cli: cockroach quit reports transient RPC error during server shutdown, confuses acceptance tests #25870
Description
During a merge to master build for #25863 (which doesn't seem to have related changes), TestDockerCLI/test_audit_log.tcl flaked: https://teamcity.cockroachdb.com/viewLog.html?tab=buildLog&logTab=tree&filter=debug&expand=all&buildId=675599&_focus=1873
There seems to be an error encountered during shutdown of the test. The end of the output is:
.180523 18:29:23.153390098 EXPECT TEST: INTERRUPT TO FOREGROUND PROCESS
Error: interrupted
Failed running "sql"
.180523 18:29:23.561740353 EXPECT TEST: BEGIN STOP SERVER
graceful shutdown failed: rpc error: code = Internal desc = grpc: compressed flag set with identity or empty encoding; proceeding with hard shutdown
Error: unable to connect or connection lost.
Please check the address and credentials such as certificates (if attempting to
communicate with a secure cluster).
hard shutdown failed: Failed to connect to the node: error sending drain request: rpc error: code = Canceled desc = grpc: the client connection is closing
Failed running "quit"
child process exited abnormally
while executing
"system "$argv quit""
(procedure "stop_server" line 4)
invoked from within
"stop_server $argv"
(file "/go/src/github.com/cockroachdb/cockroach/cli/interactive_tests/test_audit_log.tcl" line 87)
non-zero exit code: 1
cli_test.go:92: non-zero exit code: 1