Swift Package Index

Build Information

Failed to build arc, reference v0.0.1-alpha (26d3da), with Swift 6.2 for Wasm on 10 Feb 2026 07:50:25 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/finestructure/spi-images:wasm-6.2-latest swift build --swift-sdk wasm32-unknown-wasip1 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.68.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/mac9sb/swift-reverse-proxy.git
Reference: v0.0.1-alpha
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/mac9sb/swift-reverse-proxy
 * tag               v0.0.1-alpha -> FETCH_HEAD
HEAD is now at 26d3da6 Disambiguate Extensions initialization
Cloned https://github.com/mac9sb/swift-reverse-proxy.git
Revision (git rev-parse @):
26d3da65c7719bc6c18ad55534371926c2635704
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/mac9sb/swift-reverse-proxy.git at v0.0.1-alpha
========================================
Build
========================================
Selected platform:         wasm
Swift version:             6.2
Building package at path:  $PWD
https://github.com/mac9sb/swift-reverse-proxy.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-2":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/finestructure/spi-images:wasm-6.2-latest swift build --swift-sdk wasm32-unknown-wasip1 2>&1
wasm-6.2-latest: Pulling from finestructure/spi-images
Digest: sha256:c50555b47c4db0b0576f9f25702fbe2fdff28194c4a4f4c23a7dce4b3504c85e
Status: Image is up to date for registry.gitlab.com/finestructure/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/embedded-swift-sdk.json
Fetching https://github.com/swiftlang/swift-testing
Fetching https://github.com/tuist/Noora.git
Fetching https://github.com/apple/swift-nio.git
Fetching https://github.com/apple/swift-log.git
Fetching https://github.com/apple/swift-argument-parser.git
Fetching https://github.com/swiftlang/swift-docc-plugin
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Fetched https://github.com/apple/swift-log.git from cache (0.72s)
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Fetched https://github.com/apple/swift-nio.git from cache (8.39s)
Fetched https://github.com/tuist/Noora.git from cache (8.42s)
Computing version for https://github.com/swiftlang/swift-testing
Computed https://github.com/swiftlang/swift-testing at 0.99.0 (8.93s)
Fetching https://github.com/swiftlang/swift-syntax.git
[1/74115] Fetching swift-syntax
Fetched https://github.com/swiftlang/swift-syntax.git from cache (5.91s)
Computing version for https://github.com/swiftlang/swift-syntax.git
Computed https://github.com/swiftlang/swift-syntax.git at 600.0.1 (8.51s)
Computing version for https://github.com/swiftlang/swift-docc-plugin
Computed https://github.com/swiftlang/swift-docc-plugin at 1.4.6 (0.51s)
Fetching https://github.com/swiftlang/swift-docc-symbolkit
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Computing version for https://github.com/swiftlang/swift-docc-symbolkit
Computed https://github.com/swiftlang/swift-docc-symbolkit at 1.0.0 (1.05s)
Computing version for https://github.com/apple/swift-argument-parser.git
Computed https://github.com/apple/swift-argument-parser.git at 1.7.0 (0.48s)
Computing version for https://github.com/apple/swift-nio.git
Computed https://github.com/apple/swift-nio.git at 2.94.0 (0.78s)
Fetching https://github.com/apple/swift-system.git
Fetching https://github.com/apple/swift-atomics.git
Fetching https://github.com/apple/swift-collections.git
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Fetched https://github.com/apple/swift-system.git from cache (1.40s)
Fetched https://github.com/apple/swift-atomics.git from cache (1.40s)
Fetched https://github.com/apple/swift-collections.git from cache (1.44s)
Computing version for https://github.com/apple/swift-atomics.git
Computed https://github.com/apple/swift-atomics.git at 1.3.0 (1.79s)
Computing version for https://github.com/apple/swift-system.git
Computed https://github.com/apple/swift-system.git at 1.6.4 (0.44s)
Computing version for https://github.com/apple/swift-collections.git
Computed https://github.com/apple/swift-collections.git at 1.3.0 (0.60s)
Computing version for https://github.com/apple/swift-log.git
Computed https://github.com/apple/swift-log.git at 1.9.1 (0.40s)
Computing version for https://github.com/tuist/Noora.git
Computed https://github.com/tuist/Noora.git at 0.54.2 (2.35s)
Fetching https://github.com/onevcat/Rainbow
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Fetched https://github.com/tuist/path from cache (0.23s)
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Computing version for https://github.com/tuist/path
Computed https://github.com/tuist/path at 0.3.8 (0.72s)
Computing version for https://github.com/onevcat/Rainbow
Computed https://github.com/onevcat/Rainbow at 4.2.1 (3.39s)
Creating working copy for https://github.com/swiftlang/swift-testing
Working copy of https://github.com/swiftlang/swift-testing resolved at 0.99.0
Creating working copy for https://github.com/swiftlang/swift-docc-plugin
Working copy of https://github.com/swiftlang/swift-docc-plugin resolved at 1.4.6
Creating working copy for https://github.com/swiftlang/swift-syntax.git
Working copy of https://github.com/swiftlang/swift-syntax.git resolved at 600.0.1
Creating working copy for https://github.com/apple/swift-collections.git
Working copy of https://github.com/apple/swift-collections.git resolved at 1.3.0
Creating working copy for https://github.com/tuist/path
Working copy of https://github.com/tuist/path resolved at 0.3.8
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/apple/swift-nio.git
Working copy of https://github.com/apple/swift-nio.git resolved at 2.94.0
Creating working copy for https://github.com/apple/swift-argument-parser.git
Working copy of https://github.com/apple/swift-argument-parser.git resolved at 1.7.0
Creating working copy for https://github.com/tuist/Noora.git
Working copy of https://github.com/tuist/Noora.git resolved at 0.54.2
Creating working copy for https://github.com/apple/swift-atomics.git
Working copy of https://github.com/apple/swift-atomics.git resolved at 1.3.0
Creating working copy for https://github.com/onevcat/Rainbow
Working copy of https://github.com/onevcat/Rainbow resolved at 4.2.1
Creating working copy for https://github.com/apple/swift-system.git
Working copy of https://github.com/apple/swift-system.git resolved at 1.6.4
Creating working copy for https://github.com/apple/swift-log.git
Working copy of https://github.com/apple/swift-log.git resolved at 1.9.1
Downloading package prebuilt https://download.swift.org/prebuilts/swift-syntax/600.0.1/swift-6.2-RELEASE-MacroSupport-ubuntu_jammy_x86_64.tar.gz
Downloaded https://download.swift.org/prebuilts/swift-syntax/600.0.1/swift-6.2-RELEASE-MacroSupport-ubuntu_jammy_x86_64.tar.gz (0.47s)
[1/1] Compiling plugin Swift-DocC Preview
[2/2] Compiling plugin Swift-DocC
[3/3] Compiling plugin GenerateManual
[4/4] Compiling plugin GenerateDoccReference
Building for debugging...
[4/81] Write sources
[4/81] Copying example-site-Package.swift.template
[4/81] Copying example-site-Home.swift.template
[4/81] Write sources
[4/81] Copying example-site-Application.swift.template
[4/81] Copying example-api-WebController.swift.template
[4/81] Copying example-api-main.swift.template
[4/81] Copying example-api-Package.swift.template
[4/81] Copying example-api-HTMLResponse.swift.template
[4/81] Copying example-api-ExamplePage.swift.template
[4/81] Copying example-api-APIController.swift.template
[4/81] Write sources
[4/81] Copying Arc.swift.template
[4/81] Copying README.md.template
[4/81] Write sources
[4/81] Copying example-api-Application.swift.template
[4/81] Write sources
[31/81] Compiling CNIOWindows shim.c
[32/81] Compiling CNIOWindows WSAStartup.c
[33/81] Compiling _AtomicsShims.c
[34/81] Compiling CNIOWASI CNIOWASI.c
[35/81] Compiling CNIOPosix event_loop_id.c
[36/81] Compiling CNIOLinux liburing_shims.c
[36/81] Compiling CNIOLinux shim.c
[38/81] Compiling CNIOOpenBSD shim.c
[39/81] Write sources
[46/81] Compiling CNIODarwin shim.c
[47/81] Compiling CNIOLLHTTP c_nio_http.c
[48/81] Write swift-version-24593BA9C3E375BF.txt
[49/81] Compiling CNIOLLHTTP c_nio_api.c
error: emit-module command failed with exit code 1 (use -v to see invocation)
[51/91] Emitting module _NIODataStructures
/host/spi-builder-workspace/.build/checkouts/swift-nio/Sources/_NIODataStructures/Heap.swift:27:8: error: The Heap module was unable to identify your C library.
 25 | @preconcurrency import Bionic
 26 | #else
 27 | #error("The Heap module was unable to identify your C library.")
    |        `- error: The Heap module was unable to identify your C library.
 28 | #endif
 29 |
/host/spi-builder-workspace/.build/checkouts/swift-nio/Sources/_NIODataStructures/Heap.swift:170:47: error: 'init(describing:)' is unavailable: unavailable in embedded Swift
168 |             return "<empty heap>"
169 |         }
170 |         let descriptions = self.storage.map { String(describing: $0) }
    |                                               `- error: 'init(describing:)' is unavailable: unavailable in embedded Swift
171 |         let maxLen: Int = descriptions.map { $0.count }.max()!  // storage checked non-empty above
172 |         let paddedDescs = descriptions.map { (desc: String) -> String in
Swift.String.init:2:8: note: 'init(describing:)' has been explicitly marked unavailable here
1 | struct String {
2 | public init<Subject>(describing instance: Subject)}
  |        `- note: 'init(describing:)' has been explicitly marked unavailable here
3 |
/host/spi-builder-workspace/.build/checkouts/swift-nio/Sources/_NIODataStructures/Heap.swift:208:21: error: cannot find 'log2' in scope
206 |
207 |             func height(index: Int) -> Int {
208 |                 Int(log2(Double(index + 1)))
    |                     `- error: cannot find 'log2' in scope
209 |             }
210 |             let myHeight = height(index: index)
error: emit-module command failed with exit code 1 (use -v to see invocation)
[52/91] Emitting module Rainbow
/host/spi-builder-workspace/.build/checkouts/Rainbow/Sources/ColorApproximation.swift:9:8: error: no such module 'Foundation'
 7 | //
 8 |
 9 | import Foundation
   |        `- error: no such module 'Foundation'
10 |
11 | public enum HexColorTarget {
error: emit-module command failed with exit code 1 (use -v to see invocation)
[53/91] Emitting module _NIOBase64
/host/spi-builder-workspace/.build/checkouts/swift-nio/Sources/_NIOBase64/Base64.swift:112:39: error: cannot use a value of protocol type 'any Error' in embedded Swift
 27 |     @inlinable
 28 |     public func base64Decoded() throws -> [UInt8] {
 29 |         try self._base64Decoded()
    |                  `- note: called from here
 30 |     }
 31 |
    :
 38 |     @inlinable
 39 |     public func _base64Decoded() throws -> [UInt8] {
 40 |         try Base64.decode(string: self)
    |                    `- note: called from here
 41 |     }
 42 | }
    :
110 |             if bytes[i + 2] != Base64.encodePaddingCharacter {
111 |                 guard let byte2Index = Base64.encodingTable.firstIndex(of: bytes[i + 2]) else {
112 |                     throw Base64Error.invalidCharacter
    |                                       `- error: cannot use a value of protocol type 'any Error' in embedded Swift
113 |                 }
114 |
[54/91] Compiling _NIODataStructures Heap.swift
/host/spi-builder-workspace/.build/checkouts/swift-nio/Sources/_NIODataStructures/Heap.swift:27:8: error: The Heap module was unable to identify your C library.
 25 | @preconcurrency import Bionic
 26 | #else
 27 | #error("The Heap module was unable to identify your C library.")
    |        `- error: The Heap module was unable to identify your C library.
 28 | #endif
 29 |
/host/spi-builder-workspace/.build/checkouts/swift-nio/Sources/_NIODataStructures/Heap.swift:170:47: error: 'init(describing:)' is unavailable: unavailable in embedded Swift
168 |             return "<empty heap>"
169 |         }
170 |         let descriptions = self.storage.map { String(describing: $0) }
    |                                               `- error: 'init(describing:)' is unavailable: unavailable in embedded Swift
171 |         let maxLen: Int = descriptions.map { $0.count }.max()!  // storage checked non-empty above
172 |         let paddedDescs = descriptions.map { (desc: String) -> String in
Swift.String.init:2:8: note: 'init(describing:)' has been explicitly marked unavailable here
1 | struct String {
2 | public init<Subject>(describing instance: Subject)}
  |        `- note: 'init(describing:)' has been explicitly marked unavailable here
3 |
/host/spi-builder-workspace/.build/checkouts/swift-nio/Sources/_NIODataStructures/Heap.swift:208:21: error: cannot find 'log2' in scope
206 |
207 |             func height(index: Int) -> Int {
208 |                 Int(log2(Double(index + 1)))
    |                     `- error: cannot find 'log2' in scope
209 |             }
210 |             let myHeight = height(index: index)
[54/91] Compiling c-nioatomics.c
[54/91] Compiling c-atomics.c
[54/91] Compiling CNIOLLHTTP c_nio_llhttp.c
BUILD FAILURE 6.2 wasm