## [Rewrite `BackgroundMusicManager` to not run into framework
breakage](https://github.com/ppy/osu/commit/622216d8911832c39fa4e126b2810e4e0f46cbf7)
The attempted proper fix to this was
https://github.com/ppy/osu-framework/pull/6727. Unfortunately when
presented with [the framework
bump](https://github.com/ppy/osu/pull/37217) with that change, CI says
"you're stupid" and fails on some disposal idiocy that of course is
undebuggable and irreproducible:
The active test run was aborted. Reason: Test host process crashed :
Unhandled exception. System.AggregateException: One or more errors
occurred. (Object reference not set to an instance of an object.)
---> System.NullReferenceException: Object reference not set to an
instance of an object.
at osu.Framework.Audio.Sample.SampleChannelBass.Dispose(Boolean
disposing)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext
executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location ---
at System.Threading.ExecutionContext.RunInternal(ExecutionContext
executionContext, ContextCallback callback, Object state)
at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task&
currentTaskSlot, Thread threadPoolThread)
--- End of inner exception stack trace ---
at osu.Framework.Audio.AudioCollectionManager`1.UpdateChildren()
at osu.Framework.Audio.AudioCollectionManager`1.UpdateChildren()
at osu.Framework.Audio.AudioCollectionManager`1.UpdateChildren()
at osu.Framework.Audio.AudioCollectionManager`1.UpdateChildren()
at osu.Framework.Threading.AudioThread.OnExit()
at osu.Framework.Threading.GameThread.setExitState(GameThreadState
exitState)
at osu.Framework.Threading.GameThread.RunSingleFrame()
at osu.Framework.Threading.GameThread.<createThread>g__runWork|70_0()
at System.Threading.ExecutionContext.RunInternal(ExecutionContext
executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location ---
at System.Threading.ExecutionContext.RunInternal(ExecutionContext
executionContext, ContextCallback callback, Object state)
(https://github.com/ppy/osu/actions/runs/24019928154/job/70046733058?pr=37217#step:5:119)
I no longer have the energy for any of this shit.
@nekodex would appreciate if you could check that I actually haven't
broken anything with the bgm here. Seems okay to me in test scenes at
least.
## [Apply lowest-effort maybe-fixing changes to a bunch of flaking
tests](https://github.com/ppy/osu/commit/7bd3ca4adfcce5b90add11565a13f3fe9177ad5e)
None of the failures are reproducible locally, of course. I'm tired of
this. If anyone else wants to subject themselves to actually
investigating any of these, by all means, godspeed and good luck.
Bartłomiej Dach ·
Dean Herbert ·