[INFO] fetching crate rumqtt 0.31.0...
[INFO] checking rumqtt-0.31.0 against try#024378d9203a4009ed73d6db2681b88a8d74ce7a for pr-112160
[INFO] extracting crate rumqtt 0.31.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate rumqtt 0.31.0 on toolchain 024378d9203a4009ed73d6db2681b88a8d74ce7a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rumqtt 0.31.0
[INFO] finished tweaking crates.io crate rumqtt 0.31.0
[INFO] tweaked toml for crates.io crate rumqtt 0.31.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6221e06e94770f0b7166508e967bbe978bf533fc15d5f99f4be3990c331c9673
[INFO] running `Command { std: "docker" "start" "-a" "6221e06e94770f0b7166508e967bbe978bf533fc15d5f99f4be3990c331c9673", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6221e06e94770f0b7166508e967bbe978bf533fc15d5f99f4be3990c331c9673", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6221e06e94770f0b7166508e967bbe978bf533fc15d5f99f4be3990c331c9673", kill_on_drop: false }`
[INFO] [stdout] 6221e06e94770f0b7166508e967bbe978bf533fc15d5f99f4be3990c331c9673
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b6691901e68b9d01760640769a8e5a53fcc1ef6251d7f8f741fc8fda937a9113
[INFO] running `Command { std: "docker" "start" "-a" "b6691901e68b9d01760640769a8e5a53fcc1ef6251d7f8f741fc8fda937a9113", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
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[INFO] [stderr]     Checking futures v0.1.31
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[INFO] [stderr]     Checking bytes v0.4.12
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[INFO] [stderr]     Checking rumqtt v0.31.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> examples/tls.rs:25:38
[INFO] [stdout]    |
[INFO] [stdout] 25 |             mqtt_client.publish(topic.clone(), QoS::AtLeastOnce, false, payload).unwrap();
[INFO] [stdout]    |                                      ^^^^^^^^ unnecessary method call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[deny(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rumqtt` (example "tls") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "b6691901e68b9d01760640769a8e5a53fcc1ef6251d7f8f741fc8fda937a9113", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6691901e68b9d01760640769a8e5a53fcc1ef6251d7f8f741fc8fda937a9113", kill_on_drop: false }`
[INFO] [stdout] b6691901e68b9d01760640769a8e5a53fcc1ef6251d7f8f741fc8fda937a9113