[INFO] updating cached repository https://github.com/killercup/limerick_ebooks
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 54c596866e8275d5b141ff7ac03342d7bab7d475
[INFO] documenting killercup/limerick_ebooks against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkillercup%2Flimerick_ebooks" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/killercup/limerick_ebooks on toolchain 394e1b40d264aa6928811919c1124fa248e7d802
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/killercup/limerick_ebooks
[INFO] finished tweaking git repo https://github.com/killercup/limerick_ebooks
[INFO] tweaked toml for git repo https://github.com/killercup/limerick_ebooks written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/killercup/limerick_ebooks already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a28868564feabd63a6e3f48b9bbe65beac3d4a40fffeb0b183757b9e33e78fc5
[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" "a28868564feabd63a6e3f48b9bbe65beac3d4a40fffeb0b183757b9e33e78fc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a28868564feabd63a6e3f48b9bbe65beac3d4a40fffeb0b183757b9e33e78fc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a28868564feabd63a6e3f48b9bbe65beac3d4a40fffeb0b183757b9e33e78fc5", kill_on_drop: false }`
[INFO] [stdout] a28868564feabd63a6e3f48b9bbe65beac3d4a40fffeb0b183757b9e33e78fc5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5eb7cdcf6fb4538f1c5a560a4c8a9bbbbeafdc97bfa3e29f0d49a66af558fcb5
[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" "5eb7cdcf6fb4538f1c5a560a4c8a9bbbbeafdc97bfa3e29f0d49a66af558fcb5", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking regex-syntax v0.4.1
[INFO] [stderr]     Checking serde v1.0.8
[INFO] [stderr]     Checking num-traits v0.1.39
[INFO] [stderr]     Checking bitflags v0.8.2
[INFO] [stderr]     Checking lazy_static v0.2.8
[INFO] [stderr]     Checking log v0.3.8
[INFO] [stderr]     Checking typed-arena v1.3.0
[INFO] [stderr]     Checking pest v0.3.3
[INFO] [stderr]     Checking arena-tree v0.3.0
[INFO] [stderr]     Checking atty v0.2.2
[INFO] [stderr]     Checking term_size v0.3.0
[INFO] [stderr]     Checking unreachable v0.1.1
[INFO] [stderr]     Checking backtrace-sys v0.1.11
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking thread_local v0.3.3
[INFO] [stderr]     Checking backtrace v0.3.2
[INFO] [stderr]     Checking clap v2.24.2
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking error-chain v0.11.0-rc.2
[INFO] [stderr]     Checking regex v0.2.2
[INFO] [stderr]    Compiling serde_derive_internals v0.15.1
[INFO] [stderr]    Compiling structopt-derive v0.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.11
[INFO] [stderr]     Checking structopt v0.1.0
[INFO] [stderr]     Checking comrak v0.1.4
[INFO] [stderr]     Checking serde_json v1.0.2
[INFO] [stderr]     Checking serde_yaml v0.7.1
[INFO] [stderr]     Checking handlebars v0.27.0
[INFO] [stderr]  Documenting limericks v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 32.86s
[INFO] running `Command { std: "docker" "inspect" "5eb7cdcf6fb4538f1c5a560a4c8a9bbbbeafdc97bfa3e29f0d49a66af558fcb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5eb7cdcf6fb4538f1c5a560a4c8a9bbbbeafdc97bfa3e29f0d49a66af558fcb5", kill_on_drop: false }`
[INFO] [stdout] 5eb7cdcf6fb4538f1c5a560a4c8a9bbbbeafdc97bfa3e29f0d49a66af558fcb5