[INFO] updating cached repository https://github.com/tureus/whaletail
[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] a0f88d3ca2fd54d594025b916c4078b1e8cd8312
[INFO] documenting tureus/whaletail against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftureus%2Fwhaletail" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tureus/whaletail 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/tureus/whaletail
[INFO] finished tweaking git repo https://github.com/tureus/whaletail
[INFO] tweaked toml for git repo https://github.com/tureus/whaletail written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/tureus/whaletail 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0db01b80f7831e712bf6fa0ec5c436748bb8e27d0b95e746808a52d16e7fd0bc
[INFO] running `Command { std: "docker" "start" "-a" "0db01b80f7831e712bf6fa0ec5c436748bb8e27d0b95e746808a52d16e7fd0bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0db01b80f7831e712bf6fa0ec5c436748bb8e27d0b95e746808a52d16e7fd0bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0db01b80f7831e712bf6fa0ec5c436748bb8e27d0b95e746808a52d16e7fd0bc", kill_on_drop: false }`
[INFO] [stdout] 0db01b80f7831e712bf6fa0ec5c436748bb8e27d0b95e746808a52d16e7fd0bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] ec20a79a04d1ce7f04a4e3af335285e79b4cf09ffb32457dd5780b3c92c8a35f
[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" "ec20a79a04d1ce7f04a4e3af335285e79b4cf09ffb32457dd5780b3c92c8a35f", 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking futures v0.1.14
[INFO] [stderr]     Checking byteorder v1.0.0
[INFO] [stderr]     Checking serde v1.0.8
[INFO] [stderr]     Checking scoped-tls v0.1.0
[INFO] [stderr]     Checking iovec v0.1.0
[INFO] [stderr]     Checking time v0.1.37
[INFO] [stderr]     Checking inotify v0.3.0
[INFO] [stderr]     Checking filetime v0.1.10
[INFO] [stderr]     Checking num_cpus v1.5.1
[INFO] [stderr]     Checking net2 v0.2.29
[INFO] [stderr]     Checking num-integer v0.1.34
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling ws2_32-sys v0.2.1
[INFO] [stderr]     Checking bytes v0.4.4
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking num-iter v0.1.33
[INFO] [stderr]     Checking walkdir v0.1.8
[INFO] [stderr]     Checking num v0.1.37
[INFO] [stderr]     Checking miow v0.1.5
[INFO] [stderr]     Checking mio v0.6.8
[INFO] [stderr]     Checking tokio-io v0.1.2
[INFO] [stderr]     Checking futures-cpupool v0.1.5
[INFO] [stderr]    Compiling serde_derive_internals v0.15.1
[INFO] [stderr]     Checking tokio-core v0.1.7
[INFO] [stderr]     Checking mio v0.5.1
[INFO] [stderr]    Compiling serde_derive v1.0.8
[INFO] [stderr]     Checking notify v4.0.1
[INFO] [stderr]     Checking chrono v0.3.1
[INFO] [stderr]     Checking serde_json v1.0.2
[INFO] [stderr]  Documenting whaletail v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.73s
[INFO] running `Command { std: "docker" "inspect" "ec20a79a04d1ce7f04a4e3af335285e79b4cf09ffb32457dd5780b3c92c8a35f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec20a79a04d1ce7f04a4e3af335285e79b4cf09ffb32457dd5780b3c92c8a35f", kill_on_drop: false }`
[INFO] [stdout] ec20a79a04d1ce7f04a4e3af335285e79b4cf09ffb32457dd5780b3c92c8a35f