you are on the testing team at work. unfortunately, your companies programmers do not have good testing practices. there aren’t many tests written, and the ones that are out there don’t work reliably: they pass some of the time, but they often fail for unrelated reasons. while your developers get their testing act together, your boss wants you to write a tool to at least make the tests relatively usable.

you have to write an unflake program that will rerun a test if it fails the first time (or the 2nd time or 3rd time …). you also need to keep track of stdout and stderr in a single file from the tests, so you need to log them to a file. once the program completes, you need to print how many times the program ran, the exit code or signal that killed the program, and print the program output. the exit code of unflake must match the exit code of the last run. if the last run will killed with a signal, unflake should have an exit code of 255.