[INFO] fetching crate nautilus-analysis 0.55.0...
[INFO] testing nautilus-analysis-0.55.0 against beta-2026-04-21 for beta-1.96-1
[INFO] extracting crate nautilus-analysis 0.55.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate nautilus-analysis 0.55.0
[INFO] finished tweaking crates.io crate nautilus-analysis 0.55.0
[INFO] tweaked toml for crates.io crate nautilus-analysis 0.55.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate nautilus-analysis 0.55.0 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate nautilus-analysis 0.55.0 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-2026-04-21" "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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 35c8823d91a58f8654d43d77bcc84445487da88768a207c14408c1565cd933c5
[INFO] running `Command { std: "docker" "start" "-a" "35c8823d91a58f8654d43d77bcc84445487da88768a207c14408c1565cd933c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "35c8823d91a58f8654d43d77bcc84445487da88768a207c14408c1565cd933c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35c8823d91a58f8654d43d77bcc84445487da88768a207c14408c1565cd933c5", kill_on_drop: false }`
[INFO] [stdout] 35c8823d91a58f8654d43d77bcc84445487da88768a207c14408c1565cd933c5
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d3509f4eac724cb259576e13d5a631f3a8d332425b34f96f5f484ef9b63b269e
[INFO] running `Command { std: "docker" "start" "-a" "d3509f4eac724cb259576e13d5a631f3a8d332425b34f96f5f484ef9b63b269e", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling libc v0.2.184
[INFO] [stderr]    Compiling zerocopy v0.8.48
[INFO] [stderr]    Compiling zerocopy-derive v0.8.48
[INFO] [stderr]    Compiling bitflags v2.11.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling ahash v0.8.12
[INFO] [stderr]    Compiling lexical-util v1.0.7
[INFO] [stderr]    Compiling winnow v1.0.1
[INFO] [stderr]    Compiling darling_core v0.20.11
[INFO] [stderr]    Compiling darling_core v0.23.0
[INFO] [stderr]    Compiling rand_core v0.10.0
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling regex-syntax v0.8.10
[INFO] [stderr]    Compiling prettyplease v0.2.37
[INFO] [stderr]    Compiling getrandom v0.4.2
[INFO] [stderr]    Compiling arrow-schema v58.1.0
[INFO] [stderr]    Compiling aho-corasick v1.1.4
[INFO] [stderr]    Compiling indexmap v2.13.1
[INFO] [stderr]    Compiling flatbuffers v25.12.19
[INFO] [stderr]    Compiling rstest_macros v0.26.1
[INFO] [stderr]    Compiling csv-core v0.1.13
[INFO] [stderr]    Compiling lexical-parse-integer v1.0.6
[INFO] [stderr]    Compiling lexical-write-integer v1.0.6
[INFO] [stderr]    Compiling lexical-parse-float v1.0.6
[INFO] [stderr]    Compiling proc-macro-error-attr2 v2.0.0
[INFO] [stderr]    Compiling toml_parser v1.1.2+spec-1.1.0
[INFO] [stderr]    Compiling lexical-write-float v1.0.6
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling atoi v2.0.0
[INFO] [stderr]    Compiling lexical-core v1.0.6
[INFO] [stderr]    Compiling rust_decimal v1.41.0
[INFO] [stderr]    Compiling regex-automata v0.4.14
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling anyhow v1.0.102
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling chacha20 v0.10.0
[INFO] [stderr]    Compiling rmp v0.8.15
[INFO] [stderr]    Compiling proc-macro-error2 v2.0.1
[INFO] [stderr]    Compiling relative-path v1.9.3
[INFO] [stderr]    Compiling simdutf8 v0.1.5
[INFO] [stderr]    Compiling bytecount v0.6.9
[INFO] [stderr]    Compiling implied-vol v2.0.0
[INFO] [stderr]    Compiling glob v0.3.3
[INFO] [stderr]    Compiling value-bag v1.12.0
[INFO] [stderr]    Compiling futures-util v0.3.32
[INFO] [stderr]    Compiling papergrid v0.17.0
[INFO] [stderr]    Compiling tabled_derive v0.11.0
[INFO] [stderr]    Compiling rand v0.10.0
[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-2026-04-21-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-0.8.10/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 -C debuginfo=2 --allow=unexpected_cfgs --check-cfg 'cfg(docsrs_regex)' --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=d42bdaf3aeb01183 -C extra-filename=-974ca1cfba39f0db --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" "d3509f4eac724cb259576e13d5a631f3a8d332425b34f96f5f484ef9b63b269e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3509f4eac724cb259576e13d5a631f3a8d332425b34f96f5f484ef9b63b269e", kill_on_drop: false }`
[INFO] [stdout] d3509f4eac724cb259576e13d5a631f3a8d332425b34f96f5f484ef9b63b269e