Suppress panic message

[mzabaluev]

A bit late to this thread, but I'd like to present you with panic_control::spawn_quiet():

Panic-control: Test your panics with peace in mind

Recently I tried to test how my code behaves on occurrence of a panic. With only libstd facilities, it turned out to be fraught with problems: panics caused on purpose are cumbersome to distinguish from bona fide errors and assertion failures, and the default panic hook treats any panic as worth reporting it on stderr and even dumping the stack trace depending on the environment. To top it all, unwrap on a thread::Result cannot look into the panic message to include it in the panic message of th…