[INFO] cloning repository https://github.com/paulirotta/async_cargo_mcp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/paulirotta/async_cargo_mcp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaulirotta%2Fasync_cargo_mcp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaulirotta%2Fasync_cargo_mcp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2c90bd3cd71f3e1252db854fa5446e3db3a26128
[INFO] building paulirotta/async_cargo_mcp against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaulirotta%2Fasync_cargo_mcp" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/paulirotta/async_cargo_mcp
[INFO] finished tweaking git repo https://github.com/paulirotta/async_cargo_mcp
[INFO] tweaked toml for git repo https://github.com/paulirotta/async_cargo_mcp written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/paulirotta/async_cargo_mcp on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/paulirotta/async_cargo_mcp 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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 38e474a7146971e19f1072906cf4cf6eb313ec7fd6484e47e70eccdfa12f6b45
[INFO] running `Command { std: "docker" "start" "-a" "38e474a7146971e19f1072906cf4cf6eb313ec7fd6484e47e70eccdfa12f6b45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "38e474a7146971e19f1072906cf4cf6eb313ec7fd6484e47e70eccdfa12f6b45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38e474a7146971e19f1072906cf4cf6eb313ec7fd6484e47e70eccdfa12f6b45", kill_on_drop: false }`
[INFO] [stdout] 38e474a7146971e19f1072906cf4cf6eb313ec7fd6484e47e70eccdfa12f6b45
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 045f79618e3797f85df297b22c0e3ff9669dffc2e8b1f23a9b60824ac24b2004
[INFO] running `Command { std: "docker" "start" "-a" "045f79618e3797f85df297b22c0e3ff9669dffc2e8b1f23a9b60824ac24b2004", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]    Compiling tracing-core v0.1.34
[INFO] [stderr]    Compiling log v0.4.28
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling bitflags v2.9.4
[INFO] [stderr]    Compiling serde_json v1.0.143
[INFO] [stderr]    Compiling cfg_aliases v0.2.1
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling regex-syntax v0.8.6
[INFO] [stderr]    Compiling ref-cast v1.0.24
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling rustix v1.0.8
[INFO] [stderr]    Compiling anstyle-query v1.1.4
[INFO] [stderr]    Compiling memchr v2.7.5
[INFO] [stderr]    Compiling thiserror v2.0.16
[INFO] [stderr]    Compiling deranged v0.5.3
[INFO] [stderr]    Compiling nix v0.30.1
[INFO] [stderr]    Compiling anstream v0.6.20
[INFO] [stderr]    Compiling thread_local v1.1.9
[INFO] [stderr]    Compiling dyn-clone v1.0.20
[INFO] [stderr]    Compiling time-core v0.1.6
[INFO] [stderr]    Compiling nu-ansi-term v0.50.1
[INFO] [stderr]    Compiling linux-raw-sys v0.9.4
[INFO] [stderr]    Compiling clap_lex v0.7.5
[INFO] [stderr]    Compiling option-ext v0.2.0
[INFO] [stderr]    Compiling crossbeam-channel v0.5.15
[INFO] [stderr]    Compiling tracing-log v0.2.0
[INFO] [stderr]    Compiling matchit v0.8.4
[INFO] [stderr]    Compiling clap_builder v4.5.47
[INFO] [stderr]    Compiling regex-automata v0.4.10
[INFO] [stderr]    Compiling time v0.3.43
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]    Compiling signal-hook-registry v1.4.6
[INFO] [stderr]    Compiling mio v1.0.4
[INFO] [stderr]    Compiling socket2 v0.6.0
[INFO] [stderr]    Compiling parking_lot v0.12.4
[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/4987e9d4227139400384ab59296ffee3b0fb1183/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-2.0.106/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-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=4fcbe6625b2770b6 -C extra-filename=-cd55a43f869e0382 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-0a3b3fe24b469f09.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-e098ac900c08002b.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-b3925cc8f83e9ac1.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" "045f79618e3797f85df297b22c0e3ff9669dffc2e8b1f23a9b60824ac24b2004", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "045f79618e3797f85df297b22c0e3ff9669dffc2e8b1f23a9b60824ac24b2004", kill_on_drop: false }`
[INFO] [stdout] 045f79618e3797f85df297b22c0e3ff9669dffc2e8b1f23a9b60824ac24b2004