Stop building on master on Travis.
Stop building on master on Travis.

rustyhorde/cargo,vojtechkral/cargo,tshepang/cargo,tshepang/cargo,eminence/cargo,rustyhorde/cargo,tsurai/cargo,rust-lang/cargo,eminence/cargo,tsurai/cargo,nipunn1313/cargo,eminence/cargo,vojtechkral/cargo,vojtechkral/cargo,tshepang/cargo,vojtechkral/cargo,rust-lang/cargo,nipunn1313/cargo,tshepang/cargo,rustyhorde/cargo,tsurai/cargo,tsurai/cargo,rustyhorde/cargo,tsurai/cargo,rust-lang/cargo,rust-lang/cargo,nipunn1313/cargo,nipunn1313/cargo,eminence/cargo