I got the build commands to run, but I ran into an access denied issue. I thought it might be some sort of dangling process, so I added a called to ps. I don't see anything suspicious, just bash and ps itself.

[task 2023-09-11T16:10:15.983Z] ps -aef --forest
[task 2023-09-11T16:10:15.983Z] + ps -aef --forest
[task 2023-09-11T16:10:16.115Z]      UID     PID    PPID TTY     STIME COMMAND
[task 2023-09-11T16:10:16.115Z] task_169    4996       1 con  16:07:39 /usr/bin/bash
[task 2023-09-11T16:10:16.115Z] task_169    1416    4996 con  16:10:16 /usr/bin/ps
[taskcluster 2023-09-11T16:10:16.143Z]    Exit Code: 0
[taskcluster 2023-09-11T16:10:16.143Z]    User Time: 0s
[taskcluster 2023-09-11T16:10:16.143Z]  Kernel Time: 0s
[taskcluster 2023-09-11T16:10:16.143Z]    Wall Time: 2m59.1815824s
[taskcluster 2023-09-11T16:10:16.143Z]       Result: SUCCEEDED
[taskcluster 2023-09-11T16:10:16.143Z] === Task Finished ===
[taskcluster 2023-09-11T16:10:16.143Z] Task Duration: 2m59.1835827s
[taskcluster 2023-09-11T16:10:16.201Z] Uploading artifact public/build/dist.7z from file artifacts\dist.7z with content encoding "identity", mime type "application/octet-stream" and expiry 2023-10-09T15:26:52.633Z
[taskcluster 2023-09-11T16:10:16.943Z] [mounts] Preserving cache: Moving "Z:\\task_169444836948753\\build" to "Z:\\caches\\Vd6dvorUSdWLZ3HlNo4kfg"
[taskcluster 2023-09-11T16:10:22.755Z] [mounts] Removing cache nss-level-1-checkouts-repos-95fb73339e55f80b1838fa820a9e7bc6b5f840909c74d718a6f702c44843ceb9 from cache table
[taskcluster 2023-09-11T16:10:22.755Z] [mounts] Deleting cache nss-level-1-checkouts-repos-95fb73339e55f80b1838fa820a9e7bc6b5f840909c74d718a6f702c44843ceb9 file(s) at Z:\caches\Vd6dvorUSdWLZ3HlNo4kfg
[taskcluster 2023-09-11T16:10:25.157Z] Uploading link artifact public/logs/live.log to artifact public/logs/live_backing.log with expiry 2023-10-09T15:26:52.633Z
[taskcluster:error] goroutine 1 [running]:
[taskcluster:error] runtime/debug.Stack(0xc000123388, 0x98ac00, 0xc00baf5f20)
[taskcluster:error] 	/task_161962134306944/go/go/src/runtime/debug/stack.go:24 +0xa5
[taskcluster:error] main.(*TaskRun).Run.func2(0xc0004a81c8, 0xc0002a6800, 0xc0004a81d0)
[taskcluster:error] 	/task_161962134306944/taskcluster/workers/generic-worker/main.go:895 +0x426
[taskcluster:error] panic(0x98ac00, 0xc00baf5f20)
[taskcluster:error] 	/task_161962134306944/go/go/src/runtime/panic.go:971 +0x49a
[taskcluster:error] main.(*WritableDirectoryCache).Unmount(0xc0003d5860, 0xc0002a6800, 0x27, 0x0)
[taskcluster:error] 	/task_161962134306944/taskcluster/workers/generic-worker/mounts.go:516 +0x427
[taskcluster:error] main.(*TaskMount).Stop(0xc0001f2150, 0xc0001191e8)
[taskcluster:error] 	/task_161962134306944/taskcluster/workers/generic-worker/mounts.go:377 +0x9b
[taskcluster:error] main.(*TaskRun).Run.func3(0xc0004a81c8, 0xb26638, 0xc0001f2150, 0xb27af8, 0xe5bd28)
[taskcluster:error] 	/task_161962134306944/taskcluster/workers/generic-worker/main.go:977 +0xc8
[taskcluster:error] main.(*TaskRun).Run(0xc0002a6800, 0x9)
[taskcluster:error] 	/task_161962134306944/taskcluster/workers/generic-worker/main.go:1061 +0xa17
[taskcluster:error] main.RunWorker(0x0)
[taskcluster:error] 	/task_161962134306944/taskcluster/workers/generic-worker/main.go:426 +0xce5
[taskcluster:error] main.main()
[taskcluster:error] 	/task_161962134306944/taskcluster/workers/generic-worker/main.go:158 +0x739
[taskcluster:error] 
[taskcluster:error] &fs.PathError{Op:"remove", Path:"Z:\\caches\\Vd6dvorUSdWLZ3HlNo4kfg\\src\\vs2017_15.4.2\\VC\\bin\\Hostx64\\x64\\mspdbcore.dll", Err:0x5}
[taskcluster:error] remove Z:\caches\Vd6dvorUSdWLZ3HlNo4kfg\src\vs2017_15.4.2\VC\bin\Hostx64\x64\mspdbcore.dll: Access is denied.

Gabriel Bustamante [:gabriel]