error: unused `MustUse` that must be used
  --> $DIR/unused-result.rs:21:5
   |
LL |     foo::<MustUse>();
   |     ^^^^^^^^^^^^^^^^
   |
note: the lint level is defined here
  --> $DIR/unused-result.rs:2:25
   |
LL | #![deny(unused_results, unused_must_use)]
   |                         ^^^^^^^^^^^^^^^
help: use `let _ = ...` to ignore the resulting value
   |
LL |     let _ = foo::<MustUse>();
   |     +++++++

error: unused `MustUseMsg` that must be used
  --> $DIR/unused-result.rs:22:5
   |
LL |     foo::<MustUseMsg>();
   |     ^^^^^^^^^^^^^^^^^^^
   |
   = note: some message
help: use `let _ = ...` to ignore the resulting value
   |
LL |     let _ = foo::<MustUseMsg>();
   |     +++++++

error: unused result of type `isize`
  --> $DIR/unused-result.rs:34:5
   |
LL |     foo::<isize>();
   |     ^^^^^^^^^^^^^^^
   |
note: the lint level is defined here
  --> $DIR/unused-result.rs:2:9
   |
LL | #![deny(unused_results, unused_must_use)]
   |         ^^^^^^^^^^^^^^

error: unused `MustUse` that must be used
  --> $DIR/unused-result.rs:35:5
   |
LL |     foo::<MustUse>();
   |     ^^^^^^^^^^^^^^^^
   |
help: use `let _ = ...` to ignore the resulting value
   |
LL |     let _ = foo::<MustUse>();
   |     +++++++

error: unused `MustUseMsg` that must be used
  --> $DIR/unused-result.rs:36:5
   |
LL |     foo::<MustUseMsg>();
   |     ^^^^^^^^^^^^^^^^^^^
   |
   = note: some message
help: use `let _ = ...` to ignore the resulting value
   |
LL |     let _ = foo::<MustUseMsg>();
   |     +++++++

error: aborting due to 5 previous errors