[INFO] updating cached repository https://github.com/zhangpanweb/rust-practice
[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] 39e29eeaac1716c5c271f08bcc4d52a3514d08fe
[INFO] documenting zhangpanweb/rust-practice against try#66dfc4e010913fbed0c4ea91fc2c010004b0f441 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzhangpanweb%2Frust-practice" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zhangpanweb/rust-practice 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/zhangpanweb/rust-practice
[INFO] finished tweaking git repo https://github.com/zhangpanweb/rust-practice
[INFO] tweaked toml for git repo https://github.com/zhangpanweb/rust-practice written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/zhangpanweb/rust-practice 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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] ce8b88e23b9f95cb453aacbec929d5c1119c48f8e394c36490cade52b883ed65
[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" "ce8b88e23b9f95cb453aacbec929d5c1119c48f8e394c36490cade52b883ed65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ce8b88e23b9f95cb453aacbec929d5c1119c48f8e394c36490cade52b883ed65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce8b88e23b9f95cb453aacbec929d5c1119c48f8e394c36490cade52b883ed65", kill_on_drop: false }`
[INFO] [stdout] ce8b88e23b9f95cb453aacbec929d5c1119c48f8e394c36490cade52b883ed65
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] [stdout] 421372a375faa37e6fefcf28dd9b38b6f5ef74bb9925f4ef7a651f408bfa5ed2
[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" "421372a375faa37e6fefcf28dd9b38b6f5ef74bb9925f4ef7a651f408bfa5ed2", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.7
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[INFO] [stderr]    Compiling serde_json v0.9.10
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[INFO] [stderr]    Compiling serde_derive v1.0.103
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[INFO] [stderr]    Compiling derivative v1.0.3
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[INFO] [stderr]    Compiling libloading v0.3.4
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[INFO] [stderr]     Checking pistoncore-input v0.20.0
[INFO] [stderr]     Checking serde_json v1.0.44
[INFO] [stderr]     Checking pistoncore-window v0.30.0
[INFO] [stderr]     Checking pistoncore-event_loop v0.35.0
[INFO] [stderr]     Checking pistoncore-glutin_window v0.43.0
[INFO] [stderr]     Checking piston v0.35.0
[INFO] [stderr]     Checking piston_window v0.74.0
[INFO] [stderr]  Documenting rust-practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: Could not document `rust-practice`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name chat_server src/bin/chat-server/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern chrono=/opt/rustwide/target/debug/deps/libchrono-4493d85cf315ad92.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-93c741be9fe5a2f5.rmeta --extern iron=/opt/rustwide/target/debug/deps/libiron-d83db8fafe95865c.rmeta --extern logger=/opt/rustwide/target/debug/deps/liblogger-b2c9df29461d5b64.rmeta --extern piston_window=/opt/rustwide/target/debug/deps/libpiston_window-d3dd252eccd98f02.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-9746693858500f70.rmeta --extern router=/opt/rustwide/target/debug/deps/librouter-24f3c8c4ad51d493.rmeta --extern rustc_serialize=/opt/rustwide/target/debug/deps/librustc_serialize-7ddf6b4d13e0395e.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-8b010d6c96d8ee4f.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-cffaa5bae9bbd698.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-099959693f7f6161.rmeta --extern sha2=/opt/rustwide/target/debug/deps/libsha2-fcbbbccab44c742e.rmeta --extern time=/opt/rustwide/target/debug/deps/libtime-cb480a6426cebf8a.rmeta --extern uuid=/opt/rustwide/target/debug/deps/libuuid-03411877ad02895d.rmeta --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "421372a375faa37e6fefcf28dd9b38b6f5ef74bb9925f4ef7a651f408bfa5ed2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "421372a375faa37e6fefcf28dd9b38b6f5ef74bb9925f4ef7a651f408bfa5ed2", kill_on_drop: false }`
[INFO] [stdout] 421372a375faa37e6fefcf28dd9b38b6f5ef74bb9925f4ef7a651f408bfa5ed2