Bump diesel to 0.16.0 on travis-ci
Bump diesel to 0.16.0 on travis-ci

rust-lang/crates.io,steveklabnik/crates.io,rust-lang/crates.io,rust-lang/crates.io,steveklabnik/crates.io,steveklabnik/crates.io,rust-lang/crates.io,steveklabnik/crates.io