[INFO] cloning repository https://github.com/tranxuanthang/rust-matrix-multiply
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tranxuanthang/rust-matrix-multiply" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftranxuanthang%2Frust-matrix-multiply", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftranxuanthang%2Frust-matrix-multiply'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b2238e022ae8451254b8e78d9f5eaead26d26b9e
[INFO] checking tranxuanthang/rust-matrix-multiply against master#f82664191d0e8764b7435b9d72eb0e366b8b1464 for pr-83354
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftranxuanthang%2Frust-matrix-multiply" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tranxuanthang/rust-matrix-multiply on toolchain f82664191d0e8764b7435b9d72eb0e366b8b1464
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tranxuanthang/rust-matrix-multiply
[INFO] finished tweaking git repo https://github.com/tranxuanthang/rust-matrix-multiply
[INFO] tweaked toml for git repo https://github.com/tranxuanthang/rust-matrix-multiply written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/tranxuanthang/rust-matrix-multiply already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8df4f0d1976772f633c5856cb86e9c7dfc591245d493b1d442af6075d6385c21
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8df4f0d1976772f633c5856cb86e9c7dfc591245d493b1d442af6075d6385c21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8df4f0d1976772f633c5856cb86e9c7dfc591245d493b1d442af6075d6385c21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8df4f0d1976772f633c5856cb86e9c7dfc591245d493b1d442af6075d6385c21", kill_on_drop: false }`
[INFO] [stdout] 8df4f0d1976772f633c5856cb86e9c7dfc591245d493b1d442af6075d6385c21
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eaedfd8a15b3e4e185f121010ed1520b15f392471c46db128b0e49d2b639358f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "eaedfd8a15b3e4e185f121010ed1520b15f392471c46db128b0e49d2b639358f", kill_on_drop: false }`
[INFO] [stderr]     Checking matrix-multiply v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "eaedfd8a15b3e4e185f121010ed1520b15f392471c46db128b0e49d2b639358f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eaedfd8a15b3e4e185f121010ed1520b15f392471c46db128b0e49d2b639358f", kill_on_drop: false }`
[INFO] [stdout] eaedfd8a15b3e4e185f121010ed1520b15f392471c46db128b0e49d2b639358f