Show indication that the build is failing
Right now when the build is failing the line indication is that the test is failing. Technically, it is true. For the developer however, a failing running test, and a non compiling tests require different responses.
The spinner shows when the build is failing, but is in a very inaccessible placement on the far bottom right. This is not a place that we're used to looking at.
It would be much better, in my opinion, to have the line-dot color change to indicate build failure in addition to the spinner.