SlackKit – Build Information – Swift Package Index

Build Information

Failed to build SlackKit, reference main (8b1596), with Swift 6.4 for macOS (SPM) on 18 Sep 2026 20:30:54 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun swift build --arch arm64

Build Log

========================================
RunAll
========================================
Builder version: 5.1.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/pvzig/SlackKit.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/pvzig/SlackKit
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 8b1596e Update README.md
Cloned https://github.com/pvzig/SlackKit.git
Revision (git rev-parse @):
8b1596e12e8b28638af592922ed5e8ef61dbcd38
SUCCESS checkout https://github.com/pvzig/SlackKit.git at main
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/pvzig/SlackKit.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun swift build --arch arm64
Building for debugging...
[Computing dependencies]
[Constructing description]
[Pre-planning 1 / 1515]
[Planning 1505 / 1515]
[Planning deferred tasks]
[Constructing 959 / 3621]
[106 / 960] SKClient-product
[276 / 960] swift-nio_NIOPosix
[284 / 960]
[302 / 968] Atomics
[306 / 987] CNIOWASI
[315 / 991] CNIOBoringSSL
[320 / 1025]
[324 / 1051]
[329 / 1051] _NIOBase64
[343 / 1113]
[349 / 1113] InternalCollectionsUtilities
[358 / 1113] CNIOBoringSSL
[360 / 1113]
[362 / 1113]
[375 / 1113]
[382 / 1113]
[388 / 1113] CNIOBoringSSL
[389 / 1113]
[393 / 1113] CNIOBoringSSL
[396 / 1113] NIOConcurrencyHelpers
[398 / 1113] CNIOBoringSSL
[410 / 1113] CNIOBoringSSL
[426 / 1113] CNIOBoringSSL
[429 / 1113]
[432 / 1113] CNIOBoringSSL
[438 / 1113] CNIOBoringSSL
[450 / 1113] CNIOBoringSSL
[454 / 1113] CNIOBoringSSL
[456 / 1113]
[457 / 1113] CNIOBoringSSL
[462 / 1113] CNIOBoringSSL
[466 / 1113] CNIOBoringSSL
[468 / 1113]
[477 / 1113] CNIOBoringSSL
[479 / 1113] CNIOBoringSSL
[483 / 1113] CNIOBoringSSL
[488 / 1113] CNIOBoringSSL
[489 / 1113] CNIOBoringSSL
[491 / 1113] CNIOBoringSSL
[493 / 1113] SKCore
[496 / 1113] CNIOBoringSSL
[502 / 1113] CNIOBoringSSL
[505 / 1113] Swifter
[519 / 1113] CNIOBoringSSL
[529 / 1113] CNIOBoringSSL
[531 / 1113] CNIOBoringSSL
[534 / 1113] CNIOBoringSSL
[537 / 1113] CNIOBoringSSL
[539 / 1113] CNIOBoringSSL
[542 / 1113] CNIOBoringSSL
[544 / 1113] CNIOBoringSSL
[550 / 1113] CNIOBoringSSL
[559 / 1113] CNIOBoringSSL
[570 / 1113] CNIOBoringSSL
[582 / 1113] CNIOBoringSSL
[585 / 1113] CNIOBoringSSL
[586 / 1113] CNIOBoringSSL
[592 / 1113] CNIOBoringSSL
[596 / 1113] CNIOBoringSSL
[603 / 1113] CNIOBoringSSL
[606 / 1113] CNIOBoringSSL
[609 / 1113] CNIOBoringSSL
[614 / 1113] CNIOBoringSSL
[617 / 1113] CNIOBoringSSL
[620 / 1113] CNIOBoringSSL
[623 / 1113] CNIOBoringSSL
[627 / 1113] CNIOBoringSSL
[629 / 1113] CNIOBoringSSL
[636 / 1113] CNIOBoringSSL
[648 / 1113] CNIOBoringSSL
[653 / 1113] CNIOBoringSSL
[659 / 1113] CNIOBoringSSL
[663 / 1113] CNIOBoringSSL
[667 / 1113] CNIOBoringSSL
[678 / 1113] CNIOBoringSSL
[687 / 1113] CNIOBoringSSL
[690 / 1113] CNIOBoringSSL
[697 / 1113] CNIOBoringSSL
[700 / 1113] CNIOBoringSSL
[704 / 1113] CNIOBoringSSL
[708 / 1113] CNIOBoringSSL
[710 / 1113] CNIOBoringSSL
[712 / 1113] CNIOBoringSSL
[718 / 1113] CNIOBoringSSL
[720 / 1113] CNIOBoringSSL
[725 / 1113] CNIOBoringSSL
[728 / 1113] CNIOBoringSSL
[733 / 1113] CNIOBoringSSL
[734 / 1113] CNIOBoringSSL
[740 / 1113] CNIOBoringSSL
[743 / 1113] CNIOBoringSSL
[755 / 1113] CNIOBoringSSL
[766 / 1113] CNIOBoringSSL
[774 / 1113] CNIOBoringSSL
[775 / 1113] CNIOBoringSSL
[779 / 1113] CNIOBoringSSL
[783 / 1113] CNIOBoringSSL
[787 / 1113] CNIOBoringSSL
[795 / 1113] CNIOBoringSSL
[809 / 1113] CNIOBoringSSL
[814 / 1113] CNIOBoringSSL
[815 / 1113] CNIOBoringSSL
[817 / 1113] CNIOBoringSSL
[824 / 1113] CNIOBoringSSL
[833 / 1113]
[844 / 1113] Swifter
[847 / 1113]
[852 / 1113] _AtomicsShims
[856 / 1113] Swifter
[861 / 1113] Swifter
[864 / 1113] _NIOBase64
[867 / 1113] Starscream
[877 / 1113] Swifter
[878 / 1113] Starscream-product
[883 / 1113] Starscream
[887 / 1113] SKCore
[891 / 1113] NIOConcurrencyHelpers
[893 / 1113] NIOConcurrencyHelpers-product
[901 / 1113] InternalCollectionsUtilities
[904 / 1113] ContainersPreview
[922 / 1123] Atomics
[932 / 1125] CNIOAtomics
[943 / 1141] InternalCollectionsUtilities
[952 / 1141]
[956 / 1141] _NIOBase64
[966 / 1143] SKClient
[971 / 1144] CNIOLLHTTP
[975 / 1155] ContainersPreview
[981 / 1155] ContainersPreview
[997 / 1161] DequeModule
[1007 / 1162]
[1016 / 1163] DequeModule
[1022 / 1174] DequeModule
[1025 / 1174] SKClient
[1027 / 1185] SKServer
[1035 / 1185] SKServer
[1040 / 1185] SKServer
[1045 / 1185] SKServer
[1050 / 1185] SKServer
[1050 / 1185] DequeModule
[1053 / 1185] DequeModule
[1062 / 1186] NIOCore
[1065 / 1203]
[1067 / 1203]
[1077 / 1203] NIOCore
[1079 / 1203] NIOCore
[1079 / 1203] CNIOAtomics
[1081 / 1203] NIOCore
[1092 / 1206] NIOEmbedded
[1096 / 1210] NIOFoundationEssentialsCompat
[1103 / 1226] NIOPosix
[1114 / 1242]
[1117 / 1242]
[1117 / 1242] NIOEmbedded
[1120 / 1242]
[1121 / 1242]
[1122 / 1242]
[1133 / 1242] NIOPosix
[1134 / 1242] NIOFoundationEssentialsCompat
[1136 / 1242] NIOFoundationEssentialsCompat
[1142 / 1242] NIOFoundationEssentialsCompat
[1142 / 1242] NIOPosix
[1142 / 1242] NIOFoundationEssentialsCompat
[1144 / 1242] NIOPosix
[1151 / 1243] NIO
[1160 / 1245] NIO
[1163 / 1248] NIOPosix
[1163 / 1248] NIOTLS
[1170 / 1266]
[1179 / 1270] NIOTLS
[1184 / 1270] NIOTLS
[1190 / 1270] NIOFoundationCompat
[1203 / 1270] NIOHTTP1
[1207 / 1273]
[1208 / 1274]
[1209 / 1274] NIOWebSocket
[1217 / 1297] NIOWebSocket
[1221 / 1325]
[1232 / 1325] NIOWebSocket
[1245 / 1325] NIOTransportServices
[1248 / 1325] NIOTransportServices
[1251 / 1325] NIOWebSocket
[1261 / 1325] NIOTransportServices-product
[1265 / 1325] NIOSSL
[1267 / 1325] NIOSSL
[1277 / 1325] NIOTransportServices
[1280 / 1325] NIOExtras
[1282 / 1325] NIOPosix
[1288 / 1325] NIOExtras
[1292 / 1326] NIOHTTP1
[1298 / 1326] NIOSSL
[1298 / 1326] WebSocketKit
[1314 / 1342] WebSocketKit
[1316 / 1342] WebSocketKit
[1323 / 1343] WebSocketKit
[1325 / 1343] SKRTMAPI
Fetching https://github.com/vapor/websocket-kit
Fetching https://github.com/daltoniam/Starscream
Fetching https://github.com/httpswift/swifter
[1/2670] Fetching websocket-kit
[2/7867] Fetching websocket-kit, starscream
[80/13917] Fetching websocket-kit, starscream, swifter
Fetched https://github.com/daltoniam/Starscream (1.95s)
Fetched https://github.com/httpswift/swifter (1.95s)
Fetched https://github.com/vapor/websocket-kit (1.95s)
Computing version for https://github.com/httpswift/swifter
Computed https://github.com/httpswift/swifter at 1.5.0 (2.62s)
Computing version for https://github.com/daltoniam/Starscream
Computed https://github.com/daltoniam/Starscream at 4.0.8 (0.62s)
Computing version for https://github.com/vapor/websocket-kit
Computed https://github.com/vapor/websocket-kit at 2.16.2 (0.56s)
Fetching https://github.com/apple/swift-nio-extras.git
Fetching https://github.com/apple/swift-nio.git
Fetching https://github.com/apple/swift-atomics.git
Fetching https://github.com/apple/swift-nio-ssl.git
Fetching https://github.com/apple/swift-nio-transport-services.git
[1/1875] Fetching swift-atomics
[20/4738] Fetching swift-atomics, swift-nio-transport-services
[115/11428] Fetching swift-atomics, swift-nio-transport-services, swift-nio-extras
[296/27493] Fetching swift-atomics, swift-nio-transport-services, swift-nio-extras, swift-nio-ssl
[13197/113566] Fetching swift-atomics, swift-nio-transport-services, swift-nio-extras, swift-nio-ssl, swift-nio
Fetched https://github.com/apple/swift-nio-extras.git (7.43s)
Fetched https://github.com/apple/swift-nio.git (7.43s)
Fetched https://github.com/apple/swift-atomics.git (7.43s)
Fetched https://github.com/apple/swift-nio-transport-services.git (7.43s)
Fetched https://github.com/apple/swift-nio-ssl.git (7.43s)
Computing version for https://github.com/apple/swift-atomics.git
Computed https://github.com/apple/swift-atomics.git at 1.3.1 (8.05s)
Computing version for https://github.com/apple/swift-nio-transport-services.git
Computed https://github.com/apple/swift-nio-transport-services.git at 1.28.0 (0.60s)
Computing version for https://github.com/apple/swift-nio-ssl.git
Computed https://github.com/apple/swift-nio-ssl.git at 2.37.5 (0.62s)
Computing version for https://github.com/apple/swift-nio.git
Computed https://github.com/apple/swift-nio.git at 2.103.0 (0.68s)
Fetching https://github.com/apple/swift-system.git
Fetching https://github.com/apple/swift-collections.git
[1/6898] Fetching swift-system
[2554/34218] Fetching swift-system, swift-collections
Fetched https://github.com/apple/swift-collections.git (3.22s)
Fetched https://github.com/apple/swift-system.git (3.22s)
Computing version for https://github.com/apple/swift-collections.git
Computed https://github.com/apple/swift-collections.git at 1.6.0 (3.93s)
Computing version for https://github.com/apple/swift-system.git
Computed https://github.com/apple/swift-system.git at 1.8.1 (0.59s)
Computing version for https://github.com/apple/swift-nio-extras.git
Computed https://github.com/apple/swift-nio-extras.git at 1.35.1 (2.26s)
Fetching https://github.com/apple/swift-http-types.git
Fetching https://github.com/apple/swift-http-structured-headers.git
Fetching https://github.com/apple/swift-asn1.git
Fetching https://github.com/swift-server/swift-service-lifecycle.git
Fetching https://github.com/apple/swift-async-algorithms.git
Fetching https://github.com/apple/swift-log.git
Fetching https://github.com/apple/swift-algorithms.git
[1/1935] Fetching swift-http-types
[2/3918] Fetching swift-http-types, swift-asn1
[138/12014] Fetching swift-http-types, swift-asn1, swift-log
[139/14857] Fetching swift-http-types, swift-asn1, swift-log, swift-service-lifecycle
[200/21002] Fetching swift-http-types, swift-asn1, swift-log, swift-service-lifecycle, swift-algorithms
[201/27725] Fetching swift-http-types, swift-asn1, swift-log, swift-service-lifecycle, swift-algorithms, swift-async-algorithms
Fetched https://github.com/apple/swift-http-types.git (1.07s)
[2757/25790] Fetching swift-asn1, swift-log, swift-service-lifecycle, swift-algorithms, swift-async-algorithms
Fetching https://github.com/apple/swift-certificates.git
[14587/27043] Fetching swift-asn1, swift-log, swift-service-lifecycle, swift-algorithms, swift-async-algorithms, swift-http-structured-headers
Fetched https://github.com/apple/swift-log.git (1.43s)
Fetched https://github.com/apple/swift-async-algorithms.git (1.43s)
Fetched https://github.com/apple/swift-http-structured-headers.git (1.43s)
Fetched https://github.com/apple/swift-algorithms.git (1.45s)
Fetched https://github.com/apple/swift-asn1.git (1.45s)
Fetched https://github.com/swift-server/swift-service-lifecycle.git (1.45s)
Fetching https://github.com/apple/swift-nio-http2.git
[1/7566] Fetching swift-certificates
[5298/19818] Fetching swift-certificates, swift-nio-http2
Fetched https://github.com/apple/swift-certificates.git (1.35s)
[246/12252] Fetching swift-nio-http2
Fetched https://github.com/apple/swift-nio-http2.git (1.90s)
Computing version for https://github.com/apple/swift-algorithms.git
Computed https://github.com/apple/swift-algorithms.git at 1.2.1 (4.06s)
Fetching https://github.com/apple/swift-numerics.git
[1/6636] Fetching swift-numerics
Fetched https://github.com/apple/swift-numerics.git (1.81s)
Computing version for https://github.com/apple/swift-numerics.git
Computed https://github.com/apple/swift-numerics.git at 1.1.1 (2.40s)
Computing version for https://github.com/swift-server/swift-service-lifecycle.git
Computed https://github.com/swift-server/swift-service-lifecycle.git at 2.12.0 (0.56s)
Computing version for https://github.com/apple/swift-log.git
Computed https://github.com/apple/swift-log.git at 1.15.1 (0.60s)
Computing version for https://github.com/apple/swift-async-algorithms.git
Computed https://github.com/apple/swift-async-algorithms.git at 1.1.5 (0.65s)
Computing version for https://github.com/apple/swift-http-structured-headers.git
Computed https://github.com/apple/swift-http-structured-headers.git at 1.7.0 (0.65s)
Computing version for https://github.com/apple/swift-http-types.git
Computed https://github.com/apple/swift-http-types.git at 1.8.0 (0.64s)
Computing version for https://github.com/apple/swift-asn1.git
Computed https://github.com/apple/swift-asn1.git at 1.7.3 (0.73s)
Computing version for https://github.com/apple/swift-certificates.git
Computed https://github.com/apple/swift-certificates.git at 1.20.0 (0.72s)
Fetching https://github.com/apple/swift-crypto.git
[1/18542] Fetching swift-crypto
Fetched https://github.com/apple/swift-crypto.git (3.12s)
Computing version for https://github.com/apple/swift-crypto.git
Computed https://github.com/apple/swift-crypto.git at 4.5.2 (3.89s)
Computing version for https://github.com/apple/swift-nio-http2.git
Computed https://github.com/apple/swift-nio-http2.git at 1.46.0 (0.62s)
Creating working copy for https://github.com/vapor/websocket-kit
Working copy of https://github.com/vapor/websocket-kit resolved at 2.16.2
Creating working copy for https://github.com/apple/swift-numerics.git
Working copy of https://github.com/apple/swift-numerics.git resolved at 1.1.1
Creating working copy for https://github.com/apple/swift-http-structured-headers.git
Working copy of https://github.com/apple/swift-http-structured-headers.git resolved at 1.7.0
Creating working copy for https://github.com/apple/swift-async-algorithms.git
Working copy of https://github.com/apple/swift-async-algorithms.git resolved at 1.1.5
Creating working copy for https://github.com/apple/swift-nio-extras.git
Working copy of https://github.com/apple/swift-nio-extras.git resolved at 1.35.1
Creating working copy for https://github.com/apple/swift-atomics.git
Working copy of https://github.com/apple/swift-atomics.git resolved at 1.3.1
Creating working copy for https://github.com/httpswift/swifter
Working copy of https://github.com/httpswift/swifter resolved at 1.5.0
Creating working copy for https://github.com/apple/swift-nio.git
Working copy of https://github.com/apple/swift-nio.git resolved at 2.103.0
Creating working copy for https://github.com/apple/swift-nio-transport-services.git
Working copy of https://github.com/apple/swift-nio-transport-services.git resolved at 1.28.0
Creating working copy for https://github.com/apple/swift-asn1.git
Working copy of https://github.com/apple/swift-asn1.git resolved at 1.7.3
Creating working copy for https://github.com/apple/swift-log.git
Working copy of https://github.com/apple/swift-log.git resolved at 1.15.1
Creating working copy for https://github.com/swift-server/swift-service-lifecycle.git
Working copy of https://github.com/swift-server/swift-service-lifecycle.git resolved at 2.12.0
Creating working copy for https://github.com/apple/swift-system.git
Working copy of https://github.com/apple/swift-system.git resolved at 1.8.1
Creating working copy for https://github.com/apple/swift-crypto.git
Working copy of https://github.com/apple/swift-crypto.git resolved at 4.5.2
Creating working copy for https://github.com/apple/swift-nio-http2.git
Working copy of https://github.com/apple/swift-nio-http2.git resolved at 1.46.0
Creating working copy for https://github.com/daltoniam/Starscream
Working copy of https://github.com/daltoniam/Starscream resolved at 4.0.8
Creating working copy for https://github.com/apple/swift-certificates.git
Working copy of https://github.com/apple/swift-certificates.git resolved at 1.20.0
Creating working copy for https://github.com/apple/swift-algorithms.git
Working copy of https://github.com/apple/swift-algorithms.git resolved at 1.2.1
Creating working copy for https://github.com/apple/swift-collections.git
Working copy of https://github.com/apple/swift-collections.git resolved at 1.6.0
Creating working copy for https://github.com/apple/swift-nio-ssl.git
Working copy of https://github.com/apple/swift-nio-ssl.git resolved at 2.37.5
Creating working copy for https://github.com/apple/swift-http-types.git
Working copy of https://github.com/apple/swift-http-types.git resolved at 1.8.0
error: SwiftCompile normal arm64 failed with a nonzero exit code. Command line:     cd /Users/admin/builder

/Users/admin/builder/spi-builder-workspace/SKRTMAPI/Sources/Conformers/StarscreamRTM.swift:31:14: [1;31merror: [1;39mtype 'StarscreamRTM' does not conform to protocol 'WebSocketDelegate'[0;0m
[0;36m29 |[0;0m import Starscream
[0;36m30 |[0;0m
[0;36m31 |[0;0m public class StarscreamRTM: RTMWebSocket, WebSocketDelegate {
   [0;36m|[0;0m              |- [1;31merror: [1;39mtype 'StarscreamRTM' does not conform to protocol 'WebSocketDelegate'[0;0m
   [0;36m|[0;0m              `- [1;39mnote: [1;39madd stubs for conformance[0;0m
[0;36m32 |[0;0m     public weak var delegate: RTMDelegate?
[0;36m33 |[0;0m     private var webSocket: WebSocket?
   [0;36m:[0;0m
[0;36m59 |[0;0m     // MARK: - WebSocketDelegate
[0;36m60 |[0;0m
[0;36m61 |[0;0m     public func didReceive(event: WebSocketEvent, client: WebSocket) {
   [0;36m|[0;0m                 `- [1;39mnote: [1;39mcandidate has non-matching type '(WebSocketEvent, WebSocket) -> ()'[0;0m
[0;36m62 |[0;0m         switch event {
[0;36m63 |[0;0m         case .connected:
Starscream.WebSocketDelegate.didReceive:2:6: [1;39mnote: [1;39mprotocol requires function 'didReceive(event:client:)' with type '(WebSocketEvent, any WebSocketClient) -> ()'[0;0m
[0;36m1 |[0;0m protocol WebSocketDelegate {
[0;36m2 |[0;0m func didReceive(event: Starscream.WebSocketEvent, client: any Starscream.WebSocketClient)}
  [0;36m|[0;0m      `- [1;39mnote: [1;39mprotocol requires function 'didReceive(event:client:)' with type '(WebSocketEvent, any WebSocketClient) -> ()'[0;0m
[0;36m3 |[0;0m
Failed frontend command:
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend -frontend -emit-module -experimental-skip-non-inlinable-function-bodies-without-types /Users/admin/builder/spi-builder-workspace/SKRTMAPI/Sources/Conformers/StarscreamRTM.swift /Users/admin/builder/spi-builder-workspace/SKRTMAPI/Sources/Conformers/VaporEngineRTM.swift /Users/admin/builder/spi-builder-workspace/SKRTMAPI/Sources/SKRTMAPI.swift -target arm64-apple-macos12.0 -disable-cross-import-overlay-search -swift-module-cross-import Darwin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/Darwin.swiftcrossimport/xlocale.swiftoverlay -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins/libFoundationMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server\#FoundationMacros -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins/libObservationMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server\#ObservationMacros -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins/libSwiftMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server\#SwiftMacros -disable-implicit-swift-modules -Xcc 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error: Build failed
BUILD FAILURE 6.4 macosSpm