Task numbers with `-v` don't match up

[mateon1]

When using the -v flag for parallel, the processing task #x number doesn't match up with completed task #x

mateon@hydra:/shared/dev/fuzz$ parallel -v echo ::: 1
parallel: processing 1 inputs on 8 threads
parallel: processing task #1 of 1: '1'
1
parallel:  completed task #0 of 1: '1'