[INFO] fetching crate asciicker-rs 0.0.4...
[INFO] checking asciicker-rs-0.0.4 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate asciicker-rs 0.0.4 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate asciicker-rs 0.0.4 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate asciicker-rs 0.0.4
[INFO] finished tweaking crates.io crate asciicker-rs 0.0.4
[INFO] tweaked toml for crates.io crate asciicker-rs 0.0.4 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate asciicker-rs 0.0.4 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded macro_rules_attribute v0.0.2
[INFO] [stderr]   Downloaded tokio-tungstenite v0.16.1
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[INFO] [stdout] b76ce89ce205831eac7c941068a81dadd41aef55fa9ef99f4eb059720c964ec0
[INFO] running `Command { std: "docker" "start" "-a" "b76ce89ce205831eac7c941068a81dadd41aef55fa9ef99f4eb059720c964ec0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b76ce89ce205831eac7c941068a81dadd41aef55fa9ef99f4eb059720c964ec0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b76ce89ce205831eac7c941068a81dadd41aef55fa9ef99f4eb059720c964ec0", kill_on_drop: false }`
[INFO] [stdout] b76ce89ce205831eac7c941068a81dadd41aef55fa9ef99f4eb059720c964ec0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dd491db1afeec94fd81bee99c2e6ad91b1d2c747a2b0b6181359d694d01cc62e
[INFO] running `Command { std: "docker" "start" "-a" "dd491db1afeec94fd81bee99c2e6ad91b1d2c747a2b0b6181359d694d01cc62e", kill_on_drop: false }`
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[INFO] [stderr]     Checking asciicker-rs v0.0.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/y6/bot.rs:204:17
[INFO] [stdout]     |
[INFO] [stdout] 204 |             let mut client = match world.clients.iter_mut().find(|c| c.id == pose_brc.id) {
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/y6/bot.rs:204:17
[INFO] [stdout]     |
[INFO] [stdout] 204 |             let mut client = match world.clients.iter_mut().find(|c| c.id == pose_brc.id) {
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/y6_echo_bot.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     sender.send(talk_brc.str.into_string().unwrap());
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let _ = sender.send(talk_brc.str.into_string().unwrap());
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 25.58s
[INFO] running `Command { std: "docker" "inspect" "dd491db1afeec94fd81bee99c2e6ad91b1d2c747a2b0b6181359d694d01cc62e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd491db1afeec94fd81bee99c2e6ad91b1d2c747a2b0b6181359d694d01cc62e", kill_on_drop: false }`
[INFO] [stdout] dd491db1afeec94fd81bee99c2e6ad91b1d2c747a2b0b6181359d694d01cc62e