[INFO] updating cached repository https://github.com/foxford/janus-p2p-rs
[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] 8ab056c2be138b09486d37104871a0c0abb589d0
[INFO] documenting foxford/janus-p2p-rs against try#66dfc4e010913fbed0c4ea91fc2c010004b0f441 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffoxford%2Fjanus-p2p-rs" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/foxford/janus-p2p-rs on toolchain 66dfc4e010913fbed0c4ea91fc2c010004b0f441
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/foxford/janus-p2p-rs
[INFO] finished tweaking git repo https://github.com/foxford/janus-p2p-rs
[INFO] tweaked toml for git repo https://github.com/foxford/janus-p2p-rs written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/foxford/janus-p2p-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] db331b58992cc99126b961ad23424df11a00d0c13aa0ef2a61cd92bba1b03598
[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" "db331b58992cc99126b961ad23424df11a00d0c13aa0ef2a61cd92bba1b03598", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "db331b58992cc99126b961ad23424df11a00d0c13aa0ef2a61cd92bba1b03598", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db331b58992cc99126b961ad23424df11a00d0c13aa0ef2a61cd92bba1b03598", kill_on_drop: false }`
[INFO] [stdout] db331b58992cc99126b961ad23424df11a00d0c13aa0ef2a61cd92bba1b03598
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", 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] 756cfff774b9b91b2c3759a4d6b761d468863ef39458a4d73a02d56125b72dee
[INFO] running `Command { std: "docker" "start" "-a" "756cfff774b9b91b2c3759a4d6b761d468863ef39458a4d73a02d56125b72dee", kill_on_drop: false }`
[INFO] [stderr]     Checking num-traits v0.1.40
[INFO] [stderr]    Compiling pkg-config v0.3.9
[INFO] [stderr]     Checking libc v0.2.33
[INFO] [stderr]    Compiling jansson-sys v0.1.0
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]     Checking lazy_static v0.2.10
[INFO] [stderr]     Checking serde v1.0.21
[INFO] [stderr]     Checking itoa v0.3.4
[INFO] [stderr]     Checking dtoa v0.4.2
[INFO] [stderr]     Checking cstr-macro v0.1.0
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking colored v1.6.0
[INFO] [stderr]     Checking num-integer v0.1.35
[INFO] [stderr]    Compiling glib-sys v0.4.0
[INFO] [stderr]     Checking num-iter v0.1.34
[INFO] [stderr]     Checking num v0.1.40
[INFO] [stderr]     Checking time v0.1.38
[INFO] [stderr]     Checking chrono v0.4.0
[INFO] [stderr]    Compiling serde_derive_internals v0.17.0
[INFO] [stderr]     Checking janus-plugin-sys v0.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.21
[INFO] [stderr]     Checking janus-plugin v0.7.1
[INFO] [stderr]     Checking serde_json v1.0.6
[INFO] [stderr]  Documenting janus-p2p v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.92s
[INFO] running `Command { std: "docker" "inspect" "756cfff774b9b91b2c3759a4d6b761d468863ef39458a4d73a02d56125b72dee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "756cfff774b9b91b2c3759a4d6b761d468863ef39458a4d73a02d56125b72dee", kill_on_drop: false }`
[INFO] [stdout] 756cfff774b9b91b2c3759a4d6b761d468863ef39458a4d73a02d56125b72dee