---- src/byte_char_slice.rs - byte_char_slice::BYTE_CHAR_SLICE (line 21) stdout ----
error[E0308]: mismatched types
 --> src/byte_char_slice.rs:22:1
  |
2 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_byte_char_slice_rs_21_0() {
  |                                                                                     - help: try adding a return type: `-> &'static [u8; 5]`
3 | b"Hello"
  | ^^^^^^^^ expected `()`, found `&[u8; 5]`

error: aborting due to previous error

For more information about this error, try `rustc --explain E0308`.
Couldn't compile the test.
---- src/byte_char_slice.rs - byte_char_slice::BYTE_CHAR_SLICE (line 17) stdout ----
error[E0308]: mismatched types
 --> src/byte_char_slice.rs:18:1
  |
2 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_byte_char_slice_rs_17_0() {
  |                                                                                     - help: try adding a return type: `-> &[u8; 5]`
3 | &[b'H', b'e', b'l', b'l', b'o']
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `()`, found `&[u8; 5]`

error: aborting due to previous error

error: can be more succinctly written as a byte str
   --> src/symbolize/perf_map.rs:381:58
    |
381 |         let () = child.stdin.as_ref().unwrap().write_all(&[b'\n']).unwrap();
    |                                                          ^^^^^^^^ help: try: `b"\n"`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#byte_char_slices
    = note: `-D clippy::byte-char-slices` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(clippy::byte_char_slices)]`

error[E0308]: mismatched types
   --> src/symbolize/perf_map.rs:382:60
    |
382 |         let () = child.stdin.as_ref().unwrap().write_all(&[b"\n"]).unwrap();
    |                                                            ^^^^^ expected `u8`, found `&[u8; 1]`