Swift Package IndexBuild Information
Failed to build mcp-template, reference main (fc2642), with Swift 6.0 for macOS (SPM) on 27 Apr 2026 12:39:56 UTC.
Build Command
env DEVELOPER_DIR=/Applications/Xcode-16.2.0.app xcrun swift build --arch arm64Build 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/adamwulf/mcp-template.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/adamwulf/mcp-template
* branch main -> FETCH_HEAD
* [new branch] main -> origin/main
HEAD is now at fc2642c Merge agent agent-8e9a84d6 work
Cloned https://github.com/adamwulf/mcp-template.git
Revision (git rev-parse @):
fc2642cabf061928f8ce590d95dc400cf4bca48b
SUCCESS checkout https://github.com/adamwulf/mcp-template.git at main
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Build
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Selected platform: macosSpm
Swift version: 6.0
Building package at path: $PWD
https://github.com/adamwulf/mcp-template.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.2.0.app xcrun swift build --arch arm64
[1/1] Compiling plugin GenerateDoccReference
[2/2] Compiling plugin GenerateManual
Building for debugging...
[2/17] Write sources
[3/17] Write mcpexample-entitlement.plist
[3/17] Write sources
[12/17] Compiling CSystem shims.c
[13/17] Write swift-version-5BDAB9E9C0126B9D.txt
[15/58] Compiling ArgumentParserToolInfo ToolInfo.swift
[16/58] Emitting module ArgumentParserToolInfo
[17/105] Compiling ArgumentParser BashCompletionsGenerator.swift
[18/105] Compiling ArgumentParser CompletionsGenerator.swift
[19/105] Compiling ArgumentParser FishCompletionsGenerator.swift
[20/108] Compiling ArgumentParser ZshCompletionsGenerator.swift
[21/108] Compiling ArgumentParser Argument.swift
[22/108] Compiling ArgumentParser ArgumentDiscussion.swift
[23/108] Compiling ArgumentParser ParsableCommand.swift
[24/108] Compiling ArgumentParser ArgumentDecoder.swift
[25/108] Compiling ArgumentParser ArgumentDefinition.swift
[26/108] Compiling ArgumentParser ArgumentSet.swift
[27/108] Compiling ArgumentParser CommandParser.swift
[28/108] Compiling ArgumentParser CommandConfiguration.swift
[29/108] Compiling Logging MetadataProvider.swift
[30/108] Emitting module Logging
[31/108] Compiling Logging Locks.swift
[32/108] Compiling SystemPackage Util+StringArray.swift
[33/108] Compiling SystemPackage Util.swift
[34/108] Compiling SystemPackage UtilConsumers.swift
[35/108] Compiling ArgumentParser CollectionExtensions.swift
[36/108] Compiling ArgumentParser Foundation.swift
[37/108] Compiling ArgumentParser Mutex.swift
[38/108] Compiling ArgumentParser CommandGroup.swift
[39/108] Compiling ArgumentParser EnumerableFlag.swift
[40/108] Compiling ArgumentParser ExpressibleByArgument.swift
[41/108] Compiling ArgumentParser ParsableArguments.swift
[42/108] Compiling ArgumentParser MessageInfo.swift
[43/108] Compiling ArgumentParser UsageGenerator.swift
[44/108] Compiling ArgumentParser ArgumentHelp.swift
[45/108] Compiling ArgumentParser ArgumentVisibility.swift
[46/108] Compiling ArgumentParser CompletionKind.swift
[47/108] Compiling ArgumentParser Errors.swift
[48/108] Compiling ArgumentParser Flag.swift
[49/108] Compiling ArgumentParser Platform.swift
[50/108] Emitting module SystemPackage
[51/108] Compiling Logging LogEvent.swift
[52/108] Compiling Logging Logging.swift
[53/108] Compiling Logging LogHandler.swift
[54/108] Emitting module ArgumentParser
[60/113] Compiling ArgumentParser InputKey.swift
[61/113] Compiling ArgumentParser InputOrigin.swift
[62/113] Compiling ArgumentParser Name.swift
[63/113] Compiling ArgumentParser Parsed.swift
[64/113] Compiling ArgumentParser ParsedValues.swift
[65/113] Compiling ArgumentParser NameSpecification.swift
[66/113] Compiling ArgumentParser Option.swift
[67/113] Compiling ArgumentParser OptionGroup.swift
[68/113] Compiling ArgumentParser ParentCommand.swift
[69/113] Compiling ArgumentParser AsyncParsableCommand.swift
[75/113] Compiling ArgumentParser CodingKeyValidator.swift
[76/113] Compiling ArgumentParser NonsenseFlagsValidator.swift
[77/113] Compiling ArgumentParser ParsableArgumentsValidation.swift
[78/113] Compiling ArgumentParser PositionalArgumentsValidator.swift
[79/113] Compiling ArgumentParser UniqueNamesValidator.swift
[84/113] Compiling ArgumentParser Tree.swift
[85/113] Compiling ArgumentParser ParserError.swift
[86/113] Compiling ArgumentParser SplitArguments.swift
[87/113] Compiling ArgumentParser DumpHelpGenerator.swift
[88/113] Compiling ArgumentParser HelpCommand.swift
[89/113] Compiling ArgumentParser HelpGenerator.swift
[106/113] Compiling EventSource EventSource+AsyncHTTPClient.swift
[107/113] Emitting module EventSource
[108/113] Compiling EventSource AsyncSequence+Events.swift
[109/113] Compiling EventSource AsyncEventsSequence.swift
[110/113] Compiling EventSource EventSource.swift
[111/157] Emitting module MCP
[112/161] Compiling MCP OAuthDiscovery.swift
[113/161] Compiling MCP OAuthDiscoveryClient.swift
[114/161] Compiling MCP OAuthErrors.swift
[115/161] Compiling MCP OAuthModels.swift
[116/161] Compiling MCP OAuthTokenEndpointClient.swift
[117/161] Compiling MCP Cancellation.swift
[118/161] Compiling MCP Ping.swift
[119/161] Compiling MCP Progress.swift
[120/161] Compiling MCP RequestContext.swift
[121/161] Compiling MCP Value.swift
[122/161] Compiling MCP OAuthAuthorizationCodeFlow.swift
[123/161] Compiling MCP OAuthAuthorizer.swift
[124/161] Compiling MCP OAuthClientRegistrar.swift
[125/161] Compiling MCP OAuthConfiguration.swift
[126/161] Compiling MCP OAuthConstants.swift
[127/161] Compiling MCP ID.swift
[128/161] Compiling MCP Icon.swift
[129/161] Compiling MCP Lifecycle.swift
[130/161] Compiling MCP Messages.swift
[131/161] Compiling MCP PendingRequest.swift
[132/161] Compiling MCP StatelessHTTPServerTransport.swift
[133/161] Compiling MCP InMemoryTransport.swift
[134/161] Compiling MCP NetworkTransport.swift
[135/161] Compiling MCP StdioTransport.swift
[136/161] Compiling MCP UnitInterval.swift
[137/161] Compiling MCP Versioning.swift
[138/161] Compiling MCP Client.swift
[139/161] Compiling MCP Elicitation.swift
[140/161] Compiling MCP Roots.swift
[141/161] Compiling MCP Transport.swift
/Users/admin/builder/spi-builder-workspace/.build/checkouts/swift-sdk/Sources/MCP/Base/Transports/HTTPClientTransport.swift:485:31: error: missing argument for parameter 'of' in call
483 | let timeout = self.sseInitializationTimeout
484 | do {
485 | try await withThrowingTaskGroup { group in
| `- error: missing argument for parameter 'of' in call
486 | group.addTask {
487 | try await Task.sleep(for: .seconds(timeout))
_Concurrency.withThrowingTaskGroup:3:24: note: 'withThrowingTaskGroup(of:returning:isolation:body:)' declared here
1 | @available(macOS 10.15, iOS 13.0, watchOS 6.0, tvOS 13.0, *)
2 | @backDeployed(before: macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0)
3 | @inlinable public func withThrowingTaskGroup<ChildTaskResult, GroupResult>(of childTaskResultType: ChildTaskResult.Type, returning returnType: GroupResult.Type = GroupResult.self, isolation: isolated (any Actor)? = #isolation, body: (inout ThrowingTaskGroup<ChildTaskResult, any Error>) async throws -> GroupResult) async rethrows -> GroupResult where ChildTaskResult : Sendable
| `- note: 'withThrowingTaskGroup(of:returning:isolation:body:)' declared here
[142/161] Compiling MCP HTTPClientTransport.swift
/Users/admin/builder/spi-builder-workspace/.build/checkouts/swift-sdk/Sources/MCP/Base/Transports/HTTPClientTransport.swift:485:31: error: missing argument for parameter 'of' in call
483 | let timeout = self.sseInitializationTimeout
484 | do {
485 | try await withThrowingTaskGroup { group in
| `- error: missing argument for parameter 'of' in call
486 | group.addTask {
487 | try await Task.sleep(for: .seconds(timeout))
_Concurrency.withThrowingTaskGroup:3:24: note: 'withThrowingTaskGroup(of:returning:isolation:body:)' declared here
1 | @available(macOS 10.15, iOS 13.0, watchOS 6.0, tvOS 13.0, *)
2 | @backDeployed(before: macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0)
3 | @inlinable public func withThrowingTaskGroup<ChildTaskResult, GroupResult>(of childTaskResultType: ChildTaskResult.Type, returning returnType: GroupResult.Type = GroupResult.self, isolation: isolated (any Actor)? = #isolation, body: (inout ThrowingTaskGroup<ChildTaskResult, any Error>) async throws -> GroupResult) async rethrows -> GroupResult where ChildTaskResult : Sendable
| `- note: 'withThrowingTaskGroup(of:returning:isolation:body:)' declared here
[143/161] Compiling MCP HTTPRequestValidation.swift
/Users/admin/builder/spi-builder-workspace/.build/checkouts/swift-sdk/Sources/MCP/Base/Transports/HTTPClientTransport.swift:485:31: error: missing argument for parameter 'of' in call
483 | let timeout = self.sseInitializationTimeout
484 | do {
485 | try await withThrowingTaskGroup { group in
| `- error: missing argument for parameter 'of' in call
486 | group.addTask {
487 | try await Task.sleep(for: .seconds(timeout))
_Concurrency.withThrowingTaskGroup:3:24: note: 'withThrowingTaskGroup(of:returning:isolation:body:)' declared here
1 | @available(macOS 10.15, iOS 13.0, watchOS 6.0, tvOS 13.0, *)
2 | @backDeployed(before: macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0)
3 | @inlinable public func withThrowingTaskGroup<ChildTaskResult, GroupResult>(of childTaskResultType: ChildTaskResult.Type, returning returnType: GroupResult.Type = GroupResult.self, isolation: isolated (any Actor)? = #isolation, body: (inout ThrowingTaskGroup<ChildTaskResult, any Error>) async throws -> GroupResult) async rethrows -> GroupResult where ChildTaskResult : Sendable
| `- note: 'withThrowingTaskGroup(of:returning:isolation:body:)' declared here
[144/161] Compiling MCP HTTPServerTypes.swift
/Users/admin/builder/spi-builder-workspace/.build/checkouts/swift-sdk/Sources/MCP/Base/Transports/HTTPClientTransport.swift:485:31: error: missing argument for parameter 'of' in call
483 | let timeout = self.sseInitializationTimeout
484 | do {
485 | try await withThrowingTaskGroup { group in
| `- error: missing argument for parameter 'of' in call
486 | group.addTask {
487 | try await Task.sleep(for: .seconds(timeout))
_Concurrency.withThrowingTaskGroup:3:24: note: 'withThrowingTaskGroup(of:returning:isolation:body:)' declared here
1 | @available(macOS 10.15, iOS 13.0, watchOS 6.0, tvOS 13.0, *)
2 | @backDeployed(before: macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0)
3 | @inlinable public func withThrowingTaskGroup<ChildTaskResult, GroupResult>(of childTaskResultType: ChildTaskResult.Type, returning returnType: GroupResult.Type = GroupResult.self, isolation: isolated (any Actor)? = #isolation, body: (inout ThrowingTaskGroup<ChildTaskResult, any Error>) async throws -> GroupResult) async rethrows -> GroupResult where ChildTaskResult : Sendable
| `- note: 'withThrowingTaskGroup(of:returning:isolation:body:)' declared here
[145/161] Compiling MCP StatefulHTTPServerTransport.swift
/Users/admin/builder/spi-builder-workspace/.build/checkouts/swift-sdk/Sources/MCP/Base/Transports/HTTPClientTransport.swift:485:31: error: missing argument for parameter 'of' in call
483 | let timeout = self.sseInitializationTimeout
484 | do {
485 | try await withThrowingTaskGroup { group in
| `- error: missing argument for parameter 'of' in call
486 | group.addTask {
487 | try await Task.sleep(for: .seconds(timeout))
_Concurrency.withThrowingTaskGroup:3:24: note: 'withThrowingTaskGroup(of:returning:isolation:body:)' declared here
1 | @available(macOS 10.15, iOS 13.0, watchOS 6.0, tvOS 13.0, *)
2 | @backDeployed(before: macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0)
3 | @inlinable public func withThrowingTaskGroup<ChildTaskResult, GroupResult>(of childTaskResultType: ChildTaskResult.Type, returning returnType: GroupResult.Type = GroupResult.self, isolation: isolated (any Actor)? = #isolation, body: (inout ThrowingTaskGroup<ChildTaskResult, any Error>) async throws -> GroupResult) async rethrows -> GroupResult where ChildTaskResult : Sendable
| `- note: 'withThrowingTaskGroup(of:returning:isolation:body:)' declared here
[146/161] Compiling MCP OAuthURLValidator.swift
[147/161] Compiling MCP OAuthWWWAuthenticateParser.swift
[148/161] Compiling MCP PKCE.swift
[149/161] Compiling MCP TokenStorage.swift
[150/161] Compiling MCP Error.swift
[151/161] Compiling MCP Sampling.swift
[152/161] Compiling MCP Data+Extensions.swift
[153/161] Compiling MCP Completion.swift
[154/161] Compiling MCP Logging.swift
[155/161] Compiling MCP Prompts.swift
[156/161] Compiling MCP Resources.swift
[157/161] Compiling MCP Server.swift
[158/161] Compiling MCP Tools.swift
Fetching https://github.com/modelcontextprotocol/swift-sdk
[1/3480] Fetching swift-sdk
Fetched https://github.com/modelcontextprotocol/swift-sdk from cache (1.07s)
Fetching https://github.com/apple/swift-argument-parser
Fetching https://github.com/apple/swift-log.git
Fetching https://github.com/mattt/eventsource.git
Fetching https://github.com/apple/swift-system.git
[1/271] Fetching eventsource
[272/6939] Fetching eventsource, swift-log
[273/12540] Fetching eventsource, swift-log, swift-system
[1066/30004] Fetching eventsource, swift-log, swift-system, swift-argument-parser
Fetched https://github.com/apple/swift-system.git from cache (1.19s)
Fetched https://github.com/mattt/eventsource.git from cache (1.19s)
Fetched https://github.com/apple/swift-log.git from cache (1.19s)
[3843/17464] Fetching swift-argument-parser
Fetched https://github.com/apple/swift-argument-parser from cache (1.50s)
Computing version for https://github.com/mattt/eventsource.git
Computed https://github.com/mattt/eventsource.git at 1.4.1 (0.45s)
Computing version for https://github.com/apple/swift-argument-parser
Computed https://github.com/apple/swift-argument-parser at 1.7.1 (0.52s)
Computing version for https://github.com/apple/swift-system.git
Computed https://github.com/apple/swift-system.git at 1.6.4 (0.51s)
Computing version for https://github.com/apple/swift-log.git
Computed https://github.com/apple/swift-log.git at 1.11.0 (0.45s)
Creating working copy for https://github.com/mattt/eventsource.git
Working copy of https://github.com/mattt/eventsource.git resolved at 1.4.1
Creating working copy for https://github.com/apple/swift-argument-parser
Working copy of https://github.com/apple/swift-argument-parser resolved at 1.7.1
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/modelcontextprotocol/swift-sdk
Working copy of https://github.com/modelcontextprotocol/swift-sdk resolved at main (cb6a62f)
Creating working copy for https://github.com/apple/swift-log.git
Working copy of https://github.com/apple/swift-log.git resolved at 1.11.0
BUILD FAILURE 6.0 macosSpm