[INFO] fetching crate slack-summarizer 0.1.2...
[INFO] checking slack-summarizer-0.1.2 against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608-1
[INFO] extracting crate slack-summarizer 0.1.2 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate slack-summarizer 0.1.2
[INFO] finished tweaking crates.io crate slack-summarizer 0.1.2
[INFO] tweaked toml for crates.io crate slack-summarizer 0.1.2 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate slack-summarizer 0.1.2 on toolchain c659ee110de67e82444e4b6c8407c1a9af9c2cf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate slack-summarizer 0.1.2 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" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8ead926183619ee211c505358a9fba5eac3e00999c510be06a36281dc6e21f30
[INFO] running `Command { std: "docker" "start" "-a" "8ead926183619ee211c505358a9fba5eac3e00999c510be06a36281dc6e21f30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8ead926183619ee211c505358a9fba5eac3e00999c510be06a36281dc6e21f30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ead926183619ee211c505358a9fba5eac3e00999c510be06a36281dc6e21f30", kill_on_drop: false }`
[INFO] [stdout] 8ead926183619ee211c505358a9fba5eac3e00999c510be06a36281dc6e21f30
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 48c1c97e2abae476f850a0a6b1c7d651cb9218f8ccd5a814f3c6f8feba1edf61
[INFO] running `Command { std: "docker" "start" "-a" "48c1c97e2abae476f850a0a6b1c7d651cb9218f8ccd5a814f3c6f8feba1edf61", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.162
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[INFO] [stderr]     Checking toml v0.8.19
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[INFO] [stderr]     Checking slack-summarizer v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `channels` is never read
[INFO] [stdout]   --> src/main.rs:97:13
[INFO] [stdout]    |
[INFO] [stdout] 97 |     let mut channels: HashMap<String, String> = HashMap::new();
[INFO] [stdout]    |             ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `channels` is never read
[INFO] [stdout]   --> src/main.rs:97:13
[INFO] [stdout]    |
[INFO] [stdout] 97 |     let mut channels: HashMap<String, String> = HashMap::new();
[INFO] [stdout]    |             ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 47.23s
[INFO] running `Command { std: "docker" "inspect" "48c1c97e2abae476f850a0a6b1c7d651cb9218f8ccd5a814f3c6f8feba1edf61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48c1c97e2abae476f850a0a6b1c7d651cb9218f8ccd5a814f3c6f8feba1edf61", kill_on_drop: false }`
[INFO] [stdout] 48c1c97e2abae476f850a0a6b1c7d651cb9218f8ccd5a814f3c6f8feba1edf61