Getting a stacktrace when trying to use the font Berkeley Mono

[drhayes]

Here's what I'm trying to do:

❯ echo "console.log('hello!');" | RUST_BACKTRACE=1 silicon -o main.png -l javascript -f 'Berkeley Mono=16'
[error] Error occurs when load font `Berkeley Mono`: Font error: parse error
thread 'main' panicked at /home/drhayes/.cargo/registry/src/index.crates.io-6f17d22bba15001f/silicon-0.5.2/src/font.rs:214:14:
called `Option::unwrap()` on a `None` value
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: core::panicking::panic
             at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panicking.rs:144:5
   3: silicon::formatter::ImageFormatter::format
   4: silicon::main
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

I can run with a more verbose backtrace if that would help.

If I use a different font like Ubuntu Mono or JetBrains Mono it works just fine.

"Berkeley Mono" appears when I run silicon --list-fonts.

Here is where I got the font: https://berkeleygraphics.com/typefaces/berkeley-mono/