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 5557 appears to contain an embedded nul
Warning in readLines(connection) :
  line 5558 appears to contain an embedded nul
Warning in readLines(connection) :
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Warning in readLines(connection) :
  line 7733 appears to contain an embedded nul
Warning in readLines(connection) :
  line 7734 appears to contain an embedded nul
Warning in readLines(connection) :
  line 7735 appears to contain an embedded nul
Warning in readLines(connection) :
  line 7736 appears to contain an embedded nul
Warning in readLines(connection) :
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  line 7738 appears to contain an embedded nul
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  line 7739 appears to contain an embedded nul
Warning in readLines(connection) :
  line 7740 appears to contain an embedded nul
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  line 7742 appears to contain an embedded nul
Warning in readLines(connection) :
  line 7743 appears to contain an embedded nul
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  line 7744 appears to contain an embedded nul
Warning in readLines(connection) :
  line 7745 appears to contain an embedded nul
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  line 7746 appears to contain an embedded nul
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  line 7747 appears to contain an embedded nul
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  line 7748 appears to contain an embedded nul
Warning in readLines(connection) :
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Warning in readLines(connection) :
  line 7750 appears to contain an embedded nul
Warning in readLines(connection) :
  line 7751 appears to contain an embedded nul
Warning in readLines(connection) :
  line 7752 appears to contain an embedded nul
Warning in readLines(connection) :
  line 7753 appears to contain an embedded nul
Warning in readLines(connection) :
  line 7754 appears to contain an embedded nul
Warning in readLines(connection) :
  line 7755 appears to contain an embedded nul
Warning in readLines(connection) :
  line 7756 appears to contain an embedded nul
Warning in readLines(connection) :
  line 7757 appears to contain an embedded nul
Warning in readLines(connection) :
  line 7758 appears to contain an embedded nul
Warning in readLines(connection) :
  line 7759 appears to contain an embedded nul
Warning in readLines(connection) :
  line 7760 appears to contain an embedded nul
Warning in readLines(connection) :
  line 7761 appears to contain an embedded nul
Warning in readLines(connection) :
  line 7762 appears to contain an embedded nul
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  line 7763 appears to contain an embedded nul
Warning in readLines(connection) :
  line 7764 appears to contain an embedded nul
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  line 7766 appears to contain an embedded nul
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  line 7768 appears to contain an embedded nul
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  line 7769 appears to contain an embedded nul
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  line 7770 appears to contain an embedded nul
Warning in readLines(connection) :
  line 7771 appears to contain an embedded nul
Warning in grep(pattern = "^//", x = results) :
  input string 5557 is invalid in this locale
Warning in grep(pattern = "^//", x = results) :
  input string 7724 is invalid in this locale
Warning in grep(pattern = "^//", x = results) :
  input string 7764 is invalid in this locale
Error in gsub(x = suffixes, pattern = "*.", replacement = "", fixed = TRUE) : 
  input string 5022 is invalid in this locale
Calls: suffix_extract -> suffix_load -> gsub
Execution halted