1 error: this file contains an un-closed delimiter
2 --> $DIR/treat-err-as-bug.rs:13:16
9 thread '<unnamed>' panicked at 'encountered error with `-Z treat_err_as_bug', librustc_errors/lib.rs:486:13
10 note: Run with `RUST_BACKTRACE=1` for a backtrace.
12 error: internal compiler error: unexpected panic
14 note: the compiler unexpectedly panicked. this is a bug.
16 note: we would appreciate a bug report: https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md#bug-reports
18 note: rustc 1.30.0-dev running on x86_64-apple-darwin
20 note: compiler flags: -Z ui-testing -Z unstable-options -Z treat-err-as-bug