1error[E0308]: mismatched types
2  --> $DIR/wrong-ret-type.rs:2:49
3   |
4LL | fn mk_int() -> usize { let i: isize = 3; return i; }
5   |                -----                            ^ expected `usize`, found `isize`
6   |                |
7   |                expected `usize` because of return type
8   |
9help: you can convert an `isize` to a `usize` and panic if the converted value doesn't fit
10   |
11LL | fn mk_int() -> usize { let i: isize = 3; return i.try_into().unwrap(); }
12   |                                                  ++++++++++++++++++++
13
14error: aborting due to previous error
15
16For more information about this error, try `rustc --explain E0308`.
17