[INFO] fetching crate proof_system 0.34.0...
[INFO] documenting proof_system-0.34.0 against beta-2025-09-21 for beta-rustdoc-1.91-2
[INFO] extracting crate proof_system 0.34.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate proof_system 0.34.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate proof_system 0.34.0
[INFO] tweaked toml for crates.io crate proof_system 0.34.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate proof_system 0.34.0 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 proof_system 0.34.0 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-2025-09-21" "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] 4632340461ef91abd9390564ec33e621f691c5affaef11ed8be941704ae96bb9
[INFO] running `Command { std: "docker" "start" "-a" "4632340461ef91abd9390564ec33e621f691c5affaef11ed8be941704ae96bb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4632340461ef91abd9390564ec33e621f691c5affaef11ed8be941704ae96bb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4632340461ef91abd9390564ec33e621f691c5affaef11ed8be941704ae96bb9", kill_on_drop: false }`
[INFO] [stdout] 4632340461ef91abd9390564ec33e621f691c5affaef11ed8be941704ae96bb9
[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" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f9daae537a66b99b64b77bb676bf25ba9370181b0daa2e51b227e5a84df2cf33
[INFO] running `Command { std: "docker" "start" "-a" "f9daae537a66b99b64b77bb676bf25ba9370181b0daa2e51b227e5a84df2cf33", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]    Compiling rayon-core v1.11.0
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking generic-array v0.14.7
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking crossbeam-channel v0.5.8
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling cc v1.2.31
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling serde v1.0.201
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]     Checking itertools v0.14.0
[INFO] [stderr]    Compiling litemap v0.7.5
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]    Compiling icu_locid_transform_data v1.5.1
[INFO] [stderr]    Compiling icu_properties_data v1.5.1
[INFO] [stderr]    Compiling icu_normalizer_data v1.5.1
[INFO] [stderr]     Checking tracing-core v0.1.31
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling target-lexicon v0.12.16
[INFO] [stderr]     Checking hashbrown v0.13.2
[INFO] [stderr]     Checking hashbrown v0.14.5
[INFO] [stderr]     Checking simdutf8 v0.1.4
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling rustls-pki-types v1.12.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking aead v0.5.2
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking num-complex v0.4.4
[INFO] [stderr]    Compiling glob v0.3.2
[INFO] [stderr]    Compiling cranelift-isle v0.110.2
[INFO] [stderr]     Checking miniz_oxide v0.8.9
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking rayon v1.7.0
[INFO] [stderr]     Checking hmac v0.12.1
[INFO] [stderr]     Checking inout v0.1.3
[INFO] [stderr]     Checking indexmap v2.4.0
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.110.3
[INFO] [stderr]    Compiling bytecheck v0.6.11
[INFO] [stderr]    Compiling rustix v1.0.8
[INFO] [stderr]    Compiling bitflags v2.5.0
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.110.3
[INFO] [stderr]     Checking hkdf v0.12.3
[INFO] [stderr]    Compiling object v0.36.7
[INFO] [stderr]    Compiling ring v0.17.14
[INFO] [stderr]    Compiling thiserror v1.0.65
[INFO] [stderr]    Compiling corosensei v0.2.2
[INFO] [stderr]     Checking cranelift-bitset v0.110.3
[INFO] [stderr]    Compiling clang-sys v1.8.1
[INFO] [stderr]    Compiling regex-syntax v0.7.5
[INFO] [stderr]     Checking gimli v0.31.1
[INFO] [stderr]    Compiling percent-encoding v2.3.1
[INFO] [stderr]    Compiling rustls v0.23.31
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling form_urlencoded v1.2.1
[INFO] [stderr]     Checking cranelift-entity v0.110.2
[INFO] [stderr]     Checking twox-hash v1.6.3
[INFO] [stderr]     Checking lock_api v0.4.10
[INFO] [stderr]     Checking parking_lot_core v0.9.8
[INFO] [stderr]     Checking tracing-subscriber v0.2.25
[INFO] [stderr]     Checking num v0.4.1
[INFO] [stderr]    Compiling webpki-roots v1.0.2
[INFO] [stderr]    Compiling crc32fast v1.5.0
[INFO] [stderr]    Compiling libloading v0.8.8
[INFO] [stderr]    Compiling bindgen v0.70.1
[INFO] [stderr]     Checking arbitrary v1.4.1
[INFO] [stderr]     Checking xxhash-rust v0.8.12
[INFO] [stderr]     Checking fallible-iterator v0.3.0
[INFO] [stderr]    Compiling wasmparser v0.224.1
[INFO] [stderr]     Checking addr2line v0.24.2
[INFO] [stderr]     Checking slice-group-by v0.3.1
[INFO] [stderr]     Checking more-asserts v0.2.2
[INFO] [stderr]    Compiling regex-automata v0.3.8
[INFO] [stderr]     Checking ark-std v0.4.0
[INFO] [stderr]     Checking regalloc2 v0.9.3
[INFO] [stderr]     Checking cranelift-control v0.110.3
[INFO] [stderr]     Checking region v3.0.2
[INFO] [stderr]    Compiling itertools v0.12.1
[INFO] [stderr]     Checking gimli v0.28.1
[INFO] [stderr]    Compiling cexpr v0.6.0
[INFO] [stderr]    Compiling xattr v1.5.1
[INFO] [stderr]    Compiling flate2 v1.1.2
[INFO] [stderr]    Compiling webpki-roots v0.26.11
[INFO] [stderr]     Checking dashmap v6.0.1
[INFO] [stderr]     Checking cranelift-bforest v0.110.2
[INFO] [stderr]    Compiling oblivious_transfer_protocols v0.12.0
[INFO] [stderr]    Compiling filetime v0.2.25
[INFO] [stderr]     Checking memmap2 v0.6.2
[INFO] [stderr]     Checking libunwind v1.3.3
[INFO] [stderr]    Compiling darling_core v0.13.4
[INFO] [stderr]    Compiling base64 v0.22.1
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling darling_core v0.20.3
[INFO] [stderr]    Compiling prettyplease v0.2.36
[INFO] [stderr]     Checking shared-buffer v0.1.4
[INFO] [stderr]    Compiling tar v0.4.44
[INFO] [stderr]    Compiling cranelift-codegen v0.110.2
[INFO] [stderr]     Checking wasm-encoder v0.221.3
[INFO] [stderr]    Compiling proc-macro-error-attr2 v2.0.0
[INFO] [stderr]    Compiling cmake v0.1.54
[INFO] [stderr]     Checking self_cell v1.0.4
[INFO] [stderr]    Compiling wasmer-compiler-cranelift v6.0.1
[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-2.0.104/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="fold"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="visit"' --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=86aae8ecd14bd3d9 -C extra-filename=-6bd32f16d51ad3f5 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-fa0371b7584724d5.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-6f011f1d06991ecf.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-88a20ab10d75ac1b.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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=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"' --cfg 'feature="visit"' --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=63322f741bf45bbd -C extra-filename=-a1bf9689d22b3e1c --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-fa0371b7584724d5.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-6f011f1d06991ecf.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-88a20ab10d75ac1b.rmeta --cap-lints allow --cap-lints=warn --cfg syn_disable_nightly_tests` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "f9daae537a66b99b64b77bb676bf25ba9370181b0daa2e51b227e5a84df2cf33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9daae537a66b99b64b77bb676bf25ba9370181b0daa2e51b227e5a84df2cf33", kill_on_drop: false }`
[INFO] [stdout] f9daae537a66b99b64b77bb676bf25ba9370181b0daa2e51b227e5a84df2cf33