System always crashes on Test 7 [Moving inversions, 32-bit pattern]

[Chadillac]

Mobo: Super Micro X9SCM-F (BIOS v2.3a)

CPU: Intel Xeon E3-1220 V2

RAM: Crucial 32GB (4 x 8GB) 240-Pin DDR3 SDRAM ECC Unbuffered DDR3L 1600 (PC3L 12800) Server Memory Model CT2KIT102472BD160B

Pool: 2 - 8TB WD Red Pro - mirrored

Boot: 1 - Kingston 250GB SSD - boot

PSU: Seasonic FOCUS GX-550

I've tried rotating RAM sticks, and removing to using just one...all result in a system crash during the same test: Test 7 [Moving inversions, 32-bit pattern]

The last few lines of the log are:

2023-01-15 18:21:24 - Running test #5 (Test 5 [Moving inversions, random pattern])
2023-01-15 18:21:24 - MtSupportRunAllTests - Setting random seed to 0x50415353
2023-01-15 18:21:24 - MtSupportRunAllTests - Start time: 106519 ms
2023-01-15 18:21:24 - MtSupportRunAllTests - Enabling memory cache for test
2023-01-15 18:21:24 - MtSupportRunAllTests - Enabling memory cache complete
2023-01-15 18:21:24 - Start memory range test (0x0 - 0x430000000)
2023-01-15 18:21:38 - GetIA32ArchitecturalTemp - MSR(0x19C) = 88380000 (Vendor ID: GenuineIntel 6 3A 9)
2023-01-15 18:21:38 - MapTempIntel - MSR(0x1A2) = 691400
2023-01-15 18:21:38 - Current CPU temperature: 49C
2023-01-15 18:22:38 - GetIA32ArchitecturalTemp - MSR(0x19C) = 88390000 (Vendor ID: GenuineIntel 6 3A 9)
2023-01-15 18:22:38 - MapTempIntel - MSR(0x1A2) = 691400
2023-01-15 18:22:38 - Current CPU temperature: 48C
2023-01-15 18:22:45 - MtSupportRunAllTests - Test execution time: 80.791s (Test 5 cumulative error count: 0, buffer full count: 0)
2023-01-15 18:22:45 - Running test #6 (Test 6 [Block move, 64-byte blocks])
2023-01-15 18:22:45 - MtSupportRunAllTests - Setting random seed to 0x50415353
2023-01-15 18:22:45 - MtSupportRunAllTests - Start time: 187415 ms
2023-01-15 18:22:45 - MtSupportRunAllTests - Enabling memory cache for test
2023-01-15 18:22:45 - MtSupportRunAllTests - Enabling memory cache complete
2023-01-15 18:22:45 - Start memory range test (0x0 - 0x430000000)
2023-01-15 18:23:38 - GetIA32ArchitecturalTemp - MSR(0x19C) = 88370000 (Vendor ID: GenuineIntel 6 3A 9)
2023-01-15 18:23:38 - MapTempIntel - MSR(0x1A2) = 691400
2023-01-15 18:23:38 - Current CPU temperature: 50C
2023-01-15 18:23:45 - MtSupportRunAllTests - Test execution time: 59.927s (Test 6 cumulative error count: 0, buffer full count: 0)
2023-01-15 18:23:45 - Running test #7 (Test 7 [Moving inversions, 32-bit pattern])
2023-01-15 18:23:45 - MtSupportRunAllTests - Setting random seed to 0x50415353
2023-01-15 18:23:45 - MtSupportRunAllTests - Start time: 247442 ms
2023-01-15 18:23:45 - MtSupportRunAllTests - Enabling memory cache for test
2023-01-15 18:23:45 - MtSupportRunAllTests - Enabling memory cache complete
2023-01-15 18:23:45 - Start memory range test (0x0 - 0x430000000)
2023-01-15 18:24:38 - GetIA32ArchitecturalTemp - MSR(0x19C) = 88370000 (Vendor ID: GenuineIntel 6 3A 9)
2023-01-15 18:24:38 - MapTempIntel - MSR(0x1A2) = 691400
2023-01-15 18:24:38 - Current CPU temperature: 50C

No actual errors reported by MemTest. So I'm assuming this is some other hardware error? I have no clue how to troubleshoot from here. Any suggestions greatly appreciated.

Thanks in advance!