fcomm::test_make_fcomm_examples is broken on master

[samuelburnham]

Output of cargo nextest run -p fcomm --run-ignored all -E 'test(test_make_fcomm_examples)' --release

thread 'main' panicked at 'committed function not found', fcomm/src/bin/fcomm.rs:273:22
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
make: *** [Makefile:46: chained2-opening] Error 101
make: *** Waiting for unfinished jobs....
thread 'main' panicked at 'committed function not found', fcomm/src/bin/fcomm.rs:273:22
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
make: *** [Makefile:46: chained2-opening.json] Error 101
', fcomm/tests/makefile_tests.rs:29:5
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

I believe the failing case is from open in the chained functional commitment test