Turbopack error when using roboto flex font

[Arctomachine]

Link to the code that reproduces this issue

https://github.com/Arctomachine/next-font-roboto-flex-bug

To Reproduce

Start dev server and open page in browser

Current vs. Expected behavior

Current: gives error 500 when following is present. Error happens when constant is assigned. Other fonts from roboto family work

import { Roboto_Flex } from 'next/font/google'

const robotoFlex = Roboto_Flex({
  subsets: ['latin'],
})

Expected: works with this font

Provide environment information

Operating System:
  Platform: win32
  Arch: x64
  Version: Windows 10 Pro
  Available memory (MB): 32720
  Available CPU cores: 12
Binaries:
  Node: 20.17.0
  npm: 10.8.2
  Yarn: N/A
  pnpm: N/A
Relevant Packages:
  next: 15.1.1-canary.23 // Latest available version is detected (15.1.1-canary.23).
  eslint-config-next: N/A
  react: 19.0.0
  react-dom: 19.0.0
  typescript: 5.3.3
Next.js Config:
  output: N/A

Which area(s) are affected? (Select all that apply)

Font (next/font), Turbopack

Which stage(s) are affected? (Select all that apply)

next dev (local)

Additional context

No response

[a3har]

Tried to replicate this here but unable to do so.

Link: https://codesandbox.io/p/github/a3har/next-font-roboto-flex-bug/master?import=true

Could you please replicate this issue in a sandbox so that I can take a better look ?

[Arctomachine]

That is strange. Error should be triggered the moment constant is assigned value.
Could be something related to environment then? Since I encounter it locally on windows, but on linux sandbox it works.
Did you try it locally too, including windows?