Thread.cpp:449: Depth Thread::adjustDepth(): assertion "0 <= index && index <= 19" failed' in the Monkey test

[calcitem]

// signal 6 (SIGABRT), code -1 (SI_QUEUE), fault addr --------
// Abort message: 'Sanmill\src\thread.cpp:449: Depth Thread::adjustDepth(): assertion "0 <= index && index <= 19" failed'
//     x0  0000000000000000  x1  0000000000006e70  x2  0000000000000006  x3  000000795f17eaf0
//     x4  8000000000808080  x5  8000000000808080  x6  8000000000808080  x7  0000000000000008
//     x8  00000000000000f0  x9  f567c2be133382d2  x10 0000000000000001  x11 0000000000000000
//     x12 fffffff0fffffbdf  x13 000000005fce6364  x14 001e41e345437621  x15 00004efcbe6a2941
//     x16 0000007a9f1668c8  x17 0000007a9f142550  x18 0000007955348000  x19 0000000000001d53
//     x20 0000000000006e70  x21 00000000ffffffff  x22 0000000000008400  x23 000000799a729146
//     x24 000000799a727d17  x25 000000799a728ea9  x26 000000795f17f018  x27 00000079926c3f41
//     x28 0000000000000001  x29 000000795f17eb90
//     sp  000000795f17ead0  lr  0000007a9f0f30c4  pc  0000007a9f0f30f0
//
// backtrace:
//       #00 pc 00000000000830f0  /apex/com.android.runtime/lib64/bionic/libc.so (abort+160) (BuildId: 6dc18c350dc6bdab66bd0af0dcfd6e4c)
//       #01 pc 0000000000083b4c  /apex/com.android.runtime/lib64/bionic/libc.so (__assert2+36) (BuildId: 6dc18c350dc6bdab66bd0af0dcfd6e4c)
//       #02 pc 000000000005e908  /data/app/com.calcitem.sanmill-ke4acanVIFX-_6ztfi3Bnw==/lib/arm64/libengine.so (Thread::adjustDepth()+360) (BuildId: 8f3348aeb157d40f2bf18e67b297a66b89cbcafc)
//       #03 pc 000000000005c1ac  /data/app/com.calcitem.sanmill-ke4acanVIFX-_6ztfi3Bnw==/lib/arm64/libengine.so (Thread::search()+104) (BuildId: 8f3348aeb157d40f2bf18e67b297a66b89cbcafc)
//       #04 pc 000000000005cb1c  /data/app/com.calcitem.sanmill-ke4acanVIFX-_6ztfi3Bnw==/lib/arm64/libengine.so (Thread::idle_loop()+216) (BuildId: 8f3348aeb157d40f2bf18e67b297a66b89cbcafc)
//       #05 pc 000000000005edb8  /data/app/com.calcitem.sanmill-ke4acanVIFX-_6ztfi3Bnw==/lib/arm64/libengine.so (_ZNSt6__ndk114__thread_proxyINS_5tupleIJNS_10unique_ptrINS_15__thread_structENS_14default_deleteIS3_EEEEM6ThreadFvvEPS7_EEEEEPvSC_+64) (BuildId: 8f3348aeb157d40f2bf18e67b297a66b89cbcafc)
//       #06 pc 00000000000e7480  /apex/com.android.runtime/lib64/bionic/libc.so (__pthread_start(void*)+36) (BuildId: 6dc18c350dc6bdab66bd0af0dcfd6e4c)
//       #07 pc 000000000008522c  /apex/com.android.runtime/lib64/bionic/libc.so (__start_thread+64) (BuildId: 6dc18c350dc6bdab66bd0af0dcfd6e4c)
//
** System appears to have crashed at event 22734 of 1000000 using seed 1607601020027