[INFO] fetching crate solver-mcp 0.1.0...
[INFO] testing solver-mcp-0.1.0 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate solver-mcp 0.1.0 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate solver-mcp 0.1.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate solver-mcp 0.1.0
[INFO] tweaked toml for crates.io crate solver-mcp 0.1.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate solver-mcp 0.1.0 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate solver-mcp 0.1.0 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" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ref-cast-impl v1.0.26
[INFO] [stderr]   Downloaded ref-cast v1.0.26
[INFO] [stderr]   Downloaded futures-task v0.3.33
[INFO] [stderr]   Downloaded darling_macro v0.24.0
[INFO] [stderr]   Downloaded mio v1.2.2
[INFO] [stderr]   Downloaded pumpkin-checking v0.5.0
[INFO] [stderr]   Downloaded futures-io v0.3.33
[INFO] [stderr]   Downloaded futures-sink v0.3.33
[INFO] [stderr]   Downloaded enum-map-derive v1.0.1
[INFO] [stderr]   Downloaded bitfield-macros v0.19.5
[INFO] [stderr]   Downloaded futures-core v0.3.33
[INFO] [stderr]   Downloaded env_filter v2.0.0
[INFO] [stderr]   Downloaded drcp-format v0.3.1
[INFO] [stderr]   Downloaded darling_macro v0.21.3
[INFO] [stderr]   Downloaded futures-macro v0.3.33
[INFO] [stderr]   Downloaded enumset v1.1.14
[INFO] [stderr]   Downloaded downcast-rs v2.0.2
[INFO] [stderr]   Downloaded pumpkin-constraints v0.5.0
[INFO] [stderr]   Downloaded find-msvc-tools v0.1.10
[INFO] [stderr]   Downloaded rmcp-macros v3.1.2
[INFO] [stderr]   Downloaded enumset_derive v0.15.0
[INFO] [stderr]   Downloaded flatzinc v0.3.21
[INFO] [stderr]   Downloaded jiff-static v0.2.35
[INFO] [stderr]   Downloaded futures-executor v0.3.33
[INFO] [stderr]   Downloaded convert_case v0.11.0
[INFO] [stderr]   Downloaded pastey v0.2.3
[INFO] [stderr]   Downloaded darling v0.21.3
[INFO] [stderr]   Downloaded enum-map v3.1.0
[INFO] [stderr]   Downloaded bitfield-struct v0.13.0
[INFO] [stderr]   Downloaded bitfield v0.19.5
[INFO] [stderr]   Downloaded pumpkin-conflict-resolvers v0.5.0
[INFO] [stderr]   Downloaded futures-util v0.3.33
[INFO] [stderr]   Downloaded tokio-stream v0.1.18
[INFO] [stderr]   Downloaded env_logger v0.11.11
[INFO] [stderr]   Downloaded futures-channel v0.3.33
[INFO] [stderr]   Downloaded futures v0.3.33
[INFO] [stderr]   Downloaded darling v0.24.0
[INFO] [stderr]   Downloaded signal-hook v0.4.4
[INFO] [stderr]   Downloaded matrixmultiply v0.3.11
[INFO] [stderr]   Downloaded darling_core v0.24.0
[INFO] [stderr]   Downloaded darling_core v0.21.3
[INFO] [stderr]   Downloaded cc v1.4.2
[INFO] [stderr]   Downloaded pumpkin-propagators v0.5.0
[INFO] [stderr]   Downloaded sprs v0.11.5
[INFO] [stderr]   Downloaded jiff-core v0.1.0
[INFO] [stderr]   Downloaded tokio-util v0.7.19
[INFO] [stderr]   Downloaded winnow v0.6.26
[INFO] [stderr]   Downloaded process-wrap v9.1.0
[INFO] [stderr]   Downloaded portable-atomic v1.14.0
[INFO] [stderr]   Downloaded microlp v0.6.0
[INFO] [stderr]   Downloaded pumpkin-core v0.5.0
[INFO] [stderr]   Downloaded ndarray v0.17.2
[INFO] [stderr]   Downloaded rmcp v3.1.2
[INFO] [stderr]   Downloaded pumpkin-solver v0.5.0
[INFO] [stderr]   Downloaded jiff v0.2.35
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 147d6a76c153a300296e6cbe0f743c927088e47ae856729a0a3529b0f3b5ec2b
[INFO] running `Command { std: "docker" "start" "147d6a76c153a300296e6cbe0f743c927088e47ae856729a0a3529b0f3b5ec2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "147d6a76c153a300296e6cbe0f743c927088e47ae856729a0a3529b0f3b5ec2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "147d6a76c153a300296e6cbe0f743c927088e47ae856729a0a3529b0f3b5ec2b" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "147d6a76c153a300296e6cbe0f743c927088e47ae856729a0a3529b0f3b5ec2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "147d6a76c153a300296e6cbe0f743c927088e47ae856729a0a3529b0f3b5ec2b" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v3.0.3
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling syn v2.0.119
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling utf8parse v0.2.2
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling getrandom v0.4.3
[INFO] [stderr]    Compiling thiserror v2.0.20
[INFO] [stderr]    Compiling rand_core v0.10.1
[INFO] [stderr]    Compiling is_terminal_polyfill v1.70.2
[INFO] [stderr]    Compiling colorchoice v1.0.5
[INFO] [stderr]    Compiling anstyle-query v1.1.5
[INFO] [stderr]    Compiling log v0.4.33
[INFO] [stderr]    Compiling dyn-clone v1.0.20
[INFO] [stderr]    Compiling serde_core v1.0.229
[INFO] [stderr]    Compiling strsim v0.11.1
[INFO] [stderr]    Compiling simd-adler32 v0.3.10
[INFO] [stderr]    Compiling clap_lex v1.1.0
[INFO] [stderr]    Compiling adler2 v2.0.1
[INFO] [stderr]    Compiling pin-project-lite v0.2.17
[INFO] [stderr]    Compiling futures-sink v0.3.33
[INFO] [stderr]    Compiling anstyle-parse v1.0.0
[INFO] [stderr]    Compiling futures-core v0.3.33
[INFO] [stderr]    Compiling hashbrown v0.17.1
[INFO] [stderr]    Compiling unicode-segmentation v1.13.3
[INFO] [stderr]    Compiling either v1.17.0
[INFO] [stderr]    Compiling aho-corasick v1.1.5
[INFO] [stderr]    Compiling anstream v1.0.0
[INFO] [stderr]    Compiling chacha20 v0.10.2
[INFO] [stderr]    Compiling miniz_oxide v0.8.9
[INFO] [stderr]    Compiling matrixmultiply v0.3.11
[INFO] [stderr]    Compiling serde v1.0.229
[INFO] [stderr]    Compiling itertools v0.15.0
[INFO] [stderr]    Compiling clap_builder v4.6.6
[INFO] [stderr]    Compiling rand v0.10.2
[INFO] [stderr]    Compiling downcast-rs v2.0.2
[INFO] [stderr]    Compiling regex-syntax v0.8.11
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling convert_case v0.11.0
[INFO] [stderr]    Compiling num-bigint v0.4.8
[INFO] [stderr]    Compiling num-iter v0.1.46
[INFO] [stderr]    Compiling flate2 v1.1.9
[INFO] [stderr]    Compiling futures-channel v0.3.33
[INFO] [stderr]    Compiling indexmap v2.14.0
[INFO] [stderr]    Compiling zmij v1.0.23
[INFO] [stderr]    Compiling futures-task v0.3.33
[INFO] [stderr]    Compiling rawpointer v0.2.1
[INFO] [stderr]    Compiling futures-io v0.3.33
[INFO] [stderr]    Compiling slab v0.4.12
[INFO] [stderr]    Compiling find-msvc-tools v0.1.10
[INFO] [stderr]    Compiling ref-cast v1.0.26
[INFO] [stderr]    Compiling serde_json v1.0.151
[INFO] [stderr]    Compiling cc v1.4.2
[INFO] [stderr]    Compiling errno v0.3.14
[INFO] [stderr]    Compiling bytes v1.12.1
[INFO] [stderr]    Compiling memchr v2.8.3
[INFO] [stderr]    Compiling jiff-core v0.1.0
[INFO] [stderr]    Compiling itoa v1.0.18
[INFO] [stderr]    Compiling signal-hook v0.4.4
[INFO] [stderr]    Compiling signal-hook-registry v1.4.8
[INFO] [stderr]    Compiling winnow v0.6.26
[INFO] [stderr]    Compiling regex-automata v0.4.18
[INFO] [stderr]    Compiling pumpkin-solver v0.5.0
[INFO] [stderr]    Compiling smallvec v1.15.2
[INFO] [stderr]    Compiling rmcp v3.1.2
[INFO] [stderr]    Compiling uuid v1.24.0
[INFO] [stderr]    Compiling web-time v1.1.0
[INFO] [stderr]    Compiling pastey v0.2.3
[INFO] [stderr]    Compiling ndarray v0.17.2
[INFO] [stderr]    Compiling num-rational v0.4.2
[INFO] [stderr]    Compiling jiff v0.2.35
[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/1.99.0-beta.8-x86_64-unknown-linux-gnu/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-2.0.119/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 -C debug-assertions=off --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-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=d282e951f3f0936c -C extra-filename=-9debc0f1dc78aeb5 --out-dir /opt/rustwide/target/release/deps -C strip=debuginfo -L dependency=/opt/rustwide/target/release/deps --extern proc_macro2=/opt/rustwide/target/release/deps/libproc_macro2-58bd5a67493b0c92.rmeta --extern quote=/opt/rustwide/target/release/deps/libquote-bb159eae73371f0d.rmeta --extern unicode_ident=/opt/rustwide/target/release/deps/libunicode_ident-3d1450b03eaa80c7.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/1.99.0-beta.8-x86_64-unknown-linux-gnu/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-3.0.3/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 -C debug-assertions=off --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"' --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=383136e654babcc2 -C extra-filename=-7b8676c6bb8ad76c --out-dir /opt/rustwide/target/release/deps -C strip=debuginfo -L dependency=/opt/rustwide/target/release/deps --extern proc_macro2=/opt/rustwide/target/release/deps/libproc_macro2-58bd5a67493b0c92.rmeta --extern quote=/opt/rustwide/target/release/deps/libquote-bb159eae73371f0d.rmeta --extern unicode_ident=/opt/rustwide/target/release/deps/libunicode_ident-3d1450b03eaa80c7.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "147d6a76c153a300296e6cbe0f743c927088e47ae856729a0a3529b0f3b5ec2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "147d6a76c153a300296e6cbe0f743c927088e47ae856729a0a3529b0f3b5ec2b", kill_on_drop: false }`
[INFO] [stdout] 147d6a76c153a300296e6cbe0f743c927088e47ae856729a0a3529b0f3b5ec2b
