[INFO] fetching crate unity-version-manager 3.5.0...
[INFO] testing unity-version-manager-3.5.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate unity-version-manager 3.5.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate unity-version-manager 3.5.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate unity-version-manager 3.5.0
[INFO] tweaked toml for crates.io crate unity-version-manager 3.5.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate unity-version-manager 3.5.0 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate unity-version-manager 3.5.0 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-2025-09-21" "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" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 22f437bbf54964da09fb779ab6031af5eed7c0b0892dc1589855beb4928cff89
[INFO] running `Command { std: "docker" "start" "-a" "22f437bbf54964da09fb779ab6031af5eed7c0b0892dc1589855beb4928cff89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "22f437bbf54964da09fb779ab6031af5eed7c0b0892dc1589855beb4928cff89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22f437bbf54964da09fb779ab6031af5eed7c0b0892dc1589855beb4928cff89", kill_on_drop: false }`
[INFO] [stdout] 22f437bbf54964da09fb779ab6031af5eed7c0b0892dc1589855beb4928cff89
[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=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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9342c2d10da41ea651c8838761846b5aac7a2c57fa244dcfaf7344814c38ec0b
[INFO] running `Command { std: "docker" "start" "-a" "9342c2d10da41ea651c8838761846b5aac7a2c57fa244dcfaf7344814c38ec0b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]    Compiling find-msvc-tools v0.1.1
[INFO] [stderr]    Compiling serde_core v1.0.223
[INFO] [stderr]    Compiling foldhash v0.1.5
[INFO] [stderr]    Compiling serde v1.0.223
[INFO] [stderr]    Compiling bitflags v2.9.4
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling utf8parse v0.2.2
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling anstyle-query v1.1.4
[INFO] [stderr]    Compiling thiserror v2.0.16
[INFO] [stderr]    Compiling colorchoice v1.0.4
[INFO] [stderr]    Compiling anstyle v1.0.11
[INFO] [stderr]    Compiling rustls v0.23.31
[INFO] [stderr]    Compiling is_terminal_polyfill v1.70.1
[INFO] [stderr]    Compiling hashbrown v0.15.5
[INFO] [stderr]    Compiling anstyle-parse v0.2.7
[INFO] [stderr]    Compiling regex-automata v0.4.10
[INFO] [stderr]    Compiling clap_lex v0.7.5
[INFO] [stderr]    Compiling strsim v0.11.1
[INFO] [stderr]    Compiling anyhow v1.0.99
[INFO] [stderr]    Compiling sha2 v0.10.9
[INFO] [stderr]    Compiling rustix v1.1.2
[INFO] [stderr]    Compiling anstream v0.6.20
[INFO] [stderr]    Compiling serde_json v1.0.143
[INFO] [stderr]    Compiling linux-raw-sys v0.11.0
[INFO] [stderr]    Compiling nom v8.0.0
[INFO] [stderr]    Compiling semver v1.0.27
[INFO] [stderr]    Compiling crc32fast v1.5.0
[INFO] [stderr]    Compiling clap_builder v4.5.47
[INFO] [stderr]    Compiling time-macros v0.2.24
[INFO] [stderr]    Compiling indexmap v2.11.1
[INFO] [stderr]    Compiling deranged v0.5.3
[INFO] [stderr]    Compiling sha-1 v0.10.1
[INFO] [stderr]    Compiling zstd-safe v7.2.4
[INFO] [stderr]    Compiling xxhash-rust v0.8.15
[INFO] [stderr]    Compiling ordered-float v5.0.0
[INFO] [stderr]    Compiling inout v0.1.4
[INFO] [stderr]    Compiling indoc v2.0.6
[INFO] [stderr]    Compiling zlib-rs v0.5.2
[INFO] [stderr]    Compiling bit-vec v0.8.0
[INFO] [stderr]    Compiling humantime v2.3.0
[INFO] [stderr]    Compiling jobserver v0.1.34
[INFO] [stderr]    Compiling mio v1.0.4
[INFO] [stderr]    Compiling socket2 v0.6.0
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling cc v1.2.36
[INFO] [stderr]    Compiling rand_core v0.9.3
[INFO] [stderr]    Compiling dirs-2 v3.0.1
[INFO] [stderr]    Compiling wait-timeout v0.2.1
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling tokio v1.47.1
[INFO] [stderr]    Compiling crc-catalog v2.4.0
[INFO] [stderr]    Compiling fixedbitset v0.5.7
[INFO] [stderr]    Compiling crc v3.3.0
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stderr]    Compiling rand v0.9.2
[INFO] [stderr]    Compiling rand_xorshift v0.4.0
[INFO] [stderr]    Compiling bit-set v0.8.0
[INFO] [stderr]    Compiling tempfile v3.22.0
[INFO] [stderr]    Compiling time v0.3.43
[INFO] [stderr]    Compiling regex v1.11.2
[INFO] [stderr]    Compiling rusty-fork v0.3.0
[INFO] [stderr]    Compiling petgraph v0.8.2
[INFO] [stderr]    Compiling itertools v0.14.0
[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/beta-2025-09-21-x86_64-unknown-linux-gnu/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-2.0.106/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=76f977ec97765af5 -C extra-filename=-ad15d33abd6af0a0 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-3961f8809e272ccb.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-8b6071bff2f2593c.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-9ad4622e9362cad2.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" "9342c2d10da41ea651c8838761846b5aac7a2c57fa244dcfaf7344814c38ec0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9342c2d10da41ea651c8838761846b5aac7a2c57fa244dcfaf7344814c38ec0b", kill_on_drop: false }`
[INFO] [stdout] 9342c2d10da41ea651c8838761846b5aac7a2c57fa244dcfaf7344814c38ec0b