[INFO] cloning repository https://github.com/benhirsch24/iouring_bench
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/benhirsch24/iouring_bench" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenhirsch24%2Fiouring_bench", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenhirsch24%2Fiouring_bench'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] aabceee7c1b44d3d19e5b2cfe2a39a97eade8e13
[INFO] testing benhirsch24/iouring_bench against master#cced03bfd61a304243a34504618ecec86c17063f for pr-154065-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenhirsch24%2Fiouring_bench" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/benhirsch24/iouring_bench
[INFO] finished tweaking git repo https://github.com/benhirsch24/iouring_bench
[INFO] tweaked toml for git repo https://github.com/benhirsch24/iouring_bench written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/benhirsch24/iouring_bench on toolchain cced03bfd61a304243a34504618ecec86c17063f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cced03bfd61a304243a34504618ecec86c17063f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/benhirsch24/iouring_bench 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" "+cced03bfd61a304243a34504618ecec86c17063f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bitflags v2.9.4
[INFO] [stderr]   Downloaded rustc-demangle v0.1.26
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.104
[INFO] [stderr]   Downloaded enclose v1.2.1
[INFO] [stderr]   Downloaded clap-duration v0.1.11
[INFO] [stderr]   Downloaded os_socketaddr v0.2.5
[INFO] [stderr]   Downloaded owned-alloc v0.2.0
[INFO] [stderr]   Downloaded concurrent-queue v1.2.4
[INFO] [stderr]   Downloaded cache-padded v1.3.0
[INFO] [stderr]   Downloaded rlimit v0.6.2
[INFO] [stderr]   Downloaded buddy-alloc v0.4.2
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.104
[INFO] [stderr]   Downloaded sketches-ddsketch v0.1.3
[INFO] [stderr]   Downloaded lazy-regex v2.5.0
[INFO] [stderr]   Downloaded net2 v0.2.39
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.104
[INFO] [stderr]   Downloaded lazy-regex-proc_macros v2.4.1
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.104
[INFO] [stderr]   Downloaded duration-human v0.1.10
[INFO] [stderr]   Downloaded bitmaps v3.2.1
[INFO] [stderr]   Downloaded serde v1.0.225
[INFO] [stderr]   Downloaded find-msvc-tools v0.1.2
[INFO] [stderr]   Downloaded histogram v0.11.3
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.104
[INFO] [stderr]   Downloaded js-sys v0.3.81
[INFO] [stderr]   Downloaded lockfree v0.5.1
[INFO] [stderr]   Downloaded serde_core v1.0.225
[INFO] [stderr]   Downloaded io-uring v0.7.10
[INFO] [stderr]   Downloaded intrusive-collections v0.9.7
[INFO] [stderr]   Downloaded serde_derive v1.0.225
[INFO] [stderr]   Downloaded jiff-static v0.2.15
[INFO] [stderr]   Downloaded cc v1.2.39
[INFO] [stderr]   Downloaded regex v1.11.2
[INFO] [stderr]   Downloaded portable-atomic v1.11.1
[INFO] [stderr]   Downloaded glommio v0.9.0
[INFO] [stderr]   Downloaded regex-automata v0.4.10
[INFO] [stderr]   Downloaded jiff v0.2.15
[INFO] [stderr]   Downloaded libc v0.2.175
[INFO] [stderr]   Downloaded tokio v1.47.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+cced03bfd61a304243a34504618ecec86c17063f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 01395c89fa57e41195e39ecb482cc9c28e1571055d1d0f13b4d89c2bac511c43
[INFO] running `Command { std: "docker" "start" "-a" "01395c89fa57e41195e39ecb482cc9c28e1571055d1d0f13b4d89c2bac511c43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "01395c89fa57e41195e39ecb482cc9c28e1571055d1d0f13b4d89c2bac511c43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01395c89fa57e41195e39ecb482cc9c28e1571055d1d0f13b4d89c2bac511c43", kill_on_drop: false }`
[INFO] [stdout] 01395c89fa57e41195e39ecb482cc9c28e1571055d1d0f13b4d89c2bac511c43
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+cced03bfd61a304243a34504618ecec86c17063f" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 84fc2a945a2f51d44b2796dc7d77001da0512cbc88723f55a957db162e8ee112
[INFO] running `Command { std: "docker" "start" "-a" "84fc2a945a2f51d44b2796dc7d77001da0512cbc88723f55a957db162e8ee112", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.19
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]    Compiling memchr v2.7.5
[INFO] [stderr]    Compiling autocfg v1.5.0
[INFO] [stderr]    Compiling regex-syntax v0.8.6
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling pin-project-lite v0.2.16
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling anstyle v1.0.11
[INFO] [stderr]    Compiling futures-io v0.3.31
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]    Compiling zerocopy v0.8.27
[INFO] [stderr]    Compiling clap_lex v0.7.5
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling anstream v0.6.20
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]    Compiling object v0.37.3
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling find-msvc-tools v0.1.2
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling ahash v0.7.8
[INFO] [stderr]    Compiling clap_builder v4.5.48
[INFO] [stderr]    Compiling typenum v1.18.0
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling lock_api v0.4.13
[INFO] [stderr]    Compiling memoffset v0.9.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling cc v1.2.39
[INFO] [stderr]    Compiling log v0.4.28
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling bitflags v2.9.4
[INFO] [stderr]    Compiling adler2 v2.0.1
[INFO] [stderr]    Compiling slab v0.4.11
[INFO] [stderr]    Compiling gimli v0.32.3
[INFO] [stderr]    Compiling parking v2.2.1
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling crossbeam-deque v0.8.6
[INFO] [stderr]    Compiling miniz_oxide v0.8.9
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling signal-hook-registry v1.4.6
[INFO] [stderr]    Compiling rand_core v0.9.3
[INFO] [stderr]    Compiling nanorand v0.7.0
[INFO] [stderr]    Compiling crossbeam-queue v0.3.12
[INFO] [stderr]    Compiling crossbeam-channel v0.5.15
[INFO] [stderr]    Compiling tracing-core v0.1.34
[INFO] [stderr]    Compiling fastrand v1.9.0
[INFO] [stderr]    Compiling thiserror v2.0.17
[INFO] [stderr]    Compiling waker-fn v1.2.0
[INFO] [stderr]    Compiling io-uring v0.7.10
[INFO] [stderr]    Compiling rustc-demangle v0.1.26
[INFO] [stderr]    Compiling cache-padded v1.3.0
[INFO] [stderr]    Compiling owned-alloc v0.2.0
[INFO] [stderr]    Compiling lockfree v0.5.1
[INFO] [stderr]    Compiling concurrent-queue v1.2.4
[INFO] [stderr]    Compiling crossbeam v0.8.4
[INFO] [stderr]    Compiling futures-lite v1.13.0
[INFO] [stderr]    Compiling signal-hook v0.3.18
[INFO] [stderr]    Compiling parking_lot v0.12.4
[INFO] [stderr]    Compiling glommio v0.9.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling rlimit v0.6.2
[INFO] [stderr]    Compiling nix v0.27.1
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stderr]    Compiling socket2 v0.6.1
[INFO] [stderr]    Compiling addr2line v0.25.1
[INFO] [stderr]    Compiling regex-automata v0.4.10
[INFO] [stderr]    Compiling mio v1.0.4
[INFO] [stderr]    Compiling socket2 v0.4.10
[INFO] [stderr]    Compiling intrusive-collections v0.9.7
[INFO] [stderr]    Compiling sketches-ddsketch v0.1.3
[INFO] [stderr]    Compiling enclose v1.2.1
[INFO] [stderr]    Compiling jiff v0.2.15
[INFO] [stderr]    Compiling scoped-tls v1.0.1
[INFO] [stderr]    Compiling buddy-alloc v0.4.2
[INFO] [stderr]    Compiling bitmaps v3.2.1
[INFO] [stderr]    Compiling bytes v1.10.1
[INFO] [stderr]    Compiling fastrand v2.3.0
[INFO] [stderr]    Compiling net2 v0.2.39
[INFO] [stderr]    Compiling rand v0.9.2
[INFO] [stderr]    Compiling futures-lite v2.6.1
[INFO] [stderr]    Compiling os_socketaddr v0.2.5
[INFO] [stderr] error: could not compile `syn` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/cced03bfd61a304243a34504618ecec86c17063f/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-2.0.106/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="extra-traits"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="visit-mut"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("clone-impls", "default", "derive", "extra-traits", "fold", "full", "parsing", "printing", "proc-macro", "test", "visit", "visit-mut"))' -C metadata=f6a5df61641297e7 -C extra-filename=-6ffc913130ad4442 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-9755f7a3e0b8438c.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-c66ad1f2ac223737.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-6ac3b87590d2322c.rmeta --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "84fc2a945a2f51d44b2796dc7d77001da0512cbc88723f55a957db162e8ee112", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84fc2a945a2f51d44b2796dc7d77001da0512cbc88723f55a957db162e8ee112", kill_on_drop: false }`
[INFO] [stdout] 84fc2a945a2f51d44b2796dc7d77001da0512cbc88723f55a957db162e8ee112