Here is what happened last night:
I attached the encrypted drive and started a copy of some big files (total of 100 GB) and went to sleep.
This morning the mac mini was off!
and the following system report shall be sent to apple after the reboot:
Thu Oct 29 06:58:51 2015
*** Panic Report ***
panic(cpu 1 caller 0xffffff8009b9ed64): launchd exited (signal 11, exit status 0 )
uuid info:
0x7fff6775d000 uuid = <03673b53-b8b7-34d1-adce-f449e78e39cc>
0x1035d4000 uuid = <13d08717-b23a-38be-85a6-085b051f8322>
Thread 4 crashed
RAX: 0x00007fff67794e48, RBX: 0x00007fff6779c5f8, RCX: 0x0000000000000000, RDX: 0x00007fff67795568
RSP: 0x00007000000801c8, RBP: 0x0000700000080250, RSI: 0x0000000000000265, RDI: 0x00007fff6779c5f8
R8: 0x0000000000000000, R9: 0x00007000000805c0, R10: 0x0000700000080b01, R11: 0x0000000103613170
R12: 0x0000000000000000, R13: 0x000000010401f340, R14: 0x0000000000000265, R15: 0x0000000000000000
RFL: 0x0000000000010202, RIP: 0x00007fff5fc1168a, CS: 0x000000000000002b, SS: 0x0000000000000023
Thread 0: 0xffffff80167de000
0x00007fff8a373d85
0x0000000000000000
Thread 1: 0xffffff80168476d0
0x00007fff8a3827b4
0x0000000000000000
Thread 2: 0xffffff8016847240
Could not read LR from frame at 0x000070000021cd48
Thread 3: 0xffffff801828d920
0x00007fff8a37e674
0x00007fff8a372a3b
0x00007fff8a3731b8
0x00007fff8a3796bf
0x00007fff8a371d0b
0x00007fff8a371ab8
0x00007fff968fa4f2
0x00007fff968f8375
0x0000000000000000
Thread 4: 0xffffff801b81f6d0
0x00007fff67761063
0x00007fff92230262
0x0000000103613170
0x00007fff85b6f52a
0x0000000000000000
0x00007fff8a372a3b
0x00007fff8a3731b8
0x00007fff8a3796bf
0x00007fff8a371d0b
0x00007fff8a371ab8
0x00007fff968fa4f2
0x00007fff968f8375
0x0000000000000000
Thread 5: 0xffffff801afa46d0
0x00007fff85b701f3
0x00007fff85b700af
0x00000001035fe4bd
0x00007fff8a386324
0x00007fff8a36e3c3
0x00007fff8a372ff3
0x00007fff8a3796bf
0x00007fff8a371d0b
0x00007fff8a371ab8
0x00007fff968fa4f2
0x00007fff968f8375
0x0000000000000000
Mac OS version: 15B42
Kernel version: Darwin Kernel Version 15.0.0: Sat Sep 19 15:53:46 PDT 2015; root:xnu-3247.10.11~1/RELEASE_X86_64
Kernel UUID: AB5FC1B4-12E7-311E-8E6F-9023985D8C1D
System model name: Macmini6,1 (Mac-031AEE4D24BFF0B1)
Model: Macmini6,1, BootROM MM61.0106.B0A, 2 processors, Intel Core i5, 2,5 GHz, 4 GB, SMC 2.7f0
Graphics: Intel HD Graphics 4000, Intel HD Graphics 4000, Built-In
Memory Module: BANK 0/DIMM0, 2 GB, DDR3, 1600 MHz, 0x80AD, 0x484D54333235533643465238432D50422020
Memory Module: BANK 1/DIMM0, 2 GB, DDR3, 1600 MHz, 0x80AD, 0x484D54333235533643465238432D50422020
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x10E), Broadcom BCM43xx 1.0 (7.21.94.29.1a4)
Bluetooth: Version 4.4.2f1 16391, 3 services, 27 devices, 1 incoming serial ports
Network Service: Ethernet, Ethernet, en0
Network Service: Wi-Fi, AirPort, en1
Serial ATA Device: Samsung SSD 840 EVO 250GB, 250,06 GB
Serial ATA Device: ST2000LM003 HN-M201RAD, 2 TB
USB Device: USB 2.0 Bus
USB Device: Hub
USB Device: Hub
USB Device: IR Receiver
USB Device: BRCM20702 Hub
USB Device: Bluetooth USB Host Controller
USB Device: USB 2.0 Bus
USB Device: Hub
USB Device: USB 3.0 Bus
USB Device: My Book 1130
USB Device: My Passport 0748
Thunderbolt Bus: Mac mini, Apple Inc., 23.4