[INFO] cloning repository https://github.com/xgzeng/cloudflare-ddns-service
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xgzeng/cloudflare-ddns-service" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxgzeng%2Fcloudflare-ddns-service", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxgzeng%2Fcloudflare-ddns-service'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f5044103fd37865c36a1727f3e6171960701284c
[INFO] documenting xgzeng/cloudflare-ddns-service against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxgzeng%2Fcloudflare-ddns-service" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/xgzeng/cloudflare-ddns-service on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/xgzeng/cloudflare-ddns-service
[INFO] finished tweaking git repo https://github.com/xgzeng/cloudflare-ddns-service
[INFO] tweaked toml for git repo https://github.com/xgzeng/cloudflare-ddns-service written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/xgzeng/cloudflare-ddns-service already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/rust-lang/log`
[INFO] [stderr]     Updating git repository `https://github.com/cloudflare/cloudflare-rs`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pnet_base v0.29.0
[INFO] [stderr]   Downloaded serde_with v1.12.0
[INFO] [stderr]   Downloaded libflate_lz77 v1.1.0
[INFO] [stderr]   Downloaded rle-decode-fast v1.0.3
[INFO] [stderr]   Downloaded trackable v1.2.0
[INFO] [stderr]   Downloaded trackable_derive v1.0.0
[INFO] [stderr]   Downloaded slog-async v2.7.0
[INFO] [stderr]   Downloaded libflate v1.1.2
[INFO] [stderr]   Downloaded slog-kvfilter v0.7.0
[INFO] [stderr]   Downloaded slog-scope v4.4.0
[INFO] [stderr]   Downloaded serde_qs v0.4.6
[INFO] [stderr]   Downloaded slog-stdlog v4.1.0
[INFO] [stderr]   Downloaded slog-term v2.9.0
[INFO] [stderr]   Downloaded ipnetwork v0.18.0
[INFO] [stderr]   Downloaded redox_users v0.4.2
[INFO] [stderr]   Downloaded sloggers v1.0.1
[INFO] [stderr]   Downloaded pnet_datalink v0.29.0
[INFO] [stderr]   Downloaded pnet_macros v0.29.0
[INFO] [stderr]   Downloaded pnet_macros_support v0.29.0
[INFO] [stderr]   Downloaded pnet_packet v0.29.0
[INFO] [stderr]   Downloaded pnet_sys v0.29.0
[INFO] [stderr]   Downloaded pnet v0.29.0
[INFO] [stderr]   Downloaded pnet_transport v0.29.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", 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] 79cd5b8984ac272e261adb1b7646c79d91316fbf3967f5323dad07f04c4bf304
[INFO] running `Command { std: "docker" "start" "-a" "79cd5b8984ac272e261adb1b7646c79d91316fbf3967f5323dad07f04c4bf304", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "79cd5b8984ac272e261adb1b7646c79d91316fbf3967f5323dad07f04c4bf304", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79cd5b8984ac272e261adb1b7646c79d91316fbf3967f5323dad07f04c4bf304", kill_on_drop: false }`
[INFO] [stdout] 79cd5b8984ac272e261adb1b7646c79d91316fbf3967f5323dad07f04c4bf304
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "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] d4dbfb8d4a4e47a72f9cf318030fbb4c68711c0aeb7c3bb22ce95e741543f5ea
[INFO] running `Command { std: "docker" "start" "-a" "d4dbfb8d4a4e47a72f9cf318030fbb4c68711c0aeb7c3bb22ce95e741543f5ea", 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 cc v1.0.73
[INFO] [stderr]    Compiling log v0.4.11 (https://github.com/rust-lang/log?tag=0.4.11#aa4c0375)
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]     Checking pnet_base v0.29.0
[INFO] [stderr]     Checking arc-swap v1.5.0
[INFO] [stderr]     Checking rle-decode-fast v1.0.3
[INFO] [stderr]    Compiling pnet v0.29.0
[INFO] [stderr]     Checking ipnet v2.4.0
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking tracing v0.1.32
[INFO] [stderr]     Checking http-body v0.4.4
[INFO] [stderr]     Checking crossbeam-utils v0.8.8
[INFO] [stderr]     Checking anyhow v1.0.56
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking pnet_sys v0.29.0
[INFO] [stderr]     Checking time v0.3.7
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking getrandom v0.2.5
[INFO] [stderr]    Compiling quote v1.0.16
[INFO] [stderr]     Checking libflate_lz77 v1.1.0
[INFO] [stderr]     Checking pnet_macros_support v0.29.0
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking slog-scope v4.4.0
[INFO] [stderr]     Checking clap v3.1.6
[INFO] [stderr]     Checking slog-kvfilter v0.7.0
[INFO] [stderr]     Checking term v0.7.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.4
[INFO] [stderr]     Checking libflate v1.1.2
[INFO] [stderr]    Compiling syn v1.0.89
[INFO] [stderr]     Checking mio v0.8.2
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking slog-stdlog v4.1.0
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]     Checking slog-term v2.9.0
[INFO] [stderr]    Compiling openssl-sys v0.9.72
[INFO] [stderr]    Compiling backtrace v0.3.64
[INFO] [stderr]     Checking slog-async v2.7.0
[INFO] [stderr]    Compiling openssl v0.10.38
[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]    Compiling darling_core v0.13.1
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling pnet_macros v0.29.0
[INFO] [stderr]    Compiling trackable_derive v1.0.0
[INFO] [stderr]    Compiling async-trait v0.1.52
[INFO] [stderr]    Compiling darling_macro v0.13.1
[INFO] [stderr]     Checking trackable v1.2.0
[INFO] [stderr]     Checking tokio v1.17.0
[INFO] [stderr]    Compiling darling v0.13.1
[INFO] [stderr]    Compiling serde_with_macros v1.5.1
[INFO] [stderr]     Checking pnet_packet v0.29.0
[INFO] [stderr]     Checking serde v1.0.136
[INFO] [stderr]     Checking tokio-util v0.6.9
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking h2 v0.3.12
[INFO] [stderr]     Checking pnet_transport v0.29.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking ipnetwork v0.18.0
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking serde_json v1.0.79
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking serde_qs v0.4.6
[INFO] [stderr]     Checking serde_with v1.12.0
[INFO] [stderr]     Checking serde_yaml v0.8.23
[INFO] [stderr]     Checking pnet_datalink v0.29.0
[INFO] [stderr]     Checking hyper v0.14.17
[INFO] [stderr]     Checking sloggers v1.0.1
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking reqwest v0.11.10
[INFO] [stderr]     Checking cloudflare v0.9.1 (https://github.com/cloudflare/cloudflare-rs#2793ff07)
[INFO] [stderr]  Documenting cloudflare-ddns v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(ip)]
[INFO] [stdout]   |            ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `cloudflare-ddns`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name cloudflare_ddns src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=945881bccb732cbb -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-ee185080059e5b20.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-1069dd71eee7c00c.rmeta --extern cloudflare=/opt/rustwide/target/debug/deps/libcloudflare-0227d7df8a511c6b.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-40f655ff5fde8443.rmeta --extern ipnetwork=/opt/rustwide/target/debug/deps/libipnetwork-bdf711464a2ed182.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-89f42090f21e9644.rmeta --extern pnet=/opt/rustwide/target/debug/deps/libpnet-addc6420f02aac04.rmeta --extern reqwest=/opt/rustwide/target/debug/deps/libreqwest-26753bd6dc998f01.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-73449622510ae2e5.rmeta --extern serde_yaml=/opt/rustwide/target/debug/deps/libserde_yaml-c386f9de8a62a742.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-08b0ff8b286fb379.rmeta --cap-lints=warn --crate-version 0.4.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "d4dbfb8d4a4e47a72f9cf318030fbb4c68711c0aeb7c3bb22ce95e741543f5ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4dbfb8d4a4e47a72f9cf318030fbb4c68711c0aeb7c3bb22ce95e741543f5ea", kill_on_drop: false }`
[INFO] [stdout] d4dbfb8d4a4e47a72f9cf318030fbb4c68711c0aeb7c3bb22ce95e741543f5ea