[INFO] fetching crate ctxforge 2.1.0...
[INFO] testing ctxforge-2.1.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate ctxforge 2.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate ctxforge 2.1.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate ctxforge 2.1.0
[INFO] tweaked toml for crates.io crate ctxforge 2.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ctxforge 2.1.0 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 ctxforge 2.1.0 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] bbbdac1707ff2a1c5cf8a124218fbe109d804cce731c0ef3de447c805de1174d
[INFO] running `Command { std: "docker" "start" "-a" "bbbdac1707ff2a1c5cf8a124218fbe109d804cce731c0ef3de447c805de1174d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bbbdac1707ff2a1c5cf8a124218fbe109d804cce731c0ef3de447c805de1174d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbbdac1707ff2a1c5cf8a124218fbe109d804cce731c0ef3de447c805de1174d", kill_on_drop: false }`
[INFO] [stdout] bbbdac1707ff2a1c5cf8a124218fbe109d804cce731c0ef3de447c805de1174d
[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" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a7034d8ca59974175304cdc9733c3117591ddfa1974b9573910331ef722b7695
[INFO] running `Command { std: "docker" "start" "-a" "a7034d8ca59974175304cdc9733c3117591ddfa1974b9573910331ef722b7695", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling unicode-ident v1.0.24
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling libc v0.2.184
[INFO] [stderr]    Compiling bitflags v2.11.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling memchr v2.8.0
[INFO] [stderr]    Compiling futures-core v0.3.32
[INFO] [stderr]    Compiling pin-project-lite v0.2.17
[INFO] [stderr]    Compiling rustix v1.1.4
[INFO] [stderr]    Compiling find-msvc-tools v0.1.9
[INFO] [stderr]    Compiling linux-raw-sys v0.12.1
[INFO] [stderr]    Compiling shlex v1.3.0
[INFO] [stderr]    Compiling futures-io v0.3.32
[INFO] [stderr]    Compiling stable_deref_trait v1.2.1
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling fastrand v2.4.1
[INFO] [stderr]    Compiling log v0.4.29
[INFO] [stderr]    Compiling slab v0.4.12
[INFO] [stderr]    Compiling regex-syntax v0.8.10
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling litemap v0.8.2
[INFO] [stderr]    Compiling writeable v0.6.3
[INFO] [stderr]    Compiling itoa v1.0.18
[INFO] [stderr]    Compiling futures-lite v2.6.1
[INFO] [stderr]    Compiling typenum v1.19.0
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling getrandom v0.4.2
[INFO] [stderr]    Compiling simd-adler32 v0.3.9
[INFO] [stderr]    Compiling icu_properties_data v2.1.2
[INFO] [stderr]    Compiling pkg-config v0.3.32
[INFO] [stderr]    Compiling aho-corasick v1.1.4
[INFO] [stderr]    Compiling once_cell v1.21.4
[INFO] [stderr]    Compiling async-io v2.6.0
[INFO] [stderr]    Compiling unicode-segmentation v1.13.2
[INFO] [stderr]    Compiling vcpkg v0.2.15
[INFO] [stderr]    Compiling hashbrown v0.17.0
[INFO] [stderr]    Compiling signal-hook v0.3.18
[INFO] [stderr]    Compiling zeroize v1.8.2
[INFO] [stderr]    Compiling concurrent-queue v2.5.0
[INFO] [stderr]    Compiling miniz_oxide v0.8.9
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling event-listener v5.4.1
[INFO] [stderr]    Compiling convert_case v0.10.0
[INFO] [stderr]    Compiling percent-encoding v2.3.2
[INFO] [stderr]    Compiling subtle v2.6.1
[INFO] [stderr]    Compiling event-listener-strategy v0.5.4
[INFO] [stderr]    Compiling futures-sink v0.3.32
[INFO] [stderr]    Compiling indexmap v2.14.0
[INFO] [stderr]    Compiling futures-channel v0.3.32
[INFO] [stderr]    Compiling piper v0.2.5
[INFO] [stderr]    Compiling async-channel v2.5.0
[INFO] [stderr]    Compiling flate2 v1.1.9
[INFO] [stderr]    Compiling rustls-pki-types v1.14.0
[INFO] [stderr]    Compiling slotmap v1.1.1
[INFO] [stderr]    Compiling unicode-width v0.2.2
[INFO] [stderr]    Compiling untrusted v0.9.0
[INFO] [stderr]    Compiling zmij v1.0.21
[INFO] [stderr]    Compiling httparse v1.10.1
[INFO] [stderr]    Compiling futures-task v0.3.32
[INFO] [stderr]    Compiling litrs v1.0.0
[INFO] [stderr]    Compiling blocking v1.6.2
[INFO] [stderr]    Compiling jobserver v0.1.34
[INFO] [stderr]    Compiling errno v0.3.14
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling signal-hook-registry v1.4.8
[INFO] [stderr]    Compiling getrandom v0.2.17
[INFO] [stderr]    Compiling mio v1.2.0
[INFO] [stderr]    Compiling anstyle-parse v1.0.0
[INFO] [stderr]    Compiling cc v1.2.59
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling document-features v0.2.12
[INFO] [stderr]    Compiling block-buffer v0.10.4
[INFO] [stderr]    Compiling crypto-common v0.1.7
[INFO] [stderr]    Compiling deranged v0.5.8
[INFO] [stderr]    Compiling async-lock v3.4.2
[INFO] [stderr]    Compiling fdeflate v0.3.7
[INFO] [stderr]    Compiling rustls v0.23.38
[INFO] [stderr]    Compiling anstyle-query v1.1.5
[INFO] [stderr]    Compiling portable-atomic v1.13.1
[INFO] [stderr]    Compiling anyhow v1.0.102
[INFO] [stderr]    Compiling thiserror v2.0.18
[INFO] [stderr]    Compiling regex-automata v0.4.14
[INFO] [stderr]    Compiling signal-hook-mio v0.2.5
[INFO] [stderr]    Compiling anstyle v1.0.14
[INFO] [stderr]    Compiling pxfm v0.1.28
[INFO] [stderr]    Compiling is_terminal_polyfill v1.70.2
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling bytes v1.11.1
[INFO] [stderr]    Compiling colorchoice v1.0.5
[INFO] [stderr]    Compiling time-core v0.1.7
[INFO] [stderr]    Compiling anstream v1.0.0
[INFO] [stderr]    Compiling png v0.18.1
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling uuid v1.23.0
[INFO] [stderr]    Compiling console v0.15.11
[INFO] [stderr]    Compiling form_urlencoded v1.2.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling quick-xml v0.38.4
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]    Compiling x11rb-protocol v0.13.2
[INFO] [stderr]    Compiling http v1.4.0
[INFO] [stderr]    Compiling winnow v0.7.15
[INFO] [stderr]    Compiling owo-colors v4.3.0
[INFO] [stderr]    Compiling clap_lex v1.1.0
[INFO] [stderr]    Compiling time v0.3.45
[INFO] [stderr]    Compiling bytemuck v1.25.0
[INFO] [stderr]    Compiling clap_builder v4.6.0
[INFO] [stderr]    Compiling taffy v0.5.2
[INFO] [stderr]    Compiling crossbeam-deque v0.8.6
[INFO] [stderr]    Compiling async-fs v2.2.0
[INFO] [stderr]    Compiling ring v0.17.14
[INFO] [stderr]    Compiling libz-sys v1.1.28
[INFO] [stderr]    Compiling libgit2-sys v0.18.3+1.9.2
[INFO] [stderr]    Compiling ureq-proto v0.6.0
[INFO] [stderr]    Compiling generational-box v0.5.6
[INFO] [stderr]    Compiling webpki-roots v1.0.7
[INFO] [stderr]    Compiling async-executor v1.14.0
[INFO] [stderr]    Compiling thread_local v1.1.9
[INFO] [stderr]    Compiling cpufeatures v0.2.17
[INFO] [stderr]    Compiling utf8-zero v0.8.1
[INFO] [stderr]    Compiling iana-time-zone v0.1.65
[INFO] [stderr]    Compiling shell-words v1.1.1
[INFO] [stderr]    Compiling unicode-width v0.1.14
[INFO] [stderr]    Compiling number_prefix v0.4.0
[INFO] [stderr]    Compiling ryu v1.0.23
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling indicatif v0.17.11
[INFO] [stderr]    Compiling fuzzy-matcher v0.3.7
[INFO] [stderr]    Compiling sha2 v0.10.9
[INFO] [stderr]    Compiling hmac v0.12.1
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling moxcms v0.7.11
[INFO] [stderr]    Compiling urlencoding v2.1.3
[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"' --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=d1d6ebf1be85d220 -C extra-filename=-123e1e3090887840 --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" "a7034d8ca59974175304cdc9733c3117591ddfa1974b9573910331ef722b7695", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7034d8ca59974175304cdc9733c3117591ddfa1974b9573910331ef722b7695", kill_on_drop: false }`
[INFO] [stdout] a7034d8ca59974175304cdc9733c3117591ddfa1974b9573910331ef722b7695
