[INFO] fetching crate axb 0.1.4...
[INFO] checking axb-0.1.4 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] extracting crate axb 0.1.4 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate axb 0.1.4
[INFO] finished tweaking crates.io crate axb 0.1.4
[INFO] tweaked toml for crates.io crate axb 0.1.4 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate axb 0.1.4 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] crate crates.io crate axb 0.1.4 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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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] ad57053c3d8d1f88a431b0be6d8108f17612dcd90afe03b009b7d088d93027a0
[INFO] running `Command { std: "docker" "start" "-a" "ad57053c3d8d1f88a431b0be6d8108f17612dcd90afe03b009b7d088d93027a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad57053c3d8d1f88a431b0be6d8108f17612dcd90afe03b009b7d088d93027a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad57053c3d8d1f88a431b0be6d8108f17612dcd90afe03b009b7d088d93027a0", kill_on_drop: false }`
[INFO] [stdout] ad57053c3d8d1f88a431b0be6d8108f17612dcd90afe03b009b7d088d93027a0
[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] 8d96480060c1eac9c6ef0719d79aa632b4d0cd72990a1f6914b7c7d0e7e51cac
[INFO] running `Command { std: "docker" "start" "-a" "8d96480060c1eac9c6ef0719d79aa632b4d0cd72990a1f6914b7c7d0e7e51cac", kill_on_drop: false }`
[INFO] [stderr]     Checking axb v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `non_square_matrix_error` is never used
[INFO] [stdout]  --> src/matrix/errors.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn non_square_matrix_error(r: &usize, c: &usize) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `non_square_matrix_error` is never used
[INFO] [stdout]  --> src/matrix/errors.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn non_square_matrix_error(r: &usize, c: &usize) {
[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 0.47s
[INFO] running `Command { std: "docker" "inspect" "8d96480060c1eac9c6ef0719d79aa632b4d0cd72990a1f6914b7c7d0e7e51cac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d96480060c1eac9c6ef0719d79aa632b4d0cd72990a1f6914b7c7d0e7e51cac", kill_on_drop: false }`
[INFO] [stdout] 8d96480060c1eac9c6ef0719d79aa632b4d0cd72990a1f6914b7c7d0e7e51cac