Server crash

What does it mean?

Unity Player [version: Unity 5.3.2p3_b6c1a63227dc]

lua52.DLL caused an Access Violation (0xc0000005)
in module lua52.DLL at 0033:f6a4f6b2.

Error occurred at 2016-02-27_163358.
E:\server\steam\steamapps\common\rust_dedicated\RustDedicated.exe, run by Freeman.
80% memory in use.
16367 MB physical memory [3116 MB free].
32731 MB paging file [16711 MB free].
8388608 MB user address space [8384094 MB free].
Read from location ffffffff caused an access violation.

Context:
RDI: 0xca098ab0 RSI: 0x0000003d RAX: 0x00000044
RBX: 0x6556202c RCX: 0x00000001 RDX: 0x00000000
RIP: 0xf6a4f6b2 RBP: 0x00000043 SegCs: 0x00000033
EFlags: 0x00010206 RSP: 0x002ed830 SegSs: 0x0000002b
R8: 0x00000022 R9: 0x0646dd40 R10: 0x000c93e0
R11: 0xd17ae890 R12: 0xffffffff R13: 0x00393200
R14: 0xfffffffc R15: 0x70a3d70b