Summary: We rely on a basic evaluation logic: when using an expression `A || B`, the `B` part will only get evaluated when `A` fails. Therefore the task creation tool is guaranteed to run if previous build/test step failed. To indicate the correct return value to shell, the task creation tool will call `exit(1)` which will cause Sandcastle to mark it as a failure.
Test Plan:
- Land the changes.
- Trigger a RocksDB contrun - observe the results.
- Look at the results from the nightly runs and fix issues as necessary.
Current testing so far has been in isolation for various components.
Reviewers: andrewkr, IslamAbdelRahman, sdong
Reviewed By: sdong
Subscribers: andrewkr, dhruba
Differential Revision: https://reviews.facebook.net/D60909
9c8ac144bd