[INFO] fetching crate winit-modular 0.1.1...
[INFO] testing winit-modular-0.1.1 against try#2440211fe03bc45c89b6dc1a3df18382ce91e32b for pr-146098-1
[INFO] extracting crate winit-modular 0.1.1 into /workspace/builds/worker-6-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-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate winit-modular 0.1.1 on toolchain 2440211fe03bc45c89b6dc1a3df18382ce91e32b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "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" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 183 packages to latest compatible versions
[INFO] [stderr]       Adding env_logger v0.9.3 (available: v0.11.8)
[INFO] [stderr]       Adding flume v0.10.14 (available: v0.11.1)
[INFO] [stderr]       Adding winit v0.26.1 (available: v0.30.12)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "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" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bff1793e41d791b58b2e159093d6942801b7df1fb937291b9559e814cad66271
[INFO] running `Command { std: "docker" "start" "-a" "bff1793e41d791b58b2e159093d6942801b7df1fb937291b9559e814cad66271", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bff1793e41d791b58b2e159093d6942801b7df1fb937291b9559e814cad66271", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bff1793e41d791b58b2e159093d6942801b7df1fb937291b9559e814cad66271", kill_on_drop: false }`
[INFO] [stdout] bff1793e41d791b58b2e159093d6942801b7df1fb937291b9559e814cad66271
[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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7d2af0466abc49e50a227f043a9c6237f2ee9482ae65305aaf8d0c314aad8940
[INFO] running `Command { std: "docker" "start" "-a" "7d2af0466abc49e50a227f043a9c6237f2ee9482ae65305aaf8d0c314aad8940", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.176
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling xml-rs v0.8.27
[INFO] [stderr]    Compiling libloading v0.8.9
[INFO] [stderr]    Compiling wayland-sys v0.29.5
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]    Compiling smithay-client-toolkit v0.15.4
[INFO] [stderr]    Compiling instant v0.1.13
[INFO] [stderr]    Compiling cty v0.2.2
[INFO] [stderr]    Compiling winit v0.26.1
[INFO] [stderr]    Compiling raw-window-handle v0.4.3
[INFO] [stderr]    Compiling dlib v0.5.2
[INFO] [stderr]    Compiling wayland-scanner v0.29.5
[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 memmap2 v0.3.1
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling x11-dl v2.21.0
[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 flume v0.10.14
[INFO] [stderr]    Compiling wayland-commons v0.29.5
[INFO] [stderr]    Compiling calloop v0.9.3
[INFO] [stderr]    Compiling wayland-cursor v0.29.5
[INFO] [stderr]    Compiling winit-modular v0.1.1 (/opt/rustwide/workdir)
[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] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `winit-modular` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "7d2af0466abc49e50a227f043a9c6237f2ee9482ae65305aaf8d0c314aad8940", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d2af0466abc49e50a227f043a9c6237f2ee9482ae65305aaf8d0c314aad8940", kill_on_drop: false }`
[INFO] [stdout] 7d2af0466abc49e50a227f043a9c6237f2ee9482ae65305aaf8d0c314aad8940