error[E0599]: no method named `guard` found for type `u32` in the current scope
 --> tests\fails\not_a_writer.rs:5:14
  |
5 |     colored!(not_a_writer, "test");
  |              ^^^^^^^^^^^^
  |
  = note: the method `guard` exists but the following trait bounds were not satisfied:
          `u32 : termcolor_output::WriteColorGuard`