[INFO] fetching crate tracexec-backend-ptrace 0.17.0...
[INFO] testing tracexec-backend-ptrace-0.17.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate tracexec-backend-ptrace 0.17.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate tracexec-backend-ptrace 0.17.0
[INFO] finished tweaking crates.io crate tracexec-backend-ptrace 0.17.0
[INFO] tweaked toml for crates.io crate tracexec-backend-ptrace 0.17.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate tracexec-backend-ptrace 0.17.0 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 tracexec-backend-ptrace 0.17.0 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-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 55cc679dea30e0e654b1b166cc5ef78252d844188f34a2cf7a8e4aef97606d53
[INFO] running `Command { std: "docker" "start" "-a" "55cc679dea30e0e654b1b166cc5ef78252d844188f34a2cf7a8e4aef97606d53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "55cc679dea30e0e654b1b166cc5ef78252d844188f34a2cf7a8e4aef97606d53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55cc679dea30e0e654b1b166cc5ef78252d844188f34a2cf7a8e4aef97606d53", kill_on_drop: false }`
[INFO] [stdout] 55cc679dea30e0e654b1b166cc5ef78252d844188f34a2cf7a8e4aef97606d53
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 76609b7195e4db6645f8cd35d7273625ea7578ec0a8029714d3ecfbe6f3d4af6
[INFO] running `Command { std: "docker" "start" "-a" "76609b7195e4db6645f8cd35d7273625ea7578ec0a8029714d3ecfbe6f3d4af6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.180
[INFO] [stderr]    Compiling unicode-segmentation v1.12.0
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling object v0.37.3
[INFO] [stderr]    Compiling semver v1.0.27
[INFO] [stderr]    Compiling quote v1.0.44
[INFO] [stderr]    Compiling toml_parser v1.0.9+spec-1.1.0
[INFO] [stderr]    Compiling indexmap v2.13.0
[INFO] [stderr]    Compiling regex-syntax v0.8.9
[INFO] [stderr]    Compiling bitflags v2.11.0
[INFO] [stderr]    Compiling gimli v0.32.3
[INFO] [stderr]    Compiling signal-hook v0.3.18
[INFO] [stderr]    Compiling zerocopy v0.8.39
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling ahash v0.8.12
[INFO] [stderr]    Compiling miniz_oxide v0.8.9
[INFO] [stderr]    Compiling tracing-subscriber v0.3.22
[INFO] [stderr]    Compiling rustc-demangle v0.1.27
[INFO] [stderr]    Compiling eyre v0.6.12
[INFO] [stderr]    Compiling rustc_version v0.4.1
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling convert_case v0.6.0
[INFO] [stderr]    Compiling convert_case v0.10.0
[INFO] [stderr]    Compiling rustix v1.1.3
[INFO] [stderr]    Compiling clap_lex v1.0.0
[INFO] [stderr]    Compiling color-spantrace v0.3.0
[INFO] [stderr]    Compiling nix v0.31.1
[INFO] [stderr]    Compiling nutype_macros v0.6.2
[INFO] [stderr]    Compiling clap_builder v4.5.60
[INFO] [stderr]    Compiling toml_edit v0.23.10+spec-1.0.0
[INFO] [stderr]    Compiling owo-colors v4.2.3
[INFO] [stderr]    Compiling winnow v0.7.14
[INFO] [stderr]    Compiling urlencoding v2.1.3
[INFO] [stderr]    Compiling indenter v0.3.4
[INFO] [stderr]    Compiling linux-raw-sys v0.11.0
[INFO] [stderr]    Compiling is_ci v1.2.0
[INFO] [stderr]    Compiling litrs v1.0.0
[INFO] [stderr]    Compiling hashbrown v0.14.5
[INFO] [stderr]    Compiling libseccomp-sys v0.3.0
[INFO] [stderr]    Compiling foldhash v0.1.5
[INFO] [stderr]    Compiling hashbrown v0.15.5
[INFO] [stderr]    Compiling libseccomp v0.4.0
[INFO] [stderr]    Compiling document-features v0.2.12
[INFO] [stderr]    Compiling errno v0.3.14
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling signal-hook-registry v1.4.8
[INFO] [stderr]    Compiling mio v1.1.1
[INFO] [stderr]    Compiling proc-macro-crate v3.4.0
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling is-terminal v0.4.17
[INFO] [stderr]    Compiling dashmap v5.5.3
[INFO] [stderr]    Compiling regex-automata v0.4.14
[INFO] [stderr]    Compiling signal-hook-mio v0.2.5
[INFO] [stderr]    Compiling supports-color v2.1.0
[INFO] [stderr]    Compiling dirs-sys v0.5.0
[INFO] [stderr]    Compiling socket2 v0.6.2
[INFO] [stderr]    Compiling addr2line v0.25.1
[INFO] [stderr]    Compiling toml_writer v1.0.6+spec-1.1.0
[INFO] [stderr]    Compiling futures-core v0.3.32
[INFO] [stderr]    Compiling itertools v0.14.0
[INFO] [stderr]    Compiling toml_datetime v1.0.0+spec-1.1.0
[INFO] [stderr]    Compiling serde_spanned v1.0.4
[INFO] [stderr]    Compiling kxxt-owo-colors v4.0.0
[INFO] [stderr]    Compiling directories v6.0.0
[INFO] [stderr]    Compiling toml v1.0.3+spec-1.1.0
[INFO] [stderr]    Compiling chrono v0.4.43
[INFO] [stderr]    Compiling darling_core v0.20.11
[INFO] [stderr]    Compiling tracing-attributes v0.1.31
[INFO] [stderr]    Compiling kinded_macros v0.3.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling enumflags2_derive v0.7.12
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling clap_derive v4.5.55
[INFO] [stderr]    Compiling derive_more-impl v2.1.1
[INFO] [stderr]    Compiling kinded v0.3.0
[INFO] [stderr]    Compiling backtrace v0.3.76
[INFO] [stderr]    Compiling enumflags2 v0.7.12
[INFO] [stderr]    Compiling snafu-derive v0.8.9
[INFO] [stderr]    Compiling strum_macros v0.27.2
[INFO] [stderr]    Compiling tokio-macros v2.6.0
[INFO] [stderr]    Compiling derive_more v2.1.1
[INFO] [stderr]    Compiling bstr v1.12.1
[INFO] [stderr] error: could not compile `regex-automata` (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_automata --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/regex-automata-0.4.14/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="alloc"' --cfg 'feature="default"' --cfg 'feature="dfa"' --cfg 'feature="dfa-build"' --cfg 'feature="dfa-onepass"' --cfg 'feature="dfa-search"' --cfg 'feature="hybrid"' --cfg 'feature="meta"' --cfg 'feature="nfa"' --cfg 'feature="nfa-backtrack"' --cfg 'feature="nfa-pikevm"' --cfg 'feature="nfa-thompson"' --cfg 'feature="perf"' --cfg 'feature="perf-inline"' --cfg 'feature="perf-literal"' --cfg 'feature="perf-literal-multisubstring"' --cfg 'feature="perf-literal-substring"' --cfg 'feature="std"' --cfg 'feature="syntax"' --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"' --cfg 'feature="unicode-word-boundary"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("alloc", "default", "dfa", "dfa-build", "dfa-onepass", "dfa-search", "hybrid", "internal-instrument", "internal-instrument-pikevm", "logging", "meta", "nfa", "nfa-backtrack", "nfa-pikevm", "nfa-thompson", "perf", "perf-inline", "perf-literal", "perf-literal-multisubstring", "perf-literal-substring", "std", "syntax", "unicode", "unicode-age", "unicode-bool", "unicode-case", "unicode-gencat", "unicode-perl", "unicode-script", "unicode-segment", "unicode-word-boundary"))' -C metadata=e0f44f132624d073 -C extra-filename=-08ed64ff5d7473da --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern aho_corasick=/opt/rustwide/target/debug/deps/libaho_corasick-81410deddce382ce.rmeta --extern memchr=/opt/rustwide/target/debug/deps/libmemchr-19f85ccd2b063f07.rmeta --extern regex_syntax=/opt/rustwide/target/debug/deps/libregex_syntax-60f0730b2f1d2344.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" "76609b7195e4db6645f8cd35d7273625ea7578ec0a8029714d3ecfbe6f3d4af6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76609b7195e4db6645f8cd35d7273625ea7578ec0a8029714d3ecfbe6f3d4af6", kill_on_drop: false }`
[INFO] [stdout] 76609b7195e4db6645f8cd35d7273625ea7578ec0a8029714d3ecfbe6f3d4af6