Insect and Spider Identification: What is this? Colourful with pincers, 1 by walliver_g

walliver_g wrote:
Can anyone help me with this? I've had a quick search but can't see anything similar.

I came across it in Warburton, Victoria, on a rainy day. It was on a muddy path and was a bit unsure of my presence. It scuttled off backwards waving its pincers and then went under a rock, with its pincers still poking out.

Not too sure how clear the photo is, but its body is bright orange and pincers (claws/whatever they are) are very blue. I'm not very good with sizes, but I'd guess it was between one and two inches.