Rust-clippy: ICEs should point to the clippy repo, not the rustc repo

[oli-obk]

Frequently ICEs in clippy are reported in the rustc repo. It would probably be better to collect them only here. This might need changes to rustc_driver to allow custom drivers to inject a repo name to report ICEs to.

[phansch]

Maybe we could use human-panic? I was trying to get it to work with clippy and it seems easy to add.

[oli-obk]

well... rustc could use it and then all drivers would benefit from it. I think all drivers should use a common infrastructure

[kennytm]

Well this particular issue should be reported to the rustc repo instead 😛

[phansch]

It's now possible to provide our own ICE hook. We currently use the rustc one via

https://github.com/rust-lang/rust-clippy/blob/a5e568bcc87fa8ce4c04a95b2441167e28e9458f/src/driver.rs#L250

To do that we only have to provide our own hook that calls rustc's report_ice function, similar to the one in rustc:

https://github.com/rust-lang/rust/blob/66bf391c3aabfc77f5f7139fc9e6944f995d574e/src/librustc_driver/lib.rs#L1172-L1178

Then we'lll also have to initialize our hook, like rustc:

https://github.com/rust-lang/rust/blob/66bf391c3aabfc77f5f7139fc9e6944f995d574e/src/librustc_driver/lib.rs#L1253-L1255

All this would happen in src/driver.rs.