jyn

> What else can it do to support multiple rustc sessions in the same process? Why do we want to support this? also though, why do we have code accessing...

> That is going to be a lot of work We'll need to do that work anyway to support parallel_compiler, though, right?

I think this needs an MCP. @DrMeepster can you open an issue on rust-lang/compiler-team?

> We should also investigate why this wasn't caught by CI - it makes the source directory read only, which should have prevented this being merged. I think it might...

@lionellloh "the difference between cargo check and cargo run" - the first just runs `rustc --emit metadata` while the second actually generates a binary and runs it. The reason it...

@lionellloh `touch src/test/ui/const-generics/const-argument-non-static-lifetime.rs` should work and be quite fast.

I think there's also a force-rerun flag or something like that.

@lionellloh path is passed all the time, but sometimes passed with -o instead of --out-dir. You can confirm this is the issue by running your `x test` command with -v,...

For anyone planning to pick up this issue: take a look at https://github.com/rust-lang/rust/pull/97573#discussion_r891875590, my instructions here are not quite right. > [passing both -o and --out-dir] fails the UI test:...

This might be https://github.com/m4b/faerie/pull/99#issuecomment-534143293 ? Not sure, I haven't looked at this since my PR.