Importing large mercurial repository: it's been 17 hours; how much longer should I wait?

unknown

I used the Import existing code tool to import a giant Mercurial repo. It's been chugging along for 17 hours. I can visit the import status page and see the following output:

18:16:15 hg import for: https://hg.mozilla.org/mozilla-central
18:16:15 Cloning https://hg.mozilla.org/mozilla-central...
18:16:16 applying clone bundle from https://hg.cdn.mozilla.net/mozilla-central/5faab9e619901b1513fd4ca137747231be550def.zstd-max.hg
18:16:18 adding changesets
18:20:46 adding manifests
19:49:09 adding file changes

It's now 11:49:05 the next day and here we are. Is this normal for a repository of that size? Is it wedged? Did the import time out without telling me?

Visiting the repository page redirects to the import status page, so something thinks it's still importing.