[INFO] cloning repository https://github.com/hgfkeep/rust-std-network
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hgfkeep/rust-std-network" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhgfkeep%2Frust-std-network", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhgfkeep%2Frust-std-network'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9631df3643300e8b054780916ed5e2565c918e3d
[INFO] documenting hgfkeep/rust-std-network against 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhgfkeep%2Frust-std-network" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hgfkeep/rust-std-network on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hgfkeep/rust-std-network
[INFO] removed workspace from git repo https://github.com/hgfkeep/rust-std-network
[INFO] finished tweaking git repo https://github.com/hgfkeep/rust-std-network
[INFO] tweaked toml for git repo https://github.com/hgfkeep/rust-std-network written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/hgfkeep/rust-std-network already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 94b54c671dff78882deeb131c4a4abfd15fbf14c4f92efa74e7375b9a183ee7a
[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" "94b54c671dff78882deeb131c4a4abfd15fbf14c4f92efa74e7375b9a183ee7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "94b54c671dff78882deeb131c4a4abfd15fbf14c4f92efa74e7375b9a183ee7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94b54c671dff78882deeb131c4a4abfd15fbf14c4f92efa74e7375b9a183ee7a", kill_on_drop: false }`
[INFO] [stdout] 94b54c671dff78882deeb131c4a4abfd15fbf14c4f92efa74e7375b9a183ee7a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3251e2815b24efbe90e6ea056d69e3b8b7cb6c34c0ed0e88a251d47603babaef
[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" "3251e2815b24efbe90e6ea056d69e3b8b7cb6c34c0ed0e88a251d47603babaef", 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]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]     Checking static_assertions v0.3.4
[INFO] [stderr]    Compiling nom v5.1.1
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]    Compiling lexical-core v0.6.7
[INFO] [stderr]     Checking socket2 v0.3.12
[INFO] [stderr]     Checking serde_test v1.0.106
[INFO] [stderr]     Checking serde_yaml v0.8.11
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking dns-lookup v1.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]  Documenting network v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> ipaddr/src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(ip)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `network`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ipaddr ipaddr/src/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 clap=/opt/rustwide/target/debug/deps/libclap-3f0a23dc2a02e01e.rmeta --extern dns_lookup=/opt/rustwide/target/debug/deps/libdns_lookup-576bac8aafde957d.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-0ec4bc278627ab58.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-73430f19bfb49216.rmeta --extern nom=/opt/rustwide/target/debug/deps/libnom-854fe7c9721c160d.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-d80c5659c3302ca4.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-f6dc72bfdf087dd7.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-1a66dbf512ec8291.rmeta --extern serde_test=/opt/rustwide/target/debug/deps/libserde_test-a2c171538dd38afa.rmeta --extern serde_yaml=/opt/rustwide/target/debug/deps/libserde_yaml-82870a8db52dc6eb.rmeta --cap-lints=warn` (exit code: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "3251e2815b24efbe90e6ea056d69e3b8b7cb6c34c0ed0e88a251d47603babaef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3251e2815b24efbe90e6ea056d69e3b8b7cb6c34c0ed0e88a251d47603babaef", kill_on_drop: false }`
[INFO] [stdout] 3251e2815b24efbe90e6ea056d69e3b8b7cb6c34c0ed0e88a251d47603babaef