Swift Package IndexBuild Information
Failed to build Bow, reference master (a8c1a7), with Swift 6.3 for Wasm on 10 Apr 2026 14:53:21 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/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/bow-swift/bow.git
Reference: master
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/bow-swift/bow
* branch master -> FETCH_HEAD
* [new branch] master -> origin/master
HEAD is now at a8c1a71 Update README.md (#662)
Cloned https://github.com/bow-swift/bow.git
Revision (git rev-parse @):
a8c1a719cd8407dfae6ffeb6de1110177c4a7819
SUCCESS checkout https://github.com/bow-swift/bow.git at master
========================================
Build
========================================
Selected platform: wasm
Swift version: 6.3
Building package at path: $PWD
https://github.com/bow-swift/bow.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-3":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/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/ReactiveX/RxSwift.git
Fetching https://github.com/bow-swift/SwiftCheck.git
[1/4531] Fetching swiftcheck
[4532/58836] Fetching swiftcheck, rxswift
Fetched https://github.com/bow-swift/SwiftCheck.git from cache (8.05s)
Fetched https://github.com/ReactiveX/RxSwift.git from cache (8.23s)
Computing version for https://github.com/bow-swift/SwiftCheck.git
Computed https://github.com/bow-swift/SwiftCheck.git at 0.12.1 (8.96s)
Computing version for https://github.com/ReactiveX/RxSwift.git
Computed https://github.com/ReactiveX/RxSwift.git at 5.1.3 (0.48s)
Creating working copy for https://github.com/ReactiveX/RxSwift.git
Working copy of https://github.com/ReactiveX/RxSwift.git resolved at 5.1.3
Creating working copy for https://github.com/bow-swift/SwiftCheck.git
Working copy of https://github.com/bow-swift/SwiftCheck.git resolved at 0.12.1
Building for debugging...
[0/19] Write sources
[18/19] Write swift-version-24593BA9C3E375BF.txt
[20/263] Emitting module Bow
/host/spi-builder-workspace/Sources/Bow/Typeclasses/MonadComprehensions/MonadComprenhensions.swift:43:2: warning: '@_functionBuilder' has been renamed to '@resultBuilder'
41 | }
42 |
43 | @_functionBuilder
| `- warning: '@_functionBuilder' has been renamed to '@resultBuilder'
44 | public struct BindingsBuilder {
45 | public static func buildBlock<F>(_ instructions: BindingExpression<F>...) -> [BindingExpression<F>] {
/host/spi-builder-workspace/Sources/Bow/Arrow/CokleisliK.swift:58:28: warning: generic parameter 'F' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
4 | /// that is polymorphic on A, where F and B are fixed.
5 | /// Subclasses of `CokleisliK` need to implement `invoke`.
6 | open class CokleisliK<F, B> {
| `- note: 'F' previously declared here
7 | /// Initializer
8 | public init() {}
:
56 | }
57 |
58 | private class Composed<F, T, B>: CokleisliK<F, B> {
| `- warning: generic parameter 'F' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
59 | private let f: CokleisliK<F, T>
60 | private let g: Function1<T, B>
/host/spi-builder-workspace/Sources/Bow/Arrow/CokleisliK.swift:58:34: warning: generic parameter 'B' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
4 | /// that is polymorphic on A, where F and B are fixed.
5 | /// Subclasses of `CokleisliK` need to implement `invoke`.
6 | open class CokleisliK<F, B> {
| `- note: 'B' previously declared here
7 | /// Initializer
8 | public init() {}
:
56 | }
57 |
58 | private class Composed<F, T, B>: CokleisliK<F, B> {
| `- warning: generic parameter 'B' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
59 | private let f: CokleisliK<F, T>
60 | private let g: Function1<T, B>
/host/spi-builder-workspace/Sources/Bow/Data/Co.swift:111:24: warning: generic parameter 'A' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
33 | /// - A MonadWriter from a ComonadTraced
34 | /// - A MonadState from a ComonadStore
35 | public class CoT<W: Comonad, M, A>: CoTOf<W, M, A> {
| `- note: 'A' previously declared here
36 | internal let cow: (Kind<W, (A) -> Kind<M, Any>>) -> Kind<M, Any>
37 |
:
109 | /// - wa: Comonadic space to explore.
110 | /// - Returns: A new Comonadic space resulting from the exploration.
111 | static func select<A, B>(
| `- warning: generic parameter 'A' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
112 | _ co: Co<W, (A) -> B>,
113 | _ wa: Kind<W, A>) -> Kind<W, B> {
/host/spi-builder-workspace/Sources/Bow/Data/Coyoneda.swift:90:25: warning: generic parameter 'F' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
47 | ///
48 | /// Coyoneda can be viewed as the arguments that we need for the `map` function.
49 | public final class Coyoneda<F, A>: CoyonedaOf<F, A> {
| `- note: 'F' previously declared here
50 | internal let coyonedaF: Exists<CoyonedaFPartial<F, A>>
51 |
:
88 | }
89 |
90 | private class Lower<F: Functor, A>: CokleisliK<CoyonedaFPartial<F, A>, Kind<F, A>> {
| `- warning: generic parameter 'F' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
91 | public override func invoke<T>(_ fa: CoyonedaFOf<F, A, T>) -> Kind<F, A> {
92 | fa^.pivot.map(fa^.f.invoke)
/host/spi-builder-workspace/Sources/Bow/Data/Coyoneda.swift:90:37: warning: generic parameter 'A' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
47 | ///
48 | /// Coyoneda can be viewed as the arguments that we need for the `map` function.
49 | public final class Coyoneda<F, A>: CoyonedaOf<F, A> {
| `- note: 'A' previously declared here
50 | internal let coyonedaF: Exists<CoyonedaFPartial<F, A>>
51 |
:
88 | }
89 |
90 | private class Lower<F: Functor, A>: CokleisliK<CoyonedaFPartial<F, A>, Kind<F, A>> {
| `- warning: generic parameter 'A' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
91 | public override func invoke<T>(_ fa: CoyonedaFOf<F, A, T>) -> Kind<F, A> {
92 | fa^.pivot.map(fa^.f.invoke)
/host/spi-builder-workspace/Sources/Bow/Data/Coyoneda.swift:115:23: warning: generic parameter 'F' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
39 |
40 | /// Partial application of the Coyoneda type constructor, omitting the last parameter.
41 | public final class CoyonedaPartial<F>: Kind<ForCoyoneda, F> {}
| `- note: 'F' previously declared here
42 |
43 | /// Higher Kinded Type alias to improve readability.
:
113 | }
114 |
115 | private class Map<F, A, B>: CokleisliK<CoyonedaFPartial<F, A>, CoyonedaOf<F, B>> {
| `- warning: generic parameter 'F' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
116 | internal init(f: @escaping (A) -> B) {
117 | self.f = f
/host/spi-builder-workspace/Sources/Bow/Data/Coyoneda.swift:159:27: warning: generic parameter 'F' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
39 |
40 | /// Partial application of the Coyoneda type constructor, omitting the last parameter.
41 | public final class CoyonedaPartial<F>: Kind<ForCoyoneda, F> {}
| `- note: 'F' previously declared here
42 |
43 | /// Higher Kinded Type alias to improve readability.
:
157 | }
158 |
159 | private class FlatMap<F: Monad, A, B>: CokleisliK<CoyonedaFPartial<F, A>, CoyonedaOf<F, B>> {
| `- warning: generic parameter 'F' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
160 | internal init(f: @escaping (A) -> CoyonedaOf<F, B>) {
161 | self.f = f
/host/spi-builder-workspace/Sources/Bow/Data/Coyoneda.swift:196:29: warning: generic parameter 'F' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
39 |
40 | /// Partial application of the Coyoneda type constructor, omitting the last parameter.
41 | public final class CoyonedaPartial<F>: Kind<ForCoyoneda, F> {}
| `- note: 'F' previously declared here
42 |
43 | /// Higher Kinded Type alias to improve readability.
:
194 | }
195 |
196 | private class CoflatMap<F: Comonad, A, B>: CokleisliK<CoyonedaFPartial<F, A>, CoyonedaOf<F, B>> {
| `- warning: generic parameter 'F' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
197 | internal init(f: @escaping (CoyonedaOf<F, A>) -> B) {
198 | self.f = f
/host/spi-builder-workspace/Sources/Bow/Data/Coyoneda.swift:216:27: warning: generic parameter 'F' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
39 |
40 | /// Partial application of the Coyoneda type constructor, omitting the last parameter.
41 | public final class CoyonedaPartial<F>: Kind<ForCoyoneda, F> {}
| `- note: 'F' previously declared here
42 |
43 | /// Higher Kinded Type alias to improve readability.
:
214 | }
215 |
216 | private class Extract<F: Comonad, A>: CokleisliK<CoyonedaFPartial<F, A>, A> {
| `- warning: generic parameter 'F' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
217 | internal override init() {}
218 |
/host/spi-builder-workspace/Sources/Bow/Data/Coyoneda.swift:236:28: warning: generic parameter 'F' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
39 |
40 | /// Partial application of the Coyoneda type constructor, omitting the last parameter.
41 | public final class CoyonedaPartial<F>: Kind<ForCoyoneda, F> {}
| `- note: 'F' previously declared here
42 |
43 | /// Higher Kinded Type alias to improve readability.
:
234 | }
235 |
236 | private class FoldLeft<F: Foldable, A, B>: CokleisliK<CoyonedaFPartial<F, A>, B> {
| `- warning: generic parameter 'F' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
237 | internal init(b: B, f: @escaping (B, A) -> B) {
238 | self.b = b
/host/spi-builder-workspace/Sources/Bow/Data/Coyoneda.swift:260:29: warning: generic parameter 'F' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
39 |
40 | /// Partial application of the Coyoneda type constructor, omitting the last parameter.
41 | public final class CoyonedaPartial<F>: Kind<ForCoyoneda, F> {}
| `- note: 'F' previously declared here
42 |
43 | /// Higher Kinded Type alias to improve readability.
:
258 | }
259 |
260 | private class FoldRight<F: Foldable, A, B>: CokleisliK<CoyonedaFPartial<F, A>, Eval<B>> {
| `- warning: generic parameter 'F' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
261 | internal init(b: Eval<B>, f: @escaping (A, Eval<B>) -> Eval<B>) {
262 | self.b = b
/host/spi-builder-workspace/Sources/Bow/Data/Coyoneda.swift:287:29: warning: generic parameter 'F' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
39 |
40 | /// Partial application of the Coyoneda type constructor, omitting the last parameter.
41 | public final class CoyonedaPartial<F>: Kind<ForCoyoneda, F> {}
| `- note: 'F' previously declared here
42 |
43 | /// Higher Kinded Type alias to improve readability.
:
285 | }
286 |
287 | private class TraverseF<F: Traverse, G: Applicative, A, B>: CokleisliK<CoyonedaFPartial<F, A>, Kind<G, CoyonedaOf<F, B>>> {
| `- warning: generic parameter 'F' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
288 | internal init(f: @escaping (A) -> Kind<G, B>) {
289 | self.f = f
/host/spi-builder-workspace/Sources/Bow/Typeclasses/Functor.swift:123:22: warning: generic parameter 'A' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
121 | /// - Parameter f: Function to be lifted.
122 | /// - Returns: Function in the context implementing this instance of `Functor`.
123 | static func lift<A, B>(_ f: @escaping (A) -> B) -> (Kind<F, A>) -> Kind<F, B> {
| `- warning: generic parameter 'A' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
124 | { fa in fa.map(f) }
125 | }
/host/spi-builder-workspace/Sources/Bow/Syntax/HigherKinds.swift:10:20: note: 'A' previously declared here
8 | /// class ForOption {}
9 | /// class Option<A>: Kind<ForOption, A> {}
10 | open class Kind<F, A> {
| `- note: 'A' previously declared here
11 | /// Default initializer
12 | public init() {}
/host/spi-builder-workspace/Sources/Bow/Typeclasses/Selective.swift:187:14: warning: generic parameter 'A' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
185 | /// - else: Computation that will be executed if this evaluates to `false`.
186 | /// - Returns: Composition of the computations.
187 | func ifS<A>(then t: Kind<F, A>, else e: Kind<F, A>) -> Kind<F, A> {
| `- warning: generic parameter 'A' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
188 | F.ifS(self, then: t, else: e)
189 | }
/host/spi-builder-workspace/Sources/Bow/Syntax/HigherKinds.swift:10:20: note: 'A' previously declared here
8 | /// class ForOption {}
9 | /// class Option<A>: Kind<ForOption, A> {}
10 | open class Kind<F, A> {
| `- note: 'A' previously declared here
11 | /// Default initializer
12 | public init() {}
[21/276] Compiling RxSwift BehaviorSubject.swift
/host/spi-builder-workspace/.build/checkouts/SwiftCheck/Sources/SwiftCheck/Arbitrary.swift:376:9: error: no such module 'Darwin'
374 | import Glibc
375 | #else
376 | import Darwin
| `- error: no such module 'Darwin'
377 | #endif
378 |
[22/276] Compiling RxSwift BinaryDisposable.swift
/host/spi-builder-workspace/.build/checkouts/SwiftCheck/Sources/SwiftCheck/Arbitrary.swift:376:9: error: no such module 'Darwin'
374 | import Glibc
375 | #else
376 | import Darwin
| `- error: no such module 'Darwin'
377 | #endif
378 |
[23/277] Compiling RxSwift AsSingle.swift
/host/spi-builder-workspace/.build/checkouts/SwiftCheck/Sources/SwiftCheck/Arbitrary.swift:376:9: error: no such module 'Darwin'
374 | import Glibc
375 | #else
376 | import Darwin
| `- error: no such module 'Darwin'
377 | #endif
378 |
[24/277] Compiling RxSwift AsyncLock.swift
/host/spi-builder-workspace/.build/checkouts/SwiftCheck/Sources/SwiftCheck/Arbitrary.swift:376:9: error: no such module 'Darwin'
374 | import Glibc
375 | #else
376 | import Darwin
| `- error: no such module 'Darwin'
377 | #endif
378 |
[25/277] Compiling RxSwift AnyObserver.swift
/host/spi-builder-workspace/.build/checkouts/SwiftCheck/Sources/SwiftCheck/Arbitrary.swift:376:9: error: no such module 'Darwin'
374 | import Glibc
375 | #else
376 | import Darwin
| `- error: no such module 'Darwin'
377 | #endif
378 |
[26/277] Compiling RxSwift AsMaybe.swift
/host/spi-builder-workspace/.build/checkouts/SwiftCheck/Sources/SwiftCheck/Arbitrary.swift:376:9: error: no such module 'Darwin'
374 | import Glibc
375 | #else
376 | import Darwin
| `- error: no such module 'Darwin'
377 | #endif
378 |
[27/277] Compiling RxSwift AsyncSubject.swift
/host/spi-builder-workspace/.build/checkouts/SwiftCheck/Sources/SwiftCheck/Arbitrary.swift:376:9: error: no such module 'Darwin'
374 | import Glibc
375 | #else
376 | import Darwin
| `- error: no such module 'Darwin'
377 | #endif
378 |
[28/277] Compiling RxSwift AtomicInt.swift
/host/spi-builder-workspace/.build/checkouts/SwiftCheck/Sources/SwiftCheck/Arbitrary.swift:376:9: error: no such module 'Darwin'
374 | import Glibc
375 | #else
376 | import Darwin
| `- error: no such module 'Darwin'
377 | #endif
378 |
[29/277] Compiling RxSwift Bag+Rx.swift
/host/spi-builder-workspace/.build/checkouts/SwiftCheck/Sources/SwiftCheck/Arbitrary.swift:376:9: error: no such module 'Darwin'
374 | import Glibc
375 | #else
376 | import Darwin
| `- error: no such module 'Darwin'
377 | #endif
378 |
[30/277] Compiling RxSwift Bag.swift
/host/spi-builder-workspace/.build/checkouts/SwiftCheck/Sources/SwiftCheck/Arbitrary.swift:376:9: error: no such module 'Darwin'
374 | import Glibc
375 | #else
376 | import Darwin
| `- error: no such module 'Darwin'
377 | #endif
378 |
[31/277] Compiling SwiftCheck WitnessedArbitrary.swift
/host/spi-builder-workspace/.build/checkouts/SwiftCheck/Sources/SwiftCheck/Arbitrary.swift:376:9: error: no such module 'Darwin'
374 | import Glibc
375 | #else
376 | import Darwin
| `- error: no such module 'Darwin'
377 | #endif
378 |
[32/277] Compiling RxSwift AddRef.swift
/host/spi-builder-workspace/.build/checkouts/SwiftCheck/Sources/SwiftCheck/Arbitrary.swift:376:9: error: no such module 'Darwin'
374 | import Glibc
375 | #else
376 | import Darwin
| `- error: no such module 'Darwin'
377 | #endif
378 |
[33/277] Compiling RxSwift Amb.swift
/host/spi-builder-workspace/.build/checkouts/SwiftCheck/Sources/SwiftCheck/Arbitrary.swift:376:9: error: no such module 'Darwin'
374 | import Glibc
375 | #else
376 | import Darwin
| `- error: no such module 'Darwin'
377 | #endif
378 |
error: emit-module command failed with exit code 1 (use -v to see invocation)
[34/277] Emitting module SwiftCheck
/host/spi-builder-workspace/.build/checkouts/SwiftCheck/Sources/SwiftCheck/Arbitrary.swift:376:9: error: no such module 'Darwin'
374 | import Glibc
375 | #else
376 | import Darwin
| `- error: no such module 'Darwin'
377 | #endif
378 |
[35/277] Compiling RxSwift AnonymousDisposable.swift
/host/spi-builder-workspace/.build/checkouts/SwiftCheck/Sources/SwiftCheck/Arbitrary.swift:376:9: error: no such module 'Darwin'
374 | import Glibc
375 | #else
376 | import Darwin
| `- error: no such module 'Darwin'
377 | #endif
378 |
[36/277] Compiling RxSwift AnonymousObserver.swift
/host/spi-builder-workspace/.build/checkouts/SwiftCheck/Sources/SwiftCheck/Arbitrary.swift:376:9: error: no such module 'Darwin'
374 | import Glibc
375 | #else
376 | import Darwin
| `- error: no such module 'Darwin'
377 | #endif
378 |
BUILD FAILURE 6.3 wasm