[INFO] fetching crate bitcask-rs 0.1.1...
[INFO] documenting bitcask-rs-0.1.1 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate bitcask-rs 0.1.1 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate bitcask-rs 0.1.1 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bitcask-rs 0.1.1
[INFO] finished tweaking crates.io crate bitcask-rs 0.1.1
[INFO] tweaked toml for crates.io crate bitcask-rs 0.1.1 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded thread-id v3.3.0
[INFO] [stderr]   Downloaded log4rs v0.8.3
[INFO] [stderr]   Downloaded itertools v0.7.11
[INFO] [stderr]   Downloaded derive_builder v0.5.1
[INFO] [stderr]   Downloaded derive_builder_core v0.2.0
[INFO] [stderr]   Downloaded integer-encoding v1.1.7
[INFO] [stderr]   Downloaded arc-swap v0.3.11
[INFO] [stderr]   Downloaded io-at v0.4.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 254896180d18e85ab7b4159a0e32589bb81420c9c6fdbd93636bcd4036f923f9
[INFO] running `Command { std: "docker" "start" "-a" "254896180d18e85ab7b4159a0e32589bb81420c9c6fdbd93636bcd4036f923f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "254896180d18e85ab7b4159a0e32589bb81420c9c6fdbd93636bcd4036f923f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "254896180d18e85ab7b4159a0e32589bb81420c9c6fdbd93636bcd4036f923f9", kill_on_drop: false }`
[INFO] [stdout] 254896180d18e85ab7b4159a0e32589bb81420c9c6fdbd93636bcd4036f923f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a42efc08f4746ac5c3e673314c832632d5b124fd39b7dc4c80e60ad13843ccf7
[INFO] running `Command { std: "docker" "start" "-a" "a42efc08f4746ac5c3e673314c832632d5b124fd39b7dc4c80e60ad13843ccf7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking ordered-float v1.1.1
[INFO] [stderr]    Compiling derive_builder v0.5.1
[INFO] [stderr]     Checking iana-time-zone v0.1.59
[INFO] [stderr]     Checking backtrace v0.3.69
[INFO] [stderr]     Checking unsafe-any v0.4.2
[INFO] [stderr]     Checking typemap v0.3.3
[INFO] [stderr]     Checking chrono v0.4.31
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking serde-value v0.5.3
[INFO] [stderr]     Checking serde_json v1.0.111
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]     Checking serde_yaml v0.8.26
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]     Checking thread-id v3.3.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking log-mdc v0.1.0
[INFO] [stderr]    Compiling derive_builder_core v0.2.0
[INFO] [stderr]     Checking arc-swap v0.3.11
[INFO] [stderr]     Checking antidote v1.0.0
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking uuid v0.6.5
[INFO] [stderr]     Checking twox-hash v1.6.3
[INFO] [stderr]     Checking io-at v0.4.1
[INFO] [stderr]     Checking integer-encoding v1.1.7
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]    Compiling serde_derive v1.0.195
[INFO] [stderr]     Checking log4rs v0.8.3
[INFO] [stderr]  Documenting bitcask-rs v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(nll)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `nll` has been stable since `1.63.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[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 `bitcask-rs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.75.0-x86_64-unknown-linux-gnu/bin/rustdoc --crate-type lib --crate-name bitcask_rs src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=567d2285e9cf5eb1 -L dependency=/opt/rustwide/target/debug/deps --extern derive_builder=/opt/rustwide/target/debug/deps/libderive_builder-3e335d631bd6b36f.so --extern failure=/opt/rustwide/target/debug/deps/libfailure-6fab4452dbdda1e8.rmeta --extern integer_encoding=/opt/rustwide/target/debug/deps/libinteger_encoding-9210cc570cc04e58.rmeta --extern io_at=/opt/rustwide/target/debug/deps/libio_at-165660a716ed55dc.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-8c59cba5a519d7fe.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-e7445b4e8703c20b.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-f681f39b26dce469.rmeta --extern log4rs=/opt/rustwide/target/debug/deps/liblog4rs-052ffa7dea322ecf.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-32b9f870004ccabd.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-d959715fe86d3f0d.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-4ae89e9e6fc2d629.so --extern serde_yaml=/opt/rustwide/target/debug/deps/libserde_yaml-ae217a8aa90db470.rmeta --extern twox_hash=/opt/rustwide/target/debug/deps/libtwox_hash-4ded46bf0cfb6f52.rmeta --extern uuid=/opt/rustwide/target/debug/deps/libuuid-e9790f997d3122e0.rmeta --cap-lints=warn --crate-version 0.1.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "a42efc08f4746ac5c3e673314c832632d5b124fd39b7dc4c80e60ad13843ccf7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a42efc08f4746ac5c3e673314c832632d5b124fd39b7dc4c80e60ad13843ccf7", kill_on_drop: false }`
[INFO] [stdout] a42efc08f4746ac5c3e673314c832632d5b124fd39b7dc4c80e60ad13843ccf7
