[INFO] fetching crate mm2 0.25.6...
[INFO] testing mm2-0.25.6 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate mm2 0.25.6 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate mm2 0.25.6
[INFO] finished tweaking crates.io crate mm2 0.25.6
[INFO] tweaked toml for crates.io crate mm2 0.25.6 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mm2 0.25.6 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 mm2 0.25.6 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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 35c6bad20a54eb0cc77c1eabc3ab8dc2f7f851856d1dd91cac9d26a5977625a6
[INFO] running `Command { std: "docker" "start" "-a" "35c6bad20a54eb0cc77c1eabc3ab8dc2f7f851856d1dd91cac9d26a5977625a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "35c6bad20a54eb0cc77c1eabc3ab8dc2f7f851856d1dd91cac9d26a5977625a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35c6bad20a54eb0cc77c1eabc3ab8dc2f7f851856d1dd91cac9d26a5977625a6", kill_on_drop: false }`
[INFO] [stdout] 35c6bad20a54eb0cc77c1eabc3ab8dc2f7f851856d1dd91cac9d26a5977625a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 81fb1642ef621e4e656e565c64fd83e26bb799b91237dad2e82c6cc84a78cddf
[INFO] running `Command { std: "docker" "start" "-a" "81fb1642ef621e4e656e565c64fd83e26bb799b91237dad2e82c6cc84a78cddf", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling unicode-ident v1.0.15
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling libm v0.2.11
[INFO] [stderr]    Compiling pkg-config v0.3.31
[INFO] [stderr]    Compiling paste v1.0.15
[INFO] [stderr]    Compiling serde v1.0.217
[INFO] [stderr]    Compiling bytemuck v1.21.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling matrixmultiply v0.3.9
[INFO] [stderr]    Compiling rawpointer v0.2.1
[INFO] [stderr]    Compiling glob v0.3.2
[INFO] [stderr]    Compiling litemap v0.7.4
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling smallvec v1.13.2
[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]    Compiling once_cell v1.20.2
[INFO] [stderr]    Compiling rustversion v1.0.19
[INFO] [stderr]    Compiling safe_arch v0.7.4
[INFO] [stderr]    Compiling heck v0.5.0
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling wide v0.7.32
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]    Compiling libloading v0.8.6
[INFO] [stderr]    Compiling itoa v1.0.14
[INFO] [stderr]    Compiling either v1.13.0
[INFO] [stderr]    Compiling bindgen v0.69.5
[INFO] [stderr]    Compiling newtype_derive v0.1.6
[INFO] [stderr]    Compiling syn v2.0.96
[INFO] [stderr]    Compiling itertools v0.12.1
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling clang-sys v1.8.1
[INFO] [stderr]    Compiling bitflags v2.8.0
[INFO] [stderr]    Compiling ryu v1.0.18
[INFO] [stderr]    Compiling feature-probe v0.1.1
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling tracing-core v0.1.33
[INFO] [stderr]    Compiling jobserver v0.1.32
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling fs-utils v1.1.4
[INFO] [stderr]    Compiling bytecount v0.6.8
[INFO] [stderr]    Compiling anyhow v1.0.95
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling bv v0.11.1
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling indexmap v2.7.1
[INFO] [stderr]    Compiling cc v1.2.10
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling approx v0.5.1
[INFO] [stderr]    Compiling csv-core v0.1.11
[INFO] [stderr]    Compiling percent-encoding v2.3.1
[INFO] [stderr]    Compiling num-rational v0.4.2
[INFO] [stderr]    Compiling custom_derive v0.1.7
[INFO] [stderr]    Compiling thiserror v2.0.11
[INFO] [stderr]    Compiling fixedbitset v0.4.2
[INFO] [stderr]    Compiling portable-atomic v1.10.0
[INFO] [stderr]    Compiling petgraph v0.6.5
[INFO] [stderr]    Compiling form_urlencoded v1.2.1
[INFO] [stderr]    Compiling itertools-num v0.1.3
[INFO] [stderr]    Compiling simba v0.8.1
[INFO] [stderr]    Compiling simba v0.6.0
[INFO] [stderr]    Compiling cmake v0.1.52
[INFO] [stderr]    Compiling openssl-src v300.4.1+3.4.0
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling triple_accel v0.4.0
[INFO] [stderr]    Compiling bit-vec v0.8.0
[INFO] [stderr]    Compiling serde_json v1.0.137
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]    Compiling unicode-width v0.2.0
[INFO] [stderr]    Compiling editdistancek v1.0.2
[INFO] [stderr]    Compiling deranged v0.3.11
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling bit-set v0.8.0
[INFO] [stderr]    Compiling ndarray v0.16.1
[INFO] [stderr]    Compiling libz-sys v1.1.21
[INFO] [stderr]    Compiling openssl-sys v0.9.104
[INFO] [stderr]    Compiling cexpr v0.6.0
[INFO] [stderr]    Compiling bzip2-sys v0.1.11+1.0.8
[INFO] [stderr]    Compiling regex v1.11.1
[INFO] [stderr]    Compiling curl-sys v0.4.78+curl-8.11.0
[INFO] [stderr]    Compiling lzma-sys v0.1.20
[INFO] [stderr]    Compiling minimap2-sys v0.1.21+minimap2.2.28
[INFO] [stderr]    Compiling console v0.15.10
[INFO] [stderr]    Compiling ordered-float v4.6.0
[INFO] [stderr]    Compiling itertools v0.13.0
[INFO] [stderr]    Compiling buffer-redux v1.0.2
[INFO] [stderr]    Compiling ieee754 v0.2.6
[INFO] [stderr]    Compiling log v0.4.25
[INFO] [stderr]    Compiling strum v0.26.3
[INFO] [stderr]    Compiling sha1_smol v1.0.1
[INFO] [stderr]    Compiling time-core v0.1.2
[INFO] [stderr]    Compiling linear-map v1.2.0
[INFO] [stderr]    Compiling iana-time-zone v0.1.61
[INFO] [stderr]    Compiling overload v0.1.1
[INFO] [stderr]    Compiling number_prefix v0.4.0
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling time v0.3.37
[INFO] [stderr]    Compiling nu-ansi-term v0.46.0
[INFO] [stderr]    Compiling indicatif v0.17.9
[INFO] [stderr]    Compiling clap_builder v4.5.27
[INFO] [stderr]    Compiling bit-set v0.5.3
[INFO] [stderr]    Compiling chrono v0.4.39
[INFO] [stderr]    Compiling uuid v1.12.1
[INFO] [stderr]    Compiling needletail v0.6.1
[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-2.0.96/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=0a81c125d495412b -C extra-filename=-8eae1ea86b39ff85 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-459c7e3b1afe5886.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-5f32ce11b3aaf330.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-6b6dfb470f4a1be7.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" "81fb1642ef621e4e656e565c64fd83e26bb799b91237dad2e82c6cc84a78cddf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81fb1642ef621e4e656e565c64fd83e26bb799b91237dad2e82c6cc84a78cddf", kill_on_drop: false }`
[INFO] [stdout] 81fb1642ef621e4e656e565c64fd83e26bb799b91237dad2e82c6cc84a78cddf
