Clean build results in a bootloop

Building with esp-idf 5.5 (5.5.1 results in problem from #15).

After flashing, board starts bootlooping with the following:

Crashing in ESP-IDF task
Guru Meditation Error: Core  1 panic'ed (Instruction access fault). Exception was unhandled.

--- Stack dump detected
Core  1 register dump:
MEPC    : 0x00000000  RA      : 0x00000000  SP      : 0x4ff278c0  GP      : 0x4ff18580  
TP      : 0x4ff278e0  T0      : 0x4ff0f49a  T1      : 0x4ff12398  T2      : 0xffffffff  
--- 0x4ff0f49a: spinlock_release at /home/domi/firmware/components/esp_hw_support/include/spinlock.h:181
--- (inlined by) vPortExitCriticalMultiCore at /home/domi/firmware/components/freertos/FreeRTOS-Kernel/portable/riscv/port.c:550
--- 0x4ff12398: xTaskIncrementTickOtherCores at /home/domi/firmware/components/freertos/esp_additions/freertos_tasks_c_additions.h:125
S0/FP   : 0x00000000  S1      : 0x00000000  A0      : 0x0000002b  A1      : 0x00000000  
A2      : 0x00000004  A3      : 0x00000000  A4      : 0x20800008  A5      : 0x00000000  
A6      : 0x00000003  A7      : 0x4000c0de  S2      : 0x00000000  S3      : 0x00000000  
--- 0x4000c0de: usb_serial_jtag_write at /home/domi/esp-idf/components/esp_driver_usb_serial_jtag/src/usb_serial_jtag_vfs.c:184
S4      : 0x00000000  S5      : 0x00000000  S6      : 0x00000000  S7      : 0x00000000  
S8      : 0x00000000  S9      : 0x00000000  S10     : 0x00000000  S11     : 0x00000000  
T3      : 0x4ff24aef  T4      : 0x00000001  T5      : 0x00000000  T6      : 0x00000001  
MSTATUS : 0x00011880  MTVEC   : 0x4ff00003  MCAUSE  : 0x00000001  MTVAL   : 0x00000000  
--- 0x00011880: SDL_PQtoNits at :?
--- 0x4ff00003: _vector_table at ??:?
MHARTID : 0x00000001  

Full log attached here: log.txt. Yes, I did idf.py fullclean to make sure the directory was clean.

Any suggestions would be greatly appreciated.