Comment 14 for bug 2040059

I had another look at this and it appears the default for MAX_TEST_FAILURES in d/tests.mk just needs bumping to match the new amount specified in d/rules (230). I'm happy to upload this change (it just matches what we've done in d/rules after all), but it's not going to migrate yet due to existing breakage in ipywidgets; specifically ipywidgets is currently stuck in proposed because jupyter-nbextension-jupyter-js-widgets has moved from ipywidgest to node-ipydatagrid and the latter is also stuck in proposed. I'll dig into this a bit further next week.