[tor-bugs] #26475 [Applications/Tor Browser]: ESR60-based .dmg images are not built reproducibly with Stylo enabled using rustc > 1.25.0

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#26475: ESR60-based .dmg images are not built reproducibly with Stylo enabled using
rustc > 1.25.0
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 Reporter:  gk                                   |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:
                                                 |  needs_information
 Priority:  Very High                            |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tbb-rbm, TorBrowserTeam201807,       |  Actual Points:
  GeorgKoppen201807                              |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
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Comment (by gk):

 Bisecting seems tricky as I get intermittent differences which sometimes
 go away if one just tries several times. I've attached the disassmebly
 diff of `gkrust-d3a9de07b53ab691.gkrust0.rcgu.o` as it might help a bit
 narrowing things down. I wonder whether we actually got the differences
 due to an LLVM update...

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/26475#comment:21>
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