error[E0369]: cannot add `{integer}` to `Foo`
  --> $DIR/recursion3.rs:9:29
   |
LL |     let x: u32 = foo(false) + 42;
   |                  ---------- ^ -- {integer}
   |                  |
   |                  Foo

error[E0369]: cannot add `{integer}` to `impl Debug`
  --> $DIR/recursion3.rs:17:29
   |
LL |     let x: u32 = bar(false) + 42;
   |                  ---------- ^ -- {integer}
   |                  |
   |                  impl Debug

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0369`.