[INFO] fetching crate virtual-fs 0.601.0...
[INFO] testing virtual-fs-0.601.0 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate virtual-fs 0.601.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate virtual-fs 0.601.0
[INFO] finished tweaking crates.io crate virtual-fs 0.601.0
[INFO] tweaked toml for crates.io crate virtual-fs 0.601.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate virtual-fs 0.601.0 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate virtual-fs 0.601.0 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-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ddce452529a4c3605899238733acb7f2bf92662108ffb851ad86c03319219a2b
[INFO] running `Command { std: "docker" "start" "-a" "ddce452529a4c3605899238733acb7f2bf92662108ffb851ad86c03319219a2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ddce452529a4c3605899238733acb7f2bf92662108ffb851ad86c03319219a2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ddce452529a4c3605899238733acb7f2bf92662108ffb851ad86c03319219a2b", kill_on_drop: false }`
[INFO] [stdout] ddce452529a4c3605899238733acb7f2bf92662108ffb851ad86c03319219a2b
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f4612401e89e31ccce7ad01904e6a80261cae5e146f1a67509edcde34f4ae18e
[INFO] running `Command { std: "docker" "start" "-a" "f4612401e89e31ccce7ad01904e6a80261cae5e146f1a67509edcde34f4ae18e", kill_on_drop: false }`
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling regex-syntax v0.8.6
[INFO] [stderr]    Compiling simdutf8 v0.1.5
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling indexmap v2.11.4
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling ptr_meta_derive v0.3.1
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling darling_core v0.21.3
[INFO] [stderr]    Compiling percent-encoding v2.3.2
[INFO] [stderr]    Compiling bytes v1.10.1
[INFO] [stderr]    Compiling bytecheck_derive v0.8.2
[INFO] [stderr]    Compiling yoke v0.8.0
[INFO] [stderr]    Compiling nom v5.1.3
[INFO] [stderr]    Compiling serde_spanned v0.6.9
[INFO] [stderr]    Compiling toml_datetime v0.6.11
[INFO] [stderr]    Compiling form_urlencoded v1.2.2
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling zerovec v0.11.4
[INFO] [stderr]    Compiling zerotrie v0.2.2
[INFO] [stderr]    Compiling munge_macro v0.4.7
[INFO] [stderr]    Compiling bstr v1.12.0
[INFO] [stderr]    Compiling bytecheck v0.6.12
[INFO] [stderr]    Compiling target-lexicon v0.12.16
[INFO] [stderr]    Compiling schemars v0.8.22
[INFO] [stderr]    Compiling ptr_meta v0.3.1
[INFO] [stderr]    Compiling rancor v0.1.1
[INFO] [stderr]    Compiling block-buffer v0.10.4
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]    Compiling wasmparser v0.224.1
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling toml_edit v0.22.27
[INFO] [stderr]    Compiling bytecheck v0.8.2
[INFO] [stderr]    Compiling chrono v0.4.42
[INFO] [stderr]    Compiling munge v0.4.7
[INFO] [stderr]    Compiling ciborium v0.2.2
[INFO] [stderr]    Compiling rkyv_derive v0.8.12
[INFO] [stderr]    Compiling rend v0.5.3
[INFO] [stderr]    Compiling memmap2 v0.6.2
[INFO] [stderr]    Compiling sha2 v0.10.9
[INFO] [stderr]    Compiling simd-adler32 v0.3.7
[INFO] [stderr]    Compiling tinystr v0.8.1
[INFO] [stderr]    Compiling potential_utf v0.1.3
[INFO] [stderr]    Compiling any_ascii v0.1.7
[INFO] [stderr]    Compiling icu_locale_core v2.0.0
[INFO] [stderr]    Compiling icu_collections v2.0.0
[INFO] [stderr]    Compiling litrs v0.4.2
[INFO] [stderr]    Compiling regex-automata v0.4.11
[INFO] [stderr]    Compiling serde_yaml v0.9.34+deprecated
[INFO] [stderr]    Compiling lexical-sort v0.3.1
[INFO] [stderr]    Compiling icu_provider v2.0.0
[INFO] [stderr]    Compiling document-features v0.2.11
[INFO] [stderr]    Compiling icu_properties v2.0.1
[INFO] [stderr]    Compiling icu_normalizer v2.0.0
[INFO] [stderr]    Compiling shared-buffer v0.1.4
[INFO] [stderr]    Compiling miniz_oxide v0.8.9
[INFO] [stderr]    Compiling rand v0.8.5
[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/beta-2025-10-28-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=40b1d5b0600dcfd5 -C extra-filename=-fcda8429019e605f --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-3961f8809e272ccb.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-557d48b6199c64f2.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-9ad4622e9362cad2.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" "f4612401e89e31ccce7ad01904e6a80261cae5e146f1a67509edcde34f4ae18e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4612401e89e31ccce7ad01904e6a80261cae5e146f1a67509edcde34f4ae18e", kill_on_drop: false }`
[INFO] [stdout] f4612401e89e31ccce7ad01904e6a80261cae5e146f1a67509edcde34f4ae18e