[INFO] fetching crate proofmode 0.2.0...
[INFO] testing proofmode-0.2.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate proofmode 0.2.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate proofmode 0.2.0
[INFO] finished tweaking crates.io crate proofmode 0.2.0
[INFO] tweaked toml for crates.io crate proofmode 0.2.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate proofmode 0.2.0 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 proofmode 0.2.0 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 46c3c5fe9a97dde9a31ffce3c0fd3c167a719129053fe1313fbc91326fddd91b
[INFO] running `Command { std: "docker" "start" "-a" "46c3c5fe9a97dde9a31ffce3c0fd3c167a719129053fe1313fbc91326fddd91b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "46c3c5fe9a97dde9a31ffce3c0fd3c167a719129053fe1313fbc91326fddd91b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46c3c5fe9a97dde9a31ffce3c0fd3c167a719129053fe1313fbc91326fddd91b", kill_on_drop: false }`
[INFO] [stdout] 46c3c5fe9a97dde9a31ffce3c0fd3c167a719129053fe1313fbc91326fddd91b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 3bf6bbc99d6e5b6797980cb1c4c49ecfec2c6265b9bc1a8227dc7cb2a1a7e440
[INFO] running `Command { std: "docker" "start" "-a" "3bf6bbc99d6e5b6797980cb1c4c49ecfec2c6265b9bc1a8227dc7cb2a1a7e440", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.60
[INFO] [stderr]    Compiling autocfg v1.2.0
[INFO] [stderr]    Compiling libc v0.2.154
[INFO] [stderr]    Compiling serde v1.0.200
[INFO] [stderr]    Compiling libm v0.2.8
[INFO] [stderr]    Compiling memchr v2.7.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling either v1.11.0
[INFO] [stderr]    Compiling thiserror v1.0.61
[INFO] [stderr]    Compiling itoa v1.0.11
[INFO] [stderr]    Compiling subtle v2.5.0
[INFO] [stderr]    Compiling const-oid v0.9.6
[INFO] [stderr]    Compiling cc v1.0.96
[INFO] [stderr]    Compiling allocator-api2 v0.2.18
[INFO] [stderr]    Compiling bytes v1.6.0
[INFO] [stderr]    Compiling log v0.4.21
[INFO] [stderr]    Compiling smallvec v1.13.2
[INFO] [stderr]    Compiling simd-adler32 v0.3.7
[INFO] [stderr]    Compiling ryu v1.0.17
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling base64ct v1.6.0
[INFO] [stderr]    Compiling miniz_oxide v0.7.2
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]    Compiling pem-rfc7468 v0.7.0
[INFO] [stderr]    Compiling iana-time-zone v0.1.60
[INFO] [stderr]    Compiling regex-syntax v0.8.3
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling crc32fast v1.4.0
[INFO] [stderr]    Compiling target-features v0.1.6
[INFO] [stderr]    Compiling smartstring v1.0.1
[INFO] [stderr]    Compiling serde_json v1.0.116
[INFO] [stderr]    Compiling simdutf8 v0.1.4
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling getrandom v0.2.14
[INFO] [stderr]    Compiling crossbeam-deque v0.8.5
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling polars-utils v0.37.0
[INFO] [stderr]    Compiling pkg-config v0.3.30
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling socket2 v0.5.7
[INFO] [stderr]    Compiling num_cpus v1.16.0
[INFO] [stderr]    Compiling mio v0.8.11
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling lexical-util v0.8.5
[INFO] [stderr]    Compiling polars-arrow v0.37.0
[INFO] [stderr]    Compiling semver v1.0.22
[INFO] [stderr]    Compiling time-macros v0.2.18
[INFO] [stderr]    Compiling rayon v1.10.0
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling ff v0.13.0
[INFO] [stderr]    Compiling flate2 v1.0.30
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling foreign_vec v0.1.0
[INFO] [stderr]    Compiling strength_reduce v0.2.4
[INFO] [stderr]    Compiling fast-float v0.2.0
[INFO] [stderr]    Compiling openssl-sys v0.9.102
[INFO] [stderr]    Compiling ring v0.17.8
[INFO] [stderr]    Compiling tokio v1.37.0
[INFO] [stderr]    Compiling streaming-iterator v0.1.9
[INFO] [stderr]    Compiling ethnum v1.5.0
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.92
[INFO] [stderr]    Compiling rustversion v1.0.15
[INFO] [stderr]    Compiling radium v0.7.0
[INFO] [stderr]    Compiling atoi_simd v0.15.6
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling backtrace v0.3.71
[INFO] [stderr]    Compiling tracing v0.1.40
[INFO] [stderr]    Compiling group v0.13.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling http v1.1.0
[INFO] [stderr]    Compiling regex-automata v0.4.6
[INFO] [stderr]    Compiling futures-io v0.3.30
[INFO] [stderr]    Compiling typewit_proc_macros v1.8.1
[INFO] [stderr]    Compiling gimli v0.28.1
[INFO] [stderr]    Compiling rustls-pki-types v1.5.0
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling time v0.3.36
[INFO] [stderr]    Compiling tap v1.0.1
[INFO] [stderr]    Compiling ucd-trie v0.1.6
[INFO] [stderr]    Compiling wyz v0.5.1
[INFO] [stderr]    Compiling futures-util v0.3.30
[INFO] [stderr]    Compiling typewit v1.9.0
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling const-random-macro v0.1.16
[INFO] [stderr]    Compiling lexical-write-integer v0.8.5
[INFO] [stderr]    Compiling lexical-parse-integer v0.8.6
[INFO] [stderr]    Compiling hashbrown v0.14.5
[INFO] [stderr]    Compiling object v0.32.2
[INFO] [stderr]    Compiling polars-compute v0.37.0
[INFO] [stderr]    Compiling half v2.4.1
[INFO] [stderr]    Compiling ref-cast v1.0.22
[INFO] [stderr]    Compiling anyhow v1.0.82
[INFO] [stderr]    Compiling openssl v0.10.64
[INFO] [stderr]    Compiling block-padding v0.2.1
[INFO] [stderr]    Compiling bumpalo v3.16.0
[INFO] [stderr]    Compiling platforms v3.4.0
[INFO] [stderr]    Compiling heapless v0.8.0
[INFO] [stderr]    Compiling funty v2.0.0
[INFO] [stderr]    Compiling addr2line v0.21.0
[INFO] [stderr]    Compiling indexmap v2.2.6
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.92
[INFO] [stderr]    Compiling curve25519-dalek v4.1.2
[INFO] [stderr]    Compiling lexical-parse-float v0.8.5
[INFO] [stderr]    Compiling lexical-write-float v0.8.5
[INFO] [stderr]    Compiling const-random v0.1.18
[INFO] [stderr]    Compiling konst_kernel v0.3.9
[INFO] [stderr]    Compiling unicode-normalization v0.1.23
[INFO] [stderr]    Compiling http-body v1.0.0
[INFO] [stderr]    Compiling regex v1.10.4
[INFO] [stderr]    Compiling bitvec v1.0.1
[INFO] [stderr]    Compiling darling_core v0.14.4
[INFO] [stderr]    Compiling serde_derive v1.0.200
[INFO] [stderr]    Compiling zeroize_derive v1.4.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.61
[INFO] [stderr]    Compiling bytemuck_derive v1.6.0
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling zeroize v1.7.0
[INFO] [stderr]    Compiling displaydoc v0.2.4
[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"' --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", "quote", "test", "visit", "visit-mut"))' -C metadata=2324793f187d6b7d -C extra-filename=-b313b9cbfcd4172a --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-16aa65c269b94be1.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-a36e532aafe25f76.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-772f13ecc3fc189a.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" "3bf6bbc99d6e5b6797980cb1c4c49ecfec2c6265b9bc1a8227dc7cb2a1a7e440", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3bf6bbc99d6e5b6797980cb1c4c49ecfec2c6265b9bc1a8227dc7cb2a1a7e440", kill_on_drop: false }`
[INFO] [stdout] 3bf6bbc99d6e5b6797980cb1c4c49ecfec2c6265b9bc1a8227dc7cb2a1a7e440