[INFO] cloning repository https://github.com/0918nobita/low-level-helloworld
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/0918nobita/low-level-helloworld" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0918nobita%2Flow-level-helloworld", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0918nobita%2Flow-level-helloworld'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 88dd2c5af94c911bf7fe8ccdddc27de5264c074e
[INFO] documenting 0918nobita/low-level-helloworld against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0918nobita%2Flow-level-helloworld" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/0918nobita/low-level-helloworld on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-1/source/.cargo/config
[INFO] started tweaking git repo https://github.com/0918nobita/low-level-helloworld
[INFO] finished tweaking git repo https://github.com/0918nobita/low-level-helloworld
[INFO] tweaked toml for git repo https://github.com/0918nobita/low-level-helloworld written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/0918nobita/low-level-helloworld already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", 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] e121440b6b69d400674d5a5dd1a3f2086c0b6d947e57483e8d39dd77e4ba7e6e
[INFO] running `Command { std: "docker" "start" "-a" "e121440b6b69d400674d5a5dd1a3f2086c0b6d947e57483e8d39dd77e4ba7e6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e121440b6b69d400674d5a5dd1a3f2086c0b6d947e57483e8d39dd77e4ba7e6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e121440b6b69d400674d5a5dd1a3f2086c0b6d947e57483e8d39dd77e4ba7e6e", kill_on_drop: false }`
[INFO] [stdout] e121440b6b69d400674d5a5dd1a3f2086c0b6d947e57483e8d39dd77e4ba7e6e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d9bbf1cf411c2e10307133e3957ae6dcb4ad1d47b50f0b096879ce7c47772ef2
[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" "d9bbf1cf411c2e10307133e3957ae6dcb4ad1d47b50f0b096879ce7c47772ef2", kill_on_drop: false }`
[INFO] [stderr]    Compiling hello v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting hello v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.87s
[INFO] running `Command { std: "docker" "inspect" "d9bbf1cf411c2e10307133e3957ae6dcb4ad1d47b50f0b096879ce7c47772ef2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9bbf1cf411c2e10307133e3957ae6dcb4ad1d47b50f0b096879ce7c47772ef2", kill_on_drop: false }`
[INFO] [stdout] d9bbf1cf411c2e10307133e3957ae6dcb4ad1d47b50f0b096879ce7c47772ef2