Running examples in ‘urltools-Ex.R’ failed
The error most likely occurred in:

> base::assign(".ptime", proc.time(), pos = "CheckExEnv")
> ### Name: suffix_extract
> ### Title: extract the suffix from domain names
> ### Aliases: suffix_extract
> 
> ### ** Examples
> 
> 
> # Using url_parse
> domain_name <- url_parse("http://en.wikipedia.org")$domain
> suffix_extract(domain_name)
              host subdomain    domain suffix
1 en.wikipedia.org        en wikipedia    org
> 
> # Using domain()
> domain_name <- domain("http://en.wikipedia.org")
> suffix_extract(domain_name)
              host subdomain    domain suffix
1 en.wikipedia.org        en wikipedia    org
> 
> #Relying on a fresh version of the suffix dataset
> suffix_extract(domain("http://en.wikipedia.org"), suffix_refresh())
Warning in readLines(connection) :
  line 4257 appears to contain an embedded nul
Warning in readLines(connection) :
  line 5579 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6825 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6827 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6829 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6830 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6831 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6832 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6833 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6834 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6835 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6836 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6837 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6838 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6839 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6840 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6841 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6842 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6843 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6844 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6845 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6846 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6847 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6848 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6849 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6850 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6851 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6852 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6853 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6854 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6855 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6856 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6857 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6858 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6859 appears to contain an embedded nul
Warning in grep(pattern = "^//", x = results) :
  input string 4257 is invalid in this locale
Warning in grep(pattern = "^//", x = results) :
  input string 6825 is invalid in this locale
Warning in grep(pattern = "^//", x = results) :
  input string 6826 is invalid in this locale
Warning in grep(pattern = "^//", x = results) :
  input string 6827 is invalid in this locale
Warning in grep(pattern = "^//", x = results) :
  input string 6828 is invalid in this locale
Error in gsub(x = suffixes, pattern = "*.", replacement = "", fixed = TRUE) : 
  input string 3806 is invalid in this locale
Calls: suffix_extract -> suffix_load -> gsub
Execution halted