error[E0277]: the type `[{integer}]` cannot be indexed by `u8`
  --> $DIR/indexing-requires-a-uint.rs:6:9
   |
LL |     [0][0u8];
   |         ^^^ slice indices are of type `usize` or ranges of `usize`
   |
   = help: the trait `SliceIndex<[{integer}]>` is not implemented for `u8`
   = help: the following other types implement trait `SliceIndex<T>`:
             `usize` implements `SliceIndex<ByteStr>`
             `usize` implements `SliceIndex<[T]>`
   = note: required for `[{integer}]` to implement `Index<u8>`
   = note: 1 redundant requirement hidden
   = note: required for `[{integer}; 1]` to implement `Index<u8>`

error[E0308]: mismatched types
  --> $DIR/indexing-requires-a-uint.rs:12:18
   |
LL |     bar::<isize>(i);  // i should not be re-coerced back to an isize
   |     ------------ ^ expected `isize`, found `usize`
   |     |
   |     arguments to this function are incorrect
   |
note: function defined here
  --> $DIR/indexing-requires-a-uint.rs:5:8
   |
LL |     fn bar<T>(_: T) {}
   |        ^^^    ----
help: you can convert a `usize` to an `isize` and panic if the converted value doesn't fit
   |
LL |     bar::<isize>(i.try_into().unwrap());  // i should not be re-coerced back to an isize
   |                   ++++++++++++++++++++

error: aborting due to 2 previous errors

Some errors have detailed explanations: E0277, E0308.
For more information about an error, try `rustc --explain E0277`.