When built on Debian 10, Rumprun Redis images crash with
general protection at 0x34e0a1 (0x0)
shortly after starting Redis (but after parsing configuration files).
This happens on KVM, I didn't try with other targets.
This seems to be a compiler/toolchain related issue; for me building the unikernel in a Debian 8 (Jessie) environment addresses the issue.