[INFO] fetching crate ghtool 0.10.6...
[INFO] documenting ghtool-0.10.6 against beta-2026-04-21 for beta-1.96-rustdoc-1
[INFO] extracting crate ghtool 0.10.6 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate ghtool 0.10.6
[INFO] finished tweaking crates.io crate ghtool 0.10.6
[INFO] tweaked toml for crates.io crate ghtool 0.10.6 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ghtool 0.10.6 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 ghtool 0.10.6 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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 68bfc984a2d1959c547892e86469ae5ce6b242bcb0b814460a61c943de23f851
[INFO] running `Command { std: "docker" "start" "-a" "68bfc984a2d1959c547892e86469ae5ce6b242bcb0b814460a61c943de23f851", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "68bfc984a2d1959c547892e86469ae5ce6b242bcb0b814460a61c943de23f851", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68bfc984a2d1959c547892e86469ae5ce6b242bcb0b814460a61c943de23f851", kill_on_drop: false }`
[INFO] [stdout] 68bfc984a2d1959c547892e86469ae5ce6b242bcb0b814460a61c943de23f851
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 7d5c9c38c422a270781e9f9cf534638c1d230abcd13f38c2312c7afe1270cc42
[INFO] running `Command { std: "docker" "start" "-a" "7d5c9c38c422a270781e9f9cf534638c1d230abcd13f38c2312c7afe1270cc42", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.67
[INFO] [stderr]    Compiling libc v0.2.148
[INFO] [stderr]     Checking pin-project-lite v0.2.13
[INFO] [stderr]     Checking memchr v2.6.3
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking futures-io v0.3.28
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]     Checking tracing-core v0.1.31
[INFO] [stderr]    Compiling serde v1.0.188
[INFO] [stderr]    Compiling once_cell v1.18.0
[INFO] [stderr]    Compiling hashbrown v0.14.0
[INFO] [stderr]     Checking bytes v1.5.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]    Compiling proc-macro2-diagnostics v0.10.1
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling bytecheck v0.6.11
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]    Compiling beef v0.5.2
[INFO] [stderr]    Compiling winnow v0.5.15
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]    Compiling simdutf8 v0.1.4
[INFO] [stderr]    Compiling toml_datetime v0.6.3
[INFO] [stderr]    Compiling rend v0.4.0
[INFO] [stderr]    Compiling thiserror v1.0.48
[INFO] [stderr]    Compiling either v1.9.0
[INFO] [stderr]    Compiling indexmap v2.0.0
[INFO] [stderr]     Checking concurrent-queue v2.2.0
[INFO] [stderr]    Compiling openssl v0.10.57
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking parking v2.1.0
[INFO] [stderr]    Compiling rkyv v0.7.42
[INFO] [stderr]     Checking async-lock v2.8.0
[INFO] [stderr]    Compiling itertools v0.12.1
[INFO] [stderr]     Checking futures-lite v1.13.0
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]    Compiling aliasable v0.1.3
[INFO] [stderr]    Compiling lalrpop-util v0.20.2
[INFO] [stderr]    Compiling seahash v4.1.0
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]     Checking http v1.1.0
[INFO] [stderr]     Checking bitflags v2.4.0
[INFO] [stderr]     Checking want v0.3.1
[INFO] [stderr]     Checking aho-corasick v1.1.0
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]    Compiling polling v2.8.0
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]     Checking mio v0.8.8
[INFO] [stderr]     Checking socket2 v0.5.4
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]    Compiling syn v2.0.37
[INFO] [stderr]    Compiling jobserver v0.1.26
[INFO] [stderr]    Compiling getrandom v0.2.10
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]     Checking num-integer v0.1.45
[INFO] [stderr]    Compiling regex-syntax v0.7.5
[INFO] [stderr]     Checking percent-encoding v2.3.0
[INFO] [stderr]    Compiling rustix v0.37.23
[INFO] [stderr]     Checking async-task v4.4.0
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]     Checking tower-layer v0.3.2
[INFO] [stderr]     Checking cpufeatures v0.2.9
[INFO] [stderr]     Checking http-body v1.0.0
[INFO] [stderr]     Checking form_urlencoded v1.2.0
[INFO] [stderr]    Compiling counter v0.5.7
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]     Checking async-channel v1.9.0
[INFO] [stderr]    Compiling async-fs v1.6.0
[INFO] [stderr]    Compiling async-io v1.13.0
[INFO] [stderr]    Compiling async-trait v0.1.73
[INFO] [stderr]    Compiling toml_edit v0.19.15
[INFO] [stderr]     Checking overload v0.1.1
[INFO] [stderr]     Checking unicode-bidi v0.3.13
[INFO] [stderr]    Compiling serde_json v1.0.107
[INFO] [stderr]     Checking atomic-waker v1.1.1
[INFO] [stderr]     Checking nu-ansi-term v0.46.0
[INFO] [stderr]     Checking blocking v1.3.1
[INFO] [stderr]     Checking nix v0.26.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking idna v0.4.0
[INFO] [stderr]     Checking http-body-util v0.1.1
[INFO] [stderr]     Checking socket2 v0.4.9
[INFO] [stderr]     Checking sharded-slab v0.1.4
[INFO] [stderr]     Checking cipher v0.3.0
[INFO] [stderr]     Checking thread_local v1.1.7
[INFO] [stderr]    Compiling openssl-sys v0.9.93
[INFO] [stderr]    Compiling zstd-sys v1.6.2+zstd.1.5.1
[INFO] [stderr]     Checking rustls-pki-types v1.7.0
[INFO] [stderr]    Compiling ref-cast v1.0.20
[INFO] [stderr]    Compiling zstd-safe v4.1.3+zstd.1.5.1
[INFO] [stderr]     Checking url v2.4.1
[INFO] [stderr]     Checking rustls-pemfile v2.1.2
[INFO] [stderr]    Compiling backtrace v0.3.69
[INFO] [stderr]     Checking xdg-home v1.0.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking num-iter v0.1.43
[INFO] [stderr]     Checking async-executor v1.5.1
[INFO] [stderr]     Checking sha1 v0.10.5
[INFO] [stderr]    Compiling native-tls v0.2.11
[INFO] [stderr]     Checking num-complex v0.4.4
[INFO] [stderr]     Checking hmac v0.12.1
[INFO] [stderr]     Checking async-broadcast v0.5.1
[INFO] [stderr]     Checking ordered-stream v0.2.0
[INFO] [stderr]     Checking encoding_rs v0.8.33
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]    Compiling eyre v0.6.8
[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-0.7.5/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="default"' --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=ab0eca542886b768 -C extra-filename=-10d642d56fa80bd4 --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] [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-2.0.37/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="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --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", "quote", "test", "visit", "visit-mut"))' -C metadata=98053a55ed7ba5e1 -C extra-filename=-101b9836ff546c9b --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-661a4b881b6df214.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-5ed888ae27e738a9.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-472188a549d5cedb.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "7d5c9c38c422a270781e9f9cf534638c1d230abcd13f38c2312c7afe1270cc42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d5c9c38c422a270781e9f9cf534638c1d230abcd13f38c2312c7afe1270cc42", kill_on_drop: false }`
[INFO] [stdout] 7d5c9c38c422a270781e9f9cf534638c1d230abcd13f38c2312c7afe1270cc42