[INFO] fetching crate memberlist 0.8.2...
[INFO] testing memberlist-0.8.2 against beta-2026-04-21 for beta-1.96-1
[INFO] extracting crate memberlist 0.8.2 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate memberlist 0.8.2
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate memberlist 0.8.2
[INFO] tweaked toml for crates.io crate memberlist 0.8.2 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate memberlist 0.8.2 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 memberlist 0.8.2 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-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0f74160df592d6c8cee5aa934acccf6cca740beeb8c969cce2175be209427e55
[INFO] running `Command { std: "docker" "start" "-a" "0f74160df592d6c8cee5aa934acccf6cca740beeb8c969cce2175be209427e55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0f74160df592d6c8cee5aa934acccf6cca740beeb8c969cce2175be209427e55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f74160df592d6c8cee5aa934acccf6cca740beeb8c969cce2175be209427e55", kill_on_drop: false }`
[INFO] [stdout] 0f74160df592d6c8cee5aa934acccf6cca740beeb8c969cce2175be209427e55
[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=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] 30ae3375295988088248d2700e0688dc7c22f35c3155fba3c5362b4e89f3f6cb
[INFO] running `Command { std: "docker" "start" "-a" "30ae3375295988088248d2700e0688dc7c22f35c3155fba3c5362b4e89f3f6cb", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.185
[INFO] [stderr]    Compiling typenum v1.19.0
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling futures-core v0.3.32
[INFO] [stderr]    Compiling futures-sink v0.3.32
[INFO] [stderr]    Compiling futures-io v0.3.32
[INFO] [stderr]    Compiling litemap v0.8.2
[INFO] [stderr]    Compiling writeable v0.6.3
[INFO] [stderr]    Compiling futures-task v0.3.32
[INFO] [stderr]    Compiling critical-section v1.2.0
[INFO] [stderr]    Compiling zerovec-derive v0.11.3
[INFO] [stderr]    Compiling thiserror-impl v2.0.18
[INFO] [stderr]    Compiling futures-macro v0.3.32
[INFO] [stderr]    Compiling zerofrom-derive v0.1.7
[INFO] [stderr]    Compiling yoke-derive v0.8.2
[INFO] [stderr]    Compiling tokio-macros v2.7.0
[INFO] [stderr]    Compiling futures-channel v0.3.32
[INFO] [stderr]    Compiling once_cell v1.21.4
[INFO] [stderr]    Compiling tracing-attributes v0.1.31
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling rustix v1.1.4
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling ipnet v2.12.0
[INFO] [stderr]    Compiling linux-raw-sys v0.12.1
[INFO] [stderr]    Compiling tracing-core v0.1.36
[INFO] [stderr]    Compiling lock_api v0.4.14
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling pin-project-internal v1.1.11
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling enum-as-inner v0.6.1
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling hybrid-array v0.4.10
[INFO] [stderr]    Compiling quinn-udp v0.5.14
[INFO] [stderr]    Compiling atomic-time v0.1.5
[INFO] [stderr]    Compiling tracing v0.1.44
[INFO] [stderr]    Compiling data-encoding v2.10.0
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling zerofrom v0.1.7
[INFO] [stderr]    Compiling futures-util v0.3.32
[INFO] [stderr]    Compiling getrandom v0.2.17
[INFO] [stderr]    Compiling socket2 v0.6.3
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]    Compiling mio v1.2.0
[INFO] [stderr]    Compiling getrandom v0.4.2
[INFO] [stderr]    Compiling yoke v0.8.2
[INFO] [stderr]    Compiling thiserror v2.0.18
[INFO] [stderr]    Compiling rand_core v0.9.5
[INFO] [stderr]    Compiling block-padding v0.3.3
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling zerovec v0.11.6
[INFO] [stderr]    Compiling zerotrie v0.2.4
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling uuid v1.23.0
[INFO] [stderr]    Compiling unicode-segmentation v1.13.2
[INFO] [stderr]    Compiling inout v0.1.4
[INFO] [stderr]    Compiling crypto-common v0.1.7
[INFO] [stderr]    Compiling tokio v1.51.1
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling cipher v0.4.4
[INFO] [stderr]    Compiling quinn v0.11.9
[INFO] [stderr]    Compiling smol_str v0.3.6
[INFO] [stderr]    Compiling seq-macro v0.3.6
[INFO] [stderr]    Compiling resolv-conf v0.7.6
[INFO] [stderr]    Compiling convert_case v0.10.0
[INFO] [stderr]    Compiling rustc-hash v2.1.2
[INFO] [stderr]    Compiling pin-project v1.1.11
[INFO] [stderr]    Compiling prettyplease v0.1.25
[INFO] [stderr]    Compiling rand v0.9.3
[INFO] [stderr]    Compiling moka v0.12.15
[INFO] [stderr]    Compiling tinystr v0.8.3
[INFO] [stderr]    Compiling potential_utf v0.1.5
[INFO] [stderr]    Compiling derive_more-impl v2.1.1
[INFO] [stderr]    Compiling universal-hash v0.5.1
[INFO] [stderr]    Compiling icu_collections v2.1.1
[INFO] [stderr]    Compiling icu_locale_core v2.1.1
[INFO] [stderr]    Compiling block-padding v0.4.2
[INFO] [stderr]    Compiling polyval v0.6.2
[INFO] [stderr]    Compiling inout v0.2.2
[INFO] [stderr]    Compiling event-listener v5.4.1
[INFO] [stderr]    Compiling cheap-clone v0.3.0
[INFO] [stderr]    Compiling crypto-common v0.2.1
[INFO] [stderr]    Compiling crossbeam-deque v0.8.6
[INFO] [stderr]    Compiling simdutf8 v0.1.5
[INFO] [stderr]    Compiling snap v1.1.1
[INFO] [stderr]    Compiling event-listener-strategy v0.5.4
[INFO] [stderr]    Compiling ghash v0.5.1
[INFO] [stderr]    Compiling rayon-core v1.13.0
[INFO] [stderr]    Compiling cipher v0.5.1
[INFO] [stderr]    Compiling ctr v0.9.2
[INFO] [stderr]    Compiling aes v0.8.4
[INFO] [stderr]    Compiling quinn-proto v0.11.14
[INFO] [stderr]    Compiling aead v0.5.2
[INFO] [stderr]    Compiling crossbeam-skiplist v0.1.3
[INFO] [stderr]    Compiling derive_utils v0.15.1
[INFO] [stderr]    Compiling memberlist-proto v0.3.2
[INFO] [stderr]    Compiling icu_provider v2.1.1
[INFO] [stderr]    Compiling darling_core v0.14.4
[INFO] [stderr]    Compiling hardware-address v0.2.0
[INFO] [stderr]    Compiling icu_normalizer v2.1.1
[INFO] [stderr]    Compiling icu_properties v2.1.2
[INFO] [stderr]    Compiling auto_enums v0.8.8
[INFO] [stderr]    Compiling aes-gcm v0.10.3
[INFO] [stderr]    Compiling rayon v1.11.0
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling cbc v0.2.0
[INFO] [stderr]    Compiling generic-array v1.3.5
[INFO] [stderr]    Compiling rand v0.10.1
[INFO] [stderr]    Compiling varing v0.13.0
[INFO] [stderr]    Compiling smallvec-wrapper v0.4.1
[INFO] [stderr]    Compiling among v0.1.8
[INFO] [stderr]    Compiling memberlist-core v0.8.2
[INFO] [stderr]    Compiling triomphe v0.1.15
[INFO] [stderr]    Compiling humantime-serde v1.1.1
[INFO] [stderr]    Compiling idna_adapter v1.2.1
[INFO] [stderr]    Compiling futures-executor v0.3.32
[INFO] [stderr]    Compiling peekable v0.4.1
[INFO] [stderr]    Compiling idna v1.1.0
[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/beta-2026-04-21-x86_64-unknown-linux-gnu/bin/rustc --crate-name syn --edition=2018 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-1.0.109/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="quote"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("clone-impls", "default", "derive", "extra-traits", "fold", "full", "parsing", "printing", "proc-macro", "quote", "test", "visit", "visit-mut"))' -C metadata=c8f758427297161c -C extra-filename=-0c8f3d8f44a3c070 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-0fa97b1aa44f5fda.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-544fd508281ca8af.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-423507c85e36a25a.rmeta --cap-lints allow --cap-lints=warn --cfg syn_disable_nightly_tests` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "30ae3375295988088248d2700e0688dc7c22f35c3155fba3c5362b4e89f3f6cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30ae3375295988088248d2700e0688dc7c22f35c3155fba3c5362b4e89f3f6cb", kill_on_drop: false }`
[INFO] [stdout] 30ae3375295988088248d2700e0688dc7c22f35c3155fba3c5362b4e89f3f6cb