I can't tell if ggplot2 or Hmisc are at fault, but am posting here so others are aware of the problem and a workaround. As a workaround, revert to ggplot2 release, install Hmisc, then install ggplot2 ...

Note the column name, mpg, is unquoted. That feature hasn’t been handy, though, if you want to write your own R functions using the tidyverse. That’s because base R functions usually need quoted ...