[INFO] cloning repository https://github.com/valmiki20/rust_learn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/valmiki20/rust_learn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvalmiki20%2Frust_learn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvalmiki20%2Frust_learn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5f89dc3948be9320d79748a9c161ee4846651b77
[INFO] checking valmiki20/rust_learn against master#a836d9b6413d9d593be6c09463ff8c4c70e56599 for pr-84037
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvalmiki20%2Frust_learn" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/valmiki20/rust_learn on toolchain a836d9b6413d9d593be6c09463ff8c4c70e56599
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/valmiki20/rust_learn
[INFO] finished tweaking git repo https://github.com/valmiki20/rust_learn
[INFO] tweaked toml for git repo https://github.com/valmiki20/rust_learn written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/valmiki20/rust_learn already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6805ad7abd44792c7262c7de0018d3f9e33a7ba05e3dc499bc23b6da5287f04e
[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" "6805ad7abd44792c7262c7de0018d3f9e33a7ba05e3dc499bc23b6da5287f04e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6805ad7abd44792c7262c7de0018d3f9e33a7ba05e3dc499bc23b6da5287f04e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6805ad7abd44792c7262c7de0018d3f9e33a7ba05e3dc499bc23b6da5287f04e", kill_on_drop: false }`
[INFO] [stdout] 6805ad7abd44792c7262c7de0018d3f9e33a7ba05e3dc499bc23b6da5287f04e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d8c4eaf8820ea8ee477a99111ea4a5b24213643471b3825cb50c8a793f6f535e
[INFO] running `Command { std: "docker" "start" "-a" "d8c4eaf8820ea8ee477a99111ea4a5b24213643471b3825cb50c8a793f6f535e", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_learn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "d8c4eaf8820ea8ee477a99111ea4a5b24213643471b3825cb50c8a793f6f535e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8c4eaf8820ea8ee477a99111ea4a5b24213643471b3825cb50c8a793f6f535e", kill_on_drop: false }`
[INFO] [stdout] d8c4eaf8820ea8ee477a99111ea4a5b24213643471b3825cb50c8a793f6f535e