[INFO] fetching crate seglog 0.2.2...
[INFO] testing seglog-0.2.2 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate seglog 0.2.2 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate seglog 0.2.2
[INFO] finished tweaking crates.io crate seglog 0.2.2
[INFO] tweaked toml for crates.io crate seglog 0.2.2 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate seglog 0.2.2 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate seglog 0.2.2 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-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 60aa7b604ad81d469d332b3b4e8544a9d56df78168a3260b6cc0890b3bbbbef5
[INFO] running `Command { std: "docker" "start" "-a" "60aa7b604ad81d469d332b3b4e8544a9d56df78168a3260b6cc0890b3bbbbef5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "60aa7b604ad81d469d332b3b4e8544a9d56df78168a3260b6cc0890b3bbbbef5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60aa7b604ad81d469d332b3b4e8544a9d56df78168a3260b6cc0890b3bbbbef5", kill_on_drop: false }`
[INFO] [stdout] 60aa7b604ad81d469d332b3b4e8544a9d56df78168a3260b6cc0890b3bbbbef5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7a77bb345a508e395479b94a847d0f3755a804d2c45b28da4ceafd98f72a1672
[INFO] running `Command { std: "docker" "start" "-a" "7a77bb345a508e395479b94a847d0f3755a804d2c45b28da4ceafd98f72a1672", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.177
[INFO] [stderr]    Compiling unicode-ident v1.0.19
[INFO] [stderr]    Compiling find-msvc-tools v0.1.4
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling zstd-safe v7.2.4
[INFO] [stderr]    Compiling thiserror v2.0.17
[INFO] [stderr]    Compiling bitflags v2.9.4
[INFO] [stderr]    Compiling nix v0.30.1
[INFO] [stderr]    Compiling tracing-core v0.1.34
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling jobserver v0.1.34
[INFO] [stderr]    Compiling cc v1.2.41
[INFO] [stderr]    Compiling zstd-sys v2.0.16+zstd.1.5.7
[INFO] [stderr]    Compiling tracing-attributes v0.1.30
[INFO] [stderr]    Compiling thiserror-impl v2.0.17
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling zstd v0.13.3
[INFO] [stderr]    Compiling seglog v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.22s
[INFO] running `Command { std: "docker" "inspect" "7a77bb345a508e395479b94a847d0f3755a804d2c45b28da4ceafd98f72a1672", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a77bb345a508e395479b94a847d0f3755a804d2c45b28da4ceafd98f72a1672", kill_on_drop: false }`
[INFO] [stdout] 7a77bb345a508e395479b94a847d0f3755a804d2c45b28da4ceafd98f72a1672
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a61881cc1f2d8e38c23e23261a3b20cf7d9093798329c5c0663688e9908a303d
[INFO] running `Command { std: "docker" "start" "-a" "a61881cc1f2d8e38c23e23261a3b20cf7d9093798329c5c0663688e9908a303d", kill_on_drop: false }`
[INFO] [stderr]    Compiling zerocopy v0.8.27
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]    Compiling bitflags v2.9.4
[INFO] [stderr]    Compiling clap_lex v0.7.6
[INFO] [stderr]    Compiling rustix v1.1.2
[INFO] [stderr]    Compiling regex-automata v0.4.13
[INFO] [stderr]    Compiling zerocopy-derive v0.8.27
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling linux-raw-sys v0.11.0
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]    Compiling clap_builder v4.5.53
[INFO] [stderr]    Compiling nix v0.30.1
[INFO] [stderr]    Compiling seglog v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling regex v1.12.2
[INFO] [stderr]    Compiling tempfile v3.23.0
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling clap v4.5.53
[INFO] [stderr]    Compiling half v2.7.1
[INFO] [stderr]    Compiling ciborium-ll v0.2.2
[INFO] [stderr]    Compiling ciborium v0.2.2
[INFO] [stderr]    Compiling criterion v0.7.0
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 17.41s
[INFO] running `Command { std: "docker" "inspect" "a61881cc1f2d8e38c23e23261a3b20cf7d9093798329c5c0663688e9908a303d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a61881cc1f2d8e38c23e23261a3b20cf7d9093798329c5c0663688e9908a303d", kill_on_drop: false }`
[INFO] [stdout] a61881cc1f2d8e38c23e23261a3b20cf7d9093798329c5c0663688e9908a303d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0b80dcfa7dedbcc10c10be19e2e53d438b0b178b950b7a800470ec7c78b5bd19
[INFO] running `Command { std: "docker" "start" "-a" "0b80dcfa7dedbcc10c10be19e2e53d438b0b178b950b7a800470ec7c78b5bd19", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.17s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/seglog-5c9b95474e1658ed)
[INFO] [stdout] 
[INFO] [stdout] running 90 tests
[INFO] [stdout] test parse::tests::test_parse_empty_record ... ok
[INFO] [stdout] test parse::tests::test_parse_invalid_crc ... ok
[INFO] [stdout] test parse::tests::test_parse_insufficient_bytes_for_data ... ok
[INFO] [stdout] test parse::tests::test_parse_insufficient_bytes_for_header ... ok
[INFO] [stdout] test parse::tests::test_parse_multiple_records ... ok
[INFO] [stdout] test parse::tests::test_parse_record_at_offset ... ok
[INFO] [stdout] test parse::tests::test_parse_truncation_marker ... ok
[INFO] [stdout] test parse::tests::test_parse_with_header ... ok
[INFO] [stdout] test tests::test_append_multiple_records_with_headers ... ok
[INFO] [stdout] test tests::test_append_with_header_h8 ... ok
[INFO] [stdout] test tests::test_append_with_header_h16 ... ok
[INFO] [stdout] test tests::test_compressed_record_has_compressed_data_field ... ok
[INFO] [stdout] test tests::test_empty_segment ... ok
[INFO] [stdout] test tests::test_compression_127_bytes ... ok
[INFO] [stdout] test tests::test_compression_large_data ... ok
[INFO] [stdout] test tests::test_enable_disable_compression ... ok
[INFO] [stdout] test tests::test_compression_exactly_128_bytes ... ok
[INFO] [stdout] test parse::tests::test_parse_simple_record ... ok
[INFO] [stdout] test tests::test_headers_compression_replace_all_together ... ok
[INFO] [stdout] test tests::test_compression_disabled_by_default ... ok
[INFO] [stdout] test tests::test_append_with_header_h32 ... ok
[INFO] [stdout] test tests::test_compression_with_headers_h8 ... ok
[INFO] [stdout] test tests::test_compression_ratio_verification ... ok
[INFO] [stdout] test tests::test_header_preserved_in_record ... ok
[INFO] [stdout] test tests::test_iter_all_records ... ok
[INFO] [stdout] test tests::test_iter_single_record ... ok
[INFO] [stdout] test tests::test_compression_large_1mb_data ... ok
[INFO] [stdout] test tests::test_compression_header_never_compressed ... ok
[INFO] [stdout] test tests::test_iter_with_start_offset ... ok
[INFO] [stdout] test tests::test_iter_empty_segment ... ok
[INFO] [stdout] test tests::test_concurrent_read_with_headers_and_compression ... ok
[INFO] [stdout] test tests::test_flushed_offset_sync ... ok
[INFO] [stdout] test tests::test_iter_from_offset ... ok
[INFO] [stdout] test tests::test_max_segment_size ... ok
[INFO] [stdout] test tests::test_iter_with_headers ... ok
[INFO] [stdout] test tests::test_reader_out_of_bounds ... ok
[INFO] [stdout] test tests::test_reader_close ... ok
[INFO] [stdout] test tests::test_large_record ... ok
[INFO] [stdout] test tests::test_concurrent_read_write ... ok
[INFO] [stdout] test tests::test_reader_open ... ok
[INFO] [stdout] test tests::test_no_compression_when_disabled ... ok
[INFO] [stdout] test tests::test_read_compressed_record_sequential ... ok
[INFO] [stdout] test tests::test_reader_read_bytes ... ok
[INFO] [stdout] test tests::test_iter_compressed_records ... ok
[INFO] [stdout] test tests::test_mixed_compressed_uncompressed ... ok
[INFO] [stdout] test tests::test_reader_crc_mismatch ... ok
[INFO] [stdout] test tests::test_open_with_corruption_after_header ... ok
[INFO] [stdout] test tests::test_random_and_sequential_read_with_headers ... ok
[INFO] [stdout] test tests::test_reader_read_record_random ... ok
[INFO] [stdout] test parse::tests::test_parse_large_record ... ok
[INFO] [stdout] test tests::test_no_compression_small_data ... ok
[INFO] [stdout] test tests::test_replace_header_h0_simple ... ok
[INFO] [stdout] test tests::test_reader_with_start_offset ... ok
[INFO] [stdout] test tests::test_reader_try_clone ... ok
[INFO] [stdout] test tests::test_reader_truncation_marker ... ok
[INFO] [stdout] test tests::test_replace_header_invalid_offset ... ok
[INFO] [stdout] test tests::test_replace_header_h8 ... ok
[INFO] [stdout] test tests::test_writer_append_single_record ... ok
[INFO] [stdout] test tests::test_reader_read_record_sequential ... ok
[INFO] [stdout] test tests::test_replaced_header_readable_random ... ok
[INFO] [stdout] test tests::test_read_compressed_record_random ... ok
[INFO] [stdout] test tests::test_replace_header_on_compressed_record ... ok
[INFO] [stdout] test tests::test_replace_header_multiple_times ... ok
[INFO] [stdout] test tests::test_replace_header_out_of_bounds ... ok
[INFO] [stdout] test tests::test_start_offset_remaining_bytes ... ok
[INFO] [stdout] test tests::test_replace_header_preserves_compression ... ok
[INFO] [stdout] test tests::test_replace_header_h16 ... ok
[INFO] [stdout] test tests::test_writer_append_multiple_records ... ok
[INFO] [stdout] test tests::test_writer_close ... ok
[INFO] [stdout] test tests::test_replace_header_survives_reopen ... ok
[INFO] [stdout] test tests::test_writer_create ... ok
[INFO] [stdout] test tests::test_replace_header_preserves_data ... ok
[INFO] [stdout] test tests::test_writer_create_with_start_offset ... ok
[INFO] [stdout] test tests::test_writer_flush_writer ... ok
[INFO] [stdout] test tests::test_writer_create_already_exists ... ok
[INFO] [stdout] test tests::test_writer_write_offset ... ok
[INFO] [stdout] test tests::test_replace_header_updates_crc ... ok
[INFO] [stdout] test tests::test_writer_open_existing ... ok
[INFO] [stdout] test tests::test_writer_open_with_corruption ... ok
[INFO] [stdout] test tests::test_replaced_header_readable_sequential ... ok
[INFO] [stdout] test tests::test_writer_open_compressed_segment ... ok
[INFO] [stdout] test tests::test_writer_segment_full ... ok
[INFO] [stdout] test tests::test_writer_remaining_bytes ... ok
[INFO] [stdout] test tests::test_writer_set_len_noop ... ok
[INFO] [stdout] test tests::test_writer_open_with_start_offset ... ok
[INFO] [stdout] test tests::test_writer_sync ... ok
[INFO] [stdout] test tests::test_writer_set_len ... ok
[INFO] [stdout] test tests::test_writer_with_header_data ... ok
[INFO] [stdout] test tests::test_writer_open_with_headers ... ok
[INFO] [stdout] test tests::test_record_boundaries ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 90 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.11s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests seglog
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test src/read.rs - read::Reader<H>::replace_header_with (line 458) - compile ... ok
[INFO] [stdout] test src/lib.rs - (line 135) ... ok
[INFO] [stdout] test src/lib.rs - (line 88) ... ok
[INFO] [stdout] test src/lib.rs - (line 113) ... ok
[INFO] [stdout] test src/write.rs - write::Writer<H>::create (line 74) ... ok
[INFO] [stdout] test src/lib.rs - (line 66) ... ok
[INFO] [stdout] test src/write.rs - write::Writer<H>::open (line 150) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stdout] all doctests ran in 0.89s; merged doctests compilation took 0.86s
[INFO] running `Command { std: "docker" "inspect" "0b80dcfa7dedbcc10c10be19e2e53d438b0b178b950b7a800470ec7c78b5bd19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b80dcfa7dedbcc10c10be19e2e53d438b0b178b950b7a800470ec7c78b5bd19", kill_on_drop: false }`
[INFO] [stdout] 0b80dcfa7dedbcc10c10be19e2e53d438b0b178b950b7a800470ec7c78b5bd19
