Although separation between stack and tasks is done well, logging for the stacks is not correctly reported.

Steps

1.- write a gulpfile.js like so

var gulp = require('gulp-runtime').create();

gulp.task(':one', function (done) {
  setTimeout(done, 120);
});

gulp.task('default', gulp.series('one', 'two'));

2.- run it

On the command line do node gulpfile.js

Expected

Task logging to be Starting default:series(one, two)

Actual

Task logging is Start default:series(:one, :one)