Auto merge of #5507 - ordovicia:no-secs-frac, r=matklad
Auto merge of #5507 - ordovicia:no-secs-frac, r=matklad

Does not print seconds fraction with minutes

As discussed in https://github.com/rust-lang/cargo/pull/5456#issuecomment-387731047,
seconds fraction seems unnecessary when the elapsed time is reported in minutes.

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