error: unreachable statement
  --> $DIR/expr_again.rs:18:9
   |
18 |         println!("hi");
   |         ^^^^^^^^^^^^^^^
   |
note: lint level defined here
  --> $DIR/expr_again.rs:13:9
   |
13 | #![deny(unreachable_code)]
   |         ^^^^^^^^^^^^^^^^
   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: aborting due to previous error