Use container-based infrastructure on Travis

[ngryman]

Hey,

I'm just sharing my experience on the subject because I had a hard time making things work on Travis for Speed Racer. I basically took a lot of inspiration on what you do (thanks for that btw).

I'm just wondering why you would need sudo?

[ngryman]

If it was because trusty was not available container-based, it's now available: https://blog.travis-ci.com/2016-11-08-trusty-container-public-beta/?utm_source=trusty-container-based-beta-notice&utm_medium=banner&utm_campaign=trusty-container-based-beta.

[paulirish]

I'm just wondering why you would need sudo?
If it was because trusty was not available container-based,

Yup looks like that's right: #264

[wardpeet]

i believe this is fixed via 5945332