Revert "Switch travis to container mode"
Revert "Switch travis to container mode"

daa84/gtk,gkoz/rust-gnome-gtk,rust-gnome/gtk,daa84/gtk,mitaa/gtk,gkoz/gtk-rs-gtk,EPashkin/rust-gnome-gtk,Susurrus/gtk,gkoz/gtk-rs-gtk,rust-gnome/gtk,LordSentox/gtk,insanebits/gtk,drewet/gtk,LordSentox/gtk,gkoz/rust-gnome-gtk,Susurrus/gtk,drewet/gtk,EPashkin/rust-gnome-gtk,insanebits/gtk,mitaa/gtk