tests/acceptance/crate: Use async/await
tests/acceptance/crate: Use async/await

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