[INFO] cloning repository https://github.com/k3rn3l00p5/core_concepts
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/k3rn3l00p5/core_concepts" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fk3rn3l00p5%2Fcore_concepts", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fk3rn3l00p5%2Fcore_concepts'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d4b6364f5aef1f1035ba3266655951be64c7800b
[INFO] checking k3rn3l00p5/core_concepts against try#d990716b6a1fdde1300748828a9c9e79dfd0b898 for pr-74846
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fk3rn3l00p5%2Fcore_concepts" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/k3rn3l00p5/core_concepts on toolchain d990716b6a1fdde1300748828a9c9e79dfd0b898
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/k3rn3l00p5/core_concepts
[INFO] finished tweaking git repo https://github.com/k3rn3l00p5/core_concepts
[INFO] tweaked toml for git repo https://github.com/k3rn3l00p5/core_concepts written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/k3rn3l00p5/core_concepts already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 04e0b1f902715d79a6bc0bda3128205fde696b227975cf0d899f8c9b3ee6d55d
[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" "04e0b1f902715d79a6bc0bda3128205fde696b227975cf0d899f8c9b3ee6d55d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04e0b1f902715d79a6bc0bda3128205fde696b227975cf0d899f8c9b3ee6d55d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04e0b1f902715d79a6bc0bda3128205fde696b227975cf0d899f8c9b3ee6d55d", kill_on_drop: false }`
[INFO] [stdout] 04e0b1f902715d79a6bc0bda3128205fde696b227975cf0d899f8c9b3ee6d55d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bbe46ced587a2504eb7031d21c1881ffa5d5b76cb8108d1629104ce8128f6346
[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" "bbe46ced587a2504eb7031d21c1881ffa5d5b76cb8108d1629104ce8128f6346", kill_on_drop: false }`
[INFO] [stderr]     Checking core_concepts v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "bbe46ced587a2504eb7031d21c1881ffa5d5b76cb8108d1629104ce8128f6346", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbe46ced587a2504eb7031d21c1881ffa5d5b76cb8108d1629104ce8128f6346", kill_on_drop: false }`
[INFO] [stdout] bbe46ced587a2504eb7031d21c1881ffa5d5b76cb8108d1629104ce8128f6346