[INFO] cloning repository https://github.com/travispchen/rustlings_solutions
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/travispchen/rustlings_solutions" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftravispchen%2Frustlings_solutions", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftravispchen%2Frustlings_solutions'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fbd0a658ce2a2824e88edbcbfcd7c3e71d82ad97
[INFO] documenting travispchen/rustlings_solutions against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftravispchen%2Frustlings_solutions" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/travispchen/rustlings_solutions on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/travispchen/rustlings_solutions
[INFO] finished tweaking git repo https://github.com/travispchen/rustlings_solutions
[INFO] tweaked toml for git repo https://github.com/travispchen/rustlings_solutions written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/travispchen/rustlings_solutions already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 14477aca4c53a8ffb291f12c96d7719321a2a6cd760b047f86c8e88075350d01
[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" "14477aca4c53a8ffb291f12c96d7719321a2a6cd760b047f86c8e88075350d01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "14477aca4c53a8ffb291f12c96d7719321a2a6cd760b047f86c8e88075350d01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14477aca4c53a8ffb291f12c96d7719321a2a6cd760b047f86c8e88075350d01", kill_on_drop: false }`
[INFO] [stdout] 14477aca4c53a8ffb291f12c96d7719321a2a6cd760b047f86c8e88075350d01
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--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] 9cc8c0c4cddb98c21168d0ba250086d7a532197eac915085203a12c1e90da3f4
[INFO] running `Command { std: "docker" "start" "-a" "9cc8c0c4cddb98c21168d0ba250086d7a532197eac915085203a12c1e90da3f4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling syn v1.0.70
[INFO] [stderr]    Compiling argh_shared v0.1.4
[INFO] [stderr]     Checking lock_api v0.4.3
[INFO] [stderr]     Checking regex v1.4.6
[INFO] [stderr]     Checking number_prefix v0.2.8
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking terminal_size v0.1.16
[INFO] [stderr]     Checking inotify-sys v0.1.5
[INFO] [stderr]     Checking termios v0.3.3
[INFO] [stderr]     Checking clicolors-control v1.0.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking filetime v0.2.14
[INFO] [stderr]     Checking console v0.14.1
[INFO] [stderr]     Checking inotify v0.7.1
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking console v0.7.7
[INFO] [stderr]     Checking indicatif v0.10.3
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking notify v4.0.16
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling argh_derive v0.1.4
[INFO] [stderr]     Checking argh v0.1.4
[INFO] [stderr]     Checking serde v1.0.125
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]  Documenting rustlings v4.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 40.27s
[INFO] running `Command { std: "docker" "inspect" "9cc8c0c4cddb98c21168d0ba250086d7a532197eac915085203a12c1e90da3f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9cc8c0c4cddb98c21168d0ba250086d7a532197eac915085203a12c1e90da3f4", kill_on_drop: false }`
[INFO] [stdout] 9cc8c0c4cddb98c21168d0ba250086d7a532197eac915085203a12c1e90da3f4