[INFO] cloning repository https://github.com/realVilmos/Rust-Backend
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/realVilmos/Rust-Backend" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FrealVilmos%2FRust-Backend", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FrealVilmos%2FRust-Backend'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fa9f23f95f1b64d79a12680f8dcc942ab8c811d3
[INFO] checking realVilmos/Rust-Backend against master#b52edc25bfbaa955b4b83c10f998e5224c3478b2 for pr-156776
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FrealVilmos%2FRust-Backend" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/realVilmos/Rust-Backend
[INFO] finished tweaking git repo https://github.com/realVilmos/Rust-Backend
[INFO] tweaked toml for git repo https://github.com/realVilmos/Rust-Backend written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/realVilmos/Rust-Backend on toolchain b52edc25bfbaa955b4b83c10f998e5224c3478b2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b52edc25bfbaa955b4b83c10f998e5224c3478b2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/realVilmos/Rust-Backend 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" "+b52edc25bfbaa955b4b83c10f998e5224c3478b2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: failed to select a version for `polars`.
[INFO] [stderr]     ... required by package `Rust-Backend v0.1.0 (/workspace/builds/worker-5-tc1/source)`
[INFO] [stderr] versions that meet the requirements `^0.38` are: 0.38.3, 0.38.2, 0.38.1, 0.38.0
[INFO] [stderr] 
[INFO] [stderr] package `Rust-Backend` depends on `polars` with feature `csv-file` but `polars` does not have that feature.
[INFO] [stderr] help: available features: abs, approx_unique, arg_where, array_any_all, array_count, array_to_struct, asof_join, async, avro, avx512, aws, azure, bench, bigidx, binary_encoding, checked_arithmetic, chunked_ids, cloud, cloud_write, coalesce, concat_str, cov, cross_join, cse, csv, cum_agg, cumulative_eval, cutqcut, dataframe_arithmetic, date_offset, decompress, decompress-fast, default, describe, diagonal_concat, diff, docs, docs-selection, dot_diagram, dot_product, dtype-array, dtype-categorical, dtype-date, dtype-datetime, dtype-decimal, dtype-duration, dtype-full, dtype-i16, dtype-i8, dtype-slim, dtype-struct, dtype-time, dtype-u16, dtype-u8, dynamic_group_by, ewma, extract_groups, extract_jsonpath, find_many, fmt, fmt_no_tty, fused, gcp, group_by_list, hist, http, interpolate, ipc, ipc_streaming, is_between, is_first_distinct, is_in, is_last_distinct, is_unique, json, lazy, list_any_all, list_count, list_drop_nulls, list_eval, list_gather, list_sample, list_sets, list_to_struct, log, merge_sorted, meta, mode, moment, ndarray, nightly, object, parquet, partition_by, pct_change, peaks, performant, pivot, polars-io, polars-lazy, polars-ops, polars-plan, polars-sql, polars-time, product, propagate_nans, random, range, rank, regex, reinterpret, repeat_by, replace, rle, rolling_window, round_series, row_hash, rows, search_sorted, semi_anti_join, serde, serde-lazy, sign, simd, sql, streaming, string_encoding, string_pad, string_reverse, string_to_integer, strings, take_opt_iter, temporal, test, timezones, to_dummies, top_k, trigonometry, true_div, unique_counts, zip_with
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `polars` which could resolve this conflict


overridden task result to prepare-fail:unknown

Caused by:
    0: uncategorized prepare error
    1: command failed: exit status: 101
       
           Blocking waiting for file lock on package cache
           Updating crates.io index
       error: failed to select a version for `polars`.
           ... required by package `Rust-Backend v0.1.0 (/workspace/builds/worker-5-tc1/source)`
       versions that meet the requirements `^0.38` are: 0.38.3, 0.38.2, 0.38.1, 0.38.0
       
       package `Rust-Backend` depends on `polars` with feature `csv-file` but `polars` does not have that feature.
       help: available features: abs, approx_unique, arg_where, array_any_all, array_count, array_to_struct, asof_join, async, avro, avx512, aws, azure, bench, bigidx, binary_encoding, checked_arithmetic, chunked_ids, cloud, cloud_write, coalesce, concat_str, cov, cross_join, cse, csv, cum_agg, cumulative_eval, cutqcut, dataframe_arithmetic, date_offset, decompress, decompress-fast, default, describe, diagonal_concat, diff, docs, docs-selection, dot_diagram, dot_product, dtype-array, dtype-categorical, dtype-date, dtype-datetime, dtype-decimal, dtype-duration, dtype-full, dtype-i16, dtype-i8, dtype-slim, dtype-struct, dtype-time, dtype-u16, dtype-u8, dynamic_group_by, ewma, extract_groups, extract_jsonpath, find_many, fmt, fmt_no_tty, fused, gcp, group_by_list, hist, http, interpolate, ipc, ipc_streaming, is_between, is_first_distinct, is_in, is_last_distinct, is_unique, json, lazy, list_any_all, list_count, list_drop_nulls, list_eval, list_gather, list_sample, list_sets, list_to_struct, log, merge_sorted, meta, mode, moment, ndarray, nightly, object, parquet, partition_by, pct_change, peaks, performant, pivot, polars-io, polars-lazy, polars-ops, polars-plan, polars-sql, polars-time, product, propagate_nans, random, range, rank, regex, reinterpret, repeat_by, replace, rle, rolling_window, round_series, row_hash, rows, search_sorted, semi_anti_join, serde, serde-lazy, sign, simd, sql, streaming, string_encoding, string_pad, string_reverse, string_to_integer, strings, take_opt_iter, temporal, test, timezones, to_dummies, top_k, trigonometry, true_div, unique_counts, zip_with
       
       
       failed to select a version for `polars` which could resolve this conflict