error: couldn't read $DIR/not-utf8.bin: stream did not contain valid UTF-8
  --> $DIR/not-utf8.rs:6:5
   |
LL |     include!("not-utf8.bin")
   |     ^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: this error originates in the macro `include` (in Nightly builds, run with -Z macro-backtrace for more info)

error: aborting due to 1 previous error