• using R version 4.0.0 (2020-04-24)
• using platform: x86_64-apple-darwin17.0 (64-bit)
• using session charset: UTF-8
• checking for file ‘spatial.tools/DESCRIPTION’ ... OK
• checking extension type ... Package
• this is package ‘spatial.tools’ version ‘1.6.2’
• checking package namespace information ... OK
• checking package dependencies ... OK
• checking if this is a source package ... OK
• checking if there is a namespace ... OK
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• checking for hidden files and directories ... OK
• checking for portable file names ... OK
• checking for sufficient/correct file permissions ... OK
• checking whether package ‘spatial.tools’ can be installed ... [8s/12s] OK
• checking installed package size ... OK
• checking package directory ... OK
• checking DESCRIPTION meta-information ... OK
• checking top-level files ... OK
• checking for left-over files ... OK
• checking index information ... OK
• checking package subdirectories ... OK
• checking R files for non-ASCII characters ... OK
• checking R files for syntax errors ... OK
• checking whether the package can be loaded ... OK
• checking whether the package can be loaded with stated dependencies ... OK
• checking whether the package can be unloaded cleanly ... OK
• checking whether the namespace can be loaded with stated dependencies ... OK
• checking whether the namespace can be unloaded cleanly ... OK
• checking loading without being on the library search path ... OK
• checking dependencies in R code ... OK
• checking S3 generic/method consistency ... OK
• checking replacement functions ... OK
• checking foreign function calls ... OK
• checking R code for possible problems ... [6s/10s] OK
• checking Rd files ... OK
• checking Rd metadata ... OK
• checking Rd cross-references ... OK
• checking for missing documentation entries ... OK
• checking for code/documentation mismatches ... OK
• checking Rd \usage sections ... OK
• checking Rd contents ... OK
• checking for unstated dependencies in examples ... OK
• checking examples ... ERROR
  Running examples in ‘spatial.tools-Ex.R’ failed
  The error most likely occurred in:
  
  > ### Name: tahoe_highrez_training
  > ### Title: Point and polygon files for use with spatial.tools
  > ### Aliases: tahoe_highrez_training
  > ### Keywords: data
  >
  > ### ** Examples
  >
  > library("raster")
  Loading required package: sp
  > library("rgdal")
  rgdal: version: 1.4-8, (SVN revision 845)
   Geospatial Data Abstraction Library extensions to R successfully loaded
   Loaded GDAL runtime: GDAL 2.4.2, released 2019/06/28
   Path to GDAL shared files: /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/rgdal/gdal
   GDAL binary built with GEOS: FALSE
   Loaded PROJ.4 runtime: Rel. 5.2.0, September 15th, 2018, [PJ_VERSION: 520]
   Path to PROJ.4 shared files: /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/rgdal/proj
   Linking to sp version: 1.4-1
  > tahoe_highrez_training_polygons <- readOGR(
  + dsn=system.file("external", package="spatial.tools"),layer="tahoe_highrez_training")
  OGR data source with driver: ESRI Shapefile
  Source: "/Volumes/Builds/packages/high-sierra-x86_64/results/4.0/spatial.tools.Rcheck/spatial.tools/external", layer: "tahoe_highrez_training"
  with 8 features
  It has 2 fields
  > spplot(tahoe_highrez_training_polygons,zcol="Class")
  Warning in extend.limits(range(as.numeric(z), finite = TRUE)) :
    NAs introduced by coercion
  Warning in min(x) : no non-missing arguments to min; returning Inf
  Warning in max(x) : no non-missing arguments to max; returning -Inf
  Error in seq.default(zrng[1], zrng[2], length.out = cuts + 2) :
    'from' must be a finite number
  Calls: spplot ... <Anonymous> -> levelplot.formula -> seq -> seq.default
  Execution halted
• checking PDF version of manual ... OK
• DONE
  Status: 1 ERROR