[INFO] fetching crate jmt-blake3 0.1.2...
[INFO] checking jmt-blake3-0.1.2 against master#5518eaa946291f00471af8b254b2a1715f234882 for pr-120393
[INFO] extracting crate jmt-blake3 0.1.2 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate jmt-blake3 0.1.2 on toolchain 5518eaa946291f00471af8b254b2a1715f234882
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate jmt-blake3 0.1.2
[INFO] finished tweaking crates.io crate jmt-blake3 0.1.2
[INFO] tweaked toml for crates.io crate jmt-blake3 0.1.2 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "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" "+5518eaa946291f00471af8b254b2a1715f234882" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bcs v0.1.6
[INFO] [stderr]   Downloaded ics23-blake3 v0.9.1
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[INFO] [stdout] c0ae87556020eb6455c18464d0158babcd900bbb3592850e49d9d79a268ff136
[INFO] running `Command { std: "docker" "start" "-a" "c0ae87556020eb6455c18464d0158babcd900bbb3592850e49d9d79a268ff136", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "rm" "-f" "c0ae87556020eb6455c18464d0158babcd900bbb3592850e49d9d79a268ff136", kill_on_drop: false }`
[INFO] [stdout] c0ae87556020eb6455c18464d0158babcd900bbb3592850e49d9d79a268ff136
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4a83d2fe15cd891113a56bff12995e0ab87aab214ff83795cb9925daeaa4af82
[INFO] running `Command { std: "docker" "start" "-a" "4a83d2fe15cd891113a56bff12995e0ab87aab214ff83795cb9925daeaa4af82", kill_on_drop: false }`
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[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking bcs v0.1.6
[INFO] [stderr]     Checking jmt-blake3 v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/node_type.rs:656:43
[INFO] [stdout]     |
[INFO] [stdout] 656 |         children.iter_mut().for_each(|(_, mut child)| {
[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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.70s
[INFO] running `Command { std: "docker" "inspect" "4a83d2fe15cd891113a56bff12995e0ab87aab214ff83795cb9925daeaa4af82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a83d2fe15cd891113a56bff12995e0ab87aab214ff83795cb9925daeaa4af82", kill_on_drop: false }`
[INFO] [stdout] 4a83d2fe15cd891113a56bff12995e0ab87aab214ff83795cb9925daeaa4af82