Fix crash_test
Fix crash_test

Summary:
crash_test grep for 'fail' string in the output and if found it consider that we failed.
Update the output to use something else

Test Plan: make crash_test (still running)

Reviewers: yhchiang, sdong, andrewkr

Reviewed By: andrewkr

Subscribers: andrewkr, dhruba

Differential Revision: https://reviews.facebook.net/D57381

OverlordQ/rocksdb,wat-ze-hex/rocksdb,Andymic/rocksdb,OverlordQ/rocksdb,bbiao/rocksdb,bbiao/rocksdb,wenduo/rocksdb,facebook/rocksdb,vmx/rocksdb,wenduo/rocksdb,tsheasha/rocksdb,SunguckLee/RocksDB,SunguckLee/RocksDB,norton/rocksdb,Andymic/rocksdb,bbiao/rocksdb,SunguckLee/RocksDB,vmx/rocksdb,facebook/rocksdb,ryneli/rocksdb,jalexanderqed/rocksdb,wat-ze-hex/rocksdb,hobinyoon/rocksdb,vmx/rocksdb,OverlordQ/rocksdb,ryneli/rocksdb,ryneli/rocksdb,ryneli/rocksdb,OverlordQ/rocksdb,wat-ze-hex/rocksdb,norton/rocksdb,wat-ze-hex/rocksdb,vmx/rocksdb,tsheasha/rocksdb,norton/rocksdb,facebook/rocksdb,SunguckLee/RocksDB,ryneli/rocksdb,bbiao/rocksdb,wenduo/rocksdb,norton/rocksdb,hobinyoon/rocksdb,wat-ze-hex/rocksdb,norton/rocksdb,tsheasha/rocksdb,SunguckLee/RocksDB,hobinyoon/rocksdb,vmx/rocksdb,bbiao/rocksdb,vmx/rocksdb,wenduo/rocksdb,Andymic/rocksdb,Andymic/rocksdb,Andymic/rocksdb,ryneli/rocksdb,OverlordQ/rocksdb,wenduo/rocksdb,OverlordQ/rocksdb,OverlordQ/rocksdb,jalexanderqed/rocksdb,norton/rocksdb,jalexanderqed/rocksdb,hobinyoon/rocksdb,norton/rocksdb,wenduo/rocksdb,wenduo/rocksdb,hobinyoon/rocksdb,Andymic/rocksdb,vmx/rocksdb,facebook/rocksdb,wat-ze-hex/rocksdb,ryneli/rocksdb,jalexanderqed/rocksdb,wat-ze-hex/rocksdb,wenduo/rocksdb,Andymic/rocksdb,facebook/rocksdb,facebook/rocksdb,facebook/rocksdb,SunguckLee/RocksDB,Andymic/rocksdb,vmx/rocksdb,bbiao/rocksdb,tsheasha/rocksdb,wat-ze-hex/rocksdb,bbiao/rocksdb,tsheasha/rocksdb,norton/rocksdb,tsheasha/rocksdb,bbiao/rocksdb,jalexanderqed/rocksdb,tsheasha/rocksdb,hobinyoon/rocksdb,hobinyoon/rocksdb,SunguckLee/RocksDB,jalexanderqed/rocksdb,jalexanderqed/rocksdb,facebook/rocksdb,tsheasha/rocksdb,hobinyoon/rocksdb,SunguckLee/RocksDB