[INFO] fetching crate ddns-rs 0.1.1...
[INFO] documenting ddns-rs-0.1.1 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate ddns-rs 0.1.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate ddns-rs 0.1.1 on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-3/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-3/source/rust-toolchain
[INFO] started tweaking crates.io crate ddns-rs 0.1.1
[INFO] finished tweaking crates.io crate ddns-rs 0.1.1
[INFO] tweaked toml for crates.io crate ddns-rs 0.1.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate ddns-rs 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+beta-2022-05-20" "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] b804fbf0627058a8f1c7d6d3108cdde3692f0467dfb70d79221d468b20de146e
[INFO] running `Command { std: "docker" "start" "-a" "b804fbf0627058a8f1c7d6d3108cdde3692f0467dfb70d79221d468b20de146e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b804fbf0627058a8f1c7d6d3108cdde3692f0467dfb70d79221d468b20de146e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b804fbf0627058a8f1c7d6d3108cdde3692f0467dfb70d79221d468b20de146e", kill_on_drop: false }`
[INFO] [stdout] b804fbf0627058a8f1c7d6d3108cdde3692f0467dfb70d79221d468b20de146e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+beta-2022-05-20" "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] 943cbbeae5c37a0bbf25410aeb17e0e8e06aca5c5316eea23519ec08303109a9
[INFO] running `Command { std: "docker" "start" "-a" "943cbbeae5c37a0bbf25410aeb17e0e8e06aca5c5316eea23519ec08303109a9", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling libc v0.2.124
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]     Checking pin-project-lite v0.2.8
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling parking_lot_core v0.9.2
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]     Checking once_cell v1.10.0
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking slab v0.4.6
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking futures-io v0.3.21
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]    Compiling native-tls v0.2.10
[INFO] [stderr]     Checking openssl-probe v0.1.5
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling httparse v1.7.0
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]     Checking unicode-bidi v0.3.7
[INFO] [stderr]     Checking httpdate v1.0.2
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]     Checking pnet_base v0.29.0
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling anyhow v1.0.57
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]    Compiling async-trait v0.1.53
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling encoding_rs v0.8.31
[INFO] [stderr]    Compiling rustversion v1.0.6
[INFO] [stderr]     Checking tower-service v0.3.1
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]    Compiling pnet v0.29.0
[INFO] [stderr]     Checking minimal-lexical v0.2.1
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking psl-types v2.0.10
[INFO] [stderr]     Checking data-encoding v2.3.2
[INFO] [stderr]     Checking ipnet v2.5.0
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]     Checking arc-swap v1.5.0
[INFO] [stderr]     Checking log-mdc v0.1.0
[INFO] [stderr]     Checking boxfnonce v0.1.1
[INFO] [stderr]     Checking fastrand v1.7.0
[INFO] [stderr]     Checking quoted_printable v0.4.5
[INFO] [stderr]     Checking sd-notify v0.3.0
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling indexmap v1.8.1
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]     Checking tracing-core v0.1.26
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]     Checking http v0.2.6
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling openssl-sys v0.9.72
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking pnet_macros_support v0.29.0
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]     Checking email-encoding v0.1.0
[INFO] [stderr]     Checking unsafe-any v0.4.2
[INFO] [stderr]     Checking psl v2.0.87
[INFO] [stderr]     Checking clap_lex v0.1.1
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking object v0.28.3
[INFO] [stderr]     Checking nom v4.1.1
[INFO] [stderr]     Checking nom v7.1.1
[INFO] [stderr]     Checking typemap v0.3.3
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking getrandom v0.2.6
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking pnet_sys v0.29.0
[INFO] [stderr]     Checking thread-id v4.0.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking hostname v0.3.1
[INFO] [stderr]     Checking daemonize v0.4.1
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]    Compiling openssl v0.10.38
[INFO] [stderr]     Checking parking_lot v0.12.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking http-body v0.4.4
[INFO] [stderr]     Checking ordered-float v2.10.0
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking backtrace v0.3.65
[INFO] [stderr]     Checking addr v0.15.3
[INFO] [stderr]    Compiling darling_core v0.13.4
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling tracing-attributes v0.1.20
[INFO] [stderr]    Compiling pnet_macros v0.29.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling clap_derive v3.1.7
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling maud_macros v0.23.0
[INFO] [stderr]    Compiling darling_macro v0.13.4
[INFO] [stderr]     Checking maud v0.23.0
[INFO] [stderr]    Compiling darling v0.13.4
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]    Compiling serde_with_macros v1.5.2
[INFO] [stderr]     Checking tracing v0.1.34
[INFO] [stderr]     Checking pnet_packet v0.29.0
[INFO] [stderr]     Checking clap v3.1.12
[INFO] [stderr]     Checking futures-executor v0.3.21
[INFO] [stderr]     Checking futures v0.3.21
[INFO] [stderr]     Checking pnet_transport v0.29.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking ipnetwork v0.18.0
[INFO] [stderr]     Checking serde_yaml v0.8.23
[INFO] [stderr]     Checking serde_qs v0.4.6
[INFO] [stderr]     Checking serde-value v0.7.0
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking serde_with v1.13.0
[INFO] [stderr]     Checking path-value v0.1.5
[INFO] [stderr]     Checking toml v0.5.9
[INFO] [stderr]     Checking pnet_datalink v0.29.0
[INFO] [stderr]     Checking mio v0.8.2
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking cron v0.9.0
[INFO] [stderr]     Checking tokio v1.17.0
[INFO] [stderr]     Checking log4rs v1.1.1
[INFO] [stderr]     Checking tokio-util v0.7.1
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking lettre v0.10.0-rc.5
[INFO] [stderr]     Checking h2 v0.3.13
[INFO] [stderr]     Checking hyper v0.14.18
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking reqwest v0.11.10
[INFO] [stderr]     Checking cloudflare v0.9.1
[INFO] [stderr]  Documenting ddns-rs v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(ip)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(async_closure)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 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 `ddns-rs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ddns_rs src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=1cce2c70eff04af8 -L dependency=/opt/rustwide/target/debug/deps --extern addr=/opt/rustwide/target/debug/deps/libaddr-a66ac321f5c2537d.rmeta --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-0657bc08aa8032ee.rmeta --extern async_trait=/opt/rustwide/target/debug/deps/libasync_trait-5591e532d2b45a89.so --extern chrono=/opt/rustwide/target/debug/deps/libchrono-ec46ec825605307b.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-29693b91d03ffe38.rmeta --extern cloudflare=/opt/rustwide/target/debug/deps/libcloudflare-824a7a1b4ba53537.rmeta --extern cron=/opt/rustwide/target/debug/deps/libcron-94c2ca4511875464.rmeta --extern daemonize=/opt/rustwide/target/debug/deps/libdaemonize-8899c954d153cd6f.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-7294cccd23e0852b.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-701e134f05ff346a.rmeta --extern lettre=/opt/rustwide/target/debug/deps/liblettre-32feafc110745ba9.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-1779aeddcebf84b6.rmeta --extern log4rs=/opt/rustwide/target/debug/deps/liblog4rs-64932632e6f7cf07.rmeta --extern maud=/opt/rustwide/target/debug/deps/libmaud-767f121cbfe7ea8b.rmeta --extern path_value=/opt/rustwide/target/debug/deps/libpath_value-5848b11d78b1e130.rmeta --extern pnet=/opt/rustwide/target/debug/deps/libpnet-99263c6f3c91ef71.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-6e97c96af692a14a.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-72cb778170d0dad5.rmeta --extern reqwest=/opt/rustwide/target/debug/deps/libreqwest-6013b9adaecccba4.rmeta --extern sd_notify=/opt/rustwide/target/debug/deps/libsd_notify-8c235a9ca194c112.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-3a3b0b93f6d6b3c0.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-c85a629125a8b9dd.rmeta --extern serde_yaml=/opt/rustwide/target/debug/deps/libserde_yaml-0d015664ccfae3dd.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-9af78b14dd290679.rmeta --extern toml=/opt/rustwide/target/debug/deps/libtoml-0fcbdc2c95b9d77f.rmeta --cap-lints=warn --crate-version 0.1.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "943cbbeae5c37a0bbf25410aeb17e0e8e06aca5c5316eea23519ec08303109a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "943cbbeae5c37a0bbf25410aeb17e0e8e06aca5c5316eea23519ec08303109a9", kill_on_drop: false }`
[INFO] [stdout] 943cbbeae5c37a0bbf25410aeb17e0e8e06aca5c5316eea23519ec08303109a9