hashcat 5.0.0 with Token length exception with sha1

[DanielG]

You are not using --username which tells hashcat to ignore the "foo:" part. Hashcat expects a list with just the hashes, no extra data before that. See https://hashcat.net/wiki/doku.php?id=example_hashes where you can see mode 100 only expects "b89eaac7e61417341b710b727768294d0e6a277b" and not "foo: b89eaac7e61417341b710b727768294d0e6a277b".

--edit: Also you are doing "echo bar | sha1sum" which will make a sha1sum of 'bar+newline' because echo automatically appends a newline. If you just want the sha1sum of 'bar' use "echo -n bar" to omit the newline.