error: Unsupported type for U8 attribute
  --> tests/compile_time/unsupported_char.rs:14:13
   |
14 |     second: char,
   |             ^^^^

error[E0425]: cannot find value `second` in this scope
  --> tests/compile_time/unsupported_char.rs:14:5
   |
14 |     second: char,
   |     ^^^^^^ not found in this scope

error[E0425]: cannot find value `fourth` in this scope
  --> tests/compile_time/unsupported_char.rs:16:5
   |
16 |     fourth: u8,
   |     ^^^^^^ not found in this scope