R Under development (unstable) (2023-09-26 r85226 ucrt) -- "Unsuffered Consequences"
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> library(testthat)
> library(poems)
The legacy packages maptools, rgdal, and rgeos, underpinning the sp package,
which was just loaded, will retire in October 2023.
Please refer to R-spatial evolution reports for details, especially
https://r-spatial.org/r/2023/05/15/evolution4.html.
It may be desirable to make the sf package available;
package maintainers should consider adding sf to Suggests:.
The sp package is now running under evolution status 2
     (status 2 uses the sf package in place of rgdal)
> 
> test_check("poems")
[ FAIL 0 | WARN 0 | SKIP 0 | PASS 1061 ]
> 
> proc.time()
   user  system elapsed 
  32.70    0.95  170.14