compiler/rustc_error_codes/src/error_codes/E0786.md

   1 A metadata file was invalid.
   2
   3 Erroneous code example:
   4
   5 ```ignore (needs extern files)
   6 use ::foo; // error: found invalid metadata files for crate `foo`
   7 ```
   8
   9 When loading crates, each crate must have a valid metadata file.
  10 Invalid files could be caused by filesystem corruption,
  11 an IO error while reading the file, or (rarely) a bug in the compiler itself.
  12
  13 Consider deleting the file and recreating it,
  14 or reporting a bug against the compiler.