SOURCE_FILE
  USE
    USE_KW "use"
    WHITESPACE " "
    USE_TREE
      PATH
        PATH
          PATH_SEGMENT
            NAME_REF
              CRATE_KW "crate"
        COLON2 "::"
    SEMICOLON ";"
  WHITESPACE "\n"
error 11: expected identifier, `self`, `super`, `crate`, or `Self`
