[INFO] fetching crate vertx-tcp-eventbus-bridge-client-rust 0.2.0...
[INFO] checking vertx-tcp-eventbus-bridge-client-rust-0.2.0 against master#50e1dc1536264ab71c0850f346b12309477f29f7 for pr-85073
[INFO] extracting crate vertx-tcp-eventbus-bridge-client-rust 0.2.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate vertx-tcp-eventbus-bridge-client-rust 0.2.0 on toolchain 50e1dc1536264ab71c0850f346b12309477f29f7
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate vertx-tcp-eventbus-bridge-client-rust 0.2.0
[INFO] finished tweaking crates.io crate vertx-tcp-eventbus-bridge-client-rust 0.2.0
[INFO] tweaked toml for crates.io crate vertx-tcp-eventbus-bridge-client-rust 0.2.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+50e1dc1536264ab71c0850f346b12309477f29f7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a36e89af5f794cc3fd6c91870237e039d4d271b27c11c2286b05723e8516cf45
[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" "a36e89af5f794cc3fd6c91870237e039d4d271b27c11c2286b05723e8516cf45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a36e89af5f794cc3fd6c91870237e039d4d271b27c11c2286b05723e8516cf45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a36e89af5f794cc3fd6c91870237e039d4d271b27c11c2286b05723e8516cf45", kill_on_drop: false }`
[INFO] [stdout] a36e89af5f794cc3fd6c91870237e039d4d271b27c11c2286b05723e8516cf45
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+50e1dc1536264ab71c0850f346b12309477f29f7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a2fd0837c94427c39ce8581de82caf3fddf54bca9c127b2374364b323c3afaa4
[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" "a2fd0837c94427c39ce8581de82caf3fddf54bca9c127b2374364b323c3afaa4", kill_on_drop: false }`
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking crossbeam v0.3.2
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking tokio-codec v0.1.2
[INFO] [stderr]     Checking tokio-fs v0.1.7
[INFO] [stderr]     Checking tokio-uds v0.2.7
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking tokio-udp v0.1.6
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking vertx-tcp-eventbus-bridge-client-rust v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/lib.rs:55:72
[INFO] [stdout]    |
[INFO] [stdout] 55 |             tokio::spawn(readstream.into_future().map(|_| ()).map_err(|e| ()));
[INFO] [stdout]    |                                                                        ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/lib.rs:56:73
[INFO] [stdout]    |
[INFO] [stdout] 56 |             tokio::spawn(writestream.into_future().map(|_| ()).map_err(|e| ()));
[INFO] [stdout]    |                                                                         ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/lib.rs:68:34
[INFO] [stdout]    |
[INFO] [stdout] 68 |         tokio::run(task.map_err(|e| ()));
[INFO] [stdout]    |                                  ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.18s
[INFO] running `Command { std: "docker" "inspect" "a2fd0837c94427c39ce8581de82caf3fddf54bca9c127b2374364b323c3afaa4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2fd0837c94427c39ce8581de82caf3fddf54bca9c127b2374364b323c3afaa4", kill_on_drop: false }`
[INFO] [stdout] a2fd0837c94427c39ce8581de82caf3fddf54bca9c127b2374364b323c3afaa4