[INFO] fetching crate serial-mcp 0.9.3...
[INFO] checking serial-mcp-0.9.3 against 416264364aa47959f5827723e1d7dabc95d0744b for pr-162242
[INFO] extracting crate serial-mcp 0.9.3 into /workspace/builds/worker-7-tc2/source
[INFO] removed /workspace/builds/worker-7-tc2/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate serial-mcp 0.9.3
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate serial-mcp 0.9.3
[INFO] tweaked toml for crates.io crate serial-mcp 0.9.3 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate serial-mcp 0.9.3 on toolchain 416264364aa47959f5827723e1d7dabc95d0744b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+416264364aa47959f5827723e1d7dabc95d0744b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate serial-mcp 0.9.3 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" "+416264364aa47959f5827723e1d7dabc95d0744b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: explicit `package.readme` can be inferred
[INFO] [stderr]    --> Cargo.toml:143:1
[INFO] [stderr]     |
[INFO] [stderr] 143 | readme = "README.md"
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `cargo::manual_readme` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.readme`
[INFO] [stderr] warning: `package.homepage` is redundant with `package.repository`
[INFO] [stderr]    --> Cargo.toml:139:12
[INFO] [stderr]     |
[INFO] [stderr] 139 | homepage = "https://github.com/qarnet/serial-mcp"
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 144 | repository = "https://github.com/qarnet/serial-mcp"
[INFO] [stderr]     |              --------------------------------------
[INFO] [stderr]     |
[INFO] [stderr]     = note: `cargo::redundant_homepage` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.homepage`
[INFO] [stderr] warning: `serial-mcp` (manifest) generated 2 warnings
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 78bd1ef14871f020dc7a0d6af5553243a7069b853b56b2a6f08739d5bd15af52
[INFO] running `Command { std: "docker" "start" "78bd1ef14871f020dc7a0d6af5553243a7069b853b56b2a6f08739d5bd15af52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "78bd1ef14871f020dc7a0d6af5553243a7069b853b56b2a6f08739d5bd15af52", 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" "78bd1ef14871f020dc7a0d6af5553243a7069b853b56b2a6f08739d5bd15af52" "/opt/rustwide/cargo-home/bin/cargo" "+416264364aa47959f5827723e1d7dabc95d0744b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "78bd1ef14871f020dc7a0d6af5553243a7069b853b56b2a6f08739d5bd15af52", 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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "78bd1ef14871f020dc7a0d6af5553243a7069b853b56b2a6f08739d5bd15af52" "/opt/rustwide/cargo-home/bin/cargo" "+416264364aa47959f5827723e1d7dabc95d0744b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] warning: explicit `package.readme` can be inferred
[INFO] [stderr]    --> Cargo.toml:143:1
[INFO] [stderr]     |
[INFO] [stderr] 143 | readme = "README.md"
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `cargo::manual_readme` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.readme`
[INFO] [stderr] warning: `package.homepage` is redundant with `package.repository`
[INFO] [stderr]    --> Cargo.toml:139:12
[INFO] [stderr]     |
[INFO] [stderr] 139 | homepage = "https://github.com/qarnet/serial-mcp"
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 144 | repository = "https://github.com/qarnet/serial-mcp"
[INFO] [stderr]     |              --------------------------------------
[INFO] [stderr]     |
[INFO] [stderr]     = note: `cargo::redundant_homepage` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.homepage`
[INFO] [stderr] warning: `serial-mcp` (manifest) generated 2 warnings
[INFO] [stderr]    Compiling syn v2.0.118
[INFO] [stderr]    Compiling libc v0.2.186
[INFO] [stderr]    Compiling syn v3.0.3
[INFO] [stderr]    Compiling serde_core v1.0.229
[INFO] [stderr]     Checking log v0.4.32
[INFO] [stderr]    Compiling serde v1.0.229
[INFO] [stderr]    Compiling serde_json v1.0.151
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]    Compiling nix v0.31.3
[INFO] [stderr]     Checking regex-automata v0.4.16
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking hashbrown v0.17.1
[INFO] [stderr]     Checking rustls-pki-types v1.14.1
[INFO] [stderr]    Compiling rustls v0.23.40
[INFO] [stderr]     Checking chacha20 v0.10.0
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking winnow v1.0.4
[INFO] [stderr]    Compiling rmcp v3.1.0
[INFO] [stderr]     Checking bit-vec v0.8.0
[INFO] [stderr]     Checking tracing-log v0.2.0
[INFO] [stderr]     Checking lock_api v0.4.14
[INFO] [stderr]    Compiling pastey v0.2.3
[INFO] [stderr]     Checking toml_writer v1.1.2+spec-1.1.0
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]     Checking num-iter v0.1.45
[INFO] [stderr]     Checking bit-set v0.8.0
[INFO] [stderr]     Checking base64 v0.23.0
[INFO] [stderr]     Checking matchit v0.8.4
[INFO] [stderr]    Compiling unicode-general-category v1.1.0
[INFO] [stderr]     Checking toml_parser v1.1.3+spec-1.1.0
[INFO] [stderr]     Checking borrow-or-share v0.2.4
[INFO] [stderr]    Compiling serial-mcp v0.9.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking webpki-roots v1.0.8
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]     Checking bytecount v0.6.9
[INFO] [stderr]     Checking micromap v0.3.0
[INFO] [stderr]     Checking pico-args v0.5.0
[INFO] [stderr]    Compiling jobserver v0.1.34
[INFO] [stderr]     Checking num-cmp v0.1.0
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]    Compiling anyhow v1.0.104
[INFO] [stderr]     Checking uuid-simd v0.8.0
[INFO] [stderr]     Checking jsonschema-regex v0.49.2
[INFO] [stderr]     Checking unarray v0.1.4
[INFO] [stderr]    Compiling mutants v0.0.4
[INFO] [stderr]    Compiling cc v1.2.65
[INFO] [stderr]     Checking indexmap v2.14.0
[INFO] [stderr]     Checking num-rational v0.4.2
[INFO] [stderr]     Checking num v0.4.3
[INFO] [stderr]     Checking errno v0.3.14
[INFO] [stderr]     Checking mio v1.2.1
[INFO] [stderr]     Checking socket2 v0.6.4
[INFO] [stderr]     Checking getrandom v0.3.4
[INFO] [stderr]     Checking getrandom v0.4.3
[INFO] [stderr]     Checking getrandom v0.2.17
[INFO] [stderr]     Checking nix v0.26.4
[INFO] [stderr]     Checking rand_core v0.9.5
[INFO] [stderr]     Checking libudev v0.3.0
[INFO] [stderr]     Checking parking_lot_core v0.9.12
[INFO] [stderr]     Checking signal-hook-registry v1.4.8
[INFO] [stderr]     Checking tempfile v3.27.0
[INFO] [stderr]     Checking uuid v1.24.0
[INFO] [stderr]     Checking rand v0.10.1
[INFO] [stderr]     Checking dirs-sys v0.5.0
[INFO] [stderr]     Checking fraction v0.15.4
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking dirs v6.0.0
[INFO] [stderr]     Checking parking_lot v0.12.5
[INFO] [stderr]     Checking wait-timeout v0.2.1
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stderr]     Checking rand v0.9.4
[INFO] [stderr]     Checking rand_xorshift v0.4.0
[INFO] [stderr]     Checking rusty-fork v0.3.1
[INFO] [stderr]    Compiling ring v0.17.14
[INFO] [stderr]    Compiling libfuzzer-sys v0.4.13
[INFO] [stderr]     Checking proptest v1.11.0
[INFO] [stderr]     Checking matchers v0.2.0
[INFO] [stderr]     Checking regex v1.13.1
[INFO] [stderr]     Checking fancy-regex v0.18.0
[INFO] [stderr]    Compiling serde_derive_internals v0.30.0
[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/416264364aa47959f5827723e1d7dabc95d0744b/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-2.0.118/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat,unused-externs-silent --crate-type lib --emit=dep-info,metadata,link -Z embed-metadata=no -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=4ff726f669660d2c -C extra-filename=-9416ed7da02c6d0e --out-dir /opt/rustwide/target/debug/build/syn/9416ed7da02c6d0e/out -L dependency=/opt/rustwide/target/debug/build/proc-macro2/d4cb564e807a9cd7/out -L dependency=/opt/rustwide/target/debug/build/unicode-ident/8c98a1a0e58216a9/out --extern proc_macro2=/opt/rustwide/target/debug/build/proc-macro2/d4cb564e807a9cd7/out/libproc_macro2-d4cb564e807a9cd7.rmeta --extern quote=/opt/rustwide/target/debug/build/quote/aa2c5b8519914b46/out/libquote-aa2c5b8519914b46.rmeta --extern unicode_ident=/opt/rustwide/target/debug/build/unicode-ident/8c98a1a0e58216a9/out/libunicode_ident-8c98a1a0e58216a9.rmeta --cap-lints allow --cap-lints=forbid --force-warn=unused_crate_dependencies` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "78bd1ef14871f020dc7a0d6af5553243a7069b853b56b2a6f08739d5bd15af52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78bd1ef14871f020dc7a0d6af5553243a7069b853b56b2a6f08739d5bd15af52", kill_on_drop: false }`
[INFO] [stdout] 78bd1ef14871f020dc7a0d6af5553243a7069b853b56b2a6f08739d5bd15af52
