[INFO] fetching crate graphbench 0.1.7...
[INFO] checking graphbench-0.1.7 against try#24cd45d7714ba43afd4b8e62fb677b069b21c4a5 for pr-129543
[INFO] extracting crate graphbench 0.1.7 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate graphbench 0.1.7 on toolchain 24cd45d7714ba43afd4b8e62fb677b069b21c4a5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-0-tc2/source/.cargo/config.toml
[INFO] started tweaking crates.io crate graphbench 0.1.7
[INFO] finished tweaking crates.io crate graphbench 0.1.7
[INFO] tweaked toml for crates.io crate graphbench 0.1.7 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 24 packages to latest compatible versions
[INFO] [stderr]       Adding itertools v0.9.0 (latest: v0.13.0)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.2+wasi-0.2.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 903171b071a37d9ab487b4e6bd4d28eb7fd84b70ca4d887da46496a950d1f5d6
[INFO] running `Command { std: "docker" "start" "-a" "903171b071a37d9ab487b4e6bd4d28eb7fd84b70ca4d887da46496a950d1f5d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "903171b071a37d9ab487b4e6bd4d28eb7fd84b70ca4d887da46496a950d1f5d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "903171b071a37d9ab487b4e6bd4d28eb7fd84b70ca4d887da46496a950d1f5d6", kill_on_drop: false }`
[INFO] [stdout] 903171b071a37d9ab487b4e6bd4d28eb7fd84b70ca4d887da46496a950d1f5d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] babe654603d87b1d71d2fd25fdc3b1c75666c51e48378bb73caba07704967332
[INFO] running `Command { std: "docker" "start" "-a" "babe654603d87b1d71d2fd25fdc3b1c75666c51e48378bb73caba07704967332", kill_on_drop: false }`
[INFO] [stderr]     Checking adler2 v2.0.0
[INFO] [stderr]     Checking union-find-rs v0.2.1
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]     Checking miniz_oxide v0.8.0
[INFO] [stderr]     Checking flate2 v1.0.33
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking graphbench v0.1.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ordgraph.rs:142:21
[INFO] [stdout]     |
[INFO] [stdout] 142 |                 let mut n = &mut self.nodes[old_i];
[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] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ordgraph.rs:142:21
[INFO] [stdout]     |
[INFO] [stdout] 142 |                 let mut n = &mut self.nodes[old_i];
[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` profile [unoptimized + debuginfo] target(s) in 3.99s
[INFO] running `Command { std: "docker" "inspect" "babe654603d87b1d71d2fd25fdc3b1c75666c51e48378bb73caba07704967332", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "babe654603d87b1d71d2fd25fdc3b1c75666c51e48378bb73caba07704967332", kill_on_drop: false }`
[INFO] [stdout] babe654603d87b1d71d2fd25fdc3b1c75666c51e48378bb73caba07704967332