Consider double panic case

[killercup]

In the callback given to set_hook, we have an explicit unwrap/expect:

https://github.com/yoshuawuyts/human-panic/blob/d86232967d3bf9dc868a4cd68bab2e1004b6d2dc/src/lib.rs#L47-L48

This can lead to panicking while handling a panic. I'm not entirely sure what happens then (we should probably test it), but we can easily mitigate this by just printing a generic error instead.

One step further would be to handle explicit error cases, e.g., not being able to write the temporary file and printing the report to stdout instead.

[skade]

This can lead to panicking while handling a panic. I'm not entirely sure what happens then (we should probably test it), but we can easily mitigate this by just printing a generic error instead.

Double panics abort immediately. The hook is already considered part of the panic.

https://play.rust-lang.org/?gist=da61185963bfcd469df767c48f450708&version=stable

The message is:

thread panicked while processing panic. aborting.

[yoshuawuyts]

One step further would be to handle explicit error cases, e.g., not being able to write the temporary file and printing the report to stdout instead.

Yeah, that sounds pretty good!

[spacekookie]

Fixed by #33