error: unreachable statement
  --> $DIR/expr_loop.rs:8:5
   |
LL |     loop { return; }
   |            ------ any code following this expression is unreachable
LL |     println!("I am dead.");
   |     ^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
   |
note: the lint level is defined here
  --> $DIR/expr_loop.rs:4:9
   |
LL | #![deny(unreachable_code)]
   |         ^^^^^^^^^^^^^^^^
   = note: this error originates in the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)

error: unreachable statement
  --> $DIR/expr_loop.rs:21:5
   |
LL |     loop { return; }
   |            ------ any code following this expression is unreachable
LL |     println!("I am dead.");
   |     ^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
   |
   = note: this error originates in the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)

error: unreachable statement
  --> $DIR/expr_loop.rs:32:5
   |
LL |     loop { 'middle: loop { loop { break 'middle; } } }
   |     -------------------------------------------------- any code following this expression is unreachable
LL |     println!("I am dead.");
   |     ^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
   |
   = note: this error originates in the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)

error: aborting due to 3 previous errors