Crunch fails to read the Xonotic JPG file `flr_tmtl_bump.jpg`

[illwieckz]

Crunch fails to read a Xonotic JPG:

• forge: https://gitlab.com/xonotic/xonotic-nexcompat.pk3dir/-/blob/master/textures/evil2_basefloor/flr_tmtl_bump.jpg
• raw: https://gitlab.com/xonotic/xonotic-nexcompat.pk3dir/-/raw/master/textures/evil2_basefloor/flr_tmtl_bump.jpg

$ sha512sum xonotic-nexcompat.pk3dir/textures/evil2_basefloor/flr_tmtl_bump.jpg
56fe0eb83644dda3c984cdb406d2681e5d803f1c4390e786ba4a053d26916fe596e9bf593fd23fe9e4d085cc59c08881e20481bb50de59a1a5d05654d35916a8  xonotic-nexcompat.pk3dir/textures/evil2_basefloor/flr_tmtl_bump.jpg

$ file xonotic-nexcompat.pk3dir/textures/evil2_basefloor/flr_tmtl_bump.jpg
xonotic-nexcompat.pk3dir/textures/evil2_basefloor/flr_tmtl_bump.jpg: JPEG image data, JFIF standard 1.01, resolution (DPI), density 72x72, segment length 16, baseline, precision 8, 256x256, components 1

$ crunch -file xonotic-nexcompat.pk3dir/textures/evil2_basefloor/flr_tmtl_bump.jpg -fileformat crn -out /dev/null
crunch: Advanced DXTn Texture Compressor (Daemon branch, Unity format variant)

crnlib version v1.04U 64-bit Built from git-27c13ac

Crunch is brought to you by:
- 2014-2024 Daemon Developers and contributors
  https://github.com/DaemonEngine/crunch
- 2017-2018 Alexander Suvorov and Unity Software Inc.
  https://github.com/Unity-Technologies/crunch/tree/unity
- 2010-2017 Richard Geldreich, Jr. and Binomial LLC and contributors
  https://github.com/BinomialLLC/crunch

Please report bugs here: https://github.com/DaemonEngine/crunch/issues

Reading source texture: "xonotic-nexcompat.pk3dir/textures/evil2_basefloor/flr_tmtl_bump.jpg"
Error: Failed loading image file

Exit status: 1