[INFO] fetching crate gargoyle-feed-monitor 0.1.3...
[INFO] testing gargoyle-feed-monitor-0.1.3 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate gargoyle-feed-monitor 0.1.3 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate gargoyle-feed-monitor 0.1.3
[INFO] finished tweaking crates.io crate gargoyle-feed-monitor 0.1.3
[INFO] tweaked toml for crates.io crate gargoyle-feed-monitor 0.1.3 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate gargoyle-feed-monitor 0.1.3 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 gargoyle-feed-monitor 0.1.3 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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] f4103e8e63dc51baf17cfa3f7ec75d0bc94441f5a9b2f41c9481d86638a6bf10
[INFO] running `Command { std: "docker" "start" "-a" "f4103e8e63dc51baf17cfa3f7ec75d0bc94441f5a9b2f41c9481d86638a6bf10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4103e8e63dc51baf17cfa3f7ec75d0bc94441f5a9b2f41c9481d86638a6bf10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4103e8e63dc51baf17cfa3f7ec75d0bc94441f5a9b2f41c9481d86638a6bf10", kill_on_drop: false }`
[INFO] [stdout] f4103e8e63dc51baf17cfa3f7ec75d0bc94441f5a9b2f41c9481d86638a6bf10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 7a20d89532986348aa493a368cce937ccc4b76f949d5728105b05c4815d67522
[INFO] running `Command { std: "docker" "start" "-a" "7a20d89532986348aa493a368cce937ccc4b76f949d5728105b05c4815d67522", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.154
[INFO] [stderr]    Compiling openssl-sys v0.9.102
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling http v1.1.0
[INFO] [stderr]    Compiling futures-io v0.3.30
[INFO] [stderr]    Compiling syn v2.0.63
[INFO] [stderr]    Compiling futures-task v0.3.30
[INFO] [stderr]    Compiling openssl v0.10.64
[INFO] [stderr]    Compiling hashbrown v0.14.5
[INFO] [stderr]    Compiling serde v1.0.201
[INFO] [stderr]    Compiling futures-util v0.3.30
[INFO] [stderr]    Compiling native-tls v0.2.11
[INFO] [stderr]    Compiling futures-channel v0.3.30
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling smallvec v1.13.2
[INFO] [stderr]    Compiling either v1.11.0
[INFO] [stderr]    Compiling rustls-pki-types v1.7.0
[INFO] [stderr]    Compiling rayon v1.10.0
[INFO] [stderr]    Compiling indexmap v2.2.6
[INFO] [stderr]    Compiling socket2 v0.5.7
[INFO] [stderr]    Compiling mio v0.8.11
[INFO] [stderr]    Compiling num_cpus v1.16.0
[INFO] [stderr]    Compiling http-body v1.0.0
[INFO] [stderr]    Compiling tokio v1.37.0
[INFO] [stderr]    Compiling http-body-util v0.1.1
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling uuid v1.8.0
[INFO] [stderr]    Compiling chrono v0.4.38
[INFO] [stderr]    Compiling rustls-pemfile v2.1.2
[INFO] [stderr]    Compiling quick-xml v0.31.0
[INFO] [stderr]    Compiling ipnet v2.9.0
[INFO] [stderr]    Compiling siphasher v1.0.1
[INFO] [stderr]    Compiling gargoyle v0.1.5
[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/gargoyle-0.1.5/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(doc_auto_cfg)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `gargoyle` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "7a20d89532986348aa493a368cce937ccc4b76f949d5728105b05c4815d67522", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a20d89532986348aa493a368cce937ccc4b76f949d5728105b05c4815d67522", kill_on_drop: false }`
[INFO] [stdout] 7a20d89532986348aa493a368cce937ccc4b76f949d5728105b05c4815d67522