[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 1.47.0 for beta-1.48-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhgfkeep%2Frust-std-network" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hgfkeep/rust-std-network on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "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-2/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" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6226b81ce5fde2f8fbc328630adcee78e99e5f060142458d28d74f9876041767
[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" "6226b81ce5fde2f8fbc328630adcee78e99e5f060142458d28d74f9876041767", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6226b81ce5fde2f8fbc328630adcee78e99e5f060142458d28d74f9876041767", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6226b81ce5fde2f8fbc328630adcee78e99e5f060142458d28d74f9876041767", kill_on_drop: false }`
[INFO] [stdout] 6226b81ce5fde2f8fbc328630adcee78e99e5f060142458d28d74f9876041767
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7dc00aeb689d13a21ab935ea4271c735fe44498d49ca8e80923ec2d77f248105
[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" "7dc00aeb689d13a21ab935ea4271c735fe44498d49ca8e80923ec2d77f248105", kill_on_drop: false }`
[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 serde_json v1.0.51
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking dns-lookup v1.0.1
[INFO] [stderr]     Checking nom v5.1.1
[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-b8a57323fe53b411.rmeta --extern dns_lookup=/opt/rustwide/target/debug/deps/libdns_lookup-e96a6f3b46a9ef04.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-04b5b5e534cee849.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-a218b9556cefdca9.rmeta --extern nom=/opt/rustwide/target/debug/deps/libnom-f162b8fed82d56a0.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-04de4cf55d4bde88.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-d847fae7ceed80d1.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-85cf5841edba720d.rmeta --extern serde_test=/opt/rustwide/target/debug/deps/libserde_test-f1bdf80e8fd4b802.rmeta --extern serde_yaml=/opt/rustwide/target/debug/deps/libserde_yaml-8c8f76e1e4837f7c.rmeta --cap-lints=warn --crate-version 0.1.0` (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" "7dc00aeb689d13a21ab935ea4271c735fe44498d49ca8e80923ec2d77f248105", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7dc00aeb689d13a21ab935ea4271c735fe44498d49ca8e80923ec2d77f248105", kill_on_drop: false }`
[INFO] [stdout] 7dc00aeb689d13a21ab935ea4271c735fe44498d49ca8e80923ec2d77f248105
