[INFO] cloning repository https://github.com/haishenming/learn_rust_the_hard_way
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/haishenming/learn_rust_the_hard_way" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhaishenming%2Flearn_rust_the_hard_way", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhaishenming%2Flearn_rust_the_hard_way'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 50d153259cd5c3aa51b519cfd9d2b6775448ece3
[INFO] checking haishenming/learn_rust_the_hard_way against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhaishenming%2Flearn_rust_the_hard_way" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/haishenming/learn_rust_the_hard_way on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/haishenming/learn_rust_the_hard_way
[INFO] finished tweaking git repo https://github.com/haishenming/learn_rust_the_hard_way
[INFO] tweaked toml for git repo https://github.com/haishenming/learn_rust_the_hard_way written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/haishenming/learn_rust_the_hard_way already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 24090f12b088f7920c8326ac311acc25fc4da10b5392f2edd89a5fae820dba27
[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" "24090f12b088f7920c8326ac311acc25fc4da10b5392f2edd89a5fae820dba27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "24090f12b088f7920c8326ac311acc25fc4da10b5392f2edd89a5fae820dba27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24090f12b088f7920c8326ac311acc25fc4da10b5392f2edd89a5fae820dba27", kill_on_drop: false }`
[INFO] [stdout] 24090f12b088f7920c8326ac311acc25fc4da10b5392f2edd89a5fae820dba27
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6d0f35cd5cea3f1db1d65f68e7c9fb3768f283cc2514f9441e3c0bfade7d2973
[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" "6d0f35cd5cea3f1db1d65f68e7c9fb3768f283cc2514f9441e3c0bfade7d2973", kill_on_drop: false }`
[INFO] [stderr]     Checking learn_rust_the_hard_way v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "6d0f35cd5cea3f1db1d65f68e7c9fb3768f283cc2514f9441e3c0bfade7d2973", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d0f35cd5cea3f1db1d65f68e7c9fb3768f283cc2514f9441e3c0bfade7d2973", kill_on_drop: false }`
[INFO] [stdout] 6d0f35cd5cea3f1db1d65f68e7c9fb3768f283cc2514f9441e3c0bfade7d2973