[INFO] cloning repository https://github.com/aver803bath5/rust_homework_of_ch8-1
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aver803bath5/rust_homework_of_ch8-1" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faver803bath5%2Frust_homework_of_ch8-1", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faver803bath5%2Frust_homework_of_ch8-1'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c3f9533c814e25f78bd118e9f9623e45276aa6a0
[INFO] documenting aver803bath5/rust_homework_of_ch8-1 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%2Faver803bath5%2Frust_homework_of_ch8-1" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aver803bath5/rust_homework_of_ch8-1 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/aver803bath5/rust_homework_of_ch8-1
[INFO] finished tweaking git repo https://github.com/aver803bath5/rust_homework_of_ch8-1
[INFO] tweaked toml for git repo https://github.com/aver803bath5/rust_homework_of_ch8-1 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/aver803bath5/rust_homework_of_ch8-1 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] b444cd5fe76e637a372dd2a138356f206d1db800a029f5d8c3322ea98eaaa029
[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" "b444cd5fe76e637a372dd2a138356f206d1db800a029f5d8c3322ea98eaaa029", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b444cd5fe76e637a372dd2a138356f206d1db800a029f5d8c3322ea98eaaa029", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b444cd5fe76e637a372dd2a138356f206d1db800a029f5d8c3322ea98eaaa029", kill_on_drop: false }`
[INFO] [stdout] b444cd5fe76e637a372dd2a138356f206d1db800a029f5d8c3322ea98eaaa029
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] f4e6b1a30d43281165766370a31a9033c1f4be8cbf12ee00ba689c98c43fbe18
[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" "f4e6b1a30d43281165766370a31a9033c1f4be8cbf12ee00ba689c98c43fbe18", kill_on_drop: false }`
[INFO] [stderr]  Documenting collection_hw v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.78s
[INFO] running `Command { std: "docker" "inspect" "f4e6b1a30d43281165766370a31a9033c1f4be8cbf12ee00ba689c98c43fbe18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4e6b1a30d43281165766370a31a9033c1f4be8cbf12ee00ba689c98c43fbe18", kill_on_drop: false }`
[INFO] [stdout] f4e6b1a30d43281165766370a31a9033c1f4be8cbf12ee00ba689c98c43fbe18