error: unknown byte escape: f
  --> $DIR/byte-literals.rs:6:21
   |
LL | static FOO: u8 = b'\f';
   |                     ^ unknown byte escape

error: unknown byte escape: f
  --> $DIR/byte-literals.rs:9:8
   |
LL |     b'\f';
   |        ^ unknown byte escape

error: invalid character in numeric character escape: Z
  --> $DIR/byte-literals.rs:10:10
   |
LL |     b'\x0Z';
   |          ^

error: byte constant must be escaped: \t
  --> $DIR/byte-literals.rs:11:7
   |
LL |     b'    ';
   |       ^^^^

error: byte constant must be escaped: '
  --> $DIR/byte-literals.rs:12:7
   |
LL |     b''';
   |       ^

error: byte constant must be ASCII. Use a \xHH escape for a non-ASCII byte
  --> $DIR/byte-literals.rs:13:7
   |
LL |     b'é';
   |       ^

error: unterminated byte constant
  --> $DIR/byte-literals.rs:14:6
   |
LL |     b'a
   |      ^^^^

error: aborting due to 7 previous errors