If you do lots of try pushes it’s worth learning to star oranges using the keyboard instead of the mouse. It’s much faster that way.

The important keystrokes are as follows.

• ‘j’ and ‘n’ move focus to the next unstarred failure. (‘k’ and ‘p’ move focus to the previous unstarred failure.)
• Space adds the selected failure to the pinboard.
• Ctrl-Enter stars all jobs in the pinboard.

So a typical keystroke sequence to star multiple jobs would be: j, space, j, space, j, space, ctrl-enter. Between each j and space you should, of course, check that the failure matches an existing one.

This information, along with lots of other interesting tidbits, is in the Treeherder User Guide.

Thank you to Phil Ringnalda for teaching me this.

https://blog.mozilla.org/nnethercote/2016/01/09/fast-starring-of-oranges-on-try-pushes/