Error parsing "18x18ja" TTF/OTF font file: InvalidFont

[savchenko]

Release builds from master and v0.2.1 error with:

./bite 
MESA-INTEL: warning: Performance support disabled, consider sysctl dev.i915.perf_stream_paranoid=0

thread 'main' panicked at /home/lbr/.cargo/registry/src/index.crates.io-6f17d22bba15001f/epaint-0.27.2/src/text/fonts.rs:203:27:
Error parsing "18x18ja" TTF/OTF font file: InvalidFont

Backtrace:

stack backtrace:
   0: rust_begin_unwind
             at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:645:5
   1: core::panicking::panic_fmt
             at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panicking.rs:72:14
   2: epaint::text::fonts::ab_glyph_font_from_font_data::{{closure}}
             at /home/user/.cargo/registry/src/index.crates.io-6f17d22bba15001f/epaint-0.27.2/src/text/fonts.rs:203:27
   3: core::result::Result<T,E>::unwrap_or_else
             at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/result.rs:1426:23
   4: epaint::text::fonts::ab_glyph_font_from_font_data
             at /home/user/.cargo/registry/src/index.crates.io-6f17d22bba15001f/epaint-0.27.2/src/text/fonts.rs:203:6
   5: epaint::text::fonts::FontImplCache::new::{{closure}}
             at /home/user/.cargo/registry/src/index.crates.io-6f17d22bba15001f/epaint-0.27.2/src/text/fonts.rs:752:32
   6: core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &mut F>::call_once
             at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:305:13
   7: core::option::Option<T>::map
             at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/option.rs:1072:29
   8: <core::iter::adapters::map::Map<I,F> as core::iter::traits::iterator::Iterator>::next
             at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/iter/adapters/map.rs:104:26
   9: <alloc::vec::Vec<T> as alloc::vec::spec_from_iter_nested::SpecFromIterNested<T,I>>::from_iter
             at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/alloc/src/vec/spec_from_iter_nested.rs:26:32
  10: <alloc::vec::Vec<T> as alloc::vec::spec_from_iter::SpecFromIter<T,I>>::from_iter
             at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/alloc/src/vec/spec_from_iter.rs:33:9
  11: <alloc::vec::Vec<T> as core::iter::traits::collect::FromIterator<T>>::from_iter
             at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/alloc/src/vec/mod.rs:2791:9
  12: core::iter::traits::iterator::Iterator::collect
             at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/iter/traits/iterator.rs:2054:9
  13: <alloc::collections::btree::map::BTreeMap<K,V> as core::iter::traits::collect::FromIterator<(K,V)>>::from_iter
             at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/alloc/src/collections/btree/map.rs:2221:34
  14: core::iter::traits::iterator::Iterator::collect
             at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/iter/traits/iterator.rs:2054:9
  15: epaint::text::fonts::FontImplCache::new
             at /home/user/.cargo/registry/src/index.crates.io-6f17d22bba15001f/epaint-0.27.2/src/text/fonts.rs:755:14
  16: epaint::text::fonts::FontsImpl::new
             at /home/user/.cargo/registry/src/index.crates.io-6f17d22bba15001f/epaint-0.27.2/src/text/fonts.rs:617:13
  17: epaint::text::fonts::Fonts::new
             at /home/user/.cargo/registry/src/index.crates.io-6f17d22bba15001f/epaint-0.27.2/src/text/fonts.rs:383:20
  18: egui::context::ContextImpl::update_fonts_mut::{{closure}}
             at /home/user/.cargo/registry/src/index.crates.io-6f17d22bba15001f/egui-0.27.2/src/context.rs:546:17
  19: alloc::collections::btree::map::entry::Entry<K,V,A>::or_insert_with
             at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/alloc/src/collections/btree/map/entry.rs:187:43
  20: egui::context::ContextImpl::update_fonts_mut
             at /home/user/.cargo/registry/src/index.crates.io-6f17d22bba15001f/egui-0.27.2/src/context.rs:537:21
  21: egui::context::ContextImpl::begin_frame_mut
             at /home/user/.cargo/registry/src/index.crates.io-6f17d22bba15001f/egui-0.27.2/src/context.rs:516:9
  22: egui::context::Context::begin_frame::{{closure}}
             at /home/user/.cargo/registry/src/index.crates.io-6f17d22bba15001f/egui-0.27.2/src/context.rs:772:26
  23: egui::context::Context::write
             at /home/user/.cargo/registry/src/index.crates.io-6f17d22bba15001f/egui-0.27.2/src/context.rs:718:9
  24: egui::context::Context::begin_frame
             at /home/user/.cargo/registry/src/index.crates.io-6f17d22bba15001f/egui-0.27.2/src/context.rs:772:9
  25: gui::winit_backend::Platform::begin_frame
             at /home/user/.shares/user_code/bite/gui/src/winit_backend.rs:338:9
  26: gui::wgpu_backend::Instance::draw
             at /home/user/.shares/user_code/bite/gui/src/wgpu_backend/mod.rs:140:9
  27: gui::UI::run::{{closure}}
             at /home/user/.shares/user_code/bite/gui/src/lib.rs:231:38
  28: core::ops::function::impls::<impl core::ops::function::FnMut<A> for &mut F>::call_mut
             at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:294:13
  29: winit::platform_impl::platform::wayland::event_loop::EventLoop<T>::single_iteration
             at /home/user/.cargo/registry/src/index.crates.io-6f17d22bba15001f/winit-0.29.10/src/platform_impl/linux/wayland/event_loop/mod.rs:504:17
  30: winit::platform_impl::platform::wayland::event_loop::EventLoop<T>::pump_events
             at /home/user/.cargo/registry/src/index.crates.io-6f17d22bba15001f/winit-0.29.10/src/platform_impl/linux/wayland/event_loop/mod.rs:231:13
  31: winit::platform_impl::platform::wayland::event_loop::EventLoop<T>::run_on_demand
             at /home/user/.cargo/registry/src/index.crates.io-6f17d22bba15001f/winit-0.29.10/src/platform_impl/linux/wayland/event_loop/mod.rs:201:19
  32: winit::platform_impl::platform::EventLoop<T>::run_on_demand
             at /home/user/.cargo/registry/src/index.crates.io-6f17d22bba15001f/winit-0.29.10/src/platform_impl/linux/mod.rs:821:56
  33: winit::platform_impl::platform::EventLoop<T>::run
             at /home/user/.cargo/registry/src/index.crates.io-6f17d22bba15001f/winit-0.29.10/src/platform_impl/linux/mod.rs:814:9
  34: winit::event_loop::EventLoop<T>::run
             at /home/user/.cargo/registry/src/index.crates.io-6f17d22bba15001f/winit-0.29.10/src/event_loop.rs:249:25
  35: gui::UI::run
             at /home/user/.shares/user_code/bite/gui/src/lib.rs:211:28
  36: bite::main
             at /home/user/.shares/user_code/bite/src/main.rs:21:9
  37: core::ops::function::FnOnce::call_once
             at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5

[WINSDK]

Looks to be loading a cjk font. On linux this would be loading /usr/share/fonts/opentype/noto/NotoSansCJK-Regular.ttc.
If you do have this font, could you send it. Might just be an unsupported font.