"Thread 'main' panicked" build.rs quit compiling with rp_hal

I am a rust newbie trying to compile a rust program for target rp2040 (cortexv6-m), and trying to build the cortex-m package 0.7.7 crashes with a panic while trying to copy the static library (build.rs:25). I am using rp_hal because I wish to be able to communicate with rp2040 hardware from my app. The app is building as an app under Apache Nuttx, if that makes any difference.

The error seems very very similar to #271 and my issue may be because I don't use the semihosting module, but my target won't have anything to semihost with.

I can provide more details if needed... can you help?

Start by reproducing the cortex-m 0.7.7 build for the rp2040 (cortexv6-m) target under Apache Nuttx, then inspect build.rs line 25 where the static library copy panics. Compare the failure with issue #271 and check whether the absence of semihosting is relevant. Done means identifying the cause and documenting or fixing the build failure for this target.