[INFO] fetching crate syslog_rfc3164 0.1.0...
[INFO] documenting syslog_rfc3164-0.1.0 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate syslog_rfc3164 0.1.0 into /workspace/builds/worker-18/source
[INFO] validating manifest of crates.io crate syslog_rfc3164 0.1.0 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] started tweaking crates.io crate syslog_rfc3164 0.1.0
[INFO] finished tweaking crates.io crate syslog_rfc3164 0.1.0
[INFO] tweaked toml for crates.io crate syslog_rfc3164 0.1.0 written to /workspace/builds/worker-18/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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] [stdout] 4cb510a05997050123200c6f0cb60aaf331f62a7f6dad6e7edc731dafe32453e
[INFO] running `Command { std: "docker" "start" "-a" "4cb510a05997050123200c6f0cb60aaf331f62a7f6dad6e7edc731dafe32453e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4cb510a05997050123200c6f0cb60aaf331f62a7f6dad6e7edc731dafe32453e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4cb510a05997050123200c6f0cb60aaf331f62a7f6dad6e7edc731dafe32453e", kill_on_drop: false }`
[INFO] [stdout] 4cb510a05997050123200c6f0cb60aaf331f62a7f6dad6e7edc731dafe32453e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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] [stdout] 603e2032f262f519efa4275522d5f7ad563a2c05f68db1a7eb775f79d825f11b
[INFO] running `Command { std: "docker" "start" "-a" "603e2032f262f519efa4275522d5f7ad563a2c05f68db1a7eb775f79d825f11b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling serde_json v1.0.81
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]     Checking assert_matches v1.5.0
[INFO] [stderr]     Checking libc v0.2.126
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]  Documenting syslog_rfc3164 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:33:1
[INFO] [stdout]    |
[INFO] [stdout] 33 | #![feature(match_default_bindings)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]    |
[INFO] [stdout]    = help: the feature `match_default_bindings` has been stable since 1.26.0 and no longer requires an attribute to enable
[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 `syslog_rfc3164`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name syslog_rfc3164 src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=d24a5e40d5818ce6 -L dependency=/opt/rustwide/target/debug/deps --extern assert_matches=/opt/rustwide/target/debug/deps/libassert_matches-ebb092e59eff159e.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-dbdb529db862b224.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-864a219f4e4f97f4.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-9b5e22c1651a5e61.rmeta --extern time=/opt/rustwide/target/debug/deps/libtime-7c405ab17cb1dcbd.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "603e2032f262f519efa4275522d5f7ad563a2c05f68db1a7eb775f79d825f11b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "603e2032f262f519efa4275522d5f7ad563a2c05f68db1a7eb775f79d825f11b", kill_on_drop: false }`
[INFO] [stdout] 603e2032f262f519efa4275522d5f7ad563a2c05f68db1a7eb775f79d825f11b