error[E0308]: mismatched types
  --> $DIR/mismatch-ty-dont-suggest.rs:5:18
   |
LL |     let v: i32 = b; // return type is not `Result`, we don't suggest ? here
   |            ---   ^ expected `i32`, found `Result<i32, ()>`
   |            |
   |            expected due to this
   |
   = note: expected type `i32`
              found enum `Result<i32, ()>`
help: consider using `Result::expect` to unwrap the `Result<i32, ()>` value, panicking if the value is a `Result::Err`
   |
LL |     let v: i32 = b.expect("REASON"); // return type is not `Result`, we don't suggest ? here
   |                   +++++++++++++++++

error[E0308]: mismatched types
  --> $DIR/mismatch-ty-dont-suggest.rs:12:18
   |
LL |     let v: i32 = b; // return type is not `Option`, we don't suggest ? here
   |            ---   ^ expected `i32`, found `Option<{integer}>`
   |            |
   |            expected due to this
   |
   = note: expected type `i32`
              found enum `Option<{integer}>`
help: consider using `Option::expect` to unwrap the `Option<{integer}>` value, panicking if the value is an `Option::None`
   |
LL |     let v: i32 = b.expect("REASON"); // return type is not `Option`, we don't suggest ? here
   |                   +++++++++++++++++

error[E0308]: mismatched types
  --> $DIR/mismatch-ty-dont-suggest.rs:18:18
   |
LL |     let v: i32 = Some(0);
   |            ---   ^^^^^^^ expected `i32`, found `Option<{integer}>`
   |            |
   |            expected due to this
   |
   = note: expected type `i32`
              found enum `Option<{integer}>`

error[E0308]: mismatched types
  --> $DIR/mismatch-ty-dont-suggest.rs:21:18
   |
LL |     let v: i32 = c;
   |            ---   ^ expected `i32`, found `Result<bool, _>`
   |            |
   |            expected due to this
   |
   = note: expected type `i32`
              found enum `Result<bool, _>`

error: aborting due to 4 previous errors

For more information about this error, try `rustc --explain E0308`.