**System Information**
Operating system: Linux-5.4.0-67-generic-x86_64-with-glibc2.31 64 Bits
Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 460.39
**Blender Version**
Broken: version: 2.93.0 Alpha, branch: master, commit date: 2021-03-16 15:02, hash: `93e2491ee72487`
Worked: version: 2.93.0 Alpha, branch: master, commit date: 2021-03-16 14:15, hash: `4ca8e09b24defc`
**Short description of error**
Upon completion of a render, or upon adding the group node "Lens Dust" to the compositor node setup in the attached Blend file, Blender immediately crashes with a segmentation fault.
**Exact steps for others to reproduce the error**
1. Open attached Blend file.
2. Note the attached "Lens Dust" group node in the compositor. This was attached in a build from the last working commit, listed above.
3. In the compositor, Add > Group > Lens Dust
4. Observe immediate segmentation fault.
{F9898213}
{F9898215}
{F9898206}
On Blender.chat, I was told by Jeroen Bakker to attach them to this bug report.