[INFO] cloning repository https://github.com/elmica/messaging
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/elmica/messaging" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felmica%2Fmessaging", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felmica%2Fmessaging'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 81a8ff98ba1b627c3f789b72fcec43f8fd519c06
[INFO] checking elmica/messaging against try#012cd62c9add58ab3910e44c137d87db3ab70f61 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felmica%2Fmessaging" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/elmica/messaging
[INFO] finished tweaking git repo https://github.com/elmica/messaging
[INFO] tweaked toml for git repo https://github.com/elmica/messaging written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/elmica/messaging on toolchain 012cd62c9add58ab3910e44c137d87db3ab70f61
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/elmica/messaging already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded security-framework-sys v2.14.0
[INFO] [stderr]   Downloaded bitflags v2.9.0
[INFO] [stderr]   Downloaded proc-macro2 v1.0.94
[INFO] [stderr]   Downloaded syn v2.0.100
[INFO] [stderr]   Downloaded rumqttc v0.24.0
[INFO] [stderr]   Downloaded cc v1.2.17
[INFO] [stderr]   Downloaded libc v0.2.171
[INFO] [stderr]   Downloaded tokio v1.44.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b43548249ee8f50244c5a8c96c1c4365bdf9eeec115c512cd85a28f12240667a
[INFO] running `Command { std: "docker" "start" "-a" "b43548249ee8f50244c5a8c96c1c4365bdf9eeec115c512cd85a28f12240667a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b43548249ee8f50244c5a8c96c1c4365bdf9eeec115c512cd85a28f12240667a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b43548249ee8f50244c5a8c96c1c4365bdf9eeec115c512cd85a28f12240667a", kill_on_drop: false }`
[INFO] [stdout] b43548249ee8f50244c5a8c96c1c4365bdf9eeec115c512cd85a28f12240667a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b08dbdd6741655c55159d15b27e37397d816ec092ab72b3b3281392e4085eaa5
[INFO] running `Command { std: "docker" "start" "-a" "b08dbdd6741655c55159d15b27e37397d816ec092ab72b3b3281392e4085eaa5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.171
[INFO] [stderr]    Compiling proc-macro2 v1.0.94
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]     Checking rustls-pki-types v1.11.0
[INFO] [stderr]     Checking untrusted v0.9.0
[INFO] [stderr]    Compiling rustls v0.22.4
[INFO] [stderr]     Checking pin-project-lite v0.2.16
[INFO] [stderr]     Checking zeroize v1.8.1
[INFO] [stderr]     Checking subtle v2.6.1
[INFO] [stderr]     Checking log v0.4.27
[INFO] [stderr]     Checking futures-core v0.3.31
[INFO] [stderr]    Compiling cc v1.2.17
[INFO] [stderr]     Checking futures-sink v0.3.31
[INFO] [stderr]     Checking openssl-probe v0.1.6
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking flume v0.11.1
[INFO] [stderr]     Checking rustls-pemfile v2.2.0
[INFO] [stderr]     Checking rustls-native-certs v0.7.3
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling ring v0.17.14
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking socket2 v0.5.8
[INFO] [stderr]     Checking mio v1.0.3
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]     Checking tokio v1.44.1
[INFO] [stderr]     Checking thiserror v1.0.69
[INFO] [stderr]     Checking rustls-webpki v0.102.8
[INFO] [stderr]     Checking tokio-rustls v0.25.0
[INFO] [stderr]     Checking rumqttc v0.24.0
[INFO] [stderr]     Checking messaging v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Connection`
[INFO] [stdout]  --> src/lib.rs:1:36
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rumqttc::{MqttOptions, Client, Connection, QoS, Event, Packet};
[INFO] [stdout]   |                                    ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:17:10
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let (mut client, mut connection) = Client::new(mqttoptions, 10);
[INFO] [stdout]    |          ----^^^^^^
[INFO] [stdout]    |          |
[INFO] [stdout]    |          help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Connection`
[INFO] [stdout]  --> src/lib.rs:1:36
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rumqttc::{MqttOptions, Client, Connection, QoS, Event, Packet};
[INFO] [stdout]   |                                    ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:17:10
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let (mut client, mut connection) = Client::new(mqttoptions, 10);
[INFO] [stdout]    |          ----^^^^^^
[INFO] [stdout]    |          |
[INFO] [stdout]    |          help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `to_mqtt_tx`
[INFO] [stdout]  --> src/bin/main.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let (to_mqtt_tx, to_mqtt_rx) = std::sync::mpsc::channel(); // Outgoing messages to MQTT
[INFO] [stdout]   |          ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_to_mqtt_tx`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `to_mqtt_tx`
[INFO] [stdout]  --> src/bin/main.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let (to_mqtt_tx, to_mqtt_rx) = std::sync::mpsc::channel(); // Outgoing messages to MQTT
[INFO] [stdout]   |          ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_to_mqtt_tx`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 19.31s
[INFO] running `Command { std: "docker" "inspect" "b08dbdd6741655c55159d15b27e37397d816ec092ab72b3b3281392e4085eaa5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b08dbdd6741655c55159d15b27e37397d816ec092ab72b3b3281392e4085eaa5", kill_on_drop: false }`
[INFO] [stdout] b08dbdd6741655c55159d15b27e37397d816ec092ab72b3b3281392e4085eaa5
