[INFO] cloning repository https://github.com/BeautifulTovarisch/rust-grep-tutorial
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BeautifulTovarisch/rust-grep-tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBeautifulTovarisch%2Frust-grep-tutorial", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBeautifulTovarisch%2Frust-grep-tutorial'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b24c7c9aa0296b2e3731f551fcb79af2e756cfa1
[INFO] documenting BeautifulTovarisch/rust-grep-tutorial against 1.54.0 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBeautifulTovarisch%2Frust-grep-tutorial" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/BeautifulTovarisch/rust-grep-tutorial on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/BeautifulTovarisch/rust-grep-tutorial
[INFO] finished tweaking git repo https://github.com/BeautifulTovarisch/rust-grep-tutorial
[INFO] tweaked toml for git repo https://github.com/BeautifulTovarisch/rust-grep-tutorial written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/BeautifulTovarisch/rust-grep-tutorial already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 684e23442f4c8112ab6b44de004fc0c74aec1c7fc6d566b19db1138bc33246c8
[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" "684e23442f4c8112ab6b44de004fc0c74aec1c7fc6d566b19db1138bc33246c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "684e23442f4c8112ab6b44de004fc0c74aec1c7fc6d566b19db1138bc33246c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "684e23442f4c8112ab6b44de004fc0c74aec1c7fc6d566b19db1138bc33246c8", kill_on_drop: false }`
[INFO] [stdout] 684e23442f4c8112ab6b44de004fc0c74aec1c7fc6d566b19db1138bc33246c8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d8263c8b8c1df16502a4f9b5bfac091c80430cd69e968f4d18fc0794287b30b5
[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" "d8263c8b8c1df16502a4f9b5bfac091c80430cd69e968f4d18fc0794287b30b5", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]    Compiling libc v0.2.45
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]    Compiling syn v0.15.23
[INFO] [stderr]    Compiling structopt-derive v0.2.14
[INFO] [stderr]     Checking structopt v0.2.14
[INFO] [stderr]  Documenting mini-grep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.59s
[INFO] running `Command { std: "docker" "inspect" "d8263c8b8c1df16502a4f9b5bfac091c80430cd69e968f4d18fc0794287b30b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8263c8b8c1df16502a4f9b5bfac091c80430cd69e968f4d18fc0794287b30b5", kill_on_drop: false }`
[INFO] [stdout] d8263c8b8c1df16502a4f9b5bfac091c80430cd69e968f4d18fc0794287b30b5