When I run master i386 and Tor 0.3.3.9 x68_64 in a mixed chutney network, I see the following error: ``` Detail: chutney/tools/warnings.sh /Users/USER/tor/chutney/tools/../net/nodes.1534263100 Warning: Unable to add signatures to consensus: Mismatched digest. Number: 102 Exit 255 ``` master x86_64 and Tor 0.3.3.9 x68_64 in a mixed chutney network also get the same error: ``` Detail: chutney/tools/warnings.sh /Users/USER/tor/chutney/tools/../net/nodes.1534285790 Warning: Unable to add signatures to consensus: Mismatched digest. Number: 102 Exit 255 ``` We should fix this issue if it affects Linux and BSD. If it doesn't, maybe we should downgrade our support for authorities on macOS. If we want to diagnose this issue, implementing legacy/trac#20625 and legacy/trac#4539 would help.