
vec_c(df1, df2):

No common type for `..1$x$y$z` <double> and `..2$x$y$z` <character>. 


vec_c(df1, df1, df2):

No common type for `..1$x$y$z` <double> and `..3$x$y$z` <character>. 


vec_c(foo = df1, bar = df2):

No common type for `foo$x$y$z` <double> and `bar$x$y$z` <character>. 

