Swift Package IndexBuild Information
Failed to build MQTTKit, reference master (ec8946), with Swift 6.3 for Wasm on 10 Apr 2026 22:44:30 UTC.
Build Command
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/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
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RunAll
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Builder version: 4.70.0
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/arnecs/mqttkit.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/arnecs/mqttkit
* branch master -> FETCH_HEAD
* [new branch] master -> origin/master
HEAD is now at ec89464 travis script xcodebuild
Cloned https://github.com/arnecs/mqttkit.git
Revision (git rev-parse @):
ec894640f1ea27f758b3f4d22722d83159773cd0
SUCCESS checkout https://github.com/arnecs/mqttkit.git at master
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Build
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Selected platform: wasm
Swift version: 6.3
Building package at path: $PWD
https://github.com/arnecs/mqttkit.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$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
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-24593BA9C3E375BF.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[3/10] Compiling MQTTKit Extensions.swift
[4/10] Compiling MQTTKit Constants.swift
/host/spi-builder-workspace/Sources/Constants.swift:45:5: warning: 'public' modifier is redundant for operator function declared in a public extension
43 |
44 | public extension MQTTQoSLevel {
45 | public static func < (lhs: MQTTQoSLevel, rhs: MQTTQoSLevel) -> Bool {
| `- warning: 'public' modifier is redundant for operator function declared in a public extension
46 | return lhs.rawValue < rhs.rawValue
47 | }
[5/10] Emitting module MQTTKit
/host/spi-builder-workspace/Sources/Constants.swift:45:5: warning: 'public' modifier is redundant for operator function declared in a public extension
43 |
44 | public extension MQTTQoSLevel {
45 | public static func < (lhs: MQTTQoSLevel, rhs: MQTTQoSLevel) -> Bool {
| `- warning: 'public' modifier is redundant for operator function declared in a public extension
46 | return lhs.rawValue < rhs.rawValue
47 | }
/host/spi-builder-workspace/Sources/MQTTOptions.swift:32:23: error: cannot find type 'DispatchQoS' in scope
30 | var autoReconnectTimeout: Double = 60
31 | var bufferSize: Int = 4096
32 | var readQosClass: DispatchQoS.QoSClass = .background
| `- error: cannot find type 'DispatchQoS' in scope
33 |
34 | init(host: String, port: Int? = nil) {
/host/spi-builder-workspace/Sources/MQTTSession.swift:16:30: error: cannot find 'DispatchQueue' in scope
14 | private var outputStream: OutputStream?
15 | private lazy var lastServerResponse: Date = Date()
16 | private var writeQueue = DispatchQueue(label: "mqtt_write")
| `- error: cannot find 'DispatchQueue' in scope
17 | private var messageId: UInt16 = 0
18 | private var pendingPackets: [UInt16: MQTTPacket] = [:]
[6/10] Compiling MQTTKit MQTTSessionDelegate.swift
[7/10] Compiling MQTTKit MQTTMessage.swift
[8/10] Compiling MQTTKit MQTTPacket.swift
/host/spi-builder-workspace/Sources/MQTTPacket.swift:63:14: warning: function call causes an infinite recursion
61 |
62 | init(header: MQTTPacket.Header) {
63 | self.init(header: header)
| `- warning: function call causes an infinite recursion
64 | }
65 | }
[9/10] Compiling MQTTKit MQTTOptions.swift
/host/spi-builder-workspace/Sources/MQTTOptions.swift:32:23: error: cannot find type 'DispatchQoS' in scope
30 | var autoReconnectTimeout: Double = 60
31 | var bufferSize: Int = 4096
32 | var readQosClass: DispatchQoS.QoSClass = .background
| `- error: cannot find type 'DispatchQoS' in scope
33 |
34 | init(host: String, port: Int? = nil) {
[10/10] Compiling MQTTKit MQTTSession.swift
/host/spi-builder-workspace/Sources/MQTTSession.swift:16:30: error: cannot find 'DispatchQueue' in scope
14 | private var outputStream: OutputStream?
15 | private lazy var lastServerResponse: Date = Date()
16 | private var writeQueue = DispatchQueue(label: "mqtt_write")
| `- error: cannot find 'DispatchQueue' in scope
17 | private var messageId: UInt16 = 0
18 | private var pendingPackets: [UInt16: MQTTPacket] = [:]
/host/spi-builder-workspace/Sources/MQTTSession.swift:136:9: error: cannot find 'DispatchQueue' in scope
134 | }
135 |
136 | DispatchQueue.main.async {
| `- error: cannot find 'DispatchQueue' in scope
137 | self.keepAliveTimer = Timer.scheduledTimer(withTimeInterval: TimeInterval(self.options.keepAliveInterval / 2), repeats: true, block: { [weak self] timer in
138 | guard self?.outputStream?.streamStatus == .open,
/host/spi-builder-workspace/Sources/MQTTSession.swift:158:9: error: cannot find 'DispatchQueue' in scope
156 | }
157 |
158 | DispatchQueue.main.async {
| `- error: cannot find 'DispatchQueue' in scope
159 | self.autoReconnectTimer = Timer.scheduledTimer(withTimeInterval: TimeInterval(self.options.keepAliveInterval / 2), repeats: true, block: { [lsr = self.lastServerResponse, timeout = self.options.autoReconnectTimeout] timer in
160 | guard -lsr.timeIntervalSinceNow < timeout && self.state == .disconnected else {
/host/spi-builder-workspace/Sources/MQTTSession.swift:174:16: error: type 'Stream' has no member 'getStreamsToHost'
172 | var outputStream: OutputStream?
173 |
174 | Stream.getStreamsToHost(
| `- error: type 'Stream' has no member 'getStreamsToHost'
175 | withName: options.host,
176 | port: options.port,
/host/spi-builder-workspace/Sources/MQTTSession.swift:188:51: error: cannot find 'RunLoopMode' in scope
186 | output.delegate = self
187 |
188 | input.schedule(in: RunLoop.main, forMode: RunLoopMode.defaultRunLoopMode)
| `- error: cannot find 'RunLoopMode' in scope
189 | output.schedule(in: RunLoop.main, forMode: RunLoopMode.defaultRunLoopMode)
190 |
/host/spi-builder-workspace/Sources/MQTTSession.swift:189:52: error: cannot find 'RunLoopMode' in scope
187 |
188 | input.schedule(in: RunLoop.main, forMode: RunLoopMode.defaultRunLoopMode)
189 | output.schedule(in: RunLoop.main, forMode: RunLoopMode.defaultRunLoopMode)
| `- error: cannot find 'RunLoopMode' in scope
190 |
191 | if options.useTLS {
/host/spi-builder-workspace/Sources/MQTTSession.swift:192:57: error: argument type 'StreamSocketSecurityLevel' expected to be an instance of a class or class-constrained type
190 |
191 | if options.useTLS {
192 | input.setProperty(StreamSocketSecurityLevel.tlSv1, forKey: .socketSecurityLevelKey)
| `- error: argument type 'StreamSocketSecurityLevel' expected to be an instance of a class or class-constrained type
193 | output.setProperty(StreamSocketSecurityLevel.tlSv1, forKey: .socketSecurityLevelKey)
194 | }
/host/spi-builder-workspace/Sources/MQTTSession.swift:193:58: error: argument type 'StreamSocketSecurityLevel' expected to be an instance of a class or class-constrained type
191 | if options.useTLS {
192 | input.setProperty(StreamSocketSecurityLevel.tlSv1, forKey: .socketSecurityLevelKey)
193 | output.setProperty(StreamSocketSecurityLevel.tlSv1, forKey: .socketSecurityLevelKey)
| `- error: argument type 'StreamSocketSecurityLevel' expected to be an instance of a class or class-constrained type
194 | }
195 |
/host/spi-builder-workspace/Sources/MQTTSession.swift:196:9: error: cannot find 'DispatchQueue' in scope
194 | }
195 |
196 | DispatchQueue.global(qos: .userInitiated).async {
| `- error: cannot find 'DispatchQueue' in scope
197 | input.open()
198 | output.open()
/host/spi-builder-workspace/Sources/MQTTSession.swift:196:36: error: cannot infer contextual base in reference to member 'userInitiated'
194 | }
195 |
196 | DispatchQueue.global(qos: .userInitiated).async {
| `- error: cannot infer contextual base in reference to member 'userInitiated'
197 | input.open()
198 | output.open()
BUILD FAILURE 6.3 wasm