Multi-line Comment Error - Less Clean CSS

gulpfile.js

var gulp = require("gulp");
var less = require("gulp-less");
var LessPluginCleanCSS = require("less-plugin-clean-css");
var sourcemaps = require("gulp-sourcemaps");

gulp.task("less", function () {
    var cleanCss = new LessPluginCleanCSS({});

  return gulp.src("main.less")
      .pipe(sourcemaps.init())
      .pipe(less({plugins: [cleanCss]}))
      .pipe(sourcemaps.write("./"))
      .pipe(gulp.dest("dist/"));
});

main.less

/*
Test
*/
.test {color:red;}

output

$ gulp less
[13:19:50] Using gulpfile c:\Development\gulp-test\gulpfile.js
[13:19:50] Starting 'less'...
Potentially unhandled rejection [2] Error: ENOENT, open 'c:\Development\gulp-test\$stdin'
    at Error (native)

package.json

{
  "name": "gulp-test",
  "version": "1.0.0",
  "devDependencies": {
    "gulp": "3.9.0",
    "gulp-less": "3.0.3",
    "gulp-sourcemaps": "1.5.2",
    "less-plugin-clean-css": "1.5.0"
  }
}