Readium – Build Information – Swift Package Index

Build Information

Failed to build Readium, reference 4.0.0-alpha.2 (e23361), with Swift 6.4 for Wasm on 28 Sep 2026 08:38:53 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-53886770-0":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/saguaro1/spi-images:wasm-6.4-latest swift build --swift-sdk swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 5.1.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/readium/swift-toolkit.git
Reference: 4.0.0-alpha.2
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/readium/swift-toolkit
 * tag               4.0.0-alpha.2 -> FETCH_HEAD
HEAD is now at e23361a 4.0.0-alpha.2 (#902)
Cloned https://github.com/readium/swift-toolkit.git
Revision (git rev-parse @):
e23361a748afa66d0095b75897e834de47b249cc
SUCCESS checkout https://github.com/readium/swift-toolkit.git at 4.0.0-alpha.2
========================================
Build
========================================
Selected platform:         wasm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/readium/swift-toolkit.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-53886770-0":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/saguaro1/spi-images:wasm-6.4-latest swift build --swift-sdk swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm 2>&1
wasm-6.4-latest: Pulling from saguaro1/spi-images
Digest: sha256:4328fdb43c680d205c1d6761b1e3267aa38277eefdda9ddfb17b6a0f1a77857a
Status: Image is up to date for registry.gitlab.com/saguaro1/spi-images:wasm-6.4-latest
Fetching https://github.com/apple/swift-docc-plugin
Fetching https://github.com/marmelroy/Zip.git
Fetching https://github.com/readium/Fuzi.git
Fetching https://github.com/scinfu/SwiftSoup.git
Fetching https://github.com/readium/ZIPFoundation.git
[1/2000] Fetching zip
[461/2845] Fetching zip, fuzi
[1726/8793] Fetching zip, fuzi, zipfoundation
[1967/11138] Fetching zip, fuzi, zipfoundation, swift-docc-plugin
Fetched https://github.com/readium/Fuzi.git (0.61s)
Fetched https://github.com/apple/swift-docc-plugin (0.62s)
Fetched https://github.com/marmelroy/Zip.git (0.62s)
[1725/5948] Fetching zipfoundation
[5949/12927] Fetching zipfoundation, swiftsoup
Fetched https://github.com/readium/ZIPFoundation.git (0.73s)
[1257/6979] Fetching swiftsoup
Fetched https://github.com/scinfu/SwiftSoup.git (0.88s)
Computing version for https://github.com/apple/swift-docc-plugin
Computed https://github.com/apple/swift-docc-plugin at 1.5.0 (1.98s)
Fetching https://github.com/swiftlang/swift-docc-symbolkit
[1/3831] Fetching swift-docc-symbolkit
Fetched https://github.com/swiftlang/swift-docc-symbolkit (0.59s)
Computing version for https://github.com/readium/ZIPFoundation.git
warning: 'zipfoundation': /Package.swift:24:58: warning: 'v4' is deprecated: watchOS 9.0 is the oldest supported version [#DeprecatedDeclaration]
22 |     name: "ReadiumZIPFoundation",
23 |     platforms: [
24 |         .macOS(.v11), .iOS(.v13), .tvOS(.v12), .watchOS(.v4), .visionOS(.v1)
   |                                                          `- warning: 'v4' is deprecated: watchOS 9.0 is the oldest supported version [#DeprecatedDeclaration]
25 |     ],
26 |     products: [
[#DeprecatedDeclaration]: <https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration>
Computed https://github.com/readium/ZIPFoundation.git at 3.0.1 (0.78s)
Computing version for https://github.com/marmelroy/Zip.git
Computed https://github.com/marmelroy/Zip.git at 2.1.2 (0.19s)
Computing version for https://github.com/swiftlang/swift-docc-symbolkit
Computed https://github.com/swiftlang/swift-docc-symbolkit at 1.0.0 (0.32s)
Computing version for https://github.com/readium/Fuzi.git
Computed https://github.com/readium/Fuzi.git at 4.0.1 (0.33s)
Computing version for https://github.com/scinfu/SwiftSoup.git
Computed https://github.com/scinfu/SwiftSoup.git at 2.13.9 (0.30s)
Creating working copy for https://github.com/readium/Fuzi.git
Working copy of https://github.com/readium/Fuzi.git resolved at 4.0.1
Creating working copy for https://github.com/scinfu/SwiftSoup.git
Working copy of https://github.com/scinfu/SwiftSoup.git resolved at 2.13.9
Creating working copy for https://github.com/apple/swift-docc-plugin
Working copy of https://github.com/apple/swift-docc-plugin resolved at 1.5.0
Creating working copy for https://github.com/readium/ZIPFoundation.git
Working copy of https://github.com/readium/ZIPFoundation.git resolved at 3.0.1
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
Creating working copy for https://github.com/marmelroy/Zip.git
Working copy of https://github.com/marmelroy/Zip.git resolved at 2.1.2
warning: 'zipfoundation': /host/spi-builder-workspace/.build/checkouts/ZIPFoundation/Package.swift:24:58: warning: 'v4' is deprecated: watchOS 9.0 is the oldest supported version [#DeprecatedDeclaration]
22 |     name: "ReadiumZIPFoundation",
23 |     platforms: [
24 |         .macOS(.v11), .iOS(.v13), .tvOS(.v12), .watchOS(.v4), .visionOS(.v1)
   |                                                          `- warning: 'v4' is deprecated: watchOS 9.0 is the oldest supported version [#DeprecatedDeclaration]
25 |     ],
26 |     products: [
[#DeprecatedDeclaration]: <https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration>
Building for debugging...
[Computing dependencies]
[Constructing description]
[Pre-planning 1 / 710]
[Planning deferred tasks]
[Writing build description]
[84 / 198] ReadiumFuzi
[107 / 208] Zip
[110 / 218] ReadiumZIPFoundation
error: SwiftCompile normal wasm32 failed with a nonzero exit code. Command line:     cd /host

<module-includes>:1:10: [1;39mnote: [1;39min file included from <module-includes>:1:[0;0m
[0;36m1 |[0;0m #include "/host/spi-builder-workspace/.build/checkouts/Zip/Zip/minizip/include/Minizip.h"
  [0;36m|[0;0m          `- [1;39mnote: [1;39min file included from <module-includes>:1:[0;0m
[0;36m2 |[0;0m
/host/spi-builder-workspace/.build/checkouts/Zip/Zip/minizip/include/Minizip.h:13:9: [1;39mnote: [1;39min file included from /host/spi-builder-workspace/.build/checkouts/Zip/Zip/minizip/include/Minizip.h:13:[0;0m
[0;36m11 |[0;0m
[0;36m12 |[0;0m #import "crypt.h"
[0;36m13 |[0;0m #import "unzip.h"
   [0;36m|[0;0m         `- [1;39mnote: [1;39min file included from /host/spi-builder-workspace/.build/checkouts/Zip/Zip/minizip/include/Minizip.h:13:[0;0m
[0;36m14 |[0;0m #import "zip.h"
[0;36m15 |[0;0m
/host/spi-builder-workspace/.build/checkouts/Zip/Zip/minizip/include/unzip.h:25:10: [1;31merror: [1;39m'zlib.h' file not found[0;0m
 [0;36m23 |[0;0m
 [0;36m24 |[0;0m #ifndef _ZLIB_H
 [0;36m25 |[0;0m #include <zlib.h>
    [0;36m|[0;0m          `- [1;31merror: [1;39m'zlib.h' file not found[0;0m
 [0;36m26 |[0;0m #endif
 [0;36m27 |[0;0m
/host/spi-builder-workspace/.build/checkouts/Zip/Zip/Zip.swift:10:29: [1;31merror: [1;39mcould not build C module 'Minizip'[0;0m
  [0;36m8 |[0;0m
  [0;36m9 |[0;0m import Foundation
 [0;36m10 |[0;0m @_implementationOnly import Minizip
    [0;36m|[0;0m                             `- [1;31merror: [1;39mcould not build C module 'Minizip'[0;0m
 [0;36m11 |[0;0m
 [0;36m12 |[0;0m /// Zip error type
Failed frontend command:
/usr/bin/swift-frontend -frontend -emit-module -experimental-skip-non-inlinable-function-bodies-without-types /host/spi-builder-workspace/.build/checkouts/Zip/Zip/QuickZip.swift /host/spi-builder-workspace/.build/checkouts/Zip/Zip/Zip.swift /host/spi-builder-workspace/.build/checkouts/Zip/Zip/ZipUtilities.swift -target wasm32-unknown-wasip1 -disable-objc-interop -sdk /root/.swiftpm/swift-sdks/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm.artifactbundle/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm/wasm32-unknown-wasip1/WASI.sdk -sysroot /root/.swiftpm/swift-sdks/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm.artifactbundle/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm/wasm32-unknown-wasip1/WASI.sdk -I /host/spi-builder-workspace/.build/out/Products/Debug-webassembly-wasm32 -module-cache-path /host/spi-builder-workspace/.build/out/ModuleCache.noindex -color-diagnostics -Xcc -fcolor-diagnostics -enable-testing -g -debug-info-format\=dwarf -dwarf-version\=4 -suppress-warnings -swift-version 5 -Onone -D SWIFT_PACKAGE -D DEBUG -D SWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -D Xcode -serialize-debugging-options -enable-experimental-feature DebugDescriptionMacro -empty-abi-descriptor -external-plugin-path /usr/lib/swift/host/plugins/testing\#/usr/bin/swift-plugin-server -validate-clang-modules-once -clang-build-session-file /host/spi-builder-workspace/.build/out/ModuleCache.noindex/Session.modulevalidation -Xcc -working-directory -Xcc /host -resource-dir /root/.swiftpm/swift-sdks/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm.artifactbundle/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm/wasm32-unknown-wasip1/swift.xctoolchain/usr/lib/swift_static -use-static-resource-dir -enable-anonymous-context-mangled-names -file-compilation-dir /host -Xcc -resource-dir -Xcc /root/.swiftpm/swift-sdks/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm.artifactbundle/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm/wasm32-unknown-wasip1/swift.xctoolchain/usr/lib/swift_static/clang -Xcc -fmodule-map-file\=/host/spi-builder-workspace/.build/out/Intermediates.noindex/GeneratedModuleMaps-webassembly-wasm32/Minizip.modulemap -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -Xcc -fmodules-prune-interval\=86400 -Xcc -fmodules-prune-after\=345600 -Xcc -I/host/spi-builder-workspace/.build/checkouts/Zip/Zip/minizip/include -Xcc -I/host/spi-builder-workspace/.build/out/Products/Debug-webassembly-wasm32/include -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Zip.build/Debug-webassembly-wasm32/Zip-t.build/DerivedSources-normal/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Zip.build/Debug-webassembly-wasm32/Zip-t.build/DerivedSources/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Zip.build/Debug-webassembly-wasm32/Zip-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name Zip -const-gather-protocols-file /host/spi-builder-workspace/.build/out/Intermediates.noindex/Zip.build/Debug-webassembly-wasm32/Zip-t.build/Objects-normal/wasm32/Zip_const_extract_protocols.json -in-process-plugin-server-path /usr/lib/swift/host/libSwiftInProcPluginServer.so -plugin-path /usr/lib/swift/host/plugins -plugin-path /usr/local/lib/swift/host/plugins -emit-module-doc-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Zip.build/Debug-webassembly-wasm32/Zip-t.build/Objects-normal/wasm32/Modules/Zip.swiftdoc -emit-module-source-info-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Zip.build/Debug-webassembly-wasm32/Zip-t.build/Objects-normal/wasm32/Modules/Zip.swiftsourceinfo -emit-objc-header-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Zip.build/Debug-webassembly-wasm32/Zip-t.build/Objects-normal/wasm32/Zip-Swift.h -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Zip.build/Debug-webassembly-wasm32/Zip-t.build/Objects-normal/wasm32/Zip-primary-emit-module.dia -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Zip.build/Debug-webassembly-wasm32/Zip-t.build/Objects-normal/wasm32/Zip-primary-emit-module.d -parse-as-library -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/Zip.build/Debug-webassembly-wasm32/Zip-t.build/Objects-normal/wasm32/Modules/Zip.swiftmodule
[113 / 227] TestPublications
error: Build failed
BUILD FAILURE 6.4 wasm