The entire firmware that runs all the things.
The easy + fast way to log is to use the log-rtt feature.
Listening on port 19021 (e.g. via netcat localhost 19021) outputs the RTT message output
from JLinkGDBServer -strict -device LPC55S69 -if SWD -vd.
The slower alternative (although not so bad due to delog bundling) is to use the log-semihosting feature.
Both at once does not work, neither does log-serial.
Additionally, logging features need to be turned on.
An example invocation: cargo run --release --features board-lpcxpresso55,develop,log-rtt,fido-authenticator/log-all