[INFO] fetching crate precord-core 0.7.15-20250911...
[INFO] testing precord-core-0.7.15-20250911 against 1.91.0 for beta-1.92-2
[INFO] extracting crate precord-core 0.7.15-20250911 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate precord-core 0.7.15-20250911
[INFO] finished tweaking crates.io crate precord-core 0.7.15-20250911
[INFO] tweaked toml for crates.io crate precord-core 0.7.15-20250911 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate precord-core 0.7.15-20250911 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate precord-core 0.7.15-20250911 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" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded scratch v1.0.3
[INFO] [stderr]   Downloaded windows-interface v0.52.0
[INFO] [stderr]   Downloaded four-char-code v0.0.5
[INFO] [stderr]   Downloaded windows-implement v0.52.0
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[INFO] [stderr]   Downloaded IOKit-sys v0.1.5
[INFO] [stderr]   Downloaded windows-implement v0.57.0
[INFO] [stderr]   Downloaded CoreFoundation-sys v0.1.4
[INFO] [stderr]   Downloaded thiserror-impl v2.0.9
[INFO] [stderr]   Downloaded mach v0.1.2
[INFO] [stderr]   Downloaded windows-core v0.57.0
[INFO] [stderr]   Downloaded libloading v0.8.4
[INFO] [stderr]   Downloaded cxx-build v1.0.86
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.13
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[INFO] [stderr]   Downloaded syn v2.0.91
[INFO] [stderr]   Downloaded thiserror v2.0.9
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[INFO] [stderr]   Downloaded windows v0.57.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 339db7693cb7c0b1c006ba07de015923e8e08d0fa41d8ed68f8e573dfe3b336f
[INFO] running `Command { std: "docker" "start" "-a" "339db7693cb7c0b1c006ba07de015923e8e08d0fa41d8ed68f8e573dfe3b336f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "339db7693cb7c0b1c006ba07de015923e8e08d0fa41d8ed68f8e573dfe3b336f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "339db7693cb7c0b1c006ba07de015923e8e08d0fa41d8ed68f8e573dfe3b336f", kill_on_drop: false }`
[INFO] [stdout] 339db7693cb7c0b1c006ba07de015923e8e08d0fa41d8ed68f8e573dfe3b336f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2c2dd3166c4c915ca4a164899e0dd6b35428b43ad89bc97dd6ceda9e0a8981d4
[INFO] running `Command { std: "docker" "start" "-a" "2c2dd3166c4c915ca4a164899e0dd6b35428b43ad89bc97dd6ceda9e0a8981d4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.92
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.14
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.13
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling either v1.8.0
[INFO] [stderr]    Compiling serde v1.0.204
[INFO] [stderr]    Compiling thiserror v1.0.61
[INFO] [stderr]    Compiling once_cell v1.19.0
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.91
[INFO] [stderr]    Compiling crossbeam-deque v0.8.2
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]    Compiling rayon v1.10.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.61
[INFO] [stderr]    Compiling serde_derive v1.0.204
[INFO] [stderr]    Compiling sysinfo v0.30.13
[INFO] [stderr]    Compiling precord-core v0.7.15-20250911 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `pids`
[INFO] [stdout]   --> src/system.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |         pids: T,
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_pids`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `features` is never read
[INFO] [stdout]   --> src/system.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct System {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 14 |     features: Features,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.42s
[INFO] running `Command { std: "docker" "inspect" "2c2dd3166c4c915ca4a164899e0dd6b35428b43ad89bc97dd6ceda9e0a8981d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c2dd3166c4c915ca4a164899e0dd6b35428b43ad89bc97dd6ceda9e0a8981d4", kill_on_drop: false }`
[INFO] [stdout] 2c2dd3166c4c915ca4a164899e0dd6b35428b43ad89bc97dd6ceda9e0a8981d4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "+1.91.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c71e3ed4565897d50f5b0a56ebd631e2966b2901cf1ca812bb8aa6958ed24364
[INFO] running `Command { std: "docker" "start" "-a" "c71e3ed4565897d50f5b0a56ebd631e2966b2901cf1ca812bb8aa6958ed24364", kill_on_drop: false }`
[INFO] [stderr]    Compiling precord-core v0.7.15-20250911 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `pids`
[INFO] [stdout]   --> src/system.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |         pids: T,
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_pids`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `features` is never read
[INFO] [stdout]   --> src/system.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct System {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 14 |     features: Features,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pids`
[INFO] [stdout]   --> src/system.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |         pids: T,
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_pids`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `features` is never read
[INFO] [stdout]   --> src/system.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct System {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 14 |     features: Features,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "c71e3ed4565897d50f5b0a56ebd631e2966b2901cf1ca812bb8aa6958ed24364", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c71e3ed4565897d50f5b0a56ebd631e2966b2901cf1ca812bb8aa6958ed24364", kill_on_drop: false }`
[INFO] [stdout] c71e3ed4565897d50f5b0a56ebd631e2966b2901cf1ca812bb8aa6958ed24364
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "+1.91.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3f01a1e0bae01534a4337b1f877e4094e9a9370e98daccbca9f8d7bd286c8fdb
[INFO] running `Command { std: "docker" "start" "-a" "3f01a1e0bae01534a4337b1f877e4094e9a9370e98daccbca9f8d7bd286c8fdb", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `pids`
[INFO] [stderr]   --> src/system.rs:38:9
[INFO] [stderr]    |
[INFO] [stderr] 38 |         pids: T,
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_pids`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `features` is never read
[INFO] [stderr]   --> src/system.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub struct System {
[INFO] [stderr]    |            ------ field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 14 |     features: Features,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `precord-core` (lib) generated 2 warnings
[INFO] [stderr] warning: `precord-core` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/precord_core-76ccb8d2c9234d81)
[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 precord_core
[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" "3f01a1e0bae01534a4337b1f877e4094e9a9370e98daccbca9f8d7bd286c8fdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f01a1e0bae01534a4337b1f877e4094e9a9370e98daccbca9f8d7bd286c8fdb", kill_on_drop: false }`
[INFO] [stdout] 3f01a1e0bae01534a4337b1f877e4094e9a9370e98daccbca9f8d7bd286c8fdb