[INFO] fetching crate theory_grabber 2.18.5...
[INFO] testing theory_grabber-2.18.5 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate theory_grabber 2.18.5 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate theory_grabber 2.18.5
[INFO] finished tweaking crates.io crate theory_grabber 2.18.5
[INFO] tweaked toml for crates.io crate theory_grabber 2.18.5 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate theory_grabber 2.18.5 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 theory_grabber 2.18.5 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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 50993ff62033ec57f6bf9acc90a984faec0f96498fd46d0f89b43a1442d413ff
[INFO] running `Command { std: "docker" "start" "-a" "50993ff62033ec57f6bf9acc90a984faec0f96498fd46d0f89b43a1442d413ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "50993ff62033ec57f6bf9acc90a984faec0f96498fd46d0f89b43a1442d413ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50993ff62033ec57f6bf9acc90a984faec0f96498fd46d0f89b43a1442d413ff", kill_on_drop: false }`
[INFO] [stdout] 50993ff62033ec57f6bf9acc90a984faec0f96498fd46d0f89b43a1442d413ff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 227fded741f032535723e499929c5a29d5cebcfc24c5b9725681739463ee943a
[INFO] running `Command { std: "docker" "start" "-a" "227fded741f032535723e499929c5a29d5cebcfc24c5b9725681739463ee943a", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.14
[INFO] [stderr]    Compiling libc v0.2.168
[INFO] [stderr]    Compiling log v0.4.25
[INFO] [stderr]    Compiling serde v1.0.217
[INFO] [stderr]    Compiling bytes v1.9.0
[INFO] [stderr]    Compiling phf_shared v0.10.0
[INFO] [stderr]    Compiling itoa v1.0.14
[INFO] [stderr]    Compiling foldhash v0.1.3
[INFO] [stderr]    Compiling cc v1.2.3
[INFO] [stderr]    Compiling pkg-config v0.3.31
[INFO] [stderr]    Compiling litemap v0.7.4
[INFO] [stderr]    Compiling writeable v0.5.5
[INFO] [stderr]    Compiling bitflags v2.6.0
[INFO] [stderr]    Compiling mac v0.1.1
[INFO] [stderr]    Compiling icu_locid_transform_data v1.5.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling hashbrown v0.15.2
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling futf v0.1.5
[INFO] [stderr]    Compiling tracing-core v0.1.33
[INFO] [stderr]    Compiling phf_shared v0.11.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.20
[INFO] [stderr]    Compiling utf-8 v0.7.6
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling openssl v0.10.68
[INFO] [stderr]    Compiling icu_properties_data v1.5.0
[INFO] [stderr]    Compiling phf v0.10.1
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling http v1.2.0
[INFO] [stderr]    Compiling rustix v0.38.42
[INFO] [stderr]    Compiling icu_normalizer_data v1.5.0
[INFO] [stderr]    Compiling tendril v0.4.3
[INFO] [stderr]    Compiling either v1.13.0
[INFO] [stderr]    Compiling signal-hook v0.3.17
[INFO] [stderr]    Compiling write16 v1.0.0
[INFO] [stderr]    Compiling native-tls v0.2.12
[INFO] [stderr]    Compiling utf16_iter v1.0.5
[INFO] [stderr]    Compiling syn v2.0.96
[INFO] [stderr]    Compiling indexmap v2.7.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling mio v1.0.3
[INFO] [stderr]    Compiling socket2 v0.5.8
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling signal-hook-registry v1.4.2
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling parking_lot v0.12.3
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling anstyle-parse v0.2.6
[INFO] [stderr]    Compiling tokio v1.42.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling http-body v1.0.1
[INFO] [stderr]    Compiling diff v0.1.13
[INFO] [stderr]    Compiling unicode-width v0.2.0
[INFO] [stderr]    Compiling anstyle-query v1.1.2
[INFO] [stderr]    Compiling yansi v1.0.1
[INFO] [stderr]    Compiling openssl-sys v0.9.104
[INFO] [stderr]    Compiling serde_json v1.0.133
[INFO] [stderr]    Compiling portable-atomic v1.10.0
[INFO] [stderr]    Compiling colorchoice v1.0.3
[INFO] [stderr]    Compiling anstream v0.6.18
[INFO] [stderr]    Compiling signal-hook-mio v0.2.4
[INFO] [stderr]    Compiling crossbeam-deque v0.8.5
[INFO] [stderr]    Compiling is-terminal v0.4.13
[INFO] [stderr]    Compiling itertools v0.13.0
[INFO] [stderr]    Compiling castaway v0.2.3
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling iana-time-zone v0.1.61
[INFO] [stderr]    Compiling pretty_assertions v1.4.1
[INFO] [stderr]    Compiling winnow v0.6.20
[INFO] [stderr]    Compiling anyhow v1.0.95
[INFO] [stderr]    Compiling indoc v2.0.5
[INFO] [stderr]    Compiling clap_builder v4.5.27
[INFO] [stderr]    Compiling bit-set v0.5.3
[INFO] [stderr]    Compiling dirs-sys v0.5.0
[INFO] [stderr]    Compiling phf v0.11.2
[INFO] [stderr]    Compiling compact_str v0.8.0
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]    Compiling http-body-util v0.1.2
[INFO] [stderr]    Compiling console v0.15.10
[INFO] [stderr]    Compiling regex v1.11.1
[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-2.0.96/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"' --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=8f535336274a4290 -C extra-filename=-83922a787dbb133c --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-5bcccf0dad1cb673.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-27dc9ea7c1e6da2e.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-479310822a796184.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" "227fded741f032535723e499929c5a29d5cebcfc24c5b9725681739463ee943a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "227fded741f032535723e499929c5a29d5cebcfc24c5b9725681739463ee943a", kill_on_drop: false }`
[INFO] [stdout] 227fded741f032535723e499929c5a29d5cebcfc24c5b9725681739463ee943a
