[INFO] updating cached repository https://github.com/sashaweiss/itree
[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] 4bea57f0cf4d6fceb5d5939dda1d17be0ca68391
[INFO] documenting sashaweiss/itree against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsashaweiss%2Fitree" "/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/sashaweiss/itree 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/sashaweiss/itree
[INFO] finished tweaking git repo https://github.com/sashaweiss/itree
[INFO] tweaked toml for git repo https://github.com/sashaweiss/itree written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/sashaweiss/itree 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-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" "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] 6c5f8e533f42a3a1b91c5dea23f8abc00efc71706b5055585bf2af909fd42f11
[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" "6c5f8e533f42a3a1b91c5dea23f8abc00efc71706b5055585bf2af909fd42f11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6c5f8e533f42a3a1b91c5dea23f8abc00efc71706b5055585bf2af909fd42f11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c5f8e533f42a3a1b91c5dea23f8abc00efc71706b5055585bf2af909fd42f11", kill_on_drop: false }`
[INFO] [stdout] 6c5f8e533f42a3a1b91c5dea23f8abc00efc71706b5055585bf2af909fd42f11
[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" "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] 6141c30edc8df0ce5b7765b30f83a2ba7c9df783c48a02c6a26b9694b4212cca
[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" "6141c30edc8df0ce5b7765b30f83a2ba7c9df783c48a02c6a26b9694b4212cca", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.40
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking lazy_static v1.0.0
[INFO] [stderr]    Compiling regex v0.2.10
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking same-file v1.0.2
[INFO] [stderr]     Checking crossbeam v0.3.2
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking bitflags v1.0.3
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking indextree v1.1.1
[INFO] [stderr]     Checking textwrap v0.9.0
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking walkdir v2.1.4
[INFO] [stderr]     Checking regex-syntax v0.5.5
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking atty v0.2.10
[INFO] [stderr]     Checking termion v1.5.1
[INFO] [stderr]     Checking clap v2.31.2
[INFO] [stderr]     Checking aho-corasick v0.6.4
[INFO] [stderr]     Checking globset v0.4.0
[INFO] [stderr]     Checking ignore v0.4.2
[INFO] [stderr]  Documenting itree v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.24s
[INFO] running `Command { std: "docker" "inspect" "6141c30edc8df0ce5b7765b30f83a2ba7c9df783c48a02c6a26b9694b4212cca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6141c30edc8df0ce5b7765b30f83a2ba7c9df783c48a02c6a26b9694b4212cca", kill_on_drop: false }`
[INFO] [stdout] 6141c30edc8df0ce5b7765b30f83a2ba7c9df783c48a02c6a26b9694b4212cca