[INFO] fetching crate bare-metrics-gui 0.1.0...
[INFO] checking bare-metrics-gui-0.1.0 against master#e59540968e0c6fc3c37d92a639b83fc8fcee5e81 for pr-114559
[INFO] extracting crate bare-metrics-gui 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate bare-metrics-gui 0.1.0 on toolchain e59540968e0c6fc3c37d92a639b83fc8fcee5e81
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e59540968e0c6fc3c37d92a639b83fc8fcee5e81" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bare-metrics-gui 0.1.0
[INFO] finished tweaking crates.io crate bare-metrics-gui 0.1.0
[INFO] tweaked toml for crates.io crate bare-metrics-gui 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate bare-metrics-gui 0.1.0 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" "+e59540968e0c6fc3c37d92a639b83fc8fcee5e81" "fetch" "--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]  Downloading crates ...
[INFO] [stderr]   Downloaded gio-sys v0.14.0
[INFO] [stderr]   Downloaded quote v1.0.14
[INFO] [stderr]   Downloaded egui-winit v0.15.0
[INFO] [stderr]   Downloaded ab_glyph v0.2.13
[INFO] [stderr]   Downloaded version-compare v0.0.11
[INFO] [stderr]   Downloaded gdk-sys v0.14.0
[INFO] [stderr]   Downloaded clipboard-win v3.1.1
[INFO] [stderr]   Downloaded owned_ttf_parser v0.14.0
[INFO] [stderr]   Downloaded x11-clipboard v0.5.3
[INFO] [stderr]   Downloaded serde_derive v1.0.133
[INFO] [stderr]   Downloaded cairo-sys-rs v0.14.9
[INFO] [stderr]   Downloaded lazy-bytes-cast v5.0.1
[INFO] [stderr]   Downloaded epi v0.15.0
[INFO] [stderr]   Downloaded memmap2 v0.1.0
[INFO] [stderr]   Downloaded atk-sys v0.14.0
[INFO] [stderr]   Downloaded gobject-sys v0.14.0
[INFO] [stderr]   Downloaded copypasta v0.7.1
[INFO] [stderr]   Downloaded wayland-commons v0.28.6
[INFO] [stderr]   Downloaded ttf-parser v0.6.2
[INFO] [stderr]   Downloaded nom v7.1.0
[INFO] [stderr]   Downloaded ttf-parser v0.14.0
[INFO] [stderr]   Downloaded anyhow v1.0.52
[INFO] [stderr]   Downloaded windows_x86_64_gnu v0.29.0
[INFO] [stderr]   Downloaded glutin_glx_sys v0.1.7
[INFO] [stderr]   Downloaded cocoa v0.24.0
[INFO] [stderr]   Downloaded egui v0.15.0
[INFO] [stderr]   Downloaded crossbeam v0.8.1
[INFO] [stderr]   Downloaded owned_ttf_parser v0.6.0
[INFO] [stderr]   Downloaded nix v0.22.0
[INFO] [stderr]   Downloaded windows_i686_gnu v0.29.0
[INFO] [stderr]   Downloaded smithay-client-toolkit v0.15.3
[INFO] [stderr]   Downloaded glium v0.30.2
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.6
[INFO] [stderr]   Downloaded windows v0.29.0
[INFO] [stderr]   Downloaded rfd v0.6.3
[INFO] [stderr]   Downloaded glutin_egl_sys v0.1.5
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.6
[INFO] [stderr]   Downloaded glutin_emscripten_sys v0.1.1
[INFO] [stderr]   Downloaded android_glue v0.2.3
[INFO] [stderr]   Downloaded cfg-expr v0.8.1
[INFO] [stderr]   Downloaded ndk-macro v0.2.0
[INFO] [stderr]   Downloaded libloading v0.6.7
[INFO] [stderr]   Downloaded wayland-egl v0.28.6
[INFO] [stderr]   Downloaded shared_library v0.1.9
[INFO] [stderr]   Downloaded pango-sys v0.14.0
[INFO] [stderr]   Downloaded nix v0.18.0
[INFO] [stderr]   Downloaded epaint v0.15.0
[INFO] [stderr]   Downloaded windows_aarch64_msvc v0.29.0
[INFO] [stderr]   Downloaded windows_i686_msvc v0.29.0
[INFO] [stderr]   Downloaded gimli v0.26.1
[INFO] [stderr]   Downloaded memmap2 v0.3.1
[INFO] [stderr]   Downloaded wayland-cursor v0.29.4
[INFO] [stderr]   Downloaded wayland-protocols v0.29.4
[INFO] [stderr]   Downloaded wayland-commons v0.29.4
[INFO] [stderr]   Downloaded smithay-clipboard v0.6.5
[INFO] [stderr]   Downloaded xcb v0.10.1
[INFO] [stderr]   Downloaded object v0.27.1
[INFO] [stderr]   Downloaded backtrace v0.3.63
[INFO] [stderr]   Downloaded glutin_gles2_sys v0.1.5
[INFO] [stderr]   Downloaded glutin_wgl_sys v0.1.5
[INFO] [stderr]   Downloaded core-video-sys v0.1.4
[INFO] [stderr]   Downloaded num_enum_derive v0.5.6
[INFO] [stderr]   Downloaded num_enum v0.5.6
[INFO] [stderr]   Downloaded ndk v0.3.0
[INFO] [stderr]   Downloaded ndk-glue v0.3.0
[INFO] [stderr]   Downloaded ndk-sys v0.2.2
[INFO] [stderr]   Downloaded rusttype v0.9.2
[INFO] [stderr]   Downloaded calloop v0.6.5
[INFO] [stderr]   Downloaded wayland-sys v0.28.6
[INFO] [stderr]   Downloaded wayland-client v0.28.6
[INFO] [stderr]   Downloaded glutin v0.27.0
[INFO] [stderr]   Downloaded egui_glium v0.15.0
[INFO] [stderr]   Downloaded once_cell v1.9.0
[INFO] [stderr]   Downloaded atomic_refcell v0.1.8
[INFO] [stderr]   Downloaded unicode-segmentation v1.8.0
[INFO] [stderr]   Downloaded strum_macros v0.21.1
[INFO] [stderr]   Downloaded gtk-sys v0.14.0
[INFO] [stderr]   Downloaded windows_x86_64_msvc v0.29.0
[INFO] [stderr]   Downloaded syn v1.0.85
[INFO] [stderr]   Downloaded bare-metrics-reader v0.1.0
[INFO] [stderr]   Downloaded cocoa-foundation v0.1.0
[INFO] [stderr]   Downloaded mio-misc v1.2.2
[INFO] [stderr]   Downloaded proc-macro-crate v1.1.0
[INFO] [stderr]   Downloaded dlib v0.4.2
[INFO] [stderr]   Downloaded libloading v0.7.2
[INFO] [stderr]   Downloaded glib-sys v0.14.0
[INFO] [stderr]   Downloaded core-graphics v0.19.2
[INFO] [stderr]   Downloaded andrew v0.3.1
[INFO] [stderr]   Downloaded winit v0.25.0
[INFO] [stderr]   Downloaded env_logger v0.9.0
[INFO] [stderr]   Downloaded crossbeam-channel v0.5.2
[INFO] [stderr]   Downloaded hdrhistogram v7.4.0
[INFO] [stderr]   Downloaded ole32-sys v0.2.0
[INFO] [stderr]   Downloaded axis-ticks v0.1.0
[INFO] [stderr]   Downloaded bare-metrics-core v0.1.0
[INFO] [stderr]   Downloaded wayland-client v0.29.4
[INFO] [stderr]   Downloaded webbrowser v0.5.5
[INFO] [stderr]   Downloaded osmesa-sys v0.1.2
[INFO] [stderr]   Downloaded proc-macro-crate v0.1.5
[INFO] [stderr]   Downloaded raw-window-handle v0.3.4
[INFO] [stderr]   Downloaded xdg v2.4.0
[INFO] [stderr]   Downloaded wayland-cursor v0.28.6
[INFO] [stderr]   Downloaded wayland-protocols v0.28.6
[INFO] [stderr]   Downloaded smithay-client-toolkit v0.12.3
[INFO] [stderr]   Downloaded scoped-tls v1.0.0
[INFO] [stderr]   Downloaded gdk-pixbuf-sys v0.14.0
[INFO] [stderr]   Downloaded system-deps v3.2.0
[INFO] [stderr]   Downloaded x11-dl v2.19.1
[INFO] [stderr]   Downloaded egui_web v0.15.0
[INFO] [stderr]   Downloaded eframe v0.15.0
[INFO] [stderr]   Downloaded cty v0.2.2
[INFO] [stderr]   Downloaded raw-window-handle v0.4.2
[INFO] [stderr]   Downloaded strum v0.21.0
[INFO] [stderr]   Downloaded wayland-scanner v0.29.4
[INFO] [stderr]   Downloaded crc32fast v1.3.0
[INFO] [stderr]   Downloaded emath v0.15.0
[INFO] [stderr]   Downloaded appdirs v0.2.0
[INFO] [stderr]   Downloaded serde_bare v0.5.0
[INFO] [stderr]   Downloaded quick-xml v0.22.0
[INFO] [stderr]   Downloaded crossbeam-queue v0.3.3
[INFO] [stderr]   Downloaded wayland-scanner v0.28.6
[INFO] [stderr]   Downloaded ab_glyph_rasterizer v0.1.5
[INFO] [stderr]   Downloaded dirs v3.0.2
[INFO] [stderr]   Downloaded takeable-option v0.5.0
[INFO] [stderr]   Downloaded serde v1.0.133
[INFO] [stderr]   Downloaded shell32-sys v0.1.2
[INFO] [stderr]   Downloaded wayland-sys v0.29.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:5c16f4e6c37141f9fef0bc86f7a492d732943053e42aab8461035881e3f53823" "/opt/rustwide/cargo-home/bin/cargo" "+e59540968e0c6fc3c37d92a639b83fc8fcee5e81" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fd8ca650db42e6a6f62c69cd3d1f6de9ebdee396fcd27673c17fb475c348f8b1
[INFO] running `Command { std: "docker" "start" "-a" "fd8ca650db42e6a6f62c69cd3d1f6de9ebdee396fcd27673c17fb475c348f8b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd8ca650db42e6a6f62c69cd3d1f6de9ebdee396fcd27673c17fb475c348f8b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd8ca650db42e6a6f62c69cd3d1f6de9ebdee396fcd27673c17fb475c348f8b1", kill_on_drop: false }`
[INFO] [stdout] fd8ca650db42e6a6f62c69cd3d1f6de9ebdee396fcd27673c17fb475c348f8b1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:5c16f4e6c37141f9fef0bc86f7a492d732943053e42aab8461035881e3f53823" "/opt/rustwide/cargo-home/bin/cargo" "+e59540968e0c6fc3c37d92a639b83fc8fcee5e81" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8ebaa8983f72a64bd64ae31028a89b84cdc17e633154f9ef666565a184f7a4ee
[INFO] running `Command { std: "docker" "start" "-a" "8ebaa8983f72a64bd64ae31028a89b84cdc17e633154f9ef666565a184f7a4ee", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling syn v1.0.85
[INFO] [stderr]    Compiling xml-rs v0.8.4
[INFO] [stderr]    Compiling anyhow v1.0.52
[INFO] [stderr]    Compiling quote v1.0.14
[INFO] [stderr]    Compiling serde v1.0.133
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling smallvec v1.7.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling itertools v0.10.3
[INFO] [stderr]    Compiling cfg-expr v0.8.1
[INFO] [stderr]    Compiling version-compare v0.0.11
[INFO] [stderr]    Compiling strum v0.21.0
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]     Checking libloading v0.7.2
[INFO] [stderr]     Checking dlib v0.5.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling nom v7.1.0
[INFO] [stderr]     Checking downcast-rs v1.2.0
[INFO] [stderr]     Checking minimal-lexical v0.2.1
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.6
[INFO] [stderr]    Compiling wayland-scanner v0.28.6
[INFO] [stderr]    Compiling khronos_api v3.1.0
[INFO] [stderr]    Compiling wayland-sys v0.28.6
[INFO] [stderr]    Compiling wayland-scanner v0.29.4
[INFO] [stderr]     Checking ab_glyph_rasterizer v0.1.5
[INFO] [stderr]    Compiling gl_generator v0.14.0
[INFO] [stderr]     Checking nix v0.20.0
[INFO] [stderr]    Compiling wayland-sys v0.29.4
[INFO] [stderr]     Checking crossbeam-channel v0.5.2
[INFO] [stderr]     Checking xcursor v0.3.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.6
[INFO] [stderr]     Checking nix v0.22.0
[INFO] [stderr]    Compiling wayland-client v0.28.6
[INFO] [stderr]     Checking dirs-sys v0.3.6
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]    Compiling crossbeam-queue v0.3.3
[INFO] [stderr]     Checking ttf-parser v0.6.2
[INFO] [stderr]    Compiling wayland-client v0.29.4
[INFO] [stderr]     Checking dirs v3.0.2
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling wayland-protocols v0.28.6
[INFO] [stderr]    Compiling x11-dl v2.19.1
[INFO] [stderr]     Checking owned_ttf_parser v0.6.0
[INFO] [stderr]     Checking cty v0.2.2
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]     Checking raw-window-handle v0.4.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling strum_macros v0.21.1
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking wayland-commons v0.28.6
[INFO] [stderr]     Checking rusttype v0.9.2
[INFO] [stderr]    Compiling quick-xml v0.22.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking wayland-commons v0.29.4
[INFO] [stderr]     Checking xdg v2.4.0
[INFO] [stderr]    Compiling wayland-protocols v0.29.4
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking libloading v0.6.7
[INFO] [stderr]     Checking ttf-parser v0.14.0
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]     Checking dlib v0.4.2
[INFO] [stderr]     Checking andrew v0.3.1
[INFO] [stderr]     Checking wayland-cursor v0.28.6
[INFO] [stderr]    Compiling system-deps v3.2.0
[INFO] [stderr]    Compiling xcb v0.10.1
[INFO] [stderr]     Checking crossbeam v0.8.1
[INFO] [stderr]     Checking lock_api v0.4.5
[INFO] [stderr]     Checking calloop v0.6.5
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking memmap2 v0.1.0
[INFO] [stderr]    Compiling smithay-client-toolkit v0.15.3
[INFO] [stderr]    Compiling winit v0.25.0
[INFO] [stderr]    Compiling glib-sys v0.14.0
[INFO] [stderr]    Compiling gobject-sys v0.14.0
[INFO] [stderr]    Compiling gio-sys v0.14.0
[INFO] [stderr]    Compiling cairo-sys-rs v0.14.9
[INFO] [stderr]    Compiling pango-sys v0.14.0
[INFO] [stderr]    Compiling gdk-pixbuf-sys v0.14.0
[INFO] [stderr]     Checking owned_ttf_parser v0.14.0
[INFO] [stderr]    Compiling serde_derive v1.0.133
[INFO] [stderr]     Checking ab_glyph v0.2.13
[INFO] [stderr]    Compiling atk-sys v0.14.0
[INFO] [stderr]    Compiling gdk-sys v0.14.0
[INFO] [stderr]     Checking mio-misc v1.2.2
[INFO] [stderr]     Checking ahash v0.7.6
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking wayland-cursor v0.29.4
[INFO] [stderr]     Checking raw-window-handle v0.3.4
[INFO] [stderr]    Compiling glutin_glx_sys v0.1.7
[INFO] [stderr]    Compiling glutin_egl_sys v0.1.5
[INFO] [stderr]     Checking memmap2 v0.3.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking emath v0.15.0
[INFO] [stderr]     Checking nohash-hasher v0.2.0
[INFO] [stderr]     Checking atomic_refcell v0.1.8
[INFO] [stderr]    Compiling crc32fast v1.3.0
[INFO] [stderr]     Checking epaint v0.15.0
[INFO] [stderr]    Compiling backtrace v0.3.63
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]     Checking osmesa-sys v0.1.2
[INFO] [stderr]     Checking egui v0.15.0
[INFO] [stderr]     Checking x11-clipboard v0.5.3
[INFO] [stderr]    Compiling gtk-sys v0.14.0
[INFO] [stderr]     Checking wayland-egl v0.28.6
[INFO] [stderr]    Compiling glium v0.30.2
[INFO] [stderr]     Checking object v0.27.1
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]     Checking epi v0.15.0
[INFO] [stderr]     Checking flate2 v1.0.22
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]     Checking takeable-option v0.5.0
[INFO] [stderr]     Checking webbrowser v0.5.5
[INFO] [stderr]     Checking hdrhistogram v7.4.0
[INFO] [stderr]    Compiling rfd v0.6.3
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking smithay-client-toolkit v0.12.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking axis-ticks v0.1.0
[INFO] [stderr]     Checking appdirs v0.2.0
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]     Checking glutin v0.27.0
[INFO] [stderr]     Checking smithay-clipboard v0.6.5
[INFO] [stderr]     Checking copypasta v0.7.1
[INFO] [stderr]     Checking egui-winit v0.15.0
[INFO] [stderr]     Checking serde_bare v0.5.0
[INFO] [stderr]     Checking ron v0.7.0
[INFO] [stderr]     Checking bare-metrics-core v0.1.0
[INFO] [stderr]     Checking bare-metrics-reader v0.1.0
[INFO] [stderr]     Checking egui_glium v0.15.0
[INFO] [stderr]     Checking eframe v0.15.0
[INFO] [stderr]     Checking bare-metrics-gui v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `Ui::button` that must be used
[INFO] [stdout]   --> src/graph.rs:95:17
[INFO] [stdout]    |
[INFO] [stdout] 95 |                 ui.button("Blah");
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: You should check if the user clicked this with `if ui.button(…).clicked() { … } 
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 95 |                 let _ = ui.button("Blah");
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Ui::button` that must be used
[INFO] [stdout]   --> src/graph.rs:95:17
[INFO] [stdout]    |
[INFO] [stdout] 95 |                 ui.button("Blah");
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: You should check if the user clicked this with `if ui.button(…).clicked() { … } 
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 95 |                 let _ = ui.button("Blah");
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 26.78s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: quick-xml v0.22.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "8ebaa8983f72a64bd64ae31028a89b84cdc17e633154f9ef666565a184f7a4ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ebaa8983f72a64bd64ae31028a89b84cdc17e633154f9ef666565a184f7a4ee", kill_on_drop: false }`
[INFO] [stdout] 8ebaa8983f72a64bd64ae31028a89b84cdc17e633154f9ef666565a184f7a4ee
