[INFO] fetching crate wind-core 0.1.1...
[INFO] testing wind-core-0.1.1 against 1.100.0-beta.1 for beta-1.100-2
[INFO] extracting crate wind-core 0.1.1 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate wind-core 0.1.1
[INFO] finished tweaking crates.io crate wind-core 0.1.1
[INFO] tweaked toml for crates.io crate wind-core 0.1.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate wind-core 0.1.1 on toolchain 1.100.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate wind-core 0.1.1 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" "+1.100.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3111399a4047eeb3a02b7a90e478d715f38a8c6669b5c4b49d30a17385265909" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] b58bf1d76d4af64756cc3703a808db45d49b4db1da89ad752738b798d6273d45
[INFO] running `Command { std: "docker" "start" "b58bf1d76d4af64756cc3703a808db45d49b4db1da89ad752738b798d6273d45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b58bf1d76d4af64756cc3703a808db45d49b4db1da89ad752738b798d6273d45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "b58bf1d76d4af64756cc3703a808db45d49b4db1da89ad752738b798d6273d45" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b58bf1d76d4af64756cc3703a808db45d49b4db1da89ad752738b798d6273d45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "b58bf1d76d4af64756cc3703a808db45d49b4db1da89ad752738b798d6273d45" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]    Compiling pin-project-lite v0.2.16
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling zerocopy v0.8.26
[INFO] [stderr]    Compiling slab v0.4.11
[INFO] [stderr]    Compiling cfg_aliases v0.2.1
[INFO] [stderr]    Compiling cfg-if v1.0.3
[INFO] [stderr]    Compiling once_cell v1.21.3
[INFO] [stderr]    Compiling futures-sink v0.3.31
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling futures-io v0.3.31
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling bytes v1.10.1
[INFO] [stderr]    Compiling memchr v2.7.5
[INFO] [stderr]    Compiling futures-task v0.3.31
[INFO] [stderr]    Compiling thiserror v2.0.16
[INFO] [stderr]    Compiling log v0.4.28
[INFO] [stderr]    Compiling quinn-udp v0.5.14
[INFO] [stderr]    Compiling tinyvec_macros v0.1.1
[INFO] [stderr]    Compiling tinyvec v1.10.0
[INFO] [stderr]    Compiling quinn v0.11.9
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling eyre v0.6.12
[INFO] [stderr]    Compiling lru-slab v0.1.2
[INFO] [stderr]    Compiling rustc-hash v2.1.1
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling indenter v0.3.4
[INFO] [stderr]    Compiling const-str v0.7.0
[INFO] [stderr]    Compiling tracing-core v0.1.34
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling socket2 v0.6.0
[INFO] [stderr]    Compiling mio v1.0.4
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling rand_core v0.9.3
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stderr]    Compiling rand v0.9.2
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling tracing-attributes v0.1.30
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling thiserror-impl v2.0.16
[INFO] [stderr]    Compiling pin-project-internal v1.1.10
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling tokio v1.47.1
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling pin-project v1.1.10
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling quinn-proto v0.11.13
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling tokio-util v0.7.16
[INFO] [stderr]    Compiling wind-core v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(impl_trait_in_fn_trait_return)]
[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 `wind-core` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "b58bf1d76d4af64756cc3703a808db45d49b4db1da89ad752738b798d6273d45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b58bf1d76d4af64756cc3703a808db45d49b4db1da89ad752738b798d6273d45", kill_on_drop: false }`
[INFO] [stdout] b58bf1d76d4af64756cc3703a808db45d49b4db1da89ad752738b798d6273d45
