DEPRECATION WARNING on line 3 of /sass/spec/output_styles/compressed/libsass/interpolated-urls/input.scss: #{} interpolation near operators will be simplified
in a future version of Sass. To preserve the current behavior, use quotes:

  unquote('"url("#{$base_url}"img/beta.png)"')

You can use the sass-convert command to automatically fix most cases.

DEPRECATION WARNING on line 11 of /sass/spec/output_styles/compressed/libsass/interpolated-urls/input.scss: #{} interpolation near operators will be simplified
in a future version of Sass. To preserve the current behavior, use quotes:

  unquote("#{blix "fludge"}#{hey now}123")

You can use the sass-convert command to automatically fix most cases.
