ICE: unexpected panic in librustc/ty/mod.rs

[joshlf]

Source

lib.rs

Compiler output

error: internal compiler error: unexpected panic

note: the compiler unexpectedly panicked. this is a bug.

note: we would appreciate a bug report: https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md#bug-reports

note: rustc 1.22.0-nightly (6f87d20a7 2017-09-29) running on x86_64-apple-darwin

thread 'rustc' panicked at 'assertion failed: `(left == right)`
  left: `2`,
 right: `0`', src/librustc/ty/mod.rs:751:8
note: Run with `RUST_BACKTRACE=1` for a backtrace.

[arielb1]

Minified:

struct Node<K>(K);
impl<K> Node<K> {
    fn balance<'a, L: Into<&'a Node<K>>>() {}
}

fn main() {}