Where to find android crash history

The document states that

Android stores trace information when it experiences an ANR. On older OS releases, there's >a single /data/anr/traces.txt file on the device.

On newer OS releases, there are multiple >/data/anr/anr_* files. You can access ANR traces from a device or emulator by using >Android Debug Bridge (adb) as root:

adb root
adb shell ls /data/anr
adb pull /data/anr/<filename>

crash report can be found at default path: /data/anr/

some manufacture place in custom path like: /data/system/ckerror

use cmd: adb pull /data/anr "dest path"

example: in windows cmd prompt: adb pull /data/anr c:\trace

After ANR happens, you would find call stack of related process at /data/anr/traces.txt
After application crashes, you might find call stack of crashed application under /data/tombstones directory.

See Android: How to get kernel logs after kernel panic?

It looks like /data/dontpanic/ should contain some "apanic" files, but only if the kernel's apanic support is enabled, and it worked. (I haven't seen anything there in my case, but maybe you'll be luckier than I ...)