Bug#1061627: jpeg-xl: 0.8 failing autopkgtest

[Jeremy Bícha]

Source: jpeg-xl
Version: 0.8.2-1
Severity: serious

jpeg-xl in Experimental has a failing autopkgtest. This will need to
be fixed before it is possible for jpeg-xl 0.8.2 to reach Testing.

Log excerpt
---------------
Test - Lossless Roundtrip
JPEG XL encoder v0.8.2 [AVX2,SSE4,SSSE3,SSE2]
./lib/extras/dec/color_hints.cc:54: No color_space/icc_pathname given,
assuming sRGB
Read 320x320 image, 1228816 bytes, 814.0 MP/s
Encoding [Modular, lossless, effort: 7],
./lib/jxl/encode.cc:263: Only JXL_BIT_DEPTH_FROM_PIXEL_FORMAT is
implemented for float types.
./lib/jxl/encode.cc:1848: Invalid input bit depth
JxlEncoderAddImageFrame() failed.
EncodeImageJXL() failed.

Full logs
-----------
https://release.debian.org/britney/pseudo-excuses-experimental.html#jpeg-xl

https://ci.debian.net/packages/j/jpeg-xl/unstable/amd64/

Thank you,
Jeremy Bícha