[INFO] fetching crate tls-async 0.3.0-alpha.7...
[INFO] building tls-async-0.3.0-alpha.7 against master#ff34b919075f35a1787659e9c448a34b06bab8de for issue-85264
[INFO] extracting crate tls-async 0.3.0-alpha.7 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate tls-async 0.3.0-alpha.7 on toolchain ff34b919075f35a1787659e9c448a34b06bab8de
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tls-async 0.3.0-alpha.7
[INFO] finished tweaking crates.io crate tls-async 0.3.0-alpha.7
[INFO] tweaked toml for crates.io crate tls-async 0.3.0-alpha.7 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0bbdd730195be09c11ac6c76ac81b2389218d7e09905d16c2695d6b344d3e04f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0bbdd730195be09c11ac6c76ac81b2389218d7e09905d16c2695d6b344d3e04f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0bbdd730195be09c11ac6c76ac81b2389218d7e09905d16c2695d6b344d3e04f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0bbdd730195be09c11ac6c76ac81b2389218d7e09905d16c2695d6b344d3e04f", kill_on_drop: false }`
[INFO] [stdout] 0bbdd730195be09c11ac6c76ac81b2389218d7e09905d16c2695d6b344d3e04f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 90b0e2b9d73cee907e04671ba3732f059a3c1bbc47ae43ceb7a654669a900f48
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "90b0e2b9d73cee907e04671ba3732f059a3c1bbc47ae43ceb7a654669a900f48", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling futures-core-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling futures v0.1.31
[INFO] [stderr]    Compiling foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling openssl v0.10.34
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling slab v0.4.3
[INFO] [stderr]    Compiling once_cell v1.7.2
[INFO] [stderr]    Compiling native-tls v0.2.7
[INFO] [stderr]    Compiling openssl-probe v0.1.4
[INFO] [stderr]    Compiling foreign-types v0.3.2
[INFO] [stderr]    Compiling futures-channel-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling openssl-sys v0.9.63
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling backtrace v0.3.59
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling tokio-io v0.1.13
[INFO] [stderr]    Compiling futures-util-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling futures-executor-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling futures-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling tls-async v0.3.0-alpha.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `async_await` has been stable since 1.39.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | #![feature(async_await)]
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.21s
[INFO] running `Command { std: "docker" "inspect" "90b0e2b9d73cee907e04671ba3732f059a3c1bbc47ae43ceb7a654669a900f48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90b0e2b9d73cee907e04671ba3732f059a3c1bbc47ae43ceb7a654669a900f48", kill_on_drop: false }`
[INFO] [stdout] 90b0e2b9d73cee907e04671ba3732f059a3c1bbc47ae43ceb7a654669a900f48
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1f0ad028d5af54e15ee84a3590479a42e799a7a4fd38296c8630b0ed9aec33c6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1f0ad028d5af54e15ee84a3590479a42e799a7a4fd38296c8630b0ed9aec33c6", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling async-datagram v3.0.0
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling async-ready v3.0.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling smallvec v0.6.14
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling tokio-codec v0.1.2
[INFO] [stdout] warning: the feature `async_await` has been stable since 1.39.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | #![feature(async_await)]
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling net2 v0.2.37
[INFO] [stderr]    Compiling lock_api v0.3.4
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling tokio-sync v0.1.8
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling env_logger v0.5.13
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling tokio-executor v0.1.10
[INFO] [stderr]    Compiling crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling mio-uds v0.6.8
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling tokio-current-thread v0.1.7
[INFO] [stderr]    Compiling tokio-timer v0.2.13
[INFO] [stderr]    Compiling tokio-threadpool v0.1.18
[INFO] [stderr]    Compiling tokio-fs v0.1.7
[INFO] [stderr]    Compiling tokio-reactor v0.1.12
[INFO] [stderr]    Compiling romio v0.3.0-alpha.10
[INFO] [stderr]    Compiling tokio-udp v0.1.6
[INFO] [stderr]    Compiling tokio-uds v0.2.7
[INFO] [stderr]    Compiling tokio-tcp v0.1.4
[INFO] [stderr]    Compiling tokio v0.1.22
[INFO] [stderr]    Compiling tls-async v0.3.0-alpha.7 (/opt/rustwide/workdir)
[INFO] [stdout] error: incorrect use of `await`
[INFO] [stdout]   --> examples/download-rust-lang.rs:20:22
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let socket = await!(TcpStream::connect(&addr)).expect("Could not connect");
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: `await` is a postfix operation: `TcpStream::connect(&addr).await`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: incorrect use of `await`
[INFO] [stdout]   --> examples/download-rust-lang.rs:23:26
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let mut socket = await!(cx.connect("www.rust-lang.org", socket)).expect("Could not form tls connection");
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: `await` is a postfix operation: `cx.connect("www.rust-lang.org", socket).await`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: incorrect use of `await`
[INFO] [stdout]   --> examples/download-rust-lang.rs:24:17
[INFO] [stdout]    |
[INFO] [stdout] 24 |           let _ = await!(socket.write_all(b"\
[INFO] [stdout]    |  _________________^
[INFO] [stdout] 25 | |             GET / HTTP/1.0\r\n\
[INFO] [stdout] 26 | |             Host: www.rust-lang.org\r\n\
[INFO] [stdout] 27 | |             \r\n\
[INFO] [stdout] 28 | |         "));
[INFO] [stdout]    | |___________^
[INFO] [stdout]    |
[INFO] [stdout] help: `await` is a postfix operation
[INFO] [stdout]    |
[INFO] [stdout] 24 |         let _ = socket.write_all(b"\
[INFO] [stdout] 25 |             GET / HTTP/1.0\r\n\
[INFO] [stdout] 26 |             Host: www.rust-lang.org\r\n\
[INFO] [stdout] 27 |             \r\n\
[INFO] [stdout] 28 |         ").await;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: incorrect use of `await`
[INFO] [stdout]   --> examples/download-rust-lang.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         await!(socket.flush()).expect("Could not flush");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^ help: `await` is a postfix operation: `socket.flush().await`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: incorrect use of `await`
[INFO] [stdout]   --> examples/download-rust-lang.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         await!(socket.read_to_end(&mut vec)).expect("Could not read");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: `await` is a postfix operation: `socket.read_to_end(&mut vec).await`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: incorrect use of `await`
[INFO] [stdout]   --> examples/download-rust-lang.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         await!(socket.close()).expect("Could not close");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^ help: `await` is a postfix operation: `socket.close().await`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> examples/download-rust-lang.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(async_await, await_macro)]
[INFO] [stdout]   |                         ^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: subsumed by `.await` syntax
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `openssl`
[INFO] [stdout]   --> tests/bad.rs:47:13
[INFO] [stdout]    |
[INFO] [stdout] 47 |         use openssl;
[INFO] [stdout]    |             ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ONCE_INIT`, `Once`
[INFO] [stdout]    --> tests/smoke.rs:207:25
[INFO] [stdout]     |
[INFO] [stdout] 207 |         use std::sync::{Once, ONCE_INIT};
[INFO] [stdout]     |                         ^^^^  ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/echo.rs:27:18
[INFO] [stdout]    |
[INFO] [stdout] 27 |             let (mut reader, mut writer) = tls.split();
[INFO] [stdout]    |                  ----^^^^^^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `async_await` has been stable since 1.39.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> examples/echo.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(async_await)]
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> tests/smoke.rs:27:36
[INFO] [stdout]    |
[INFO] [stdout] 27 |     static INIT: std::sync::Once = std::sync::ONCE_INIT;
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated constant: `Once::new()`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> tests/smoke.rs:207:31
[INFO] [stdout]     |
[INFO] [stdout] 207 |         use std::sync::{Once, ONCE_INIT};
[INFO] [stdout]     |                               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `async_await` has been stable since 1.39.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> tests/bad.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(async_await)]
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains an unused formatting placeholder
[INFO] [stdout]   --> tests/bad.rs:15:28
[INFO] [stdout]    |
[INFO] [stdout] 15 |         _ => panic!("Error {:?} was not a handshake error")
[INFO] [stdout]    |                            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]    = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stdout] help: add the missing argument
[INFO] [stdout]    |
[INFO] [stdout] 15 |         _ => panic!("Error {:?} was not a handshake error", ...)
[INFO] [stdout]    |                                                           ^^^^^
[INFO] [stdout] help: or add a "{}" format string to use the message literally
[INFO] [stdout]    |
[INFO] [stdout] 15 |         _ => panic!("{}", "Error {:?} was not a handshake error")
[INFO] [stdout]    |                     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 7 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tls-async`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: the feature `async_await` has been stable since 1.39.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | #![feature(async_await)]
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `async_await` has been stable since 1.39.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> tests/google.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(async_await)]
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains an unused formatting placeholder
[INFO] [stdout]   --> tests/google.rs:16:28
[INFO] [stdout]    |
[INFO] [stdout] 16 |         _ => panic!("Error {:?} was not a handshake error")
[INFO] [stdout]    |                            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]    = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stdout] help: add the missing argument
[INFO] [stdout]    |
[INFO] [stdout] 16 |         _ => panic!("Error {:?} was not a handshake error", ...)
[INFO] [stdout]    |                                                           ^^^^^
[INFO] [stdout] help: or add a "{}" format string to use the message literally
[INFO] [stdout]    |
[INFO] [stdout] 16 |         _ => panic!("{}", "Error {:?} was not a handshake error")
[INFO] [stdout]    |                     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `async_await` has been stable since 1.39.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> tests/smoke.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(async_await)]
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "1f0ad028d5af54e15ee84a3590479a42e799a7a4fd38296c8630b0ed9aec33c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f0ad028d5af54e15ee84a3590479a42e799a7a4fd38296c8630b0ed9aec33c6", kill_on_drop: false }`
[INFO] [stdout] 1f0ad028d5af54e15ee84a3590479a42e799a7a4fd38296c8630b0ed9aec33c6
