[INFO] fetching crate dataset-writer 1.2.0... [INFO] testing dataset-writer-1.2.0 against beta-2025-09-21 for beta-1.91-3 [INFO] extracting crate dataset-writer 1.2.0 into /workspace/builds/worker-3-tc2/source [INFO] started tweaking crates.io crate dataset-writer 1.2.0 [INFO] finished tweaking crates.io crate dataset-writer 1.2.0 [INFO] tweaked toml for crates.io crate dataset-writer 1.2.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate dataset-writer 1.2.0 on toolchain beta-2025-09-21 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate dataset-writer 1.2.0 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-2025-09-21" "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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] e315bf541be14db2f59a2204f35400959e96a0064af1f2e21147d357b3d3fe07 [INFO] running `Command { std: "docker" "start" "-a" "e315bf541be14db2f59a2204f35400959e96a0064af1f2e21147d357b3d3fe07", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "e315bf541be14db2f59a2204f35400959e96a0064af1f2e21147d357b3d3fe07", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e315bf541be14db2f59a2204f35400959e96a0064af1f2e21147d357b3d3fe07", kill_on_drop: false }` [INFO] [stdout] e315bf541be14db2f59a2204f35400959e96a0064af1f2e21147d357b3d3fe07 [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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] a9953695dd6828d83d78695c2052c36a5f5135ed96aab9850b6e88165ba60daf [INFO] running `Command { std: "docker" "start" "-a" "a9953695dd6828d83d78695c2052c36a5f5135ed96aab9850b6e88165ba60daf", kill_on_drop: false }` [INFO] [stderr] Compiling libm v0.2.15 [INFO] [stderr] Compiling autocfg v1.5.0 [INFO] [stderr] Compiling libc v0.2.174 [INFO] [stderr] Compiling proc-macro2 v1.0.95 [INFO] [stderr] Compiling cfg-if v1.0.1 [INFO] [stderr] Compiling serde v1.0.219 [INFO] [stderr] Compiling zerocopy v0.8.26 [INFO] [stderr] Compiling iana-time-zone v0.1.63 [INFO] [stderr] Compiling once_cell v1.21.3 [INFO] [stderr] Compiling hashbrown v0.15.4 [INFO] [stderr] Compiling static_assertions v1.1.0 [INFO] [stderr] Compiling memchr v2.7.5 [INFO] [stderr] Compiling ahash v0.8.12 [INFO] [stderr] Compiling crossbeam-utils v0.8.21 [INFO] [stderr] Compiling regex-syntax v0.8.5 [INFO] [stderr] Compiling zstd-safe v6.0.6 [INFO] [stderr] Compiling lexical-util v1.0.6 [INFO] [stderr] Compiling rayon-core v1.12.1 [INFO] [stderr] Compiling anyhow v1.0.98 [INFO] [stderr] Compiling either v1.15.0 [INFO] [stderr] Compiling thread_local v1.1.9 [INFO] [stderr] Compiling num-traits v0.2.19 [INFO] [stderr] Compiling quote v1.0.40 [INFO] [stderr] Compiling syn v2.0.104 [INFO] [stderr] Compiling aho-corasick v1.1.3 [INFO] [stderr] Compiling csv-core v0.1.12 [INFO] [stderr] Compiling lexical-parse-integer v1.0.5 [INFO] [stderr] Compiling lexical-write-integer v1.0.5 [INFO] [stderr] Compiling lexical-parse-float v1.0.5 [INFO] [stderr] Compiling crossbeam-epoch v0.9.18 [INFO] [stderr] Compiling lexical-write-float v1.0.5 [INFO] [stderr] Compiling crossbeam-deque v0.8.6 [INFO] [stderr] Compiling getrandom v0.3.3 [INFO] [stderr] Compiling jobserver v0.1.33 [INFO] [stderr] Compiling lexical-core v1.0.5 [INFO] [stderr] Compiling num-integer v0.1.46 [INFO] [stderr] Compiling num-complex v0.4.6 [INFO] [stderr] Compiling half v2.6.0 [INFO] [stderr] Compiling chrono v0.4.41 [INFO] [stderr] Compiling atoi v2.0.0 [INFO] [stderr] Compiling cc v1.2.27 [INFO] [stderr] Compiling num-bigint v0.4.6 [INFO] [stderr] Compiling num-iter v0.1.45 [INFO] [stderr] Compiling rayon v1.10.0 [INFO] [stderr] Compiling zstd-sys v2.0.15+zstd.1.5.7 [INFO] [stderr] Compiling regex-automata v0.4.9 [INFO] [stderr] Compiling serde_derive v1.0.219 [INFO] [stderr] Compiling num-rational v0.4.2 [INFO] [stderr] Compiling num v0.4.3 [INFO] [stderr] Compiling arrow-buffer v55.2.0 [INFO] [stderr] Compiling regex v1.11.1 [INFO] [stderr] Compiling zstd v0.12.4 [INFO] [stderr] Compiling arrow-schema v55.2.0 [INFO] [stderr] Compiling csv v1.3.1 [INFO] [stderr] Compiling arrow-data v55.2.0 [INFO] [stderr] Compiling arrow-array v55.2.0 [INFO] [stderr] Compiling arrow-select v55.2.0 [INFO] [stderr] Compiling arrow-row v55.2.0 [INFO] [stderr] Compiling arrow-arith v55.2.0 [INFO] [stderr] Compiling arrow-cast v55.2.0 [INFO] [stderr] Compiling arrow-ord v55.2.0 [INFO] [stderr] Compiling arrow-string v55.2.0 [INFO] [stderr] Compiling arrow-csv v55.2.0 [INFO] [stderr] Compiling arrow v55.2.0 [INFO] [stderr] Compiling dataset-writer v1.2.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:112:30 [INFO] [stdout] | [INFO] [stdout] 112 | pub fn get_thread_writer(&self) -> Result> { [INFO] [stdout] | ^^^^^ ^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 112 | pub fn get_thread_writer(&self) -> Result> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 42.76s [INFO] running `Command { std: "docker" "inspect" "a9953695dd6828d83d78695c2052c36a5f5135ed96aab9850b6e88165ba60daf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a9953695dd6828d83d78695c2052c36a5f5135ed96aab9850b6e88165ba60daf", kill_on_drop: false }` [INFO] [stdout] a9953695dd6828d83d78695c2052c36a5f5135ed96aab9850b6e88165ba60daf [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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ecd4bd0c1f736cc76eec755da83acc1d50b91833114a91d0b632df5a58befb7a [INFO] running `Command { std: "docker" "start" "-a" "ecd4bd0c1f736cc76eec755da83acc1d50b91833114a91d0b632df5a58befb7a", kill_on_drop: false }` [INFO] [stderr] Compiling rustix v1.0.7 [INFO] [stderr] Compiling ahash v0.8.12 [INFO] [stderr] Compiling bitflags v2.9.1 [INFO] [stderr] Compiling arrow-array v55.2.0 [INFO] [stderr] Compiling tempfile v3.20.0 [INFO] [stderr] Compiling arrow-select v55.2.0 [INFO] [stderr] Compiling arrow-arith v55.2.0 [INFO] [stderr] Compiling arrow-row v55.2.0 [INFO] [stderr] Compiling arrow-cast v55.2.0 [INFO] [stderr] Compiling arrow-ord v55.2.0 [INFO] [stderr] Compiling arrow-string v55.2.0 [INFO] [stderr] Compiling arrow-csv v55.2.0 [INFO] [stderr] Compiling arrow v55.2.0 [INFO] [stderr] Compiling dataset-writer v1.2.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:112:30 [INFO] [stdout] | [INFO] [stdout] 112 | pub fn get_thread_writer(&self) -> Result> { [INFO] [stdout] | ^^^^^ ^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 112 | pub fn get_thread_writer(&self) -> Result> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:112:30 [INFO] [stdout] | [INFO] [stdout] 112 | pub fn get_thread_writer(&self) -> Result> { [INFO] [stdout] | ^^^^^ ^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 112 | pub fn get_thread_writer(&self) -> Result> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 25.32s [INFO] running `Command { std: "docker" "inspect" "ecd4bd0c1f736cc76eec755da83acc1d50b91833114a91d0b632df5a58befb7a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ecd4bd0c1f736cc76eec755da83acc1d50b91833114a91d0b632df5a58befb7a", kill_on_drop: false }` [INFO] [stdout] ecd4bd0c1f736cc76eec755da83acc1d50b91833114a91d0b632df5a58befb7a [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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] d5ff490fa5d45d07c0353d9998077729ee3af4ed4b731b8368b515087de228cb [INFO] running `Command { std: "docker" "start" "-a" "d5ff490fa5d45d07c0353d9998077729ee3af4ed4b731b8368b515087de228cb", kill_on_drop: false }` [INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stderr] --> src/lib.rs:112:30 [INFO] [stderr] | [INFO] [stderr] 112 | pub fn get_thread_writer(&self) -> Result> { [INFO] [stderr] | ^^^^^ ^^^^^^^^^ the same lifetime is hidden here [INFO] [stderr] | | [INFO] [stderr] | the lifetime is elided here [INFO] [stderr] | [INFO] [stderr] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stderr] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stderr] help: use `'_` for type paths [INFO] [stderr] | [INFO] [stderr] 112 | pub fn get_thread_writer(&self) -> Result> { [INFO] [stderr] | +++ [INFO] [stderr] [INFO] [stderr] warning: `dataset-writer` (lib) generated 1 warning (run `cargo fix --lib -p dataset-writer` to apply 1 suggestion) [INFO] [stderr] warning: `dataset-writer` (lib test) generated 1 warning (1 duplicate) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.16s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/dataset_writer-d4a28cafdb6c9dc8) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Doc-tests dataset_writer [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "d5ff490fa5d45d07c0353d9998077729ee3af4ed4b731b8368b515087de228cb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d5ff490fa5d45d07c0353d9998077729ee3af4ed4b731b8368b515087de228cb", kill_on_drop: false }` [INFO] [stdout] d5ff490fa5d45d07c0353d9998077729ee3af4ed4b731b8368b515087de228cb