[INFO] fetching crate traceon 0.4.0...
[INFO] building traceon-0.4.0 against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[INFO] extracting crate traceon 0.4.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate traceon 0.4.0
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate traceon 0.4.0
[INFO] tweaked toml for crates.io crate traceon 0.4.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate traceon 0.4.0 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 traceon 0.4.0 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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 7ee1e6ddaa249afbc9dc6ef6d868b991f60681169e4effaa8eb0472ad052c67e
[INFO] running `Command { std: "docker" "start" "-a" "7ee1e6ddaa249afbc9dc6ef6d868b991f60681169e4effaa8eb0472ad052c67e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ee1e6ddaa249afbc9dc6ef6d868b991f60681169e4effaa8eb0472ad052c67e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ee1e6ddaa249afbc9dc6ef6d868b991f60681169e4effaa8eb0472ad052c67e", kill_on_drop: false }`
[INFO] [stdout] 7ee1e6ddaa249afbc9dc6ef6d868b991f60681169e4effaa8eb0472ad052c67e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] feaf970d3df17093ed608403df65bac4f22df816f4cfa3e585390c8faecea195
[INFO] running `Command { std: "docker" "start" "-a" "feaf970d3df17093ed608403df65bac4f22df816f4cfa3e585390c8faecea195", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling regex-syntax v0.8.6
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling serde_json v1.0.143
[INFO] [stderr]    Compiling iana-time-zone v0.1.63
[INFO] [stderr]    Compiling memchr v2.7.5
[INFO] [stderr]    Compiling nu-ansi-term v0.50.1
[INFO] [stderr]    Compiling thread_local v1.1.9
[INFO] [stderr]    Compiling chrono v0.4.41
[INFO] [stderr]    Compiling regex-automata v0.4.10
[INFO] [stderr]    Compiling regex v1.11.2
[INFO] [stderr]    Compiling tracing-attributes v0.1.30
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling tracing-subscriber v0.3.19
[INFO] [stderr]    Compiling traceon v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.85s
[INFO] running `Command { std: "docker" "inspect" "feaf970d3df17093ed608403df65bac4f22df816f4cfa3e585390c8faecea195", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "feaf970d3df17093ed608403df65bac4f22df816f4cfa3e585390c8faecea195", kill_on_drop: false }`
[INFO] [stdout] feaf970d3df17093ed608403df65bac4f22df816f4cfa3e585390c8faecea195
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0f27501f3de6c29f2fb4af409d2c3a4bd52c1f6649323cffbcf7aa402e6067e3
[INFO] running `Command { std: "docker" "start" "-a" "0f27501f3de6c29f2fb4af409d2c3a4bd52c1f6649323cffbcf7aa402e6067e3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]    Compiling log v0.4.27
[INFO] [stderr]    Compiling zerocopy v0.8.26
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling thiserror v2.0.16
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling anyhow v1.0.99
[INFO] [stderr]    Compiling http-body-util v0.1.3
[INFO] [stderr]    Compiling itertools v0.14.0
[INFO] [stderr]    Compiling rayon-core v1.13.0
[INFO] [stderr]    Compiling iri-string v0.7.8
[INFO] [stderr]    Compiling bitflags v2.9.3
[INFO] [stderr]    Compiling half v2.6.0
[INFO] [stderr]    Compiling plotters-backend v0.3.7
[INFO] [stderr]    Compiling ciborium-io v0.2.2
[INFO] [stderr]    Compiling clap_builder v4.5.46
[INFO] [stderr]    Compiling deranged v0.4.0
[INFO] [stderr]    Compiling chrono v0.4.41
[INFO] [stderr]    Compiling tracing-log v0.2.0
[INFO] [stderr]    Compiling itertools v0.13.0
[INFO] [stderr]    Compiling time-core v0.1.4
[INFO] [stderr]    Compiling ciborium-ll v0.2.2
[INFO] [stderr]    Compiling plotters-svg v0.3.7
[INFO] [stderr]    Compiling cast v0.3.0
[INFO] [stderr]    Compiling oorandom v11.1.5
[INFO] [stderr]    Compiling plotters v0.3.7
[INFO] [stderr]    Compiling anes v0.1.6
[INFO] [stderr]    Compiling claims v0.8.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling time v0.3.41
[INFO] [stderr]    Compiling crossbeam-channel v0.5.15
[INFO] [stderr]    Compiling crossbeam-deque v0.8.6
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]    Compiling mio v1.0.4
[INFO] [stderr]    Compiling signal-hook-registry v1.4.6
[INFO] [stderr]    Compiling socket2 v0.6.0
[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/d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6/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="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=b3e92615ea50e1e1 -C extra-filename=-ed77e80ca4889f85 --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" "0f27501f3de6c29f2fb4af409d2c3a4bd52c1f6649323cffbcf7aa402e6067e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f27501f3de6c29f2fb4af409d2c3a4bd52c1f6649323cffbcf7aa402e6067e3", kill_on_drop: false }`
[INFO] [stdout] 0f27501f3de6c29f2fb4af409d2c3a4bd52c1f6649323cffbcf7aa402e6067e3