privval: non-deterministic test failure on TestSocketPVVoteKeepalive #3237
Description
Attempting to run make test_cover from develop at present sometimes results in the following test failure emanating from privval/client_test.go:
--- FAIL: TestSocketPVVoteKeepalive (3.45s)
Error Trace: client_test.go:182
client_test.go:184
Error: Received unexpected error:
unmarshal to privval.RemoteSignerMsg failed after 4 bytes (unrecognized prefix bytes 48A6160A): 48A6160A5208022A0C088CB7CBE20510A0A0CBD0024240B72B728C333414BD783F5127DCAA67D4561F3C4E76FA55E272207418167F673B68483A8281243C65B5123536715EE4BC2CF6B2E3FF666BEDE4134DFE57E6600904
Test: TestSocketPVVoteKeepalive
This first occurred on CircleCI here and was replicated locally by running:
make test_coverThis test, however, does not fail when running:
GOCACHE=off go test -cover -race ./privval
ok github.com/tendermint/tendermint/privval 2.766s