$ rustc lifetimestruct1_bad.rs 
error[E0106]: missing lifetime specifier
 --> lifetimestruct1_bad.rs:2:12
  |
2 |     width: &i32,
  |            ^ expected lifetime parameter

error[E0106]: missing lifetime specifier
 --> lifetimestruct1_bad.rs:3:13
  |
3 |     height: &i32,
  |             ^ expected lifetime parameter

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0106`.