Toggle stack unwinding without printing error message

[zonyitoo]

Is it possible to toggle stack unwinding without printing error message to stderr?

I am working on a coroutine library and I want to manually unwind the stack when destroying coroutines. But now I could only use panic! to do the trick.

[jonas-schievink]

Not possible at the moment, but there's an RFC that should allow what you want: rust-lang/rfcs#1100

[alexcrichton]

Thanks for the report! Right now the standard library doesn't support this sort of functionality, but it's available externally on crates.io. We may want to include this in the standard library at some point, but that's handled through RFCs and/or the nursery, so I'm going to close this issue.

[alexcrichton]

Wait holy cow I totally misinterpreted this. @jonas-schievink was spot on, however, so I'll still leave this closed in favor of that RFC