error: comparison is useless due to type limits
  --> $DIR/lint-type-limits.rs:18:11
   |
LL |     while i >= 0 { //~ ERROR comparison is useless due to type limits
   |           ^^^^^^
   |
   = note: requested on the command line with `-D unused-comparisons`

error: comparison is useless due to type limits
  --> $DIR/lint-type-limits.rs:29:13
   |
LL |     let _ = u > 255; //~ ERROR comparison is useless due to type limits
   |             ^^^^^^^

error: comparison is useless due to type limits
  --> $DIR/lint-type-limits.rs:30:13
   |
LL |     let _ = 255 < u; //~ ERROR comparison is useless due to type limits
   |             ^^^^^^^

error: comparison is useless due to type limits
  --> $DIR/lint-type-limits.rs:31:13
   |
LL |     let _ = u < 0; //~ ERROR comparison is useless due to type limits
   |             ^^^^^

error: comparison is useless due to type limits
  --> $DIR/lint-type-limits.rs:32:13
   |
LL |     let _ = 0 > u; //~ ERROR comparison is useless due to type limits
   |             ^^^^^

error: comparison is useless due to type limits
  --> $DIR/lint-type-limits.rs:33:13
   |
LL |     let _ = u <= 255; //~ ERROR comparison is useless due to type limits
   |             ^^^^^^^^

error: comparison is useless due to type limits
  --> $DIR/lint-type-limits.rs:34:13
   |
LL |     let _ = 255 >= u; //~ ERROR comparison is useless due to type limits
   |             ^^^^^^^^

error: comparison is useless due to type limits
  --> $DIR/lint-type-limits.rs:35:13
   |
LL |     let _ = u >= 0; //~ ERROR comparison is useless due to type limits
   |             ^^^^^^

error: comparison is useless due to type limits
  --> $DIR/lint-type-limits.rs:36:13
   |
LL |     let _ = 0 <= u; //~ ERROR comparison is useless due to type limits
   |             ^^^^^^

error: aborting due to 9 previous errors