[INFO] fetching crate mini-matrix 0.1.6...
[INFO] checking mini-matrix-0.1.6 against try#24cd45d7714ba43afd4b8e62fb677b069b21c4a5 for pr-129543
[INFO] extracting crate mini-matrix 0.1.6 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate mini-matrix 0.1.6 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] started tweaking crates.io crate mini-matrix 0.1.6
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate mini-matrix 0.1.6
[INFO] tweaked toml for crates.io crate mini-matrix 0.1.6 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate crates.io crate mini-matrix 0.1.6 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" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 82383295e760f911b98f20430ce663a64b989f338451b195d96b8988a61adea0
[INFO] running `Command { std: "docker" "start" "-a" "82383295e760f911b98f20430ce663a64b989f338451b195d96b8988a61adea0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "82383295e760f911b98f20430ce663a64b989f338451b195d96b8988a61adea0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82383295e760f911b98f20430ce663a64b989f338451b195d96b8988a61adea0", kill_on_drop: false }`
[INFO] [stdout] 82383295e760f911b98f20430ce663a64b989f338451b195d96b8988a61adea0
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 94b6c66d9cace5fb6e20c0cbffe68ac3e917818b44194a9f76edd00c9c7e5cc8
[INFO] running `Command { std: "docker" "start" "-a" "94b6c66d9cace5fb6e20c0cbffe68ac3e917818b44194a9f76edd00c9c7e5cc8", kill_on_drop: false }`
[INFO] [stderr]     Checking mini-matrix v0.1.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `pivot` is never read
[INFO] [stdout]    --> src/matrix.rs:729:25
[INFO] [stdout]     |
[INFO] [stdout] 729 |                         pivot = pivot - 1;
[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 `pivot` is never read
[INFO] [stdout]    --> src/matrix.rs:729:25
[INFO] [stdout]     |
[INFO] [stdout] 729 |                         pivot = pivot - 1;
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.88s
[INFO] running `Command { std: "docker" "inspect" "94b6c66d9cace5fb6e20c0cbffe68ac3e917818b44194a9f76edd00c9c7e5cc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94b6c66d9cace5fb6e20c0cbffe68ac3e917818b44194a9f76edd00c9c7e5cc8", kill_on_drop: false }`
[INFO] [stdout] 94b6c66d9cace5fb6e20c0cbffe68ac3e917818b44194a9f76edd00c9c7e5cc8