[INFO] cloning repository https://github.com/darrenvong/rustlings
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/darrenvong/rustlings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdarrenvong%2Frustlings", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdarrenvong%2Frustlings'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d7aba44894cb10c922983b7f79dfb96e1236c803
[INFO] documenting darrenvong/rustlings against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdarrenvong%2Frustlings" "/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/darrenvong/rustlings on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/darrenvong/rustlings
[INFO] finished tweaking git repo https://github.com/darrenvong/rustlings
[INFO] tweaked toml for git repo https://github.com/darrenvong/rustlings written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/darrenvong/rustlings already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded treeline v0.1.0
[INFO] [stderr]   Downloaded ryu v0.2.8
[INFO] [stderr]   Downloaded serde_json v1.0.39
[INFO] [stderr]   Downloaded libc v0.2.58
[INFO] [stderr]   Downloaded termios v0.3.1
[INFO] [stderr]   Downloaded clicolors-control v1.0.0
[INFO] [stderr]   Downloaded assert_cmd v0.11.1
[INFO] [stderr]   Downloaded predicates-core v1.0.0
[INFO] [stderr]   Downloaded console v0.6.2
[INFO] [stderr]   Downloaded glob v0.3.0
[INFO] [stderr]   Downloaded predicates v1.0.1
[INFO] [stderr]   Downloaded quote v0.6.12
[INFO] [stderr]   Downloaded syn v0.15.34
[INFO] [stderr]   Downloaded serde_derive v1.0.92
[INFO] [stderr]   Downloaded encode_unicode v0.3.5
[INFO] [stderr]   Downloaded console v0.7.5
[INFO] [stderr]   Downloaded filetime v0.2.5
[INFO] [stderr]   Downloaded lock_api v0.2.0
[INFO] [stderr]   Downloaded aho-corasick v0.6.10
[INFO] [stderr]   Downloaded difference v2.0.0
[INFO] [stderr]   Downloaded notify v4.0.12
[INFO] [stderr]   Downloaded normalize-line-endings v0.2.2
[INFO] [stderr]   Downloaded parking_lot_core v0.5.0
[INFO] [stderr]   Downloaded autocfg v0.1.4
[INFO] [stderr]   Downloaded float-cmp v0.4.0
[INFO] [stderr]   Downloaded predicates-tree v1.0.0
[INFO] [stderr]   Downloaded serde v1.0.92
[INFO] [stderr]   Downloaded escargot v0.4.0
[INFO] [stderr]   Downloaded parking_lot v0.8.0
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "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] d4e637135e6215df20f5dc78ce233fcbb2891654d2d77febb153a1f741e0c43c
[INFO] running `Command { std: "docker" "start" "-a" "d4e637135e6215df20f5dc78ce233fcbb2891654d2d77febb153a1f741e0c43c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d4e637135e6215df20f5dc78ce233fcbb2891654d2d77febb153a1f741e0c43c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4e637135e6215df20f5dc78ce233fcbb2891654d2d77febb153a1f741e0c43c", kill_on_drop: false }`
[INFO] [stdout] d4e637135e6215df20f5dc78ce233fcbb2891654d2d77febb153a1f741e0c43c
[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" "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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b499bdf7598737fbc5a2fdeab624d4377db3537633058feb9450edeecae0e943
[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" "b499bdf7598737fbc5a2fdeab624d4377db3537633058feb9450edeecae0e943", kill_on_drop: false }`
[INFO] [stderr]     Checking clicolors-control v0.2.0
[INFO] [stderr]     Checking inotify v0.6.1
[INFO] [stderr]     Checking console v0.7.5
[INFO] [stderr]     Checking console v0.6.2
[INFO] [stderr]     Checking notify v4.0.12
[INFO] [stderr]     Checking indicatif v0.9.0
[INFO] [stderr]  Documenting rustlings v2.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.72s
[INFO] running `Command { std: "docker" "inspect" "b499bdf7598737fbc5a2fdeab624d4377db3537633058feb9450edeecae0e943", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b499bdf7598737fbc5a2fdeab624d4377db3537633058feb9450edeecae0e943", kill_on_drop: false }`
[INFO] [stdout] b499bdf7598737fbc5a2fdeab624d4377db3537633058feb9450edeecae0e943