[INFO] fetching crate pax-engine 0.38.3...
[INFO] checking pax-engine-0.38.3 against try#c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f for 2025-12-16-next-solver-global
[INFO] extracting crate pax-engine 0.38.3 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate pax-engine 0.38.3
[INFO] finished tweaking crates.io crate pax-engine 0.38.3
[INFO] tweaked toml for crates.io crate pax-engine 0.38.3 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate pax-engine 0.38.3 on toolchain c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 330 packages to latest compatible versions
[INFO] [stderr]       Adding generic-array v0.14.7 (available: v0.14.9)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3f0c69827ed6b33a9faf0cb1f75ce50fe467da1bf12893a33f2c1bfd4f91ba40
[INFO] running `Command { std: "docker" "start" "-a" "3f0c69827ed6b33a9faf0cb1f75ce50fe467da1bf12893a33f2c1bfd4f91ba40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3f0c69827ed6b33a9faf0cb1f75ce50fe467da1bf12893a33f2c1bfd4f91ba40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f0c69827ed6b33a9faf0cb1f75ce50fe467da1bf12893a33f2c1bfd4f91ba40", kill_on_drop: false }`
[INFO] [stdout] 3f0c69827ed6b33a9faf0cb1f75ce50fe467da1bf12893a33f2c1bfd4f91ba40
[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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fe01438b2caf5aa95e513e6f322a4e013174007a6a3cb02d161fc2aa13e1aa49
[INFO] running `Command { std: "docker" "start" "-a" "fe01438b2caf5aa95e513e6f322a4e013174007a6a3cb02d161fc2aa13e1aa49", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.104
[INFO] [stderr]    Compiling version-compare v0.2.1
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling aho-corasick v1.1.4
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling pin-project-lite v0.2.16
[INFO] [stderr]    Compiling phf_shared v0.11.3
[INFO] [stderr]    Compiling gio v0.16.7
[INFO] [stderr]    Compiling ucd-trie v0.1.7
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling wasm-bindgen v0.2.106
[INFO] [stderr]    Compiling unic-char-range v0.9.0
[INFO] [stderr]    Compiling unic-common v0.9.0
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling futures-task v0.3.31
[INFO] [stderr]    Compiling slab v0.4.11
[INFO] [stderr]    Compiling unic-char-property v0.9.0
[INFO] [stderr]    Compiling unic-ucd-version v0.9.0
[INFO] [stderr]    Compiling zmij v1.0.3
[INFO] [stderr]    Compiling phf v0.11.3
[INFO] [stderr]    Compiling pest v2.8.4
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling tracing-core v0.1.36
[INFO] [stderr]    Compiling unic-ucd-bidi v0.9.0
[INFO] [stderr]    Compiling matches v0.1.10
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling kurbo v0.9.5
[INFO] [stderr]     Checking serde_json v1.0.148
[INFO] [stderr]    Compiling sharded-slab v0.1.7
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling thread_local v1.1.9
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling unic-bidi v0.9.0
[INFO] [stderr]    Compiling bstr v1.12.1
[INFO] [stderr]    Compiling adler2 v2.0.1
[INFO] [stderr]    Compiling tracing v0.1.44
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling gimli v0.32.3
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling quote v1.0.42
[INFO] [stderr]    Compiling futures-io v0.3.31
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling tracing-subscriber v0.3.22
[INFO] [stderr]    Compiling miniz_oxide v0.8.9
[INFO] [stderr]    Compiling syn v2.0.111
[INFO] [stderr]    Compiling crossbeam-deque v0.8.6
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking regex-automata v0.4.13
[INFO] [stderr]    Compiling piet v0.6.2
[INFO] [stderr]    Compiling include_dir_macros v0.7.4
[INFO] [stderr]    Compiling pest_meta v2.8.4
[INFO] [stderr]    Compiling owo-colors v4.2.3
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling phf_generator v0.11.3
[INFO] [stderr]    Compiling object v0.37.3
[INFO] [stderr]    Compiling rustc-demangle v0.1.26
[INFO] [stderr]    Compiling indenter v0.3.4
[INFO] [stderr]    Compiling phf_codegen v0.11.3
[INFO] [stderr]    Compiling tracing-error v0.2.1
[INFO] [stderr]    Compiling iana-time-zone v0.1.64
[INFO] [stderr]    Compiling eyre v0.6.12
[INFO] [stderr]    Compiling chrono v0.4.42
[INFO] [stderr]    Compiling color-spantrace v0.3.0
[INFO] [stderr]    Compiling slotmap v1.1.1
[INFO] [stderr]    Compiling libm v0.2.15
[INFO] [stderr]    Compiling sailfish-compiler v0.6.1
[INFO] [stderr]    Compiling bitflags v2.10.0
[INFO] [stderr]    Compiling deunicode v1.6.2
[INFO] [stderr]     Checking backtrace v0.3.76
[INFO] [stderr]    Compiling slug v0.1.6
[INFO] [stderr]    Compiling filetime v0.2.26
[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/c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-2.0.111/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="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=835f4852481b8262 -C extra-filename=-79aac70142c9cd01 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-48675f94353037c3.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-4f69d89f8c4e1193.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-9533002ac35f5809.rmeta --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `serde_core` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f/bin/rustc --crate-name serde_core --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serde_core-1.0.228/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="alloc"' --cfg 'feature="result"' --cfg 'feature="std"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("alloc", "default", "rc", "result", "std", "unstable"))' -C metadata=7f91f7fb64377f9e -C extra-filename=-d465523463eaa8a4 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow --cap-lints=forbid --check-cfg 'cfg(if_docsrs_then_no_serde_core)' --check-cfg 'cfg(no_core_cstr)' --check-cfg 'cfg(no_core_error)' --check-cfg 'cfg(no_core_net)' --check-cfg 'cfg(no_core_num_saturating)' --check-cfg 'cfg(no_diagnostic_namespace)' --check-cfg 'cfg(no_serde_derive)' --check-cfg 'cfg(no_std_atomic)' --check-cfg 'cfg(no_std_atomic64)' --check-cfg 'cfg(no_target_has_atomic)'` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "fe01438b2caf5aa95e513e6f322a4e013174007a6a3cb02d161fc2aa13e1aa49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe01438b2caf5aa95e513e6f322a4e013174007a6a3cb02d161fc2aa13e1aa49", kill_on_drop: false }`
[INFO] [stdout] fe01438b2caf5aa95e513e6f322a4e013174007a6a3cb02d161fc2aa13e1aa49