Internal inconsistency error (didStartTask)

Question

Sometimes, about 2 times out of 10, when I run my application through Xcode, I get this error:

Internal inconsistency error (didStartTask): targetID (174) not found in _activeTargets.
Internal inconsistency error (didEndTask): '12' missing from _activeTasks.

This error is reproduced using Xcode 14.x, 15.x versions.

This error can be fixed by cleaning up the project and rebuilding it. I found thread on forums.swift.org, but it has no solution.

Judging by the thread, the problem may be in SPM and incorrect connection of dependencies

Anyone have a solution?

Altostratus

do any of your swift packages use a BuildToolPlugin? – Maneating

@Maneating Yes, I use several BuildToolPlugins. But plugin work successfully and the error occurred at the time of planning the build – Altostratus

Also getting this error in the Xcode 15.1 Beta 3, though here it actually breaks the build process with a Build failed and has a more detailed message: Internal inconsistency error: received multiple target ended messages for target ID '1' or received target ended message but did not receive corresponding target started message, while retrieving parent activity in taskStarted message. and Internal inconsistency error: received multiple task ended messages for task ID '4' or received task ended message but did not receive corresponding task started message. – Waggish

I'm using a local SPM package with the SwiftGenPlugin .plugin as well – Waggish

Still, the issue is on Xcode 15.0.1. I'm using SwiftGenPlugin. – Batchelor

The issue is still present on Xcode 15.2 – Patronage

Getting this on 15.3 with R.swift SPM plugin – Syncrisis

I'm still seeing this issue in Xcode 15.3 in a project that uses plugins: SwiftGenPlugin and XCStringsToolPlugin. – Imbrue

It says on swift.forum: Creating a build pre-action script for the scheme that you use with killall XCBBuildService. This generally helps, but carries a big overhead and maybe even more problems – Altostratus

Answer 1

I am not at all sure if this will help, but I had a similar message today a bunch of times and found this question, then tried Product -> Clean Build Folder and that cleared it up for the rest of the day. Seems like it had to do with something I changed on an observable value and something didn't get rebuilt fully.

Benavidez

Answer 2

In Xcode 16 Beta it seems to have been fixed:

Fixed an issue where projects using SwiftPM build tool plugins would sometimes report internal inconsistency errors when building. (121851192) (FB13565986)

Altostratus