[INFO] fetching crate koan-core 0.20.0...
[INFO] checking koan-core-0.20.0 against master#e1613686e0efc80a1a18b1263625450a8de3fb04 for pr-154492-1
[INFO] extracting crate koan-core 0.20.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate koan-core 0.20.0
[INFO] finished tweaking crates.io crate koan-core 0.20.0
[INFO] tweaked toml for crates.io crate koan-core 0.20.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate koan-core 0.20.0 on toolchain e1613686e0efc80a1a18b1263625450a8de3fb04
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e1613686e0efc80a1a18b1263625450a8de3fb04" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate koan-core 0.20.0 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" "+e1613686e0efc80a1a18b1263625450a8de3fb04" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded symphonia-codec-aac v0.5.5
[INFO] [stderr]   Downloaded symphonia-codec-alac v0.5.5
[INFO] [stderr]   Downloaded toml_writer v1.0.7+spec-1.1.0
[INFO] [stderr]   Downloaded adler32 v1.2.0
[INFO] [stderr]   Downloaded rcue v0.1.3
[INFO] [stderr]   Downloaded lofty_attr v0.12.0
[INFO] [stderr]   Downloaded ogg_pager v0.7.1
[INFO] [stderr]   Downloaded dbus-secret-service v4.1.0
[INFO] [stderr]   Downloaded symphonia-format-isomp4 v0.5.5
[INFO] [stderr]   Downloaded rtrb v0.3.3
[INFO] [stderr]   Downloaded symphonia-bundle-mp3 v0.5.5
[INFO] [stderr]   Downloaded peeking_take_while v0.1.2
[INFO] [stderr]   Downloaded hashlink v0.11.0
[INFO] [stderr]   Downloaded keyring v3.6.3
[INFO] [stderr]   Downloaded ebur128 v0.1.10
[INFO] [stderr]   Downloaded aws-lc-rs v1.16.1
[INFO] [stderr]   Downloaded bliss-audio v0.11.2
[INFO] [stderr]   Downloaded rusqlite v0.38.0
[INFO] [stderr]   Downloaded bindgen v0.64.0
[INFO] [stderr]   Downloaded lofty v0.23.3
[INFO] [stderr]   Downloaded extended-isolation-forest v0.2.3
[INFO] [stderr]   Downloaded bliss-audio-aubio-sys v0.2.4
[INFO] [stderr]   Downloaded aws-lc-sys v0.38.0
[INFO] [stderr]   Downloaded bliss-audio-aubio-rs v0.2.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "+e1613686e0efc80a1a18b1263625450a8de3fb04" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1b9b333f3eb67a76b5e76de5245f18a1724200202f982144d9304d5eb0d684d5
[INFO] running `Command { std: "docker" "start" "-a" "1b9b333f3eb67a76b5e76de5245f18a1724200202f982144d9304d5eb0d684d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1b9b333f3eb67a76b5e76de5245f18a1724200202f982144d9304d5eb0d684d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b9b333f3eb67a76b5e76de5245f18a1724200202f982144d9304d5eb0d684d5", kill_on_drop: false }`
[INFO] [stdout] 1b9b333f3eb67a76b5e76de5245f18a1724200202f982144d9304d5eb0d684d5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "+e1613686e0efc80a1a18b1263625450a8de3fb04" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 282de0e5efd4f4db2a6db0e5609c535efce2d01ed4613e9eee87cb9250f45a56
[INFO] running `Command { std: "docker" "start" "-a" "282de0e5efd4f4db2a6db0e5609c535efce2d01ed4613e9eee87cb9250f45a56", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.183
[INFO] [stderr]    Compiling libm v0.2.16
[INFO] [stderr]     Checking strength_reduce v0.2.4
[INFO] [stderr]     Checking log v0.4.29
[INFO] [stderr]     Checking bytemuck v1.25.0
[INFO] [stderr]     Checking arrayvec v0.7.6
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]     Checking smallvec v1.15.1
[INFO] [stderr]    Compiling dunce v1.0.5
[INFO] [stderr]    Compiling fs_extra v1.3.0
[INFO] [stderr]    Compiling glob v0.3.3
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling zeroize_derive v1.4.3
[INFO] [stderr]    Compiling aws-lc-rs v1.16.1
[INFO] [stderr]    Compiling rustix v0.38.44
[INFO] [stderr]    Compiling zerocopy v0.8.42
[INFO] [stderr]     Checking once_cell v1.21.4
[INFO] [stderr]     Checking foldhash v0.2.0
[INFO] [stderr]    Compiling linux-raw-sys v0.4.15
[INFO] [stderr]    Compiling bitflags v2.11.0
[INFO] [stderr]     Checking hashbrown v0.16.1
[INFO] [stderr]    Compiling regex-syntax v0.8.10
[INFO] [stderr]    Compiling memchr v2.8.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling libloading v0.8.9
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling bindgen v0.64.0
[INFO] [stderr]     Checking futures-io v0.3.32
[INFO] [stderr]    Compiling clang-sys v1.8.1
[INFO] [stderr]    Compiling rayon-core v1.13.0
[INFO] [stderr]    Compiling rustls v0.23.37
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]     Checking zeroize v1.8.2
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling lazy_static v1.5.0
[INFO] [stderr]     Checking indexmap v2.13.0
[INFO] [stderr]     Checking rustls-pki-types v1.14.0
[INFO] [stderr]     Checking futures-util v0.3.32
[INFO] [stderr]    Compiling proc-macro2-diagnostics v0.10.1
[INFO] [stderr]    Compiling matrixmultiply v0.3.10
[INFO] [stderr]     Checking icu_normalizer v2.1.1
[INFO] [stderr]     Checking tracing-core v0.1.36
[INFO] [stderr]    Compiling alsa-sys v0.3.1
[INFO] [stderr]    Compiling yansi v1.0.1
[INFO] [stderr]     Checking winnow v0.7.15
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]     Checking mio v1.1.1
[INFO] [stderr]     Checking socket2 v0.6.3
[INFO] [stderr]     Checking getrandom v0.2.17
[INFO] [stderr]    Compiling getrandom v0.4.2
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking tracing v0.1.44
[INFO] [stderr]     Checking tokio v1.50.0
[INFO] [stderr]    Compiling jobserver v0.1.34
[INFO] [stderr]     Checking rayon v1.11.0
[INFO] [stderr]     Checking idna_adapter v1.2.1
[INFO] [stderr]     Checking sync_wrapper v1.0.2
[INFO] [stderr]    Compiling uncased v0.9.10
[INFO] [stderr]    Compiling cc v1.2.57
[INFO] [stderr]     Checking extended v0.1.0
[INFO] [stderr]     Checking openssl-probe v0.2.1
[INFO] [stderr]     Checking simd-adler32 v0.3.8
[INFO] [stderr]     Checking ipnet v2.12.0
[INFO] [stderr]     Checking dasp_sample v0.11.0
[INFO] [stderr]     Checking miniz_oxide v0.8.9
[INFO] [stderr]     Checking rustls-native-certs v0.8.3
[INFO] [stderr]    Compiling regex-automata v0.4.14
[INFO] [stderr]     Checking idna v1.1.0
[INFO] [stderr]    Compiling which v4.4.2
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking primal-check v0.3.4
[INFO] [stderr]     Checking transpose v0.2.3
[INFO] [stderr]     Checking noisy_float v0.2.1
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]     Checking dbus v0.9.10
[INFO] [stderr]    Compiling cexpr v0.6.0
[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/e1613686e0efc80a1a18b1263625450a8de3fb04/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 --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=a5739fad64ae4317 -C extra-filename=-d2fb4bcc29cd1978 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "282de0e5efd4f4db2a6db0e5609c535efce2d01ed4613e9eee87cb9250f45a56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "282de0e5efd4f4db2a6db0e5609c535efce2d01ed4613e9eee87cb9250f45a56", kill_on_drop: false }`
[INFO] [stdout] 282de0e5efd4f4db2a6db0e5609c535efce2d01ed4613e9eee87cb9250f45a56