[INFO] fetching crate io-engine 0.4.1...
[INFO] testing io-engine-0.4.1 against try#db823df02fd0c2cf67b43025ac3fef3f2d743245 for pr-150681
[INFO] extracting crate io-engine 0.4.1 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate io-engine 0.4.1
[INFO] finished tweaking crates.io crate io-engine 0.4.1
[INFO] tweaked toml for crates.io crate io-engine 0.4.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate io-engine 0.4.1 on toolchain db823df02fd0c2cf67b43025ac3fef3f2d743245
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate io-engine 0.4.1 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" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 91724f15edba89aec9f3b8e0271332e159389b58631397f3936bf814441e964f
[INFO] running `Command { std: "docker" "start" "-a" "91724f15edba89aec9f3b8e0271332e159389b58631397f3936bf814441e964f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "91724f15edba89aec9f3b8e0271332e159389b58631397f3936bf814441e964f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91724f15edba89aec9f3b8e0271332e159389b58631397f3936bf814441e964f", kill_on_drop: false }`
[INFO] [stdout] 91724f15edba89aec9f3b8e0271332e159389b58631397f3936bf814441e964f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ee196ff08f7c6127510bb8a38610b6f4a4ce1e938c492bfa5f0011df53cf7b67
[INFO] running `Command { std: "docker" "start" "-a" "ee196ff08f7c6127510bb8a38610b6f4a4ce1e938c492bfa5f0011df53cf7b67", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]    Compiling glob v0.3.2
[INFO] [stderr]    Compiling zerocopy v0.8.26
[INFO] [stderr]    Compiling prettyplease v0.2.34
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling libloading v0.8.8
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling bindgen v0.72.0
[INFO] [stderr]    Compiling bitflags v2.9.1
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling syn v2.0.103
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]    Compiling itertools v0.13.0
[INFO] [stderr]    Compiling lock_api v0.4.13
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling rustc-hash v2.1.1
[INFO] [stderr]    Compiling log v0.4.27
[INFO] [stderr]    Compiling object v0.36.7
[INFO] [stderr]    Compiling parking_lot_core v0.6.3
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling value-bag v1.11.1
[INFO] [stderr]    Compiling signal-hook v0.3.18
[INFO] [stderr]    Compiling gimli v0.31.1
[INFO] [stderr]    Compiling clang-sys v1.8.1
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling cfg_aliases v0.2.1
[INFO] [stderr]    Compiling nix v0.30.1
[INFO] [stderr]    Compiling smallvec v0.6.14
[INFO] [stderr]    Compiling lz4-sys v1.11.1+lz4-1.10.0
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.25
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling iana-time-zone v0.1.63
[INFO] [stderr]    Compiling crossbeam-deque v0.8.6
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling chrono v0.4.41
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_core v0.9.3
[INFO] [stderr]    Compiling signal-hook-registry v1.4.5
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling captains-log-helper v0.1.0
[INFO] [stderr]    Compiling parking_lot v0.12.4
[INFO] [stderr]    Compiling lock_api v0.3.4
[INFO] [stderr]    Compiling crossbeam-queue v0.3.12
[INFO] [stderr]    Compiling crossbeam-channel v0.5.15
[INFO] [stderr]    Compiling arc-swap v1.7.1
[INFO] [stderr]    Compiling exitcode v1.1.2
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling cexpr v0.6.0
[INFO] [stderr]    Compiling crossbeam v0.8.4
[INFO] [stderr]    Compiling regex v1.11.1
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stderr]    Compiling rand v0.9.1
[INFO] [stderr]    Compiling addr2line v0.24.2
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling backtrace v0.3.75
[INFO] [stderr]    Compiling fail v0.5.1
[INFO] [stderr]    Compiling enum_dispatch v0.3.13
[INFO] [stderr]    Compiling captains-log v0.3.2
[INFO] [stderr]    Compiling io-engine-aio-bindings v0.1.4
[INFO] [stderr]    Compiling io-engine v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 43.77s
[INFO] running `Command { std: "docker" "inspect" "ee196ff08f7c6127510bb8a38610b6f4a4ce1e938c492bfa5f0011df53cf7b67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee196ff08f7c6127510bb8a38610b6f4a4ce1e938c492bfa5f0011df53cf7b67", kill_on_drop: false }`
[INFO] [stdout] ee196ff08f7c6127510bb8a38610b6f4a4ce1e938c492bfa5f0011df53cf7b67
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0fc9cdb78c39a2db18b2f29acb0d9667b8fca20adda0fb7183638815f98e3453
[INFO] running `Command { std: "docker" "start" "-a" "0fc9cdb78c39a2db18b2f29acb0d9667b8fca20adda0fb7183638815f98e3453", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling atomic-waitgroup v0.1.3
[INFO] [stderr]    Compiling md5 v0.7.0
[INFO] [stderr]    Compiling tokio v1.45.1
[INFO] [stderr]    Compiling io-engine v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 5.72s
[INFO] running `Command { std: "docker" "inspect" "0fc9cdb78c39a2db18b2f29acb0d9667b8fca20adda0fb7183638815f98e3453", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fc9cdb78c39a2db18b2f29acb0d9667b8fca20adda0fb7183638815f98e3453", kill_on_drop: false }`
[INFO] [stdout] 0fc9cdb78c39a2db18b2f29acb0d9667b8fca20adda0fb7183638815f98e3453
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] effc375699c0b964eae5017f969b25d164f16373fb5467a2bcab35f463000f97
[INFO] running `Command { std: "docker" "start" "-a" "effc375699c0b964eae5017f969b25d164f16373fb5467a2bcab35f463000f97", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/io_engine-bd237cce0b2481af)
[INFO] [stdout] 
[INFO] [stdout] running 24 tests
[INFO] [stdout] test buffer::test::test_buf_convertion ... ok
[INFO] [stdout] test buffer::test::test_c_ref_clone_and_drop ... ok
[INFO] [stdout] test scheduler::embedded_list::tests::list_pop_back ... ok
[INFO] [stdout] test scheduler::embedded_list::tests::list_pop_front ... ok
[INFO] [stdout] test buffer::utils::tests::test_rand_buffer ... ok
[INFO] [stdout] test buffer::utils::tests::test_safe_copy ... ok
[INFO] [stdout] test scheduler::embedded_list::tests::list_iter ... ok
[INFO] [stdout] test buffer::test::test_set_len ... ok
[INFO] [stdout] test buffer::test::test_set_zero ... ok
[INFO] [stdout] test scheduler::embedded_list::tests::push_back_pop_back_one ... ok
[INFO] [stdout] test scheduler::embedded_list::tests::push_front_pop_front_one ... ok
[INFO] [stdout] test buffer::test::test_c_ref_const ... ok
[INFO] [stdout] test scheduler::embedded_list::tests::list_remove_node ... ok
[INFO] [stdout] test scheduler::embedded_list::tests::list_push_front ... ok
[INFO] [stdout] test scheduler::embedded_list::tests::push_back_pop_front_one ... ok
[INFO] [stdout] test buffer::utils::tests::test_set_zero ... ok
[INFO] [stdout] test scheduler::embedded_list::tests::list_push_back ... ok
[INFO] [stdout] test buffer::test::test_copy_and_clean ... ok
[INFO] [stdout] test test::test_task::test_ioevent ... ok
[INFO] [stdout] test scheduler::embedded_list::tests::push_front_pop_back_one ... ok
[INFO] [stderr] [2026-01-07 17:26:34.278286][DEBUG][mod.rs:36] make_temp_file test-aio-5596611672757648456.dat
[INFO] [stderr] [2026-01-07 17:26:34.278003][DEBUG][mod.rs:36] make_temp_file test-aio-7666664784756379840.dat
[INFO] [stdout] test buffer::test::test_c_ref_mutability - should panic ... ok
[INFO] [stdout] test buffer::test::test_buffer_alloc ... ok
[INFO] [stderr] [2026-01-07 17:26:36.898653][ERROR][context.rs:85] drop
[INFO] [stderr] [2026-01-07 17:26:36.899080][INFO][context.rs:265] io_submit worker exit due to closing
[INFO] [stderr] [2026-01-07 17:26:36.899464][INFO][mod.rs:21] deleted /tmp/test-aio-5596611672757648456.dat
[INFO] [stdout] test test::test_merge::test_merged_submit ... ok
[INFO] [stderr] [2026-01-07 17:26:37.249927][ERROR][context.rs:85] drop
[INFO] [stderr] [2026-01-07 17:26:37.250136][INFO][mod.rs:21] deleted /tmp/test-aio-7666664784756379840.dat
[INFO] [stdout] test test::test_context::test_read_write ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 24 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 3.09s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests io_engine
[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" "effc375699c0b964eae5017f969b25d164f16373fb5467a2bcab35f463000f97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "effc375699c0b964eae5017f969b25d164f16373fb5467a2bcab35f463000f97", kill_on_drop: false }`
[INFO] [stdout] effc375699c0b964eae5017f969b25d164f16373fb5467a2bcab35f463000f97