/libwebp resolved at 1.4.1
Creating working copy for https://github.com/the-swift-collective/zlib.git
Working copy of https://github.com/the-swift-collective/zlib.git resolved at 1.3.2
Building for debugging...
[0/192] Compiling ZLibC gzclose.c
[0/192] Compiling sharpyuv_neon.c
[2/192] Compiling ZLibC adler32.c
[3/192] Compiling sharpyuv_sse2.c
[4/192] Compiling sharpyuv_cpu.c
[5/192] Compiling sharpyuv_csp.c
[6/192] Compiling wicdec.c
[7/192] Compiling sharpyuv_dsp.c
[8/192] Write swift-version-24593BA9C3E375BF.txt
[9/192] Compiling ZLibC compress.c
[10/192] Compiling pnglibconf pnglibconf.c
[11/192] Compiling sharpyuv_gamma.c
[12/192] Compiling tiffdec.c
[13/192] Compiling sharpyuv.c
[14/192] Compiling metadata.c
[14/192] Compiling pngdec.c
[16/192] Compiling webpdec.c
[17/192] Compiling jpegdec.c
[18/192] Compiling pnmdec.c
[19/192] Compiling image_dec.c
[19/192] Compiling imageio_util.c
[21/192] Compiling ZLibC uncompr.c
[22/192] Compiling ZLibC zutil.c
[23/192] Compiling ZLibC inftrees.c
[24/192] Compiling image_enc.c
[25/192] Compiling ZLibC inffast.c
[26/192] Compiling ZLibC infback.c
[26/192] Write sources
/host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzwrite.c:78:20: error: call to undeclared function 'write'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
78 | writ = write(state->fd, strm->next_in, put);
| ^
/host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzwrite.c:78:20: note: did you mean 'fwrite'?
/root/.swiftpm/swift-sdks/swift-6.2-RELEASE_wasm.artifactbundle/swift-6.2-RELEASE_wasm/wasm32-unknown-wasip1/WASI.sdk/include/wasm32-wasip1/stdio.h:103:8: note: 'fwrite' declared here
103 | size_t fwrite(const void *__restrict, size_t, size_t, FILE *__restrict);
| ^
/host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzwrite.c:108:24: error: call to undeclared function 'write'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
108 | writ = write(state->fd, state->x.next, put);
| ^
/host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzwrite.c:627:9: error: call to undeclared function 'close'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
627 | if (close(state->fd) == -1)
| ^
/host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzwrite.c:627:9: note: did you mean 'fclose'?
/root/.swiftpm/swift-sdks/swift-6.2-RELEASE_wasm.artifactbundle/swift-6.2-RELEASE_wasm/wasm32-unknown-wasip1/WASI.sdk/include/wasm32-wasip1/stdio.h:85:5: note: 'fclose' declared here
85 | int fclose(FILE *);
| ^
3 errors generated.
[33/192] Compiling ZLibC gzwrite.c
/host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzread.c:22:15: error: call to undeclared function 'read'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
22 | ret = read(state->fd, buf + *have, get);
| ^
/host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzread.c:22:15: note: did you mean 'fread'?
/root/.swiftpm/swift-sdks/swift-6.2-RELEASE_wasm.artifactbundle/swift-6.2-RELEASE_wasm/wasm32-unknown-wasip1/WASI.sdk/include/wasm32-wasip1/stdio.h:102:8: note: 'fread' declared here
102 | size_t fread(void *__restrict, size_t, size_t, FILE *__restrict);
| ^
/host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzread.c:600:11: error: call to undeclared function 'close'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
600 | ret = close(state->fd);
| ^
/host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzread.c:600:11: note: did you mean 'fclose'?
/root/.swiftpm/swift-sdks/swift-6.2-RELEASE_wasm.artifactbundle/swift-6.2-RELEASE_wasm/wasm32-unknown-wasip1/WASI.sdk/include/wasm32-wasip1/stdio.h:85:5: note: 'fclose' declared here
85 | int fclose(FILE *);
| ^
2 errors generated.
[33/192] Compiling ZLibC gzread.c
[33/192] Compiling ZLibC deflate.c
[33/192] Compiling ZLibC crc32.c
[33/192] Compiling ZLibC inflate.c
[33/192] Compiling ZLibC trees.c
/host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzlib.c:245:9: error: call to undeclared function 'lseek'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
245 | LSEEK(state->fd, 0, SEEK_END); /* so gzoffset() is correct */
| ^
/host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzlib.c:15:17: note: expanded from macro 'LSEEK'
15 | # define LSEEK lseek
| ^
/host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzlib.c:245:9: note: did you mean 'fseek'?
/host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzlib.c:15:17: note: expanded from macro 'LSEEK'
15 | # define LSEEK lseek
| ^
/root/.swiftpm/swift-sdks/swift-6.2-RELEASE_wasm.artifactbundle/swift-6.2-RELEASE_wasm/wasm32-unknown-wasip1/WASI.sdk/include/wasm32-wasip1/stdio.h:95:5: note: 'fseek' declared here
95 | int fseek(FILE *, long, int);
| ^
/host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzlib.c:251:24: error: call to undeclared function 'lseek'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
251 | state->start = LSEEK(state->fd, 0, SEEK_CUR);
| ^
/host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzlib.c:15:17: note: expanded from macro 'LSEEK'
15 | # [33/192] Compiling ZLibC gzlib.c
BUILD FAILURE 6.2 wasm