[INFO] fetching crate darn_cli 0.4.0...
[INFO] documenting darn_cli-0.4.0 against beta-2026-04-21 for beta-1.96-rustdoc-1
[INFO] extracting crate darn_cli 0.4.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate darn_cli 0.4.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate darn_cli 0.4.0
[INFO] tweaked toml for crates.io crate darn_cli 0.4.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate darn_cli 0.4.0 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 darn_cli 0.4.0 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] 01531cac9ce1e99021ad7c018b410a06fd440fcf8895adc18d8eac3ab1f7d752
[INFO] running `Command { std: "docker" "start" "-a" "01531cac9ce1e99021ad7c018b410a06fd440fcf8895adc18d8eac3ab1f7d752", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "01531cac9ce1e99021ad7c018b410a06fd440fcf8895adc18d8eac3ab1f7d752", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01531cac9ce1e99021ad7c018b410a06fd440fcf8895adc18d8eac3ab1f7d752", kill_on_drop: false }`
[INFO] [stdout] 01531cac9ce1e99021ad7c018b410a06fd440fcf8895adc18d8eac3ab1f7d752
[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" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e3d481fc9bb234fe6159cc907b829a98510a08e29f8762a7ba7034baf71e117f
[INFO] running `Command { std: "docker" "start" "-a" "e3d481fc9bb234fe6159cc907b829a98510a08e29f8762a7ba7034baf71e117f", kill_on_drop: false }`
[INFO] [stderr]     Checking critical-section v1.2.0
[INFO] [stderr]    Compiling typenum v1.19.0
[INFO] [stderr]    Compiling libc v0.2.182
[INFO] [stderr]     Checking subtle v2.6.1
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]     Checking parking_lot_core v0.9.12
[INFO] [stderr]     Checking mio v1.1.1
[INFO] [stderr]     Checking socket2 v0.6.2
[INFO] [stderr]     Checking errno v0.3.14
[INFO] [stderr]     Checking getrandom v0.3.4
[INFO] [stderr]    Compiling aws-lc-rs v1.16.1
[INFO] [stderr]    Compiling rustls v0.23.37
[INFO] [stderr]     Checking indexmap v2.13.0
[INFO] [stderr]     Checking pem-rfc7468 v1.0.0
[INFO] [stderr]     Checking event-listener v5.4.1
[INFO] [stderr]     Checking getrandom v0.4.2
[INFO] [stderr]    Compiling vergen-lib v9.1.0
[INFO] [stderr]     Checking signal-hook-registry v1.4.8
[INFO] [stderr]     Checking cordyceps v0.3.4
[INFO] [stderr]     Checking once_cell v1.21.3
[INFO] [stderr]     Checking rand_core v0.9.5
[INFO] [stderr]     Checking diatomic-waker v0.2.3
[INFO] [stderr]     Checking spin v0.10.0
[INFO] [stderr]    Compiling toml_parser v1.0.9+spec-1.1.0
[INFO] [stderr]     Checking futures-lite v2.6.1
[INFO] [stderr]    Compiling vergen v9.1.0
[INFO] [stderr]    Compiling vergen-lib v0.1.6
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stderr]     Checking tracing-core v0.1.36
[INFO] [stderr]     Checking event-listener-strategy v0.5.4
[INFO] [stderr]    Compiling heapless v0.7.17
[INFO] [stderr]    Compiling curve25519-dalek v4.1.3
[INFO] [stderr]     Checking parking_lot v0.12.5
[INFO] [stderr]     Checking futures-buffered v0.2.13
[INFO] [stderr]    Compiling curve25519-dalek v5.0.0-pre.1
[INFO] [stderr]    Compiling iroh-quinn-udp v0.8.0
[INFO] [stderr]    Compiling n0-future v0.3.2
[INFO] [stderr]     Checking regex-automata v0.4.14
[INFO] [stderr]     Checking hash32 v0.2.1
[INFO] [stderr]    Compiling deranged v0.5.8
[INFO] [stderr]     Checking rand v0.9.2
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]    Compiling toml_edit v0.23.10+spec-1.0.0
[INFO] [stderr]    Compiling vergen-gitcl v1.0.8
[INFO] [stderr]     Checking signature v3.0.0-rc.10
[INFO] [stderr]     Checking signature v2.2.0
[INFO] [stderr]    Compiling num_threads v0.1.7
[INFO] [stderr]     Checking async-lock v3.4.2
[INFO] [stderr]     Checking nonempty v0.12.0
[INFO] [stderr]     Checking netlink-packet-route v0.29.0
[INFO] [stderr]     Checking uuid v1.21.0
[INFO] [stderr]    Compiling pkarr v5.0.3
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]    Compiling netwatch v0.14.0
[INFO] [stderr]    Compiling iroh-quinn v0.16.1
[INFO] [stderr]    Compiling jobserver v0.1.34
[INFO] [stderr]     Checking base32 v0.5.1
[INFO] [stderr]     Checking mac-addr v0.3.0
[INFO] [stderr]     Checking identity-hash v0.1.0
[INFO] [stderr]     Checking sorted-index-buffer v0.2.1
[INFO] [stderr]     Checking time v0.3.47
[INFO] [stderr]     Checking moka v0.12.14
[INFO] [stderr]    Compiling cc v1.2.56
[INFO] [stderr]     Checking async-channel v2.5.0
[INFO] [stderr]     Checking netlink-packet-route v0.28.0
[INFO] [stderr]     Checking lru v0.16.3
[INFO] [stderr]    Compiling proc-macro-crate v3.4.0
[INFO] [stderr]     Checking simple-dns v0.9.3
[INFO] [stderr]     Checking fastbloom v0.14.1
[INFO] [stderr]     Checking simdutf8 v0.1.5
[INFO] [stderr]     Checking generic-array v0.14.7
[INFO] [stderr]     Checking hybrid-array v0.4.7
[INFO] [stderr]     Checking tracing-log v0.2.0
[INFO] [stderr]     Checking serde_bytes v0.11.19
[INFO] [stderr]     Checking seize v0.5.1
[INFO] [stderr]    Compiling iroh v0.96.1
[INFO] [stderr]     Checking z32 v1.3.0
[INFO] [stderr]    Compiling object v0.37.3
[INFO] [stderr]    Compiling owo-colors v4.3.0
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking crypto-common v0.1.7
[INFO] [stderr]     Checking inotify v0.11.0
[INFO] [stderr]    Compiling cmake v0.1.57
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking papaya v0.2.3
[INFO] [stderr]     Checking notify-types v2.1.0
[INFO] [stderr]    Compiling color-spantrace v0.3.0
[INFO] [stderr]     Checking gimli v0.32.3
[INFO] [stderr]     Checking sha2 v0.10.9
[INFO] [stderr]     Checking block-buffer v0.11.0
[INFO] [stderr]     Checking crypto-common v0.2.1
[INFO] [stderr]     Checking sha1 v0.10.6
[INFO] [stderr]     Checking leb128 v0.2.5
[INFO] [stderr]    Compiling eyre v0.6.12
[INFO] [stderr]     Checking notify v8.2.0
[INFO] [stderr]     Checking dirs-sys v0.5.0
[INFO] [stderr]     Checking tempfile v3.26.0
[INFO] [stderr]     Checking console v0.16.2
[INFO] [stderr]     Checking crossbeam-deque v0.8.6
[INFO] [stderr]     Checking smol_str v0.3.6
[INFO] [stderr]     Checking indenter v0.3.4
[INFO] [stderr]     Checking smawk v0.3.2
[INFO] [stderr]     Checking rustc-demangle v0.1.27
[INFO] [stderr]     Checking indicatif v0.18.4
[INFO] [stderr]     Checking digest v0.11.0-rc.10
[INFO] [stderr]     Checking textwrap v0.16.2
[INFO] [stderr]     Checking notify-debouncer-mini v0.7.0
[INFO] [stderr]    Compiling aws-lc-sys v0.38.0
[INFO] [stderr]    Compiling ring v0.17.14
[INFO] [stderr]    Compiling blake3 v1.8.3
[INFO] [stderr]    Compiling openssl-sys v0.9.111
[INFO] [stderr]     Checking sha2 v0.11.0-rc.2
[INFO] [stderr]     Checking dirs v6.0.0
[INFO] [stderr]     Checking serde_json v1.0.149
[INFO] [stderr]     Checking bs58 v0.5.1
[INFO] [stderr]    Compiling openssl v0.10.75
[INFO] [stderr]    Compiling native-tls v0.2.18
[INFO] [stderr]     Checking matchers v0.2.0
[INFO] [stderr]     Checking globset v0.4.18
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling darling_core v0.20.11
[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-2026-04-21-x86_64-unknown-linux-gnu/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-2.0.117/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=f50fd23ee619c33a -C extra-filename=-db35dfc171bce774 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-0fa97b1aa44f5fda.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-544fd508281ca8af.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-423507c85e36a25a.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" "e3d481fc9bb234fe6159cc907b829a98510a08e29f8762a7ba7034baf71e117f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3d481fc9bb234fe6159cc907b829a98510a08e29f8762a7ba7034baf71e117f", kill_on_drop: false }`
[INFO] [stdout] e3d481fc9bb234fe6159cc907b829a98510a08e29f8762a7ba7034baf71e117f