Rust documentation for polars-plan broken since 0.40

[datapythonista]

Checks

• I have checked that this issue has not already been reported.
• I have confirmed this bug exists on the latest version of Polars.

Reproducible example

See https://docs.rs/crate/polars-plan/0.41.2

Last working version seems to be https://docs.rs/crate/polars-plan/0.39.2

Log output

https://docs.rs/crate/polars-plan/0.41.2/builds/1259470


# rustc version
rustc 1.81.0-nightly (bcf94dec5 2024-06-23)# docs.rs version
docsrs 0.6.0 (34981d90 2024-06-23)# build log
[INFO] running `Command { std: "docker" "create" "-v" "/home/cratesfyi/workspace-builder/builds/polars-plan-0.41.2/target:/opt/rustwide/target:rw,Z" "-v" "/home/cratesfyi/workspace-builder/builds/polars-plan-0.41.2/source:/opt/rustwide/workdir:ro,Z" "-v" "/home/cratesfyi/workspace-builder/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/home/cratesfyi/workspace-builder/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "DOCS_RS=1" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "6442450944" "--cpus" "6" "--user" "1001:1001" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "rustdoc" "--lib" "-Zrustdoc-map" "--features" "approx_n_unique temporal serde rolling_window rolling_window_by timezones dtype-date extract_groups dtype-datetime asof_join dtype-duration is_first_distinct pivot dtype-array is_last_distinct dtype-time array_any_all month_start month_end offset_by parquet strings row_hash json python cloud string_to_integer list_any_all pct_change list_gather dtype-i16 round_series cutqcut async ewma ewma_by random chunked_ids repeat_by is_in log string_reverse list_sets propagate_nans mode rank hist object approx_unique dtype-categorical merge_sorted bigidx cov list_sample dtype-i8 fused binary_encoding list_drop_nulls fmt list_to_struct string_pad diff rle is_unique find_many string_encoding ipc search_sorted unique_counts dtype-u8 dtype-struct peaks abs interpolate interpolate_by list_count cum_agg top_k moment semi_anti_join replace dtype-u16 regex ciborium dtype-decimal arg_where business range meta hive_partitions concat_str coalesce dot_diagram trigonometry streaming true_div sign" "--config" "build.rustdocflags=[\"--cfg\", \"docsrs\", \"--cfg\", \"docsrs\", \"-Z\", \"unstable-options\", \"--emit=invocation-specific\", \"--resource-suffix\", \"-20240623-1.81.0-nightly-bcf94dec5\", \"--static-root-path\", \"/-/rustdoc.static/\", \"--cap-lints\", \"warn\", \"--extern-html-root-takes-precedence\"]" "--offline" "-Zunstable-options" "--config=doc.extern-map.registries.crates-io=\"https://docs.rs/{pkg_name}/{version}/x86_64-unknown-linux-gnu\"" "-Zrustdoc-scrape-examples" "-j6" "--target" "x86_64-unknown-linux-gnu", kill_on_drop: false }`
[INFO] [stdout] 52bd7343c5e66f0ae00d6b879174feff6604132d1fd453127a584881a423b482
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "52bd7343c5e66f0ae00d6b879174feff6604132d1fd453127a584881a423b482", kill_on_drop: false }`
[INFO] [stderr] error: none of the selected packages contains these features: approx_n_unique
[INFO] running `Command { std: "docker" "inspect" "52bd7343c5e66f0ae00d6b879174feff6604132d1fd453127a584881a423b482", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52bd7343c5e66f0ae00d6b879174feff6604132d1fd453127a584881a423b482", kill_on_drop: false }`
[INFO] [stdout] 52bd7343c5e66f0ae00d6b879174feff6604132d1fd453127a584881a423b482

### Issue description

Doc build broken, not sure about the reason, if I have to guess maybe related to not enough resources in the worker?

### Expected behavior

Docs should build

### Installed versions

Not relevant

[ritchie46]

This feature combination fails: https://docs.rs/crate/polars-plan/0.41.2/builds/1259470

"--features" "approx_n_unique temporal serde rolling_window rolling_window_by timezones dtype-date extract_groups dtype-datetime asof_join dtype-duration is_first_distinct pivot dtype-array is_last_distinct dtype-time array_any_all month_start month_end offset_by parquet strings row_hash json python cloud string_to_integer list_any_all pct_change list_gather dtype-i16 round_series cutqcut async ewma ewma_by random chunked_ids repeat_by is_in log string_reverse list_sets propagate_nans mode rank hist object approx_unique dtype-categorical merge_sorted bigidx cov list_sample dtype-i8 fused binary_encoding list_drop_nulls fmt list_to_struct string_pad diff rle is_unique find_many string_encoding ipc search_sorted unique_counts dtype-u8 dtype-struct peaks abs interpolate interpolate_by list_count cum_agg top_k moment semi_anti_join replace dtype-u16 regex ciborium dtype-decimal arg_where business range meta hive_partitions concat_str coalesce dot_diagram trigonometry streaming true_div sign