[INFO] fetching crate prom-mock-rs 0.2.0...
[INFO] building prom-mock-rs-0.2.0 against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[INFO] extracting crate prom-mock-rs 0.2.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate prom-mock-rs 0.2.0
[INFO] finished tweaking crates.io crate prom-mock-rs 0.2.0
[INFO] tweaked toml for crates.io crate prom-mock-rs 0.2.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate prom-mock-rs 0.2.0 on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate prom-mock-rs 0.2.0 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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b813dc4fc5b1f8580b0ce1118b1d8e3b19e9b044c1c763eed8f96477320a1158
[INFO] running `Command { std: "docker" "start" "-a" "b813dc4fc5b1f8580b0ce1118b1d8e3b19e9b044c1c763eed8f96477320a1158", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b813dc4fc5b1f8580b0ce1118b1d8e3b19e9b044c1c763eed8f96477320a1158", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b813dc4fc5b1f8580b0ce1118b1d8e3b19e9b044c1c763eed8f96477320a1158", kill_on_drop: false }`
[INFO] [stdout] b813dc4fc5b1f8580b0ce1118b1d8e3b19e9b044c1c763eed8f96477320a1158
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 43983ccfcd7535e654848624f20b3992c863b2be6249576505414e3ed89363a0
[INFO] running `Command { std: "docker" "start" "-a" "43983ccfcd7535e654848624f20b3992c863b2be6249576505414e3ed89363a0", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.105
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling rustix v1.0.8
[INFO] [stderr]    Compiling anyhow v1.0.99
[INFO] [stderr]    Compiling tracing-core v0.1.34
[INFO] [stderr]    Compiling log v0.4.27
[INFO] [stderr]    Compiling bytes v1.10.1
[INFO] [stderr]    Compiling indexmap v2.10.0
[INFO] [stderr]    Compiling socket2 v0.5.10
[INFO] [stderr]    Compiling http-body v1.0.1
[INFO] [stderr]    Compiling mio v1.0.4
[INFO] [stderr]    Compiling prettyplease v0.2.36
[INFO] [stderr]    Compiling bitflags v2.9.1
[INFO] [stderr]    Compiling futures-task v0.3.31
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling linux-raw-sys v0.9.4
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling itertools v0.12.1
[INFO] [stderr]    Compiling fastrand v2.3.0
[INFO] [stderr]    Compiling tower-service v0.3.3
[INFO] [stderr]    Compiling fixedbitset v0.4.2
[INFO] [stderr]    Compiling anstyle-parse v0.2.7
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling petgraph v0.6.5
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling anstyle-query v1.1.4
[INFO] [stderr]    Compiling multimap v0.10.1
[INFO] [stderr]    Compiling colorchoice v1.0.4
[INFO] [stderr]    Compiling sync_wrapper v1.0.2
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]    Compiling serde_json v1.0.142
[INFO] [stderr]    Compiling tower-layer v0.3.3
[INFO] [stderr]    Compiling anstream v0.6.20
[INFO] [stderr]    Compiling rand_core v0.6.4
[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/d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-2.0.105/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=114b970b671dfbba -C extra-filename=-d376024015effb8c --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-007a4b63d2d3d0be.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-6a1fe40cce5b6ca8.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" "43983ccfcd7535e654848624f20b3992c863b2be6249576505414e3ed89363a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43983ccfcd7535e654848624f20b3992c863b2be6249576505414e3ed89363a0", kill_on_drop: false }`
[INFO] [stdout] 43983ccfcd7535e654848624f20b3992c863b2be6249576505414e3ed89363a0