[INFO] cloning repository https://github.com/imalexlab/rustlings
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/imalexlab/rustlings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fimalexlab%2Frustlings", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fimalexlab%2Frustlings'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c07376f72321709157de9cce838d2252e625263a
[INFO] documenting imalexlab/rustlings against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fimalexlab%2Frustlings" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/imalexlab/rustlings on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/imalexlab/rustlings
[INFO] finished tweaking git repo https://github.com/imalexlab/rustlings
[INFO] tweaked toml for git repo https://github.com/imalexlab/rustlings written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/imalexlab/rustlings already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2f231f4e04747e1a46731ffc58e5420ceb6f44f2542a263089f15bc0fed1741b
[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" "2f231f4e04747e1a46731ffc58e5420ceb6f44f2542a263089f15bc0fed1741b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2f231f4e04747e1a46731ffc58e5420ceb6f44f2542a263089f15bc0fed1741b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f231f4e04747e1a46731ffc58e5420ceb6f44f2542a263089f15bc0fed1741b", kill_on_drop: false }`
[INFO] [stdout] 2f231f4e04747e1a46731ffc58e5420ceb6f44f2542a263089f15bc0fed1741b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 70d0e032dc9a6e860217e24a99134a76787226fa370ee8aaedf707d20e8ebfc2
[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" "70d0e032dc9a6e860217e24a99134a76787226fa370ee8aaedf707d20e8ebfc2", kill_on_drop: false }`
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]  Documenting rustlings v4.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.26s
[INFO] running `Command { std: "docker" "inspect" "70d0e032dc9a6e860217e24a99134a76787226fa370ee8aaedf707d20e8ebfc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70d0e032dc9a6e860217e24a99134a76787226fa370ee8aaedf707d20e8ebfc2", kill_on_drop: false }`
[INFO] [stdout] 70d0e032dc9a6e860217e24a99134a76787226fa370ee8aaedf707d20e8ebfc2