[INFO] fetching crate ys-sniffer 0.2.4...
[INFO] testing ys-sniffer-0.2.4 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate ys-sniffer 0.2.4 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate ys-sniffer 0.2.4
[INFO] finished tweaking crates.io crate ys-sniffer 0.2.4
[INFO] tweaked toml for crates.io crate ys-sniffer 0.2.4 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ys-sniffer 0.2.4 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 ys-sniffer 0.2.4 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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 979b9994ecbaf59e2001d2020dfbd31bbd0bcdd8db44f96e6551dacc1233d594
[INFO] running `Command { std: "docker" "start" "-a" "979b9994ecbaf59e2001d2020dfbd31bbd0bcdd8db44f96e6551dacc1233d594", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "979b9994ecbaf59e2001d2020dfbd31bbd0bcdd8db44f96e6551dacc1233d594", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "979b9994ecbaf59e2001d2020dfbd31bbd0bcdd8db44f96e6551dacc1233d594", kill_on_drop: false }`
[INFO] [stdout] 979b9994ecbaf59e2001d2020dfbd31bbd0bcdd8db44f96e6551dacc1233d594
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 28fa55eb70a6870918b949733f46fb57fb70ecec5486278d10400d2212309f29
[INFO] running `Command { std: "docker" "start" "-a" "28fa55eb70a6870918b949733f46fb57fb70ecec5486278d10400d2212309f29", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling zeroize v1.8.1
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling libloading v0.8.8
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling der v0.7.10
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling lazy_static v1.5.0
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling signature v2.2.0
[INFO] [stderr]    Compiling paste v1.0.15
[INFO] [stderr]    Compiling errno v0.2.8
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling base64 v0.22.1
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling xxhash-rust v0.8.15
[INFO] [stderr]    Compiling syn v2.0.102
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling spki v0.7.3
[INFO] [stderr]    Compiling num-iter v0.1.45
[INFO] [stderr]    Compiling ys-kcp v1.2.1
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/ys-kcp-1.2.1/src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(stmt_expr_attributes)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling pkcs8 v0.10.2
[INFO] [stderr]    Compiling num-bigint-dig v0.8.4
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr] error: could not compile `ys-kcp` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "28fa55eb70a6870918b949733f46fb57fb70ecec5486278d10400d2212309f29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28fa55eb70a6870918b949733f46fb57fb70ecec5486278d10400d2212309f29", kill_on_drop: false }`
[INFO] [stdout] 28fa55eb70a6870918b949733f46fb57fb70ecec5486278d10400d2212309f29