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Build Information

Failed to build swift-nio-imap, reference 0.2.0 (0a471f), with Swift 6.2 for Wasm on 20 Jan 2026 07:44:06 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4606859-3":/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/apple/swift-nio-imap.git
Reference: 0.2.0
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/apple/swift-nio-imap
 * tag               0.2.0      -> FETCH_HEAD
HEAD is now at 0a471f5 Add support for RFC9698 JMAPACCESS (#807)
Cloned https://github.com/apple/swift-nio-imap.git
Revision (git rev-parse @):
0a471f59b2632d04a5f4274e3b94db0d2fc7c839
SUCCESS checkout https://github.com/apple/swift-nio-imap.git at 0.2.0
========================================
Build
========================================
Selected platform:         wasm
Swift version:             6.2
Building package at path:  $PWD
https://github.com/apple/swift-nio-imap.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-3":/host -w "$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:e45aebddbd3fb4404abe9276e0d450e6fc2ef4836b534e79623bcca11b80d266
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/apple/swift-log
Fetching https://github.com/apple/swift-collections.git
Fetching https://github.com/apple/swift-nio-ssl
Fetching https://github.com/apple/swift-nio
[1/5811] Fetching swift-log
[5812/21107] Fetching swift-log, swift-nio-ssl
[5813/39778] Fetching swift-log, swift-nio-ssl, swift-collections
[7936/121158] Fetching swift-log, swift-nio-ssl, swift-collections, swift-nio
Fetching https://github.com/apple/swift-se0270-range-set.git
Fetched https://github.com/apple/swift-log from cache (0.54s)
[2805/115347] Fetching swift-nio-ssl, swift-collections, swift-nio
[12173/115423] Fetching swift-nio-ssl, swift-collections, swift-nio, swift-se0270-range-set
Fetched https://github.com/apple/swift-se0270-range-set.git from cache (0.34s)
[14785/115347] Fetching swift-nio-ssl, swift-collections, swift-nio
Fetched https://github.com/apple/swift-nio-ssl from cache (11.75s)
Fetched https://github.com/apple/swift-collections.git from cache (11.75s)
Fetched https://github.com/apple/swift-nio from cache (11.84s)
Computing version for https://github.com/apple/swift-se0270-range-set.git
Computed https://github.com/apple/swift-se0270-range-set.git at 1.0.1 (16.30s)
Computing version for https://github.com/apple/swift-collections.git
Computed https://github.com/apple/swift-collections.git at 1.3.0 (1.61s)
Computing version for https://github.com/apple/swift-log
Computed https://github.com/apple/swift-log at 1.9.1 (0.38s)
Computing version for https://github.com/apple/swift-nio-ssl
Computed https://github.com/apple/swift-nio-ssl at 2.36.0 (0.42s)
Computing version for https://github.com/apple/swift-nio
Computed https://github.com/apple/swift-nio at 2.92.2 (0.87s)
Fetching https://github.com/apple/swift-atomics.git
Fetching https://github.com/apple/swift-system.git
[1/1820] Fetching swift-atomics
[1275/7238] Fetching swift-atomics, swift-system
Fetched https://github.com/apple/swift-atomics.git from cache (0.47s)
Fetched https://github.com/apple/swift-system.git from cache (0.47s)
Computing version for https://github.com/apple/swift-atomics.git
Computed https://github.com/apple/swift-atomics.git at 1.3.0 (0.86s)
Computing version for https://github.com/apple/swift-system.git
Computed https://github.com/apple/swift-system.git at 1.6.4 (0.62s)
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/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/apple/swift-log
Working copy of https://github.com/apple/swift-log resolved at 1.9.1
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-se0270-range-set.git
Working copy of https://github.com/apple/swift-se0270-range-set.git resolved at 1.0.1
Creating working copy for https://github.com/apple/swift-nio-ssl
Working copy of https://github.com/apple/swift-nio-ssl resolved at 2.36.0
Creating working copy for https://github.com/apple/swift-nio
Working copy of https://github.com/apple/swift-nio resolved at 2.92.2
Building for debugging...
[0/464] Compiling co-586-apple.S
[0/464] Write sources
[3/464] Compiling bsaes-armv7-linux.S
[3/464] Write sources
[21/464] Compiling bn-armv8-linux.S
[22/464] Compiling bn-armv8-win.S
[23/464] Compiling co-586-linux.S
[24/464] Compiling CNIOWindows shim.c
[24/464] Compiling CNIOWindows WSAStartup.c
[26/464] Compiling _AtomicsShims.c
[27/464] Compiling CNIOWASI CNIOWASI.c
[28/464] Compiling CNIOPosix event_loop_id.c
[29/464] Compiling CNIOOpenBSD shim.c
[29/464] Compiling CNIOLinux liburing_shims.c
[31/464] Compiling CNIOLinux shim.c
[32/464] Compiling CNIODarwin shim.c
[33/464] Compiling fiat_p256_adx_sqr.S
[34/464] Compiling fiat_curve25519_adx_mul.S
[35/464] Compiling fiat_curve25519_adx_square.S
[36/464] Compiling fiat_p256_adx_mul.S
[37/464] Write swift-version-24593BA9C3E375BF.txt
[38/464] Compiling a_bitstr.cc
[39/464] Compiling CNIOBoringSSLShims shims.c
error: emit-module command failed with exit code 1 (use -v to see invocation)
[41/468] 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)
[42/468] 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 |
[43/468] 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)
[43/468] Compiling tls_method.cc
[43/468] Compiling tls13_client.cc
[43/468] Compiling tls_record.cc
[43/468] Compiling c-nioatomics.c
[43/468] Compiling tls13_server.cc
[43/468] Compiling tls13_enc.cc
BUILD FAILURE 6.2 wasm