Error: Base-level rules cannot contain the parent-selector-referencing character '&'.
        on line 30 of /home/saper/sw/libsass/sass-spec/spec/libsass-todo-tests/parent-selector/missing/input.scss, in `@content'
        from line 22 of /home/saper/sw/libsass/sass-spec/spec/libsass-todo-tests/parent-selector/missing/input.scss, in `grid-media-query'
        from line 29 of /home/saper/sw/libsass/sass-spec/spec/libsass-todo-tests/parent-selector/missing/input.scss
  Use --trace for backtrace.
