goroutine profile: total 15
2 @ 0x7ff7a3d93b74 0x7ff7a3df7a5c 0x7ff7a3df7890 0x7ff7a3e14660 0x7ff7a3e0e530 0x7ff7a3e0e521 0x7ff7a3e406c0 0x7ff7a3e4b5e4 0x7ff7a3e4b5d9 0x7ff7a3e9b580 0x7ff7a3e37998 0x7ff7a3ef26b4 0x7ff7a3ef2691 0x7ff7a3ef351c 0x7ff7a3dfb404
#	0x7ff7a3df7a5b	syscall.SyscallN+0xeb				C:/workdir/go/src/runtime/syscall_windows.go:557
#	0x7ff7a3df788f	syscall.Syscall6+0x3f				C:/workdir/go/src/runtime/syscall_windows.go:501
#	0x7ff7a3e1465f	syscall.readFile+0x7f				C:/workdir/go/src/syscall/zsyscall_windows.go:1024
#	0x7ff7a3e0e52f	syscall.ReadFile+0x2f				C:/workdir/go/src/syscall/syscall_windows.go:400
#	0x7ff7a3e0e520	syscall.Read+0x20				C:/workdir/go/src/syscall/syscall_windows.go:379
#	0x7ff7a3e406bf	internal/poll.(*FD).Read+0x1af			C:/workdir/go/src/internal/poll/fd_windows.go:427
#	0x7ff7a3e4b5e3	os.(*File).read+0x63				C:/workdir/go/src/os/file_posix.go:31
#	0x7ff7a3e4b5d8	os.(*File).Read+0x58				C:/workdir/go/src/os/file.go:118
...
#	0x7ff7a3df6157	sync.runtime_Semacquire+0x27							C:/workdir/go/src/runtime/sema.go:62
#	0x7ff7a3e0a15f	sync.(*WaitGroup).Wait+0x7f							C:/workdir/go/src/sync/waitgroup.go:139
#	0x7ff7a453730b	golang.org/x/tools/internal/lsp.(*Server).diagnoseSnapshots+0x1cb		C:/workdir/gopath/src/golang.org/x/tools/internal/lsp/diagnostics.go:108
#	0x7ff7a454f257	golang.org/x/tools/internal/lsp.(*Server).processModifications.func1+0x37	C:/workdir/gopath/src/golang.org/x/tools/internal/lsp/text_synchronization.go:300

--- FAIL: TestUnusedDiag (24.36s)
    --- FAIL: TestUnusedDiag/default (17.34s)
        --- FAIL: TestUnusedDiag/default/singleton (13.35s)
            runner.go:348: closing editor: Shutdown: context deadline exceeded
            runner.go:322: closing the sandbox: error(s) cleaning sandbox: cleaning modcache: <nil>; removing files: remove C:\Users\gopher\AppData\Local\Temp\gopls-regtest-277654378\TestUnusedDiag\default\singleton\work\a: The process cannot access the file because it is being used by another process.