[INFO] fetching crate syslog_rfc3164 0.1.0...
[INFO] documenting syslog_rfc3164-0.1.0 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] extracting crate syslog_rfc3164 0.1.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate syslog_rfc3164 0.1.0 on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "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-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+1.69.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded timeit v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 33240b6e1531c55b90aa53fbb1b9aea364b569d393e3ff7b6e357e9a7b46caa2
[INFO] running `Command { std: "docker" "start" "-a" "33240b6e1531c55b90aa53fbb1b9aea364b569d393e3ff7b6e357e9a7b46caa2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "33240b6e1531c55b90aa53fbb1b9aea364b569d393e3ff7b6e357e9a7b46caa2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33240b6e1531c55b90aa53fbb1b9aea364b569d393e3ff7b6e357e9a7b46caa2", kill_on_drop: false }`
[INFO] [stdout] 33240b6e1531c55b90aa53fbb1b9aea364b569d393e3ff7b6e357e9a7b46caa2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTFLAGS=--cap-lints=warn" "-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 52f757009001b932e5820ebb2b0d6cbbd0a1294bad4f00ad1ad907b195c9f6ac
[INFO] running `Command { std: "docker" "start" "-a" "52f757009001b932e5820ebb2b0d6cbbd0a1294bad4f00ad1ad907b195c9f6ac", kill_on_drop: false }`
[INFO] [stderr]     Checking assert_matches v1.5.0
[INFO] [stderr]    Compiling syn v2.0.15
[INFO] [stderr]     Checking time v0.1.45
[INFO] [stderr]    Compiling serde_derive v1.0.160
[INFO] [stderr]  Documenting syslog_rfc3164 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable 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: 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 `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=281420086bae216f -L dependency=/opt/rustwide/target/debug/deps --extern assert_matches=/opt/rustwide/target/debug/deps/libassert_matches-54ee6f67700b600e.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-b6956e1a4b2bd63a.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-1e3f81b92e3ccf1e.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-60e137dca47e7fe3.rmeta --extern time=/opt/rustwide/target/debug/deps/libtime-33e84ded0256f7c8.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "52f757009001b932e5820ebb2b0d6cbbd0a1294bad4f00ad1ad907b195c9f6ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52f757009001b932e5820ebb2b0d6cbbd0a1294bad4f00ad1ad907b195c9f6ac", kill_on_drop: false }`
[INFO] [stdout] 52f757009001b932e5820ebb2b0d6cbbd0a1294bad4f00ad1ad907b195c9f6ac
