[INFO] fetching crate polars_arrow_rvsry99dx 0.17.1...
[INFO] documenting polars_arrow_rvsry99dx-0.17.1 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] extracting crate polars_arrow_rvsry99dx 0.17.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate polars_arrow_rvsry99dx 0.17.1 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 polars_arrow_rvsry99dx 0.17.1
[INFO] finished tweaking crates.io crate polars_arrow_rvsry99dx 0.17.1
[INFO] tweaked toml for crates.io crate polars_arrow_rvsry99dx 0.17.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate polars_arrow_rvsry99dx 0.17.1 already has a lockfile, it will not be regenerated
[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 flatbuffers v0.6.1
[INFO] [stderr]   Downloaded criterion-plot v0.4.2
[INFO] [stderr]   Downloaded packed_simd v0.3.3
[INFO] [stderr]   Downloaded serde_json v1.0.55
[INFO] [stderr]   Downloaded criterion v0.3.2
[INFO] [stderr]   Downloaded flate2 v1.0.14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 4a1e1f82b67e69ecb95802d271feec022ea8dfe50f1522f496e6125ea5663b4b
[INFO] running `Command { std: "docker" "start" "-a" "4a1e1f82b67e69ecb95802d271feec022ea8dfe50f1522f496e6125ea5663b4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4a1e1f82b67e69ecb95802d271feec022ea8dfe50f1522f496e6125ea5663b4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a1e1f82b67e69ecb95802d271feec022ea8dfe50f1522f496e6125ea5663b4b", kill_on_drop: false }`
[INFO] [stdout] 4a1e1f82b67e69ecb95802d271feec022ea8dfe50f1522f496e6125ea5663b4b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 547041c90f1975d69bf828ee8708cb1db99d07883190c7e52c22c644c1876067
[INFO] running `Command { std: "docker" "start" "-a" "547041c90f1975d69bf828ee8708cb1db99d07883190c7e52c22c644c1876067", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]     Checking ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling serde_json v1.0.55
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking smallvec v1.4.0
[INFO] [stderr]     Checking encode_unicode v0.3.6
[INFO] [stderr]     Checking hex v0.4.2
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling indexmap v1.4.0
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]     Checking flatbuffers v0.6.1
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking aho-corasick v0.7.13
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking term v0.5.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking bstr v0.2.13
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]     Checking prettytable-rs v0.8.0
[INFO] [stderr]  Documenting polars_arrow_rvsry99dx v0.17.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:24:1
[INFO] [stdout]    |
[INFO] [stdout] 24 | #![feature(specialization)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes
[INFO] [stdout]   --> src/lib.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | #![feature(specialization)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]    = help: consider using `min_specialization` instead, which is more stable and complete
[INFO] [stdout]    = note: `#[warn(incomplete_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `polars_arrow_rvsry99dx`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name polars_arrow_rvsry99dx src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --cfg 'feature="prettyprint"' --cfg 'feature="prettytable-rs"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=68befaaa29c6394f -L dependency=/opt/rustwide/target/debug/deps --extern chrono=/opt/rustwide/target/debug/deps/libchrono-58d2bfa702062cf0.rmeta --extern csv=/opt/rustwide/target/debug/deps/libcsv-17a497efdba3edd9.rmeta --extern flatbuffers=/opt/rustwide/target/debug/deps/libflatbuffers-41907c109a0c51a2.rmeta --extern hex=/opt/rustwide/target/debug/deps/libhex-24a2ffc4bff8a019.rmeta --extern indexmap=/opt/rustwide/target/debug/deps/libindexmap-7cae7db5da2eb3a3.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-9c7d51f549cf58b7.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-6976d75cc43ded7d.rmeta --extern prettytable=/opt/rustwide/target/debug/deps/libprettytable-7282fbbda2832461.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-c71819c6c5d874b7.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-04a8e9213e110f11.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-9078cc6d731b3f11.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-0eafd0063d525195.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-b73ec78c12b6d776.rmeta --cap-lints=warn --crate-version 0.17.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "547041c90f1975d69bf828ee8708cb1db99d07883190c7e52c22c644c1876067", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "547041c90f1975d69bf828ee8708cb1db99d07883190c7e52c22c644c1876067", kill_on_drop: false }`
[INFO] [stdout] 547041c90f1975d69bf828ee8708cb1db99d07883190c7e52c22c644c1876067
