error[E0308]: mismatched types
  --> $DIR/span-preservation.rs:11:20
   |
LL |     let x: usize = "hello";
   |            -----   ^^^^^^^ expected `usize`, found `&str`
   |            |
   |            expected due to this

error[E0308]: mismatched types
  --> $DIR/span-preservation.rs:17:29
   |
LL | fn b(x: Option<isize>) -> usize {
   |                           ----- expected `usize` because of return type
LL |     match x {
LL |         Some(x) => { return x },
   |                             ^ expected `usize`, found `isize`
   |
help: you can convert an `isize` to a `usize` and panic if the converted value doesn't fit
   |
LL |         Some(x) => { return x.try_into().unwrap() },
   |                              ++++++++++++++++++++

error[E0308]: mismatched types
  --> $DIR/span-preservation.rs:33:22
   |
LL |     let x = Foo { a: 10isize };
   |                      ^^^^^^^ expected `usize`, found `isize`

error[E0560]: struct `Foo` has no field named `b`
  --> $DIR/span-preservation.rs:34:26
   |
LL |     let y = Foo { a: 10, b: 10isize };
   |                          ^ `Foo` does not have this field
   |
   = note: all struct fields are already assigned

error[E0308]: mismatched types
  --> $DIR/span-preservation.rs:39:5
   |
LL | extern "C" fn bar() {
   |                    - help: try adding a return type: `-> i32`
LL |     0
   |     ^ expected `()`, found integer

error[E0308]: mismatched types
  --> $DIR/span-preservation.rs:44:5
   |
LL | extern "C" fn baz() {
   |                    - help: try adding a return type: `-> i32`
LL |     0
   |     ^ expected `()`, found integer

error[E0308]: mismatched types
  --> $DIR/span-preservation.rs:49:5
   |
LL | extern "Rust" fn rust_abi() {
   |                            - help: try adding a return type: `-> i32`
LL |     0
   |     ^ expected `()`, found integer

error[E0308]: mismatched types
  --> $DIR/span-preservation.rs:54:5
   |
LL | extern "\x43" fn c_abi_escaped() {
   |                                 - help: try adding a return type: `-> i32`
LL |     0
   |     ^ expected `()`, found integer

error: aborting due to 8 previous errors

Some errors have detailed explanations: E0308, E0560.
For more information about an error, try `rustc --explain E0308`.