Swift Package Index

Build Information

Failed to build Unarchiver, reference 0.0.5 (7a925b), with Swift 6.3 for Wasm on 21 Apr 2026 07:48:19 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/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

Build Log

========================================
RunAll
========================================
Builder version: 4.70.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/Octadero/Unarchiver.git
Reference: 0.0.5
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/Octadero/Unarchiver
 * tag               0.0.5      -> FETCH_HEAD
HEAD is now at 7a925bc Updated License, move on Apache.
Cloned https://github.com/Octadero/Unarchiver.git
Revision (git rev-parse @):
7a925bc0854c5544ad8cb59f24c301682e0f2f7a
SUCCESS checkout https://github.com/Octadero/Unarchiver.git at 0.0.5
========================================
Build
========================================
Selected platform:         wasm
Swift version:             6.3
Building package at path:  $PWD
https://github.com/Octadero/Unarchiver.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$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
Fetching https://github.com/Octadero/CZlib.git
[1/15] Fetching czlib
Fetched https://github.com/Octadero/CZlib.git from cache (0.22s)
Computing version for https://github.com/Octadero/CZlib.git
Computed https://github.com/Octadero/CZlib.git at 0.0.5 (0.67s)
Creating working copy for https://github.com/Octadero/CZlib.git
Working copy of https://github.com/Octadero/CZlib.git resolved at 0.0.5
warning: 'czlib': ignoring declared target(s) 'CZlib' in the system package
warning: 'spi-builder-workspace': dependency 'czlib' is not used by any target
warning: you may be able to install libz using your system-packager:
    apt-get install libz-dev
warning: you may be able to install libz using your system-packager:
    apt-get install libz-dev
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-24593BA9C3E375BF.txt
[3/5] Compiling Unarchiver Unarchiver.swift
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "shim.h"
  |          `- note: in file included from <module-includes>:1:
2 |
/host/spi-builder-workspace/.build/checkouts/CZlib/shim.h:22:10: error: 'zlib.h' file not found
20 |
21 |  #import <stdio.h>
22 |  #import <zlib.h>
   |          `- error: 'zlib.h' file not found
23 |
24 |  #endif
/host/spi-builder-workspace/Sources/Unarchiver/Data.swift:21:8: error: could not build C module 'CZlib'
 19 |
 20 | import Foundation
 21 | import CZlib
    |        `- error: could not build C module 'CZlib'
 22 |
 23 | /// Compression level whose rawValue is based on the zlib's constants.
error: emit-module command failed with exit code 1 (use -v to see invocation)
[4/5] Emitting module Unarchiver
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "shim.h"
  |          `- note: in file included from <module-includes>:1:
2 |
/host/spi-builder-workspace/.build/checkouts/CZlib/shim.h:22:10: error: 'zlib.h' file not found
20 |
21 |  #import <stdio.h>
22 |  #import <zlib.h>
   |          `- error: 'zlib.h' file not found
23 |
24 |  #endif
/host/spi-builder-workspace/Sources/Unarchiver/Data.swift:21:8: error: could not build C module 'CZlib'
 19 |
 20 | import Foundation
 21 | import CZlib
    |        `- error: could not build C module 'CZlib'
 22 |
 23 | /// Compression level whose rawValue is based on the zlib's constants.
[5/5] Compiling Unarchiver Data.swift
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "shim.h"
  |          `- note: in file included from <module-includes>:1:
2 |
/host/spi-builder-workspace/.build/checkouts/CZlib/shim.h:22:10: error: 'zlib.h' file not found
20 |
21 |  #import <stdio.h>
22 |  #import <zlib.h>
   |          `- error: 'zlib.h' file not found
23 |
24 |  #endif
/host/spi-builder-workspace/Sources/Unarchiver/Data.swift:21:8: error: could not build C module 'CZlib'
 19 |
 20 | import Foundation
 21 | import CZlib
    |        `- error: could not build C module 'CZlib'
 22 |
 23 | /// Compression level whose rawValue is based on the zlib's constants.
BUILD FAILURE 6.3 wasm