stack trace is confusing

[bacalec]

Bossman failed and output started with a long stack trace that included non relevant diagnostic and suggestion:
"│ 22 │ raise BossmanError("Repository not initialized or needs migration, please run `bossm │"

Output ended with the error message:
"error: [Errno 11] Resource temporarily unavailable: '.bossmancache'"

I didn't notice it but I noticed that there was a bossman process still running. After this process was finished, i was able to run bossman.

It would be more clear if stack trace was not displayed with the verbosity by default.