Sass color segfaults

_colors.scss

// works here

.sp-sat {
    -ms-filter: "progid:DXImageTransform.Microsoft.gradient(GradientType = 1, startColorstr=#FFFFFFFF, endColorstr=#00CC9A81)";
    filter : progid:DXImageTransform.Microsoft.gradient(GradientType = 1, startColorstr='#FFFFFFFF', endColorstr='#00CC9A81');
}
.sp-val {
    -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#00CC9A81, endColorstr=#FF000000)";
    filter : progid:DXImageTransform.Microsoft.gradient(startColorstr='#00CC9A81', endColorstr='#FF000000');
}

.sp-hue {
    background: -moz-linear-gradient(top, #ff0000 0%, #ffff00 17%, #00ff00 33%, #00ffff 50%, #0000ff 67%, #ff00ff 83%, #ff0000 100%);
    background: -ms-linear-gradient(top, #ff0000 0%, #ffff00 17%, #00ff00 33%, #00ffff 50%, #0000ff 67%, #ff00ff 83%, #ff0000 100%);
    background: -o-linear-gradient(top, #ff0000 0%, #ffff00 17%, #00ff00 33%, #00ffff 50%, #0000ff 67%, #ff00ff 83%, #ff0000 100%);
    background: -webkit-gradient(linear, left top, left bottom, from(#ff0000), color-stop(0.17, #ffff00), color-stop(0.33, #00ff00), color-stop(0.5, #00ffff), color-stop(0.67, #0000ff), color-stop(0.83, #ff00ff), to(#ff0000));
    background: -webkit-linear-gradient(top, #ff0000 0%, #ffff00 17%, #00ff00 33%, #00ffff 50%, #0000ff 67%, #ff00ff 83%, #ff0000 100%);
    background: linear-gradient(to bottom, #ff0000 0%, #ffff00 17%, #00ff00 33%, #00ffff 50%, #0000ff 67%, #ff00ff 83%, #ff0000 100%);
}

.sp-sat {
    -ms-filter: "progid:DXImageTransform.Microsoft.gradient(GradientType = 1, startColorstr=#FFFFFFFF, endColorstr=#00CC9A81)";
    filter : progid:DXImageTransform.Microsoft.gradient(GradientType = 1, startColorstr='#FFFFFFFF', endColorstr='#00CC9A81');
}
.sp-val {
    -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#00CC9A81, endColorstr=#FF000000)";
    filter : progid:DXImageTransform.Microsoft.gradient(startColorstr='#00CC9A81', endColorstr='#FF000000');
}

.sp-hue {
    background: -moz-linear-gradient(top, #ff0000 0%, #ffff00 17%, #00ff00 33%, #00ffff 50%, #0000ff 67%, #ff00ff 83%, #ff0000 100%);
    background: -ms-linear-gradient(top, #ff0000 0%, #ffff00 17%, #00ff00 33%, #00ffff 50%, #0000ff 67%, #ff00ff 83%, #ff0000 100%);
    background: -o-linear-gradient(top, #ff0000 0%, #ffff00 17%, #00ff00 33%, #00ffff 50%, #0000ff 67%, #ff00ff 83%, #ff0000 100%);
    background: -webkit-gradient(linear, left top, left bottom, from(#ff0000), color-stop(0.17, #ffff00), color-stop(0.33, #00ff00), color-stop(0.5, #00ffff), color-stop(0.67, #0000ff), color-stop(0.83, #ff00ff), to(#ff0000));
    background: -webkit-linear-gradient(top, #ff0000 0%, #ffff00 17%, #00ff00 33%, #00ffff 50%, #0000ff 67%, #ff00ff 83%, #ff0000 100%);
    background: linear-gradient(to bottom, #ff0000 0%, #ffff00 17%, #00ff00 33%, #00ffff 50%, #0000ff 67%, #ff00ff 83%, #ff0000 100%);
}

// starts crashing here occasionally

.sp-sat {
    -ms-filter: "progid:DXImageTransform.Microsoft.gradient(GradientType = 1, startColorstr=#FFFFFFFF, endColorstr=#00CC9A81)";
    filter : progid:DXImageTransform.Microsoft.gradient(GradientType = 1, startColorstr='#FFFFFFFF', endColorstr='#00CC9A81');
}
.sp-val {
    -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#00CC9A81, endColorstr=#FF000000)";
    filter : progid:DXImageTransform.Microsoft.gradient(startColorstr='#00CC9A81', endColorstr='#FF000000');
}

.sp-hue {
    background: -moz-linear-gradient(top, #ff0000 0%, #ffff00 17%, #00ff00 33%, #00ffff 50%, #0000ff 67%, #ff00ff 83%, #ff0000 100%);
    background: -ms-linear-gradient(top, #ff0000 0%, #ffff00 17%, #00ff00 33%, #00ffff 50%, #0000ff 67%, #ff00ff 83%, #ff0000 100%);
    background: -o-linear-gradient(top, #ff0000 0%, #ffff00 17%, #00ff00 33%, #00ffff 50%, #0000ff 67%, #ff00ff 83%, #ff0000 100%);
    background: -webkit-gradient(linear, left top, left bottom, from(#ff0000), color-stop(0.17, #ffff00), color-stop(0.33, #00ff00), color-stop(0.5, #00ffff), color-stop(0.67, #0000ff), color-stop(0.83, #ff00ff), to(#ff0000));
    background: -webkit-linear-gradient(top, #ff0000 0%, #ffff00 17%, #00ff00 33%, #00ffff 50%, #0000ff 67%, #ff00ff 83%, #ff0000 100%);
    background: linear-gradient(to bottom, #ff0000 0%, #ffff00 17%, #00ff00 33%, #00ffff 50%, #0000ff 67%, #ff00ff 83%, #ff0000 100%);
}

.sp-sat {
    -ms-filter: "progid:DXImageTransform.Microsoft.gradient(GradientType = 1, startColorstr=#FFFFFFFF, endColorstr=#00CC9A81)";
    filter : progid:DXImageTransform.Microsoft.gradient(GradientType = 1, startColorstr='#FFFFFFFF', endColorstr='#00CC9A81');
}
.sp-val {
    -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#00CC9A81, endColorstr=#FF000000)";
    filter : progid:DXImageTransform.Microsoft.gradient(startColorstr='#00CC9A81', endColorstr='#FF000000');
}

.sp-hue {
    background: -moz-linear-gradient(top, #ff0000 0%, #ffff00 17%, #00ff00 33%, #00ffff 50%, #0000ff 67%, #ff00ff 83%, #ff0000 100%);
    background: -ms-linear-gradient(top, #ff0000 0%, #ffff00 17%, #00ff00 33%, #00ffff 50%, #0000ff 67%, #ff00ff 83%, #ff0000 100%);
    background: -o-linear-gradient(top, #ff0000 0%, #ffff00 17%, #00ff00 33%, #00ffff 50%, #0000ff 67%, #ff00ff 83%, #ff0000 100%);
    background: -webkit-gradient(linear, left top, left bottom, from(#ff0000), color-stop(0.17, #ffff00), color-stop(0.33, #00ff00), color-stop(0.5, #00ffff), color-stop(0.67, #0000ff), color-stop(0.83, #ff00ff), to(#ff0000));
    background: -webkit-linear-gradient(top, #ff0000 0%, #ffff00 17%, #00ff00 33%, #00ffff 50%, #0000ff 67%, #ff00ff 83%, #ff0000 100%);
    background: linear-gradient(to bottom, #ff0000 0%, #ffff00 17%, #00ff00 33%, #00ffff 50%, #0000ff 67%, #ff00ff 83%, #ff0000 100%);
}

.sp-sat {
    -ms-filter: "progid:DXImageTransform.Microsoft.gradient(GradientType = 1, startColorstr=#FFFFFFFF, endColorstr=#00CC9A81)";
    filter : progid:DXImageTransform.Microsoft.gradient(GradientType = 1, startColorstr='#FFFFFFFF', endColorstr='#00CC9A81');
}
.sp-val {
    -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#00CC9A81, endColorstr=#FF000000)";
    filter : progid:DXImageTransform.Microsoft.gradient(startColorstr='#00CC9A81', endColorstr='#FF000000');
}

.sp-hue {
    background: -moz-linear-gradient(top, #ff0000 0%, #ffff00 17%, #00ff00 33%, #00ffff 50%, #0000ff 67%, #ff00ff 83%, #ff0000 100%);
    background: -ms-linear-gradient(top, #ff0000 0%, #ffff00 17%, #00ff00 33%, #00ffff 50%, #0000ff 67%, #ff00ff 83%, #ff0000 100%);
    background: -o-linear-gradient(top, #ff0000 0%, #ffff00 17%, #00ff00 33%, #00ffff 50%, #0000ff 67%, #ff00ff 83%, #ff0000 100%);
    background: -webkit-gradient(linear, left top, left bottom, from(#ff0000), color-stop(0.17, #ffff00), color-stop(0.33, #00ff00), color-stop(0.5, #00ffff), color-stop(0.67, #0000ff), color-stop(0.83, #ff00ff), to(#ff0000));
    background: -webkit-linear-gradient(top, #ff0000 0%, #ffff00 17%, #00ff00 33%, #00ffff 50%, #0000ff 67%, #ff00ff 83%, #ff0000 100%);
    background: linear-gradient(to bottom, #ff0000 0%, #ffff00 17%, #00ff00 33%, #00ffff 50%, #0000ff 67%, #ff00ff 83%, #ff0000 100%);
}

// crashes every compile

.sp-sat {
    -ms-filter: "progid:DXImageTransform.Microsoft.gradient(GradientType = 1, startColorstr=#FFFFFFFF, endColorstr=#00CC9A81)";
    filter : progid:DXImageTransform.Microsoft.gradient(GradientType = 1, startColorstr='#FFFFFFFF', endColorstr='#00CC9A81');
}
.sp-val {
    -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#00CC9A81, endColorstr=#FF000000)";
    filter : progid:DXImageTransform.Microsoft.gradient(startColorstr='#00CC9A81', endColorstr='#FF000000');
}

.sp-hue {
    background: -moz-linear-gradient(top, #ff0000 0%, #ffff00 17%, #00ff00 33%, #00ffff 50%, #0000ff 67%, #ff00ff 83%, #ff0000 100%);
    background: -ms-linear-gradient(top, #ff0000 0%, #ffff00 17%, #00ff00 33%, #00ffff 50%, #0000ff 67%, #ff00ff 83%, #ff0000 100%);
    background: -o-linear-gradient(top, #ff0000 0%, #ffff00 17%, #00ff00 33%, #00ffff 50%, #0000ff 67%, #ff00ff 83%, #ff0000 100%);
    background: -webkit-gradient(linear, left top, left bottom, from(#ff0000), color-stop(0.17, #ffff00), color-stop(0.33, #00ff00), color-stop(0.5, #00ffff), color-stop(0.67, #0000ff), color-stop(0.83, #ff00ff), to(#ff0000));
    background: -webkit-linear-gradient(top, #ff0000 0%, #ffff00 17%, #00ff00 33%, #00ffff 50%, #0000ff 67%, #ff00ff 83%, #ff0000 100%);
    background: linear-gradient(to bottom, #ff0000 0%, #ffff00 17%, #00ff00 33%, #00ffff 50%, #0000ff 67%, #ff00ff 83%, #ff0000 100%);
}

Gruntfile.js

module.exports = function(grunt) {

  var SegfaultHandler = require('segfault-handler');

  SegfaultHandler.registerHandler("crash.log");

  grunt.initConfig({
    sass: {
      options: {
        includePaths: [
          'assets/vendor'
        ]
      },
      dev: {
        files: [{
          expand: true,
          src: ['*.scss'],
          dest: 'dist/css/',
          ext: '.css'
        }]
      }
    }
  });

  grunt.loadNpmTasks('grunt-sass');

};

invalid.scss

fnord

@import 'colors';

valid.scss

@import 'colors';