Gets stuck if file lock fails

[jan-rosendahl-rwth]

If for some reason a file lock can't be achieved (in my case a faulty nfs mount) the program gets stuck at

checkout_code/bin/checkout_code

Lines 94 to 95 in 4545a32

	lock = FileLock(working_dir.rstrip("/")+".lock")
	with lock:

failing after a time-out period would be nicer behaviour .

[kanedo]

I added a timeout option in branch dev/timeout. Would you mind testing this?
I have no good way of simulating a timeout. If it works for you I will it merge to the master

[jan-rosendahl-rwth]

Yes, that works. I got

[ERROR:checkout_code] Could not acquire lock. Timeout.

Thanks for the incredibly fast response!