Size of exported usdc file is 2kb and it completes processing immediately. I don't think it's a valid export

[andytriboletti]

Describe the bug

A clear and concise description of what the bug is.
I ran teh sample code to produce a scene hello world. The scene.blend file it created is 934 MB. I looked at the images folder and it looks correct. When I ran the export to usdc command it completed immediately and the size of hte file is very small

Steps to Reproduce

What version of the code were you using?

Tell us the commit & commit hash from git log

What command did you run?

(infinigen) andy@andys-pc:~/infinigen/outputs/hello_world/0/fine$ python -m infinigen.tools.export --input_folder . --output_folder outputs/my_export -f usdc -r 1024

What are your FULL output logs?

Provide the FULL output logs from your command as a txt file.
(infinigen) andy@andys-pc:~/infinigen/outputs/hello_world/0/fine$ python -m infinigen.tools.export --input_folder . --output_folder outputs/my_export -f usdc -r 1024
Failed to open dir (No such file or directory): /run/user/1002/gvfs/
Skipping non-blend file MaskTag.json
Skipping non-blend file assets
Skipping non-blend file outputs
Skipping non-blend file pipeline_fine.csv
Skipping non-blend file polycounts.txt
USD export of 'outputs/my_export/export_scene.blend/export_scene.usdc' took 18.8 ms
updating: outputs/my_export/export_scene.blend/ (stored 0%)
updating: outputs/my_export/export_scene.blend/export_scene.usdc (deflated 45%)
Skipping non-blend file scene.blend1
Skipping non-blend file version.txt

If this is your first time running Infinigen, what are the full install logs?**

Run pip install -v -e . > logs.txt 2>&1 and send logs.txt as an attachment.

Platform

• OS & OS Version:
• GPU (?) :
• GPU Driver Version (?) :
• RAM (GB):

Additional context

Add any other context about the problem here.

[andytriboletti]

In export_logs.log I see:
INFO:root:Exporting to directory export_folder=PosixPath('outputs/my_export/export_scene.blend')
INFO:root:Deleting placeholders collection
DEBUG:root:Triangulating Meshes
DEBUG:root:Triangulating <bpy_struct, Object("Cube") at 0x3b30758>
INFO:root:---------------------------
INFO:root:Camera
INFO:root:Not mesh, skipping ...
INFO:root:---------------------------
INFO:root:Cube
INFO:root:UV Unwrapping
INFO:root:Material.001
INFO:root:Material.001 has no procedural input for DIFFUSE, not using baked textures
INFO:root:No necessary materials to bake on Cube, skipping bake
INFO:root:Material.001
INFO:root:Material.001 has no procedural input for ROUGHNESS, not using baked textures
INFO:root:No necessary materials to bake on Cube, skipping bake
INFO:root:Removed extraneous UV Layer <bpy_struct, MeshUVLoopLayer("UVMap") at 0x3c37008>
INFO:root:Reapplying baked texs on Material.001
INFO:root:Trivial shader graph, using old BSDF
INFO:root:---------------------------
INFO:root:Light
INFO:root:Not mesh, skipping ...
INFO:root:Exporting file to export_file=PosixPath('outputs/my_export/export_scene.blend/export_scene.usdc')