Raise an error when bitclust crashed

Author: sorah

system/bc-static-all

@@ -30,7 +30,7 @@ def create_document(version)
          "--fs-casesensitive",
          "--canonical-base-url=https://docs.ruby-lang.org/ja/latest/",
          "--tracking-id=UA-620926-3",
-         "--quiet")
+         "--quiet") or raise
   system("rsync", "-acvi", "--no-times", "--delete", "/var/rubydoc/tmp/#{version}", DOC_ROOT) or raise
   system("rm", "-rf", "/var/rubydoc/tmp/#{version}") or raise
   system('./system/fastly-purge-key', '--soft', "ja/#{version}")