Swift Package IndexBuild Information
Failed to build swift-gzip, reference 1.2.3 (97c502), with Swift 6.3 for Wasm on 18 Apr 2026 14:39:33 UTC.
Build Command
bash -c docker run --pull=always --rm -v "checkouts-4609320-2":/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-6.3-latest swift build --swift-sdk swift-6.3-RELEASE_wasm 2>&1Build Log
========================================
RunAll
========================================
Builder version: 4.70.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/mihai8804858/swift-gzip.git
Reference: 1.2.3
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/mihai8804858/swift-gzip
* tag 1.2.3 -> FETCH_HEAD
HEAD is now at 97c502f Fix file hierarchy
Cloned https://github.com/mihai8804858/swift-gzip.git
Revision (git rev-parse @):
97c502f10283dbd80eda534d164b715c9c973d72
SUCCESS checkout https://github.com/mihai8804858/swift-gzip.git at 1.2.3
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Build
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Selected platform: wasm
Swift version: 6.3
Building package at path: $PWD
https://github.com/mihai8804858/swift-gzip.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-2":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/swiftpackageindex/spi-images:wasm-6.3-latest swift build --swift-sdk swift-6.3-RELEASE_wasm 2>&1
wasm-6.3-latest: Pulling from swiftpackageindex/spi-images
Digest: sha256:d69f4e7582c319245442d62a08b2d7c7fd5a0c0c69f5d2ef11d1530cd8d3329b
Status: Image is up to date for registry.gitlab.com/swiftpackageindex/spi-images:wasm-6.3-latest
Building for debugging...
[0/3] Copying PrivacyInfo.xcprivacy
[1/3] Write sources
[2/3] Write swift-version-24593BA9C3E375BF.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[4/19] Emitting module SwiftGzip
/host/spi-builder-workspace/Sources/SwiftGzip/GzipCompressor/GzipCompressor+Data.swift:5:8: error: no such module 'zlib'
3 | import CZlib
4 | #else
5 | import zlib
| `- error: no such module 'zlib'
6 | #endif
7 |
[5/21] Compiling SwiftGzip CompressionLevel.swift
/host/spi-builder-workspace/Sources/SwiftGzip/GzipCompressor/GzipCompressor+Data.swift:5:8: error: no such module 'zlib'
3 | import CZlib
4 | #else
5 | import zlib
| `- error: no such module 'zlib'
6 | #endif
7 |
[6/21] Compiling SwiftGzip Constants.swift
/host/spi-builder-workspace/Sources/SwiftGzip/GzipCompressor/GzipCompressor+Data.swift:5:8: error: no such module 'zlib'
3 | import CZlib
4 | #else
5 | import zlib
| `- error: no such module 'zlib'
6 | #endif
7 |
[7/21] Compiling SwiftGzip GzipError.swift
/host/spi-builder-workspace/Sources/SwiftGzip/GzipCompressor/GzipCompressor+Data.swift:5:8: error: no such module 'zlib'
3 | import CZlib
4 | #else
5 | import zlib
| `- error: no such module 'zlib'
6 | #endif
7 |
[8/21] Compiling SwiftGzip resource_bundle_accessor.swift
/host/spi-builder-workspace/Sources/SwiftGzip/GzipCompressor/GzipCompressor+Data.swift:5:8: error: no such module 'zlib'
3 | import CZlib
4 | #else
5 | import zlib
| `- error: no such module 'zlib'
6 | #endif
7 |
[9/21] Compiling SwiftGzip GzipDecompressor+URL.swift
/host/spi-builder-workspace/Sources/SwiftGzip/GzipCompressor/GzipCompressor+Data.swift:5:8: error: no such module 'zlib'
3 | import CZlib
4 | #else
5 | import zlib
| `- error: no such module 'zlib'
6 | #endif
7 |
[10/21] Compiling SwiftGzip GzipDecompressor.swift
/host/spi-builder-workspace/Sources/SwiftGzip/GzipCompressor/GzipCompressor+Data.swift:5:8: error: no such module 'zlib'
3 | import CZlib
4 | #else
5 | import zlib
| `- error: no such module 'zlib'
6 | #endif
7 |
[11/21] Compiling SwiftGzip GzipCompressor.swift
/host/spi-builder-workspace/Sources/SwiftGzip/GzipCompressor/GzipCompressor+Data.swift:5:8: error: no such module 'zlib'
3 | import CZlib
4 | #else
5 | import zlib
| `- error: no such module 'zlib'
6 | #endif
7 |
[12/21] Compiling SwiftGzip GzipDecompressor+Data.swift
/host/spi-builder-workspace/Sources/SwiftGzip/GzipCompressor/GzipCompressor+Data.swift:5:8: error: no such module 'zlib'
3 | import CZlib
4 | #else
5 | import zlib
| `- error: no such module 'zlib'
6 | #endif
7 |
[13/21] Compiling SwiftGzip GzipCompressor+UInt8.swift
/host/spi-builder-workspace/Sources/SwiftGzip/GzipCompressor/GzipCompressor+Data.swift:5:8: error: no such module 'zlib'
3 | import CZlib
4 | #else
5 | import zlib
| `- error: no such module 'zlib'
6 | #endif
7 |
[14/21] Compiling SwiftGzip GzipCompressor+URL.swift
/host/spi-builder-workspace/Sources/SwiftGzip/GzipCompressor/GzipCompressor+Data.swift:5:8: error: no such module 'zlib'
3 | import CZlib
4 | #else
5 | import zlib
| `- error: no such module 'zlib'
6 | #endif
7 |
[15/21] Compiling SwiftGzip GzipDecompressor+Stream.swift
/host/spi-builder-workspace/Sources/SwiftGzip/GzipCompressor/GzipCompressor+Data.swift:5:8: error: no such module 'zlib'
3 | import CZlib
4 | #else
5 | import zlib
| `- error: no such module 'zlib'
6 | #endif
7 |
[16/21] Compiling SwiftGzip GzipDecompressor+UInt8.swift
/host/spi-builder-workspace/Sources/SwiftGzip/GzipCompressor/GzipCompressor+Data.swift:5:8: error: no such module 'zlib'
3 | import CZlib
4 | #else
5 | import zlib
| `- error: no such module 'zlib'
6 | #endif
7 |
[17/21] Compiling SwiftGzip GzipCompressor+Data.swift
/host/spi-builder-workspace/Sources/SwiftGzip/GzipCompressor/GzipCompressor+Data.swift:5:8: error: no such module 'zlib'
3 | import CZlib
4 | #else
5 | import zlib
| `- error: no such module 'zlib'
6 | #endif
7 |
[18/21] Compiling SwiftGzip GzipCompressor+Stream.swift
/host/spi-builder-workspace/Sources/SwiftGzip/GzipCompressor/GzipCompressor+Data.swift:5:8: error: no such module 'zlib'
3 | import CZlib
4 | #else
5 | import zlib
| `- error: no such module 'zlib'
6 | #endif
7 |
[19/21] Compiling SwiftGzip Data.swift
/host/spi-builder-workspace/Sources/SwiftGzip/GzipCompressor/GzipCompressor+Data.swift:5:8: error: no such module 'zlib'
3 | import CZlib
4 | #else
5 | import zlib
| `- error: no such module 'zlib'
6 | #endif
7 |
[20/21] Compiling SwiftGzip UInt8.swift
/host/spi-builder-workspace/Sources/SwiftGzip/GzipCompressor/GzipCompressor+Data.swift:5:8: error: no such module 'zlib'
3 | import CZlib
4 | #else
5 | import zlib
| `- error: no such module 'zlib'
6 | #endif
7 |
[21/21] Compiling SwiftGzip URL.swift
/host/spi-builder-workspace/Sources/SwiftGzip/GzipCompressor/GzipCompressor+Data.swift:5:8: error: no such module 'zlib'
3 | import CZlib
4 | #else
5 | import zlib
| `- error: no such module 'zlib'
6 | #endif
7 |
BUILD FAILURE 6.3 wasm