[INFO] fetching crate websocket-rs 0.1.4...
[INFO] documenting websocket-rs-0.1.4 against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate websocket-rs 0.1.4 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate websocket-rs 0.1.4 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate websocket-rs 0.1.4
[INFO] finished tweaking crates.io crate websocket-rs 0.1.4
[INFO] tweaked toml for crates.io crate websocket-rs 0.1.4 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fe35b0b8a2a70df02ce6e979b5917acd01ba65633cf48806091b8e1390328e52
[INFO] running `Command { std: "docker" "start" "-a" "fe35b0b8a2a70df02ce6e979b5917acd01ba65633cf48806091b8e1390328e52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe35b0b8a2a70df02ce6e979b5917acd01ba65633cf48806091b8e1390328e52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe35b0b8a2a70df02ce6e979b5917acd01ba65633cf48806091b8e1390328e52", kill_on_drop: false }`
[INFO] [stdout] fe35b0b8a2a70df02ce6e979b5917acd01ba65633cf48806091b8e1390328e52
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0c9fea48d0cb5f366e58ef0f85c2d3acb429caf87339c51af9db0168bf16abaa
[INFO] running `Command { std: "docker" "start" "-a" "0c9fea48d0cb5f366e58ef0f85c2d3acb429caf87339c51af9db0168bf16abaa", kill_on_drop: false }`
[INFO] [stderr]     Checking sharded-slab v0.1.3
[INFO] [stderr]     Checking tracing-log v0.1.2
[INFO] [stderr]     Checking tracing-serde v0.1.2
[INFO] [stderr]    Compiling tracing-attributes v0.1.15
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking futures-util v0.3.16
[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]     Checking tracing v0.1.26
[INFO] [stderr]     Checking tracing-subscriber v0.2.19
[INFO] [stderr]     Checking tracing-futures v0.2.5
[INFO] [stderr]     Checking futures-executor v0.3.16
[INFO] [stderr]     Checking futures v0.3.16
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]  Documenting websocket-rs v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[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 `websocket-rs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name websocket_rs src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern base64=/opt/rustwide/target/debug/deps/libbase64-ea7559d52c89b04b.rmeta --extern bytes=/opt/rustwide/target/debug/deps/libbytes-be6cb9a7be86933c.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-2b72d4cbba9a96ad.rmeta --extern http=/opt/rustwide/target/debug/deps/libhttp-50f6418a29af91f1.rmeta --extern sha1=/opt/rustwide/target/debug/deps/libsha1-9533537af209c6e2.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-12257082858177a0.rmeta --extern tokio_util=/opt/rustwide/target/debug/deps/libtokio_util-9030c1558b7863a5.rmeta --extern tracing=/opt/rustwide/target/debug/deps/libtracing-bbfd0b5c89c9f1ee.rmeta --extern tracing_futures=/opt/rustwide/target/debug/deps/libtracing_futures-8d109efdfa229343.rmeta --extern tracing_subscriber=/opt/rustwide/target/debug/deps/libtracing_subscriber-41b7b4583be8af40.rmeta --cap-lints=warn --crate-version 0.1.4` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "0c9fea48d0cb5f366e58ef0f85c2d3acb429caf87339c51af9db0168bf16abaa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c9fea48d0cb5f366e58ef0f85c2d3acb429caf87339c51af9db0168bf16abaa", kill_on_drop: false }`
[INFO] [stdout] 0c9fea48d0cb5f366e58ef0f85c2d3acb429caf87339c51af9db0168bf16abaa
