Fix a tricky race in gopls/internal/regtest/diagnostics.Test_Issue38211:
When reloading the workspace, we can encounter context cancellation if
the snapshot is cancelled, and can write this cancellation as a critical
error *before* the context is cloned, leading to a state where there is
a critical error that won't go away.
This should resolve test flakes reported in golang/go#44098.
For golang/go#44098
Change-Id: I41c0f49b2fe999131f4c31166e69b2cde85470b7
Reviewed-on: https://go-review.googlesource.com/c/tools/+/419502
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Robert Findley <rfindley@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>