No they don't
and the message does say
cp: can't stat '/tmp/tcloop/jre8//bin' :No such file or directory
After boot the directories
/tmp/tcloop/jre8
and
/tmp/tcloop/jdk8
both exist, and are populated but there is no bin directory
There is a /tmp/tcloop/jre8/usr/local/lib directory however but no bin directory.
I'm not sure how to test whether jre8 is behaving properly after boot. I think it must be since I can use java to run jar files.