[INFO] fetching crate mcp-exec 0.3.0...
[INFO] testing mcp-exec-0.3.0 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-8
[INFO] extracting crate mcp-exec 0.3.0 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate mcp-exec 0.3.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate mcp-exec 0.3.0
[INFO] tweaked toml for crates.io crate mcp-exec 0.3.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mcp-exec 0.3.0 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mcp-exec 0.3.0 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wasmtime-wasi-io v38.0.3
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[INFO] [stderr]   Downloaded compression-codecs v0.4.31
[INFO] [stderr]   Downloaded cap-fs-ext v3.4.5
[INFO] [stderr]   Downloaded maybe-owned v0.3.4
[INFO] [stderr]   Downloaded rustix-linux-procfs v0.1.1
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[INFO] [stderr]   Downloaded mach2 v0.4.3
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[INFO] [stderr]   Downloaded embedded-io v0.6.1
[INFO] [stderr]   Downloaded leb128fmt v0.1.0
[INFO] [stderr]   Downloaded wasmtime-internal-component-util v38.0.3
[INFO] [stderr]   Downloaded regalloc2 v0.13.2
[INFO] [stderr]   Downloaded cranelift-codegen v0.125.3
[INFO] [stderr]   Downloaded wasmtime-internal-unwinder v38.0.3
[INFO] [stderr]   Downloaded time-macros v0.2.24
[INFO] [stderr]   Downloaded ambient-authority v0.0.2
[INFO] [stderr]   Downloaded io-extras v0.18.4
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 42ff6172ef526a9431019d3fe22af223f73ab3397d9fc116d5390212a90a2eb1
[INFO] running `Command { std: "docker" "start" "-a" "42ff6172ef526a9431019d3fe22af223f73ab3397d9fc116d5390212a90a2eb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "42ff6172ef526a9431019d3fe22af223f73ab3397d9fc116d5390212a90a2eb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42ff6172ef526a9431019d3fe22af223f73ab3397d9fc116d5390212a90a2eb1", kill_on_drop: false }`
[INFO] [stdout] 42ff6172ef526a9431019d3fe22af223f73ab3397d9fc116d5390212a90a2eb1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d4ed4fca98790c190e20444a4fe0e66c71b31bc099ff09f612c9342ba6678490
[INFO] running `Command { std: "docker" "start" "-a" "d4ed4fca98790c190e20444a4fe0e66c71b31bc099ff09f612c9342ba6678490", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling libc v0.2.177
[INFO] [stderr]    Compiling log v0.4.28
[INFO] [stderr]    Compiling equivalent v1.0.2
[INFO] [stderr]    Compiling hashbrown v0.16.0
[INFO] [stderr]    Compiling foldhash v0.1.5
[INFO] [stderr]    Compiling anyhow v1.0.100
[INFO] [stderr]    Compiling heck v0.5.0
[INFO] [stderr]    Compiling memchr v2.7.6
[INFO] [stderr]    Compiling bitflags v2.10.0
[INFO] [stderr]    Compiling semver v1.0.27
[INFO] [stderr]    Compiling pin-project-lite v0.2.16
[INFO] [stderr]    Compiling syn v2.0.109
[INFO] [stderr]    Compiling cranelift-srcgen v0.125.3
[INFO] [stderr]    Compiling rustix v1.1.2
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling hashbrown v0.15.5
[INFO] [stderr]    Compiling cranelift-assembler-x64-meta v0.125.3
[INFO] [stderr]    Compiling linux-raw-sys v0.11.0
[INFO] [stderr]    Compiling bytes v1.10.1
[INFO] [stderr]    Compiling stable_deref_trait v1.2.1
[INFO] [stderr]    Compiling crc32fast v1.5.0
[INFO] [stderr]    Compiling cranelift-isle v0.125.3
[INFO] [stderr]    Compiling cranelift-bitset v0.125.3
[INFO] [stderr]    Compiling leb128fmt v0.1.0
[INFO] [stderr]    Compiling id-arena v2.2.1
[INFO] [stderr]    Compiling libm v0.2.15
[INFO] [stderr]    Compiling target-lexicon v0.13.3
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.125.3
[INFO] [stderr]    Compiling futures-sink v0.3.31
[INFO] [stderr]    Compiling allocator-api2 v0.2.21
[INFO] [stderr]    Compiling thiserror v2.0.17
[INFO] [stderr]    Compiling io-lifetimes v2.0.4
[INFO] [stderr]    Compiling wasmparser v0.240.0
[INFO] [stderr]    Compiling arbitrary v1.4.2
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling rustc-hash v2.1.1
[INFO] [stderr]    Compiling ipnet v2.11.0
[INFO] [stderr]    Compiling object v0.37.3
[INFO] [stderr]    Compiling bumpalo v3.19.0
[INFO] [stderr]    Compiling wasmparser v0.239.0
[INFO] [stderr]    Compiling writeable v0.6.2
[INFO] [stderr]    Compiling futures-task v0.3.31
[INFO] [stderr]    Compiling litemap v0.8.1
[INFO] [stderr]    Compiling futures-io v0.3.31
[INFO] [stderr]    Compiling io-extras v0.18.4
[INFO] [stderr]    Compiling ring v0.17.14
[INFO] [stderr]    Compiling ambient-authority v0.0.2
[INFO] [stderr]    Compiling icu_normalizer_data v2.1.1
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling wasm-encoder v0.239.0
[INFO] [stderr]    Compiling icu_properties_data v2.1.1
[INFO] [stderr]    Compiling wasm-encoder v0.240.0
[INFO] [stderr]    Compiling cap-primitives v3.4.5
[INFO] [stderr]    Compiling mio v1.1.0
[INFO] [stderr]    Compiling socket2 v0.6.1
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling cranelift-control v0.125.3
[INFO] [stderr]    Compiling http v1.3.1
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling typenum v1.19.0
[INFO] [stderr]    Compiling version_check v0.9.5
[INFO] [stderr]    Compiling termcolor v1.4.1
[INFO] [stderr]    Compiling percent-encoding v2.3.2
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling strsim v0.11.1
[INFO] [stderr]    Compiling wasmtime-internal-component-util v38.0.3
[INFO] [stderr]    Compiling zeroize v1.8.2
[INFO] [stderr]    Compiling zerocopy v0.8.27
[INFO] [stderr]    Compiling wasmtime-internal-unwinder v38.0.3
[INFO] [stderr]    Compiling maybe-owned v0.3.4
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling rustls-pki-types v1.13.0
[INFO] [stderr]    Compiling darling_core v0.21.3
[INFO] [stderr]    Compiling generic-array v0.14.9
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling base64 v0.22.1
[INFO] [stderr]    Compiling untrusted v0.9.0
[INFO] [stderr]    Compiling cap-std v3.4.5
[INFO] [stderr]    Compiling http-body v1.0.1
[INFO] [stderr]    Compiling wasmtime-internal-math v38.0.3
[INFO] [stderr]    Compiling alloc-no-stdlib v2.0.4
[INFO] [stderr]    Compiling wasmtime-internal-component-macro v38.0.3
[INFO] [stderr]    Compiling httparse v1.10.1
[INFO] [stderr]    Compiling alloc-stdlib v0.2.2
[INFO] [stderr]    Compiling cranelift-assembler-x64 v0.125.3
[INFO] [stderr]    Compiling itertools v0.14.0
[INFO] [stderr]    Compiling tracing-core v0.1.34
[INFO] [stderr]    Compiling tower-service v0.3.3
[INFO] [stderr]    Compiling simd-adler32 v0.3.7
[INFO] [stderr]    Compiling rustls v0.23.35
[INFO] [stderr]    Compiling try-lock v0.2.5
[INFO] [stderr]    Compiling wit-bindgen-rust v0.47.0
[INFO] [stderr]    Compiling want v0.3.1
[INFO] [stderr]    Compiling miniz_oxide v0.8.9
[INFO] [stderr]    Compiling brotli-decompressor v5.0.0
[INFO] [stderr]    Compiling prettyplease v0.2.37
[INFO] [stderr]    Compiling form_urlencoded v1.2.2
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling wasmtime-internal-jit-icache-coherence v38.0.3
[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/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-2.0.109/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"' --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=be5ae5d63020afbf -C extra-filename=-5b22fcb691692963 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-7f248eb89d15af9d.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-e50ca8f86bc2df2a.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] running `Command { std: "docker" "inspect" "d4ed4fca98790c190e20444a4fe0e66c71b31bc099ff09f612c9342ba6678490", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4ed4fca98790c190e20444a4fe0e66c71b31bc099ff09f612c9342ba6678490", kill_on_drop: false }`
[INFO] [stdout] d4ed4fca98790c190e20444a4fe0e66c71b31bc099ff09f612c9342ba6678490