[INFO] fetching crate melnode 0.20.8...
[INFO] testing melnode-0.20.8 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate melnode 0.20.8 into /workspace/builds/worker-4-tc2/source
[INFO] removed /workspace/builds/worker-4-tc2/source/rust-toolchain
[INFO] started tweaking crates.io crate melnode 0.20.8
[INFO] finished tweaking crates.io crate melnode 0.20.8
[INFO] tweaked toml for crates.io crate melnode 0.20.8 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate melnode 0.20.8 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 melnode 0.20.8 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] 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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 39ef4b6e4cc90e82032d35035d48d2a36466c4a69a96737239ca3930004cc3a6
[INFO] running `Command { std: "docker" "start" "-a" "39ef4b6e4cc90e82032d35035d48d2a36466c4a69a96737239ca3930004cc3a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "39ef4b6e4cc90e82032d35035d48d2a36466c4a69a96737239ca3930004cc3a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39ef4b6e4cc90e82032d35035d48d2a36466c4a69a96737239ca3930004cc3a6", kill_on_drop: false }`
[INFO] [stdout] 39ef4b6e4cc90e82032d35035d48d2a36466c4a69a96737239ca3930004cc3a6
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] baa3d65e48daa8efcbfffd8e614882c62b40293ffc5b74d1900f0e1ca0bceb55
[INFO] running `Command { std: "docker" "start" "-a" "baa3d65e48daa8efcbfffd8e614882c62b40293ffc5b74d1900f0e1ca0bceb55", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.82
[INFO] [stderr]    Compiling libc v0.2.154
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]    Compiling once_cell v1.19.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling pin-project-lite v0.2.14
[INFO] [stderr]    Compiling serde v1.0.201
[INFO] [stderr]    Compiling futures-core v0.3.30
[INFO] [stderr]    Compiling cc v1.0.97
[INFO] [stderr]    Compiling parking v2.2.0
[INFO] [stderr]    Compiling memchr v2.7.2
[INFO] [stderr]    Compiling log v0.4.21
[INFO] [stderr]    Compiling futures-io v0.3.30
[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling smallvec v1.13.2
[INFO] [stderr]    Compiling fastrand v1.9.0
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling fastrand v2.1.0
[INFO] [stderr]    Compiling thiserror v1.0.60
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]    Compiling tracing-core v0.1.32
[INFO] [stderr]    Compiling futures-lite v2.3.0
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling event-listener v2.5.3
[INFO] [stderr]    Compiling arrayvec v0.7.4
[INFO] [stderr]    Compiling waker-fn v1.2.0
[INFO] [stderr]    Compiling rustix v0.38.34
[INFO] [stderr]    Compiling zerocopy v0.7.34
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]    Compiling polling v2.8.0
[INFO] [stderr]    Compiling zeroize v1.7.0
[INFO] [stderr]    Compiling concurrent-queue v2.5.0
[INFO] [stderr]    Compiling bitflags v2.5.0
[INFO] [stderr]    Compiling linux-raw-sys v0.4.13
[INFO] [stderr]    Compiling allocator-api2 v0.2.18
[INFO] [stderr]    Compiling event-listener v4.0.3
[INFO] [stderr]    Compiling event-listener v5.3.0
[INFO] [stderr]    Compiling tracing v0.1.40
[INFO] [stderr]    Compiling event-listener-strategy v0.4.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling constant_time_eq v0.3.0
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling async-lock v3.3.0
[INFO] [stderr]    Compiling futures-lite v1.13.0
[INFO] [stderr]    Compiling rustix v0.37.27
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling arrayref v0.3.7
[INFO] [stderr]    Compiling syn v2.0.63
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling block-buffer v0.9.0
[INFO] [stderr]    Compiling event-listener-strategy v0.5.2
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling hashbrown v0.14.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling async-lock v2.8.0
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling async-io v1.13.0
[INFO] [stderr]    Compiling regex-syntax v0.8.3
[INFO] [stderr]    Compiling blake3 v1.5.1
[INFO] [stderr]    Compiling opaque-debug v0.3.1
[INFO] [stderr]    Compiling async-task v4.7.1
[INFO] [stderr]    Compiling subtle-ng v2.5.0
[INFO] [stderr]    Compiling itoa v1.0.11
[INFO] [stderr]    Compiling atomic-waker v1.1.2
[INFO] [stderr]    Compiling linux-raw-sys v0.3.8
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling cpufeatures v0.2.12
[INFO] [stderr]    Compiling equivalent v1.0.1
[INFO] [stderr]    Compiling sha2 v0.9.9
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]    Compiling piper v0.2.2
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling curve25519-dalek-ng v4.1.1
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling async-channel v2.3.0
[INFO] [stderr]    Compiling indexmap v2.2.6
[INFO] [stderr]    Compiling socket2 v0.4.10
[INFO] [stderr]    Compiling ahash v0.7.8
[INFO] [stderr]    Compiling toml_datetime v0.6.5
[INFO] [stderr]    Compiling tap v1.0.1
[INFO] [stderr]    Compiling either v1.11.0
[INFO] [stderr]    Compiling winnow v0.5.40
[INFO] [stderr]    Compiling blocking v1.6.0
[INFO] [stderr]    Compiling crossbeam-deque v0.8.5
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.12
[INFO] [stderr]    Compiling base32 v0.4.0
[INFO] [stderr]    Compiling anyhow v1.0.83
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]    Compiling num-bigint v0.4.5
[INFO] [stderr]    Compiling regex-automata v0.4.6
[INFO] [stderr]    Compiling num_cpus v1.16.0
[INFO] [stderr]    Compiling instant v0.1.12
[INFO] [stderr]    Compiling proc-macro-error v0.4.12
[INFO] [stderr] error: could not compile `regex-syntax` (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 regex_syntax --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/regex-syntax-0.8.3/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C opt-level=1 -C panic=abort -C embed-bitcode=no -C debuginfo=2 -C debug-assertions=on --cfg 'feature="default"' --cfg 'feature="std"' --cfg 'feature="unicode"' --cfg 'feature="unicode-age"' --cfg 'feature="unicode-bool"' --cfg 'feature="unicode-case"' --cfg 'feature="unicode-gencat"' --cfg 'feature="unicode-perl"' --cfg 'feature="unicode-script"' --cfg 'feature="unicode-segment"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("arbitrary", "default", "std", "unicode", "unicode-age", "unicode-bool", "unicode-case", "unicode-gencat", "unicode-perl", "unicode-script", "unicode-segment"))' -C metadata=45c1b33993b147f8 -C extra-filename=-017d32541be20870 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --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" "baa3d65e48daa8efcbfffd8e614882c62b40293ffc5b74d1900f0e1ca0bceb55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "baa3d65e48daa8efcbfffd8e614882c62b40293ffc5b74d1900f0e1ca0bceb55", kill_on_drop: false }`
[INFO] [stdout] baa3d65e48daa8efcbfffd8e614882c62b40293ffc5b74d1900f0e1ca0bceb55
