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 3248 appears to contain an embedded nul
Warning in readLines(connection) :
  line 5186 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6445 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6446 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6447 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6448 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6449 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6450 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6451 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6452 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6453 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6454 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6455 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6456 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6457 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6458 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6459 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6460 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6461 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6462 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6463 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6464 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6465 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6466 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6467 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6468 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6469 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6470 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6471 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6472 appears to contain an embedded nul
Warning in readLines(connection) :
  line 6473 appears to contain an embedded nul
Warning in grep(pattern = "^//", x = results) :
  input string 3248 is invalid in this locale
Error in gsub(x = suffixes, pattern = "*.", replacement = "", fixed = TRUE) : 
  input string 2901 is invalid in this locale
Calls: suffix_extract -> suffix_load -> gsub
Execution halted