src/test/ui/issues/issue-42954.stderr

   1 error: `<` is interpreted as a start of generic arguments for `u32`, not a comparison
   2   --> $DIR/issue-42954.rs:7:19
   3    |
   4 LL |         $i as u32 < 0
   5    |         --------- ^ - interpreted as generic arguments
   6    |         |         |
   7    |         |         not interpreted as comparison
   8    |         help: try comparing the cast value: `($i as u32)`
   9 ...
  10 LL |     is_plainly_printable!(c);
  11    |     ------------------------- in this macro invocation
  12
  13 error: aborting due to previous error
  14