[INFO] fetching crate contour_tracing 1.0.12...
[INFO] checking contour_tracing-1.0.12 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] extracting crate contour_tracing 1.0.12 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate contour_tracing 1.0.12
[INFO] finished tweaking crates.io crate contour_tracing 1.0.12
[INFO] tweaked toml for crates.io crate contour_tracing 1.0.12 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate contour_tracing 1.0.12 on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 33 packages to latest compatible versions
[INFO] [stderr]       Adding image v0.24.9 (available: v0.25.6)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4be5666b750507542125dadb71c012d0c6adde5c2a63782b4a08c98edf4a931b
[INFO] running `Command { std: "docker" "start" "-a" "4be5666b750507542125dadb71c012d0c6adde5c2a63782b4a08c98edf4a931b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4be5666b750507542125dadb71c012d0c6adde5c2a63782b4a08c98edf4a931b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4be5666b750507542125dadb71c012d0c6adde5c2a63782b4a08c98edf4a931b", kill_on_drop: false }`
[INFO] [stdout] 4be5666b750507542125dadb71c012d0c6adde5c2a63782b4a08c98edf4a931b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0f2f9fbc15dc9c5c08507b3e0cd3610a442805d158c2620b2b90c4c9f8ec3198
[INFO] running `Command { std: "docker" "start" "-a" "0f2f9fbc15dc9c5c08507b3e0cd3610a442805d158c2620b2b90c4c9f8ec3198", kill_on_drop: false }`
[INFO] [stderr]     Checking contour_tracing v1.0.12 (/opt/rustwide/workdir)
[INFO] [stdout] warning: constant `MN` is never used
[INFO] [stdout]   --> src/lib.rs:28:7
[INFO] [stdout]    |
[INFO] [stdout] 28 | const MN: [(i8, i8); 8] = [(0, -1), (1, -1), (1, 0), (1, 1), (0, 1), (-1, 1), (-1, 0), (-1, -1)]; // Moore neighborhood
[INFO] [stdout]    |       ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MN` is never used
[INFO] [stdout]   --> src/lib.rs:28:7
[INFO] [stdout]    |
[INFO] [stdout] 28 | const MN: [(i8, i8); 8] = [(0, -1), (1, -1), (1, 0), (1, 1), (0, 1), (-1, 1), (-1, 0), (-1, -1)]; // Moore neighborhood
[INFO] [stdout]    |       ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "0f2f9fbc15dc9c5c08507b3e0cd3610a442805d158c2620b2b90c4c9f8ec3198", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f2f9fbc15dc9c5c08507b3e0cd3610a442805d158c2620b2b90c4c9f8ec3198", kill_on_drop: false }`
[INFO] [stdout] 0f2f9fbc15dc9c5c08507b3e0cd3610a442805d158c2620b2b90c4c9f8ec3198