Failed to inference return type of closure.

[12101111]

The code is https://github.com/rust-lang/rust/blob/master/src/bootstrap/config.rs#L560

The type of closure get_toml, toml and included_toml is inferenced to (), but it should be TomlConfig.

Even with a type annotation, the return type of get_toml is still ()

[flodiebold]

What happens if you move the local use std::process outside of the function? Or alternatively fully qualify the std::process:exit call.

[12101111]

use std::process outside of the function:

use std::process:exit:

[flodiebold]

So this is just a case of #1165; because the process::exit call isn't resolved when you're using a local import, we don't know that the error case diverges, so it gets typed as (), and since the type of table can be anything at that point, it'll get unified to () as well.