Can't run output that has dplyr warnings through latex

[ggrothendieck]

This isn't really a dplyr problem -- it is a latex problem because latex was developed before unicode existed; nevertheless, from a practical point of view it makes it hard to run an arbitrary dplyr script that may have warnings through latex using knitr::spin since dplyr warnings include a unicode character \u2139 that makes latex fail. See
yihui/knitr#2231

[DavisVaughan]

I've added some notes of my own experience but i think it is a knitr bug so im going to close here and we will track this over there

[cderv]

@DavisVaughan I think this is related to cli url support in formatting functions - This was also reported in yihui/knitr#2234 and I looked into there to found that the deprecation warning from lifecycle was now using url which in message and it seems there is some ANSI characters still present. Probably related to r-lib/cli#581

So I don't think it is a knitr issue. I'll comment on knitr side about this.