[INFO] fetching crate polars-serde 0.1.0...
[INFO] testing polars-serde-0.1.0 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate polars-serde 0.1.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate polars-serde 0.1.0
[INFO] finished tweaking crates.io crate polars-serde 0.1.0
[INFO] tweaked toml for crates.io crate polars-serde 0.1.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate polars-serde 0.1.0 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate polars-serde 0.1.0 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" "+beta-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f1e4fccd63c56cfe79466f4cf664f31224cf97c634324b51c7d487129d74518c
[INFO] running `Command { std: "docker" "start" "-a" "f1e4fccd63c56cfe79466f4cf664f31224cf97c634324b51c7d487129d74518c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f1e4fccd63c56cfe79466f4cf664f31224cf97c634324b51c7d487129d74518c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1e4fccd63c56cfe79466f4cf664f31224cf97c634324b51c7d487129d74518c", kill_on_drop: false }`
[INFO] [stdout] f1e4fccd63c56cfe79466f4cf664f31224cf97c634324b51c7d487129d74518c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4f0f04a1a6a8f029b6fd8e8d1854d8c91690e6bf2d79eb88bb9e9b5079fab2cd
[INFO] running `Command { std: "docker" "start" "-a" "4f0f04a1a6a8f029b6fd8e8d1854d8c91690e6bf2d79eb88bb9e9b5079fab2cd", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.19
[INFO] [stderr]    Compiling cc v1.2.41
[INFO] [stderr]    Compiling signal-hook v0.3.18
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling castaway v0.2.4
[INFO] [stderr]    Compiling polars-utils v0.51.0
[INFO] [stderr]    Compiling siphasher v1.0.1
[INFO] [stderr]    Compiling bitflags v2.9.4
[INFO] [stderr]    Compiling simdutf8 v0.1.5
[INFO] [stderr]    Compiling foldhash v0.1.5
[INFO] [stderr]    Compiling indexmap v2.12.0
[INFO] [stderr]    Compiling uuid v1.18.1
[INFO] [stderr]    Compiling polars-schema v0.51.0
[INFO] [stderr]    Compiling rayon v1.11.0
[INFO] [stderr]    Compiling chrono-tz v0.10.4
[INFO] [stderr]    Compiling chrono v0.4.42
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling polars-arrow v0.51.0
[INFO] [stderr]    Compiling phf_shared v0.12.1
[INFO] [stderr]    Compiling thiserror v2.0.17
[INFO] [stderr]    Compiling raw-cpuid v11.6.0
[INFO] [stderr]    Compiling streaming-iterator v0.1.9
[INFO] [stderr]    Compiling ethnum v1.5.2
[INFO] [stderr]    Compiling polars-compute v0.51.0
[INFO] [stderr]    Compiling phf v0.12.1
[INFO] [stderr]    Compiling debug_unsafe v0.1.3
[INFO] [stderr]    Compiling atoi_simd v0.16.1
[INFO] [stderr]    Compiling boxcar v0.2.14
[INFO] [stderr]    Compiling strength_reduce v0.2.4
[INFO] [stderr]    Compiling polars-core v0.51.0
[INFO] [stderr]    Compiling polars-error v0.51.0
[INFO] [stderr]    Compiling xxhash-rust v0.8.15
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling psm v0.1.27
[INFO] [stderr]    Compiling stacker v0.1.22
[INFO] [stderr]    Compiling regex-automata v0.4.13
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling bytemuck_derive v1.10.2
[INFO] [stderr]    Compiling strum_macros v0.27.2
[INFO] [stderr]    Compiling thiserror-impl v2.0.17
[INFO] [stderr]    Compiling skiplist v0.6.0
[INFO] [stderr]    Compiling bytemuck v1.24.0
[INFO] [stderr]    Compiling regex v1.12.2
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling compact_str v0.9.0
[INFO] [stderr]    Compiling hashbrown v0.15.5
[INFO] [stderr]    Compiling polars-dtype v0.51.0
[INFO] [stderr]    Compiling polars-row v0.51.0
[INFO] [stderr]    Compiling polars-serde v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 13s
[INFO] running `Command { std: "docker" "inspect" "4f0f04a1a6a8f029b6fd8e8d1854d8c91690e6bf2d79eb88bb9e9b5079fab2cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f0f04a1a6a8f029b6fd8e8d1854d8c91690e6bf2d79eb88bb9e9b5079fab2cd", kill_on_drop: false }`
[INFO] [stdout] 4f0f04a1a6a8f029b6fd8e8d1854d8c91690e6bf2d79eb88bb9e9b5079fab2cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 86329f7c15160edcd3abf39e41c677bd8d3e4a9a705f02b1dbc5ef7f39e03c94
[INFO] running `Command { std: "docker" "start" "-a" "86329f7c15160edcd3abf39e41c677bd8d3e4a9a705f02b1dbc5ef7f39e03c94", kill_on_drop: false }`
[INFO] [stderr]    Compiling polars-serde v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.31s
[INFO] running `Command { std: "docker" "inspect" "86329f7c15160edcd3abf39e41c677bd8d3e4a9a705f02b1dbc5ef7f39e03c94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86329f7c15160edcd3abf39e41c677bd8d3e4a9a705f02b1dbc5ef7f39e03c94", kill_on_drop: false }`
[INFO] [stdout] 86329f7c15160edcd3abf39e41c677bd8d3e4a9a705f02b1dbc5ef7f39e03c94
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4c5ee7643c95ef5fe1d5b59baec5f03ae45b2250bd0cb1a282cb0e92a6999c32
[INFO] running `Command { std: "docker" "start" "-a" "4c5ee7643c95ef5fe1d5b59baec5f03ae45b2250bd0cb1a282cb0e92a6999c32", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/polars_serde-1d0c88fcd22975b5)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test de::data_frame::tests::test_columns ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests polars_serde
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 2) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 2) stdout ----
[INFO] [stdout] error[E0599]: no function or associated item named `rows` found for struct `BorrowedDataFrameDeserializer<'de>` in the current scope
[INFO] [stdout]   --> src/lib.rs:38:71
[INFO] [stdout]    |
[INFO] [stdout] 39 | let rows = Vec::<Row<'_>>::deserialize(BorrowedDataFrameDeserializer::rows(&df))?;
[INFO] [stdout]    |                                                                       ^^^^ function or associated item not found in `BorrowedDataFrameDeserializer<'_>`
[INFO] [stdout]    |
[INFO] [stdout] note: if you're trying to build a new `BorrowedDataFrameDeserializer<'_>`, consider using `BorrowedDataFrameDeserializer::<'de>::columns` which returns `BorrowedDataFrameDeserializer<'_>`
[INFO] [stdout]   --> /opt/rustwide/workdir/src/de/data_frame.rs:68:5
[INFO] [stdout]    |
[INFO] [stdout] 68 |     pub fn columns(value: &'de DataFrame) -> Self {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 2)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.22s
[INFO] [stdout] 
[INFO] [stdout] all doctests ran in 0.44s; merged doctests compilation took 0.22s
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "4c5ee7643c95ef5fe1d5b59baec5f03ae45b2250bd0cb1a282cb0e92a6999c32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c5ee7643c95ef5fe1d5b59baec5f03ae45b2250bd0cb1a282cb0e92a6999c32", kill_on_drop: false }`
[INFO] [stdout] 4c5ee7643c95ef5fe1d5b59baec5f03ae45b2250bd0cb1a282cb0e92a6999c32