Just noticed this on my production 3.1 module.  Was this an artifact of the upgrade from .005 to .006?

Last boot was 140983 second(s) ago
Time at boot: 2018-05-20 19:05:59 PDT
This is reset #17 since last power cycle
Detected boot reason: EarlyCrash (12/12)
Crash counters: 1 total, 1 early
Last crash: StoreProhibited exception on core 1
Registers:
PC : 0x4008f6de PS : 0x00060033 A0 : 0x8008eb13 A1 : 0x3ffd6150
A2 : 0xfefeff4e A3 : 0x0000abab A4 : 0xb33fffff A5 : 0x00000001
A6 : 0x00060020 A7 : 0x0000cdcd A8 : 0x0000abab A9 : 0x3ffd6150
A10 : 0x00000003 A11 : 0x00060023 A12 : 0x00060020 A13 : 0x3ffb4188
A14 : 0x000001e8 A15 : 0x00001800 SAR : 0x00000000 EXCCAUSE: 0x0000001d
EXCVADDR: 0xfefeff4e LBEG : 0x00000000 LEND : 0x00000000 LCOUNT : 0x00000000
Backtrace:
0x4008f6de 0x4008eb10 0x4011f3fd 0x40174f95 0x400e73be 0x400e4699 0x40085149 0x40128bc2 0x40128df7 0x401287b4 0x400ea22d 0x400eac7a 0x400ead09 0x400ead19 0x402207d6 0x400e9ece 0x400e9f79 0x400e45f5 0x400e4604 0x400f5c09 0x400f035d
Version: 3.1.006/ota_0/main (build idf v3.1-dev-455-gf4905cdf May 20 2018 20:08:31)

---

Running partition: ota_0
Boot partition: ota_0
Firmware: 3.1.006/ota_0/main (build idf v3.1-dev-455-gf4905cdf May 20 2018 20:08:31)