[INFO] cloning repository https://github.com/Ongy/dhcp-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Ongy/dhcp-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOngy%2Fdhcp-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOngy%2Fdhcp-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3c49bb9521a5e720109c7ff36eb130936fb3aedc
[INFO] documenting Ongy/dhcp-rs against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOngy%2Fdhcp-rs" "/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/Ongy/dhcp-rs on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Ongy/dhcp-rs
[INFO] finished tweaking git repo https://github.com/Ongy/dhcp-rs
[INFO] tweaked toml for git repo https://github.com/Ongy/dhcp-rs written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/Ongy/dhcp-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/Ongy/config-rs`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pnet_datalink v0.20.0
[INFO] [stderr]   Downloaded redox_syscall v0.1.32
[INFO] [stderr]   Downloaded itertools v0.7.4
[INFO] [stderr]   Downloaded serde_json v1.0.8
[INFO] [stderr]   Downloaded clap v2.29.0
[INFO] [stderr]   Downloaded pnet_sys v0.20.0
[INFO] [stderr]   Downloaded pnet_base v0.20.0
[INFO] [stderr]   Downloaded nix v0.7.0
[INFO] [stderr]   Downloaded serde_derive v1.0.24
[INFO] [stderr]   Downloaded serde v1.0.24
[INFO] [stderr]   Downloaded ipnetwork v0.12.7
[INFO] [stderr]   Downloaded pnet_macros_support v0.20.0
[INFO] [stderr]   Downloaded pnet_macros v0.20.0
[INFO] [stderr]   Downloaded pnet_transport v0.20.0
[INFO] [stderr]   Downloaded caps v0.1.0
[INFO] [stderr]   Downloaded pnet_packet v0.20.0
[INFO] [stderr]   Downloaded privdrop v0.1.3
[INFO] [stderr]   Downloaded pnet v0.20.0
[INFO] [stderr]   Downloaded serde_derive_internals v0.18.0
[INFO] [stderr]   Downloaded quickcheck v0.5.0
[INFO] [stderr]   Downloaded syslog v3.3.0
[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" "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" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aa985e0dc962ad758b36c5abaa60bd46cda3fca8764434025e2b6b9c3771bb08
[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" "aa985e0dc962ad758b36c5abaa60bd46cda3fca8764434025e2b6b9c3771bb08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aa985e0dc962ad758b36c5abaa60bd46cda3fca8764434025e2b6b9c3771bb08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa985e0dc962ad758b36c5abaa60bd46cda3fca8764434025e2b6b9c3771bb08", kill_on_drop: false }`
[INFO] [stdout] aa985e0dc962ad758b36c5abaa60bd46cda3fca8764434025e2b6b9c3771bb08
[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" "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" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e75d0bcac950c2a968c018714b75fb15218ef1e9362c49348749434a340d07a9
[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" "e75d0bcac950c2a968c018714b75fb15218ef1e9362c49348749434a340d07a9", 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.34
[INFO] [stderr]    Compiling log v0.3.8
[INFO] [stderr]    Compiling regex-syntax v0.4.1
[INFO] [stderr]     Checking pnet_base v0.20.0
[INFO] [stderr]     Checking ipnetwork v0.12.7
[INFO] [stderr]    Compiling pnet v0.20.0
[INFO] [stderr]     Checking serde v1.0.24
[INFO] [stderr]     Checking num-traits v0.1.41
[INFO] [stderr]     Checking itertools v0.7.4
[INFO] [stderr]    Compiling nix v0.7.0
[INFO] [stderr]    Compiling serde_derive_internals v0.18.0
[INFO] [stderr]    Compiling rs-config-derive v0.1.0 (https://github.com/Ongy/config-rs#5d2e1a25)
[INFO] [stderr]    Compiling thread_local v0.3.5
[INFO] [stderr]     Checking pnet_macros_support v0.20.0
[INFO] [stderr]     Checking pnet_sys v0.20.0
[INFO] [stderr]     Checking time v0.1.38
[INFO] [stderr]     Checking atty v0.2.3
[INFO] [stderr]     Checking unix_socket v0.5.0
[INFO] [stderr]     Checking caps v0.1.0
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling syntex_errors v0.42.0
[INFO] [stderr]     Checking clap v2.29.0
[INFO] [stderr]    Compiling aho-corasick v0.6.4
[INFO] [stderr]     Checking pnet_datalink v0.20.0
[INFO] [stderr]     Checking rs-config v0.1.0 (https://github.com/Ongy/config-rs#5d2e1a25)
[INFO] [stderr]    Compiling serde_derive v1.0.24
[INFO] [stderr]    Compiling regex v0.2.3
[INFO] [stderr]    Compiling syntex_syntax v0.42.0
[INFO] [stderr]     Checking syslog v3.3.0
[INFO] [stderr]     Checking privdrop v0.1.3
[INFO] [stderr]     Checking serde_json v1.0.8
[INFO] [stderr]    Compiling syntex v0.42.2
[INFO] [stderr]    Compiling pnet_macros v0.20.0
[INFO] [stderr]    Compiling pnet_packet v0.20.0
[INFO] [stderr]     Checking pnet_transport v0.20.0
[INFO] [stderr]  Documenting dhcp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/allocator.rs:295:37
[INFO] [stdout]     |
[INFO] [stdout] 295 |     fn next_ip(&mut self) -> Option<(Ipv4Addr)> {
[INFO] [stdout]     |                                     ^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 16s
[INFO] running `Command { std: "docker" "inspect" "e75d0bcac950c2a968c018714b75fb15218ef1e9362c49348749434a340d07a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e75d0bcac950c2a968c018714b75fb15218ef1e9362c49348749434a340d07a9", kill_on_drop: false }`
[INFO] [stdout] e75d0bcac950c2a968c018714b75fb15218ef1e9362c49348749434a340d07a9