[INFO] fetching crate bitcask-rs 0.1.1...
[INFO] documenting bitcask-rs-0.1.1 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate bitcask-rs 0.1.1 into /workspace/builds/worker-88/source
[INFO] validating manifest of crates.io crate bitcask-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] 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-88/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/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] 666779cf7b6ce4b441aaac11241fd4b324985482a22e590c93d6ca273885bb99
[INFO] running `Command { std: "docker" "start" "-a" "666779cf7b6ce4b441aaac11241fd4b324985482a22e590c93d6ca273885bb99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "666779cf7b6ce4b441aaac11241fd4b324985482a22e590c93d6ca273885bb99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "666779cf7b6ce4b441aaac11241fd4b324985482a22e590c93d6ca273885bb99", kill_on_drop: false }`
[INFO] [stdout] 666779cf7b6ce4b441aaac11241fd4b324985482a22e590c93d6ca273885bb99
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/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] 6d8b3facec353f8e835d8651430039242267141ebc046c94bbae1044ad1bb7bc
[INFO] running `Command { std: "docker" "start" "-a" "6d8b3facec353f8e835d8651430039242267141ebc046c94bbae1044ad1bb7bc", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling serde_json v1.0.81
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]    Compiling unicode-xid v0.2.3
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]    Compiling derive_builder v0.5.1
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking log-mdc v0.1.0
[INFO] [stderr]     Checking arc-swap v0.3.11
[INFO] [stderr]     Checking antidote v1.0.0
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking integer-encoding v1.1.7
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking unsafe-any v0.4.2
[INFO] [stderr]     Checking miniz_oxide v0.5.1
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking typemap v0.3.3
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling indexmap v1.8.2
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking flate2 v1.0.24
[INFO] [stderr]     Checking object v0.28.4
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling backtrace v0.3.65
[INFO] [stderr]     Checking getrandom v0.2.6
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking thread-id v3.3.0
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking io-at v0.4.1
[INFO] [stderr]    Compiling derive_builder_core v0.2.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking uuid v0.6.5
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]     Checking ordered-float v1.1.1
[INFO] [stderr]     Checking twox-hash v1.6.3
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]     Checking serde_yaml v0.8.24
[INFO] [stderr]     Checking serde-value v0.5.3
[INFO] [stderr]     Checking failure v0.1.8
[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 beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(nll)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta 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: 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 `bitcask-rs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `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=94fb75919bd52336 -L dependency=/opt/rustwide/target/debug/deps --extern derive_builder=/opt/rustwide/target/debug/deps/libderive_builder-88ea071b7b2e6036.so --extern failure=/opt/rustwide/target/debug/deps/libfailure-0734a48664d9bf75.rmeta --extern integer_encoding=/opt/rustwide/target/debug/deps/libinteger_encoding-bb5332450697deff.rmeta --extern io_at=/opt/rustwide/target/debug/deps/libio_at-6c9848817c331975.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-812afb2bbbaae3f5.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-701e134f05ff346a.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-82b0d29aeb1493d0.rmeta --extern log4rs=/opt/rustwide/target/debug/deps/liblog4rs-0833dd266e493314.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-e476269e45cbb2c7.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-dbdb529db862b224.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-ba29cce5da625134.so --extern serde_yaml=/opt/rustwide/target/debug/deps/libserde_yaml-1dbc1c429ca15d90.rmeta --extern twox_hash=/opt/rustwide/target/debug/deps/libtwox_hash-d93d023fd8f8b664.rmeta --extern uuid=/opt/rustwide/target/debug/deps/libuuid-ec7a48f80a76418a.rmeta --cap-lints=warn --crate-version 0.1.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "6d8b3facec353f8e835d8651430039242267141ebc046c94bbae1044ad1bb7bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d8b3facec353f8e835d8651430039242267141ebc046c94bbae1044ad1bb7bc", kill_on_drop: false }`
[INFO] [stdout] 6d8b3facec353f8e835d8651430039242267141ebc046c94bbae1044ad1bb7bc