[INFO] fetching crate rfgrep 0.3.1...
[INFO] testing rfgrep-0.3.1 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate rfgrep 0.3.1 into /workspace/builds/worker-2-tc2/source
[INFO] removed /workspace/builds/worker-2-tc2/source/.cargo/config.toml
[INFO] started tweaking crates.io crate rfgrep 0.3.1
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate rfgrep 0.3.1
[INFO] tweaked toml for crates.io crate rfgrep 0.3.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rfgrep 0.3.1 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rfgrep 0.3.1 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" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 253e8f6b24ffd0fb2095b5598f90606f7d073d549867bcfd5fdec4cfdf512e57
[INFO] running `Command { std: "docker" "start" "-a" "253e8f6b24ffd0fb2095b5598f90606f7d073d549867bcfd5fdec4cfdf512e57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "253e8f6b24ffd0fb2095b5598f90606f7d073d549867bcfd5fdec4cfdf512e57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "253e8f6b24ffd0fb2095b5598f90606f7d073d549867bcfd5fdec4cfdf512e57", kill_on_drop: false }`
[INFO] [stdout] 253e8f6b24ffd0fb2095b5598f90606f7d073d549867bcfd5fdec4cfdf512e57
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] de212324b0b37e9311ffe06b1de273a00ca42cf4ccb64ee0d52b9f691af5cb2a
[INFO] running `Command { std: "docker" "start" "-a" "de212324b0b37e9311ffe06b1de273a00ca42cf4ccb64ee0d52b9f691af5cb2a", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling serde_core v1.0.226
[INFO] [stderr]    Compiling rustix v1.1.2
[INFO] [stderr]    Compiling linux-raw-sys v0.11.0
[INFO] [stderr]    Compiling regex-automata v0.4.10
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]    Compiling rustix v0.38.44
[INFO] [stderr]    Compiling serde v1.0.226
[INFO] [stderr]    Compiling nix v0.30.1
[INFO] [stderr]    Compiling pxfm v0.1.24
[INFO] [stderr]    Compiling mio v1.0.4
[INFO] [stderr]    Compiling instability v0.3.9
[INFO] [stderr]    Compiling protobuf v3.7.2
[INFO] [stderr]    Compiling rust_decimal v1.38.0
[INFO] [stderr]    Compiling clap_builder v4.5.48
[INFO] [stderr]    Compiling time-macros v0.2.24
[INFO] [stderr]    Compiling deranged v0.5.3
[INFO] [stderr]    Compiling parking_lot v0.12.4
[INFO] [stderr]    Compiling png v0.18.0
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling console v0.16.1
[INFO] [stderr]    Compiling signal-hook-mio v0.2.4
[INFO] [stderr]    Compiling castaway v0.2.4
[INFO] [stderr]    Compiling bstr v1.12.0
[INFO] [stderr]    Compiling uuid v1.18.1
[INFO] [stderr]    Compiling prometheus v0.14.0
[INFO] [stderr]    Compiling arrayvec v0.7.6
[INFO] [stderr]    Compiling x11rb-protocol v0.13.2
[INFO] [stderr]    Compiling num_threads v0.1.7
[INFO] [stderr]    Compiling dirs-sys v0.5.0
[INFO] [stderr]    Compiling crossterm v0.28.1
[INFO] [stderr]    Compiling compact_str v0.8.1
[INFO] [stderr]    Compiling cfb v0.7.3
[INFO] [stderr]    Compiling unicode-truncate v1.1.0
[INFO] [stderr]    Compiling unit-prefix v0.5.1
[INFO] [stderr]    Compiling time v0.3.44
[INFO] [stderr]    Compiling byte-unit v5.1.6
[INFO] [stderr]    Compiling indicatif v0.18.0
[INFO] [stderr]    Compiling chrono v0.4.42
[INFO] [stderr]    Compiling dirs v6.0.0
[INFO] [stderr]    Compiling lru v0.16.1
[INFO] [stderr]    Compiling ctrlc v3.5.0
[INFO] [stderr]    Compiling is-terminal v0.4.16
[INFO] [stderr]    Compiling simplelog v0.12.2
[INFO] [stderr]    Compiling num_cpus v1.17.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling memmap2 v0.9.8
[INFO] [stderr]    Compiling infer v0.19.0
[INFO] [stderr]    Compiling moxcms v0.7.5
[INFO] [stderr]    Compiling regex v1.11.2
[INFO] [stderr]    Compiling globset v0.4.16
[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-2025-09-21-x86_64-unknown-linux-gnu/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"' --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=74c5238e082f1357 -C extra-filename=-3336ffd21cccdfcf --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-8b6071bff2f2593c.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-9ad4622e9362cad2.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "de212324b0b37e9311ffe06b1de273a00ca42cf4ccb64ee0d52b9f691af5cb2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de212324b0b37e9311ffe06b1de273a00ca42cf4ccb64ee0d52b9f691af5cb2a", kill_on_drop: false }`
[INFO] [stdout] de212324b0b37e9311ffe06b1de273a00ca42cf4ccb64ee0d52b9f691af5cb2a