Running 'cast.R' [2s]
  Comparing 'cast.Rout' to 'cast.Rout.save' ...4c4
< Linking to GEOS 3.5.0, GDAL 2.1.1, proj.4 4.9.3
---
> Linking to GEOS 3.5.0, GDAL 2.1.0, proj.4 4.9.2
  Running 'crs.R' [1s]
  Comparing 'crs.Rout' to 'crs.Rout.save' ...4c4
< Linking to GEOS 3.5.0, GDAL 2.1.1, proj.4 4.9.3
---
> Linking to GEOS 3.5.0, GDAL 2.1.0, proj.4 4.9.2
  Running 'dist.R' [3s]
  Comparing 'dist.Rout' to 'dist.Rout.save' ... OK
  Running 'dplyr.R' [4s]
  Comparing 'dplyr.Rout' to 'dplyr.Rout.save' ... OK
  Running 'empty.R' [2s]
  Comparing 'empty.Rout' to 'empty.Rout.save' ... OK
  Running 'gdal_geom.R' [2s]
  Comparing 'gdal_geom.Rout' to 'gdal_geom.Rout.save' ...78c78
< GDAL has 56 drivers
---
> GDAL has 77 drivers
  Running 'geos.R' [6s]
  Comparing 'geos.Rout' to 'geos.Rout.save' ... OK
  Running 'graticule.R' [3s]
  Comparing 'graticule.Rout' to 'graticule.Rout.save' ...14c14
< Linking to GEOS 3.5.0, GDAL 2.1.1, proj.4 4.9.3
---
> Linking to GEOS 3.5.0, GDAL 2.1.0, proj.4 4.9.2
75c75
< Reading layer `nc.gpkg' from data source `D:\temp\RtmpyWUdRV\RLIBS_32858ab702\sf\gpkg\nc.gpkg' using driver `GPKG'
---
> Reading layer `nc.gpkg' from data source `/home/edzer/git/sf.Rcheck/sf/gpkg/nc.gpkg' using driver `GPKG'
  Running 'grid.R' [3s]
  Comparing 'grid.Rout' to 'grid.Rout.save' ... OK
  Running 'pg.R' [2s]
  Comparing 'pg.Rout' to 'pg.Rout.save' ... OK
  Running 'plot.R' [4s]
  Comparing 'plot.Rout' to 'plot.Rout.save' ... OK
  Running 'read.R' [2s]
  Comparing 'read.Rout' to 'read.Rout.save' ... OK
  Running 'roundtrip.R' [10s]
  Comparing 'roundtrip.Rout' to 'roundtrip.Rout.save' ... OK
  Running 'sfc.R' [2s]
  Comparing 'sfc.Rout' to 'sfc.Rout.save' ...401c401
< "3.5.0" "2.1.1" "4.9.3" 
---
> "3.5.0" "2.1.0" "4.9.2" 
  Running 'sfg.R' [2s]
  Comparing 'sfg.Rout' to 'sfg.Rout.save' ... OK
  Running 'testthat.R' [5s]
Running the tests in 'tests/testthat.R' failed.
Last 13 lines of output:
  > test_check("sf")
  1. Error: st_read and write handle date and time (@test_tm.R#10) ---------------
  Could not guess driver for D:\temp\RtmpMXLbIl\file23504adb466d.shp
  1: st_write(x[-4], shp, quiet = TRUE) at testthat/test_tm.R:10
  2: CPL_write_ogr(obj, dsn, layer, driver, as.character(dataset_options), as.character(layer_options), 
         geom, dim, quiet)
  3: guess_driver_can_write(dsn)
  4: stop("Could not guess driver for ", dns, call. = FALSE)
  
  testthat results ================================================================
  OK: 192 SKIPPED: 0 FAILED: 1
  1. Error: st_read and write handle date and time (@test_tm.R#10) 
  
  Error: testthat unit tests failed
  Execution halted