“Cannot coerce NaN to an Int” in benchable

[AlexDaniel]

See https://irclog.perlgeek.de/perl6/2017-06-27#i_14794509

Cannot coerce NaN to an Int  in method y-ticks at /home/bisectable/.rakudobrew/moar-nom/install/share/perl6/site/sources/F589ED5005168E0E2A09F070DB83A3AB0EAA38BC (SVG::Plot) line 436
  in method plot at /home/bisectable/.rakudobrew/moar-nom/install/share/perl6/site/sources/F589ED5005168E0E2A09F070DB83A3AB0EAA38BC (SVG::Plot) line 413
  in method process at ./Benchable.p6 line 194
  in method irc-to-me at ./Benchable.p6 line 94
  in block  at /home/bisectable/.rakudobrew/moar-nom/install/share/perl6/site/sources/DFC5BCCD6AED9D84DA8A1F88FF8F423073F81CA9 (IRC::Client) line 285
  in method handle-event at /home/bisectable/git/whateverable/.precomp/4C2451ED63DDF52CF77EF3DEF1D47FCC8F88A283.1494783481.51462/DF/DFC5BCCD6AED9D84DA8A1F88FF8F423073F81CA9 line 1
  in block  at /home/bisectable/.rakudobrew/moar-nom/install/share/perl6/site/sources/DFC5BCCD6AED9D84DA8A1F88FF8F423073F81CA9 (IRC::Client) line 112
  in block  at /home/bisectable/.rakudobrew/moar-nom/install/share/perl6/site/sources/DFC5BCCD6AED9D84DA8A1F88FF8F423073F81CA9 (IRC::Client) line 110

  in block  at /home/bisectable/.rakudobrew/moar-nom/install/share/perl6/site/sources/DFC5BCCD6AED9D84DA8A1F88FF8F423073F81CA9 (IRC::Client) line 301