IceStudio projects fails an 'apio verify' test

[zapta]

This problem was observed in the apio repository but since these looks like IceStudio projects, filing it here.

This directory https://github.com/FPGAwars/apio/tree/develop/test-examples/Alhambra-II contains three IceStudio projects. The project 01-LEDs-buttons does pass apio verify but the other two 02-jumping-LED and 03-riscv-stop-watch fail.

Here is an example:

/Users/user/projects/apio_dev/repo/test-examples/Alhambra-II/02-jumping-LED $ apio verify
iverilog -B "/Users/user/.apio/packages/tools-oss-cad-suite/lib/ivl" -o hardware.out -D VCD_OUTPUT=dummy_vcd_output -D NO_ICE40_DEFAULT_ASSIGNMENTS "/Users/user/.apio/packages/tools-oss-cad-suite/share/yosys/ice40/cells_sim.v" main.v 02-jumping-LED_tb.v
main.v:383: error: 'q' has already been declared in this scope.
main.v:380:      : It was declared here as a net.
main.v:657: error: 'q' has already been declared in this scope.
main.v:655:      : It was declared here as a net.
main.v:3171: error: 'q' has already been declared in this scope.
main.v:3167:      : It was declared here as a net.
scons: *** [hardware.out] Error 3
===================================================================== [ ERROR ] Took 0.11 seconds =====================================================================

The errors refer to duplicate declarations of 'q' as seen here https://github.com/FPGAwars/apio/blob/777113150ff2d7ab553482b76d4e7050146e3dd3/test-examples/Alhambra-II/02-jumping-LED/main.v#L383