[INFO] fetching crate winit-modular 0.1.1...
[INFO] testing winit-modular-0.1.1 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate winit-modular 0.1.1 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate winit-modular 0.1.1
[INFO] finished tweaking crates.io crate winit-modular 0.1.1
[INFO] tweaked toml for crates.io crate winit-modular 0.1.1 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate winit-modular 0.1.1 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 164 packages to latest compatible versions
[INFO] [stderr]       Adding env_logger v0.9.3 (available: v0.11.10)
[INFO] [stderr]       Adding flume v0.10.14 (available: v0.12.0)
[INFO] [stderr]       Adding winit v0.26.1 (available: v0.30.13)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 17800dbe7a70931f908c29a030c97a53dd5282e8f9e03d07bc9b9659088973f5
[INFO] running `Command { std: "docker" "start" "-a" "17800dbe7a70931f908c29a030c97a53dd5282e8f9e03d07bc9b9659088973f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "17800dbe7a70931f908c29a030c97a53dd5282e8f9e03d07bc9b9659088973f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17800dbe7a70931f908c29a030c97a53dd5282e8f9e03d07bc9b9659088973f5", kill_on_drop: false }`
[INFO] [stdout] 17800dbe7a70931f908c29a030c97a53dd5282e8f9e03d07bc9b9659088973f5
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b2b8a06b66472d8cb2d7b1c56da0c0b9b9b4f7c19dfd16784db363b3c19b6c6
[INFO] running `Command { std: "docker" "start" "-a" "6b2b8a06b66472d8cb2d7b1c56da0c0b9b9b4f7c19dfd16784db363b3c19b6c6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.186
[INFO] [stderr]    Compiling pkg-config v0.3.33
[INFO] [stderr]    Compiling futures-sink v0.3.32
[INFO] [stderr]    Compiling libloading v0.8.9
[INFO] [stderr]    Compiling downcast-rs v1.2.1
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]    Compiling instant v0.1.13
[INFO] [stderr]    Compiling xcursor v0.3.10
[INFO] [stderr]    Compiling winit v0.26.1
[INFO] [stderr]    Compiling cty v0.2.2
[INFO] [stderr]    Compiling wayland-scanner v0.29.5
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling futures-channel v0.3.32
[INFO] [stderr]    Compiling raw-window-handle v0.4.3
[INFO] [stderr]    Compiling dlib v0.5.3
[INFO] [stderr]    Compiling wayland-sys v0.29.5
[INFO] [stderr]    Compiling x11-dl v2.21.0
[INFO] [stderr]    Compiling smithay-client-toolkit v0.15.4
[INFO] [stderr]    Compiling wayland-client v0.29.5
[INFO] [stderr]    Compiling wayland-protocols v0.29.5
[INFO] [stderr]    Compiling nix v0.24.3
[INFO] [stderr]    Compiling nix v0.22.3
[INFO] [stderr]    Compiling getrandom v0.2.17
[INFO] [stderr]    Compiling memmap2 v0.3.1
[INFO] [stderr]    Compiling mio v0.8.11
[INFO] [stderr]    Compiling nanorand v0.7.0
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling futures-macro v0.3.32
[INFO] [stderr]    Compiling pin-project-internal v1.1.11
[INFO] [stderr]    Compiling wayland-commons v0.29.5
[INFO] [stderr]    Compiling futures-util v0.3.32
[INFO] [stderr]    Compiling pin-project v1.1.11
[INFO] [stderr]    Compiling flume v0.10.14
[INFO] [stderr]    Compiling wayland-cursor v0.29.5
[INFO] [stderr]    Compiling calloop v0.9.3
[INFO] [stderr]    Compiling futures-executor v0.3.32
[INFO] [stderr]    Compiling futures v0.3.32
[INFO] [stderr]    Compiling winit-modular 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:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(drain_filter)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `drain_filter`
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(drain_filter)]
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] help: there is a feature with a similar name: `option_filter`
[INFO] [stdout]   |
[INFO] [stdout] 2 - #![feature(drain_filter)]
[INFO] [stdout] 2 + #![feature(option_filter)]
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `winit-modular` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "6b2b8a06b66472d8cb2d7b1c56da0c0b9b9b4f7c19dfd16784db363b3c19b6c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b2b8a06b66472d8cb2d7b1c56da0c0b9b9b4f7c19dfd16784db363b3c19b6c6", kill_on_drop: false }`
[INFO] [stdout] 6b2b8a06b66472d8cb2d7b1c56da0c0b9b9b4f7c19dfd16784db363b3c19b6c6
