Looking at https://ci.chromium.org/p/chromium/builders/luci.chromium.try/mac_chromium_rel_ng/25381, the job has been running for about 2 hours and seems to have finished earlier than that.

However, it is still shown as Running at the time of writing, as well as in Gerrit (https://chromium-review.googlesource.com/c/chromium/src/+/1013749/1).