D0801 12:30:04.678073000 140736039076736 ev_posix.cc:174]              Using polling engine: poll
D0801 12:30:04.679382000 140736039076736 dns_resolver_ares.cc:485]     Using ares dns resolver
D0801 12:30:04.681033000 140736039076736 test_config.cc:384]           test slowdown factor: sanitizer=1, fixture=1, poller=1, total=1
Note: Google Test filter = WritesPerRpcTest.UnaryPingPong
[==========] Running 1 test from 1 test case.
[----------] Global test environment set-up.
[----------] 1 test from WritesPerRpcTest
[ RUN      ] WritesPerRpcTest.UnaryPingPong
E0801 12:30:04.682305000 140736039076736 writes_per_rpc_test.cc:216]   assertion failed: t == tag(0) || t == tag(1)
*******************************
Caught signal SIGABRT
  no backtrace