[INFO] fetching crate free_log_writer 0.2.0...
[INFO] testing free_log_writer-0.2.0 against beta-2026-03-05 for beta-1.95-1
[INFO] extracting crate free_log_writer 0.2.0 into /workspace/builds/worker-7-tc2/source
[INFO] removed /workspace/builds/worker-7-tc2/source/.cargo/config.toml
[INFO] started tweaking crates.io crate free_log_writer 0.2.0
[INFO] finished tweaking crates.io crate free_log_writer 0.2.0
[INFO] tweaked toml for crates.io crate free_log_writer 0.2.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate free_log_writer 0.2.0 on toolchain beta-2026-03-05
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-03-05" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate free_log_writer 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" "+beta-2026-03-05" "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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-03-05" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 84fa86ab0864b8110bf5dcaac36e306fe81893e89f0bfbc165b6bd168e811df1
[INFO] running `Command { std: "docker" "start" "-a" "84fa86ab0864b8110bf5dcaac36e306fe81893e89f0bfbc165b6bd168e811df1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "84fa86ab0864b8110bf5dcaac36e306fe81893e89f0bfbc165b6bd168e811df1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84fa86ab0864b8110bf5dcaac36e306fe81893e89f0bfbc165b6bd168e811df1", kill_on_drop: false }`
[INFO] [stdout] 84fa86ab0864b8110bf5dcaac36e306fe81893e89f0bfbc165b6bd168e811df1
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-03-05" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a8be65013bd867f30407d72ccf510a09386f85e331402e5e75a0a3da48699658
[INFO] running `Command { std: "docker" "start" "-a" "a8be65013bd867f30407d72ccf510a09386f85e331402e5e75a0a3da48699658", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]    Compiling autocfg v1.3.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.14
[INFO] [stderr]    Compiling bytes v1.7.1
[INFO] [stderr]    Compiling log v0.4.22
[INFO] [stderr]    Compiling futures-core v0.3.30
[INFO] [stderr]    Compiling itoa v1.0.11
[INFO] [stderr]    Compiling futures-sink v0.3.30
[INFO] [stderr]    Compiling once_cell v1.19.0
[INFO] [stderr]    Compiling futures-task v0.3.30
[INFO] [stderr]    Compiling futures-io v0.3.30
[INFO] [stderr]    Compiling powerfmt v0.2.0
[INFO] [stderr]    Compiling num-conv v0.1.0
[INFO] [stderr]    Compiling time-core v0.1.2
[INFO] [stderr]    Compiling httparse v1.9.4
[INFO] [stderr]    Compiling futures-channel v0.3.30
[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]    Compiling hashbrown v0.14.5
[INFO] [stderr]    Compiling serde v1.0.207
[INFO] [stderr]    Compiling subtle v2.6.1
[INFO] [stderr]    Compiling httpdate v1.0.3
[INFO] [stderr]    Compiling time-macros v0.2.18
[INFO] [stderr]    Compiling tracing-core v0.1.32
[INFO] [stderr]    Compiling deranged v0.3.11
[INFO] [stderr]    Compiling vsimd v0.8.0
[INFO] [stderr]    Compiling either v1.13.0
[INFO] [stderr]    Compiling outref v0.5.1
[INFO] [stderr]    Compiling cpufeatures v0.2.13
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling pkg-config v0.3.30
[INFO] [stderr]    Compiling regex-syntax v0.8.4
[INFO] [stderr]    Compiling semver v1.0.23
[INFO] [stderr]    Compiling zeroize v1.8.1
[INFO] [stderr]    Compiling regex-lite v0.1.6
[INFO] [stderr]    Compiling http v0.2.12
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling http v1.1.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.74
[INFO] [stderr]    Compiling indexmap v2.4.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]    Compiling signal-hook-registry v1.4.2
[INFO] [stderr]    Compiling mio v1.0.2
[INFO] [stderr]    Compiling socket2 v0.5.7
[INFO] [stderr]    Compiling jobserver v0.1.32
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling parking_lot v0.12.3
[INFO] [stderr]    Compiling cc v1.1.11
[INFO] [stderr]    Compiling http-body v0.4.6
[INFO] [stderr]    Compiling base64-simd v0.8.0
[INFO] [stderr]    Compiling http-body v1.0.1
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling bytes-utils v0.1.4
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling serde_json v1.0.124
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling rustls v0.21.12
[INFO] [stderr]    Compiling local-waker v0.1.4
[INFO] [stderr]    Compiling tinyvec_macros v0.1.1
[INFO] [stderr]    Compiling time v0.3.36
[INFO] [stderr]    Compiling regex-automata v0.4.7
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling base64 v0.21.7
[INFO] [stderr]    Compiling zstd-safe v7.2.1
[INFO] [stderr]    Compiling tinyvec v1.8.0
[INFO] [stderr]    Compiling actix-utils v3.0.1
[INFO] [stderr]    Compiling actix-service v2.0.2
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling block-buffer v0.10.4
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]    Compiling rustls-pemfile v1.0.4
[INFO] [stderr]    Compiling aws-types v1.3.3
[INFO] [stderr]    Compiling miniz_oxide v0.7.4
[INFO] [stderr]    Compiling bytestring v1.3.1
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling cookie v0.16.2
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]    Compiling unicode-bidi v0.3.15
[INFO] [stderr]    Compiling fastrand v2.1.0
[INFO] [stderr]    Compiling rustls-native-certs v0.6.3
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling ring v0.17.8
[INFO] [stderr]    Compiling zstd-sys v2.0.13+zstd.1.5.6
[INFO] [stderr]    Compiling flate2 v1.0.31
[INFO] [stderr]    Compiling brotli v6.0.0
[INFO] [stderr]    Compiling local-channel v0.1.5
[INFO] [stderr]    Compiling unicase v2.7.0
[INFO] [stderr]    Compiling hmac v0.12.1
[INFO] [stderr]    Compiling sha2 v0.10.8
[INFO] [stderr]    Compiling sha1 v0.10.6
[INFO] [stderr]    Compiling tracing v0.1.40
[INFO] [stderr]    Compiling encoding_rs v0.8.34
[INFO] [stderr]    Compiling unicode-normalization v0.1.23
[INFO] [stderr]    Compiling impl-more v0.1.6
[INFO] [stderr]    Compiling uuid v1.10.0
[INFO] [stderr]    Compiling language-tags v0.3.2
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]    Compiling rustversion v1.0.17
[INFO] [stderr]    Compiling sharded-slab v0.1.7
[INFO] [stderr]    Compiling mime_guess v2.0.5
[INFO] [stderr]    Compiling thread_local v1.1.8
[INFO] [stderr]    Compiling idna v0.5.0
[INFO] [stderr]    Compiling xmlparser v0.13.6
[INFO] [stderr]    Compiling url v2.5.2
[INFO] [stderr]    Compiling v_htmlescape v0.15.8
[INFO] [stderr]    Compiling thiserror v1.0.63
[INFO] [stderr]    Compiling regex v1.10.6
[INFO] [stderr]    Compiling anstyle-parse v0.2.5
[INFO] [stderr]    Compiling aws-smithy-xml v0.60.8
[INFO] [stderr]    Compiling brotli-decompressor v2.5.1
[INFO] [stderr]    Compiling heck v0.5.0
[INFO] [stderr]    Compiling anstyle v1.0.8
[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/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-2.0.74/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=f35f7cfa2baa945e -C extra-filename=-0fdcf77f8f608f7c --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-2114f4526b70b808.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-e21d14a66b6e8800.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-772f13ecc3fc189a.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "a8be65013bd867f30407d72ccf510a09386f85e331402e5e75a0a3da48699658", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8be65013bd867f30407d72ccf510a09386f85e331402e5e75a0a3da48699658", kill_on_drop: false }`
[INFO] [stdout] a8be65013bd867f30407d72ccf510a09386f85e331402e5e75a0a3da48699658
