running 1 test
test $DIR/display-output.rs - foo (line 6) ... ok

successes:

---- $DIR/display-output.rs - foo (line 6) stdout ----
warning: unused variable: `x`
  --> $DIR/display-output.rs:7:5
   |
LL | let x = 12;
   |     ^ help: if this is intentional, prefix it with an underscore: `_x`
   |
   = note: `#[warn(unused_variables)]` on by default

warning: 1 warning emitted



successes:
    $DIR/display-output.rs - foo (line 6)

test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in $TIME