[INFO] cloning repository https://github.com/mantarfish/minigrep-from-rust-programming
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mantarfish/minigrep-from-rust-programming" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmantarfish%2Fminigrep-from-rust-programming", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmantarfish%2Fminigrep-from-rust-programming'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5472c807a868eb04a9712bd687082e7f4429998a
[INFO] documenting mantarfish/minigrep-from-rust-programming 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%2Fmantarfish%2Fminigrep-from-rust-programming" "/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/mantarfish/minigrep-from-rust-programming 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/mantarfish/minigrep-from-rust-programming
[INFO] finished tweaking git repo https://github.com/mantarfish/minigrep-from-rust-programming
[INFO] tweaked toml for git repo https://github.com/mantarfish/minigrep-from-rust-programming written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/mantarfish/minigrep-from-rust-programming 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] 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" "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] [stdout] 300d01e7c0dee64129f85e7c00cbda3981dad08af23ce65683ad69363c6941c9
[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" "300d01e7c0dee64129f85e7c00cbda3981dad08af23ce65683ad69363c6941c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "300d01e7c0dee64129f85e7c00cbda3981dad08af23ce65683ad69363c6941c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "300d01e7c0dee64129f85e7c00cbda3981dad08af23ce65683ad69363c6941c9", kill_on_drop: false }`
[INFO] [stdout] 300d01e7c0dee64129f85e7c00cbda3981dad08af23ce65683ad69363c6941c9
[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" "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] d9460ec228c351f017f9132400944a1068c66b8d64f6f9ff01bb9887f91ffb74
[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" "d9460ec228c351f017f9132400944a1068c66b8d64f6f9ff01bb9887f91ffb74", kill_on_drop: false }`
[INFO] [stderr]  Documenting minigrep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.75s
[INFO] running `Command { std: "docker" "inspect" "d9460ec228c351f017f9132400944a1068c66b8d64f6f9ff01bb9887f91ffb74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9460ec228c351f017f9132400944a1068c66b8d64f6f9ff01bb9887f91ffb74", kill_on_drop: false }`
[INFO] [stdout] d9460ec228c351f017f9132400944a1068c66b8d64f6f9ff01bb9887f91ffb74