[INFO] fetching crate windchime 0.0.7...
[INFO] documenting windchime-0.0.7 against beta-2026-04-21 for beta-1.96-rustdoc-1
[INFO] extracting crate windchime 0.0.7 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate windchime 0.0.7
[INFO] finished tweaking crates.io crate windchime 0.0.7
[INFO] tweaked toml for crates.io crate windchime 0.0.7 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate windchime 0.0.7 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 windchime 0.0.7 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] e7845cf0892351346f99b7aabb2604e267cb32a32f4a20becd14249a4d9a8ebe
[INFO] running `Command { std: "docker" "start" "-a" "e7845cf0892351346f99b7aabb2604e267cb32a32f4a20becd14249a4d9a8ebe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e7845cf0892351346f99b7aabb2604e267cb32a32f4a20becd14249a4d9a8ebe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7845cf0892351346f99b7aabb2604e267cb32a32f4a20becd14249a4d9a8ebe", kill_on_drop: false }`
[INFO] [stdout] e7845cf0892351346f99b7aabb2604e267cb32a32f4a20becd14249a4d9a8ebe
[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" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1ac2405890a0f441b3a67f5395deeada3b044d260417632dc68760f7f515691c
[INFO] running `Command { std: "docker" "start" "-a" "1ac2405890a0f441b3a67f5395deeada3b044d260417632dc68760f7f515691c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling unicode-ident v1.0.16
[INFO] [stderr]    Compiling serde v1.0.217
[INFO] [stderr]    Compiling libm v0.2.11
[INFO] [stderr]     Checking bytes v1.9.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking hashbrown v0.15.2
[INFO] [stderr]    Compiling cc v1.2.11
[INFO] [stderr]    Compiling pkg-config v0.3.31
[INFO] [stderr]    Compiling thiserror v2.0.11
[INFO] [stderr]    Compiling crunchy v0.2.3
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]     Checking mio v1.0.3
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking tracing-core v0.1.33
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling matrixmultiply v0.3.9
[INFO] [stderr]     Checking ryu v1.0.19
[INFO] [stderr]    Compiling httparse v1.10.0
[INFO] [stderr]     Checking bytemuck v1.21.0
[INFO] [stderr]    Compiling openssl v0.10.69
[INFO] [stderr]     Checking tracing v0.1.41
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling native-tls v0.2.13
[INFO] [stderr]    Compiling rustversion v1.0.19
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]     Checking safe_arch v0.7.4
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]    Compiling getrandom v0.3.1
[INFO] [stderr]     Checking wide v0.7.32
[INFO] [stderr]    Compiling feature-probe v0.1.1
[INFO] [stderr]     Checking regex-syntax v0.8.5
[INFO] [stderr]    Compiling rustix v0.38.44
[INFO] [stderr]    Compiling syn v2.0.98
[INFO] [stderr]     Checking anstyle-parse v0.2.6
[INFO] [stderr]    Compiling bv v0.11.1
[INFO] [stderr]     Checking tokio v1.43.0
[INFO] [stderr]     Checking http v1.2.0
[INFO] [stderr]    Compiling newtype_derive v0.1.6
[INFO] [stderr]     Checking encoding_rs v0.8.35
[INFO] [stderr]     Checking unicode-width v0.2.0
[INFO] [stderr]     Checking indexmap v2.7.1
[INFO] [stderr]     Checking linux-raw-sys v0.4.15
[INFO] [stderr]     Checking either v1.13.0
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]    Compiling const-random-macro v0.1.16
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking approx v0.5.1
[INFO] [stderr]     Checking colorchoice v1.0.3
[INFO] [stderr]     Checking const-random v0.1.18
[INFO] [stderr]     Checking num-rational v0.4.2
[INFO] [stderr]     Checking dlv-list v0.5.2
[INFO] [stderr]     Checking anstyle-query v1.1.2
[INFO] [stderr]    Compiling serde_json v1.0.138
[INFO] [stderr]    Compiling portable-atomic v1.10.0
[INFO] [stderr]     Checking anstyle v1.0.10
[INFO] [stderr]     Checking winnow v0.7.10
[INFO] [stderr]    Compiling anyhow v1.0.95
[INFO] [stderr]     Checking console v0.15.10
[INFO] [stderr]     Checking anstream v0.6.18
[INFO] [stderr]     Checking ordered-multimap v0.7.3
[INFO] [stderr]     Checking hashlink v0.10.0
[INFO] [stderr]     Checking http-body v1.0.1
[INFO] [stderr]     Checking csv-core v0.1.11
[INFO] [stderr]     Checking clap_lex v0.7.4
[INFO] [stderr]     Checking simba v0.6.0
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stderr]     Checking trim-in-place v0.1.7
[INFO] [stderr]     Checking rustls-pki-types v1.11.0
[INFO] [stderr]     Checking bit-vec v0.8.0
[INFO] [stderr]     Checking arraydeque v0.5.1
[INFO] [stderr]     Checking rust-ini v0.21.1
[INFO] [stderr]     Checking convert_case v0.6.0
[INFO] [stderr]     Checking clap_builder v4.5.27
[INFO] [stderr]     Checking petgraph v0.6.5
[INFO] [stderr]     Checking yaml-rust2 v0.10.2
[INFO] [stderr]     Checking bit-set v0.8.0
[INFO] [stderr]    Compiling openssl-sys v0.9.104
[INFO] [stderr]     Checking ndarray v0.15.6
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking rustls-pemfile v2.2.0
[INFO] [stderr]     Checking ordered-float v4.6.0
[INFO] [stderr]     Checking itertools-num v0.1.3
[INFO] [stderr]     Checking custom_derive v0.1.7
[INFO] [stderr]     Checking strum v0.24.1
[INFO] [stderr]     Checking bytecount v0.6.8
[INFO] [stderr]     Checking editdistancek v1.0.2
[INFO] [stderr]     Checking shell-words v1.1.0
[INFO] [stderr]     Checking number_prefix v0.4.0
[INFO] [stderr]     Checking triple_accel v0.4.0
[INFO] [stderr]     Checking iana-time-zone v0.1.61
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]     Checking indicatif v0.17.11
[INFO] [stderr]     Checking chrono v0.4.39
[INFO] [stderr]     Checking colored v3.0.0
[INFO] [stderr] error: could not compile `futures-util` (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 futures_util --edition=2018 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/futures-util-0.3.31/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --warn=unreachable_pub --warn=unexpected_cfgs --warn=single_use_lifetimes --warn=rust_2018_idioms --warn=missing_debug_implementations --check-cfg 'cfg(futures_sanitizer)' --cfg 'feature="alloc"' --cfg 'feature="futures-io"' --cfg 'feature="futures-sink"' --cfg 'feature="io"' --cfg 'feature="memchr"' --cfg 'feature="sink"' --cfg 'feature="slab"' --cfg 'feature="std"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("alloc", "async-await", "async-await-macro", "bilock", "cfg-target-has-atomic", "channel", "compat", "default", "futures-channel", "futures-io", "futures-macro", "futures-sink", "futures_01", "io", "io-compat", "memchr", "portable-atomic", "sink", "slab", "std", "tokio-io", "unstable", "write-all-vectored"))' -C metadata=4a79210f7d7a02dd -C extra-filename=-9541a49c2076395e --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern futures_core=/opt/rustwide/target/debug/deps/libfutures_core-6568d90dd64e7b48.rmeta --extern futures_io=/opt/rustwide/target/debug/deps/libfutures_io-0b8a375f4cda44d9.rmeta --extern futures_sink=/opt/rustwide/target/debug/deps/libfutures_sink-6237f2be65eba4d8.rmeta --extern futures_task=/opt/rustwide/target/debug/deps/libfutures_task-ce05f48548ef3ec4.rmeta --extern memchr=/opt/rustwide/target/debug/deps/libmemchr-cf8750e45d2ee395.rmeta --extern pin_project_lite=/opt/rustwide/target/debug/deps/libpin_project_lite-6c0c561d52788790.rmeta --extern pin_utils=/opt/rustwide/target/debug/deps/libpin_utils-074b6555a9f51534.rmeta --extern slab=/opt/rustwide/target/debug/deps/libslab-18c60167d7fddef1.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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-2.0.98/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=220f9e7f30529554 -C extra-filename=-0481175dc83813ec --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-634e0439bf5adfe1.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-376f628d8d546e15.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-cf571e428a2ad4d6.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "1ac2405890a0f441b3a67f5395deeada3b044d260417632dc68760f7f515691c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ac2405890a0f441b3a67f5395deeada3b044d260417632dc68760f7f515691c", kill_on_drop: false }`
[INFO] [stdout] 1ac2405890a0f441b3a67f5395deeada3b044d260417632dc68760f7f515691c