Hello. Do not start commit subject with capital letter after ‘:’.
Fixed.
Also, I don’t see your branch at remote repository:
you should push it before sending patch
(in order to check Travis status, at least).
Pushed. https://github.com/tarantool/tarantool/tree/sb/scip-scan-fix 
The limit for commit message is 72 chars…
Just reminding you.
I am confused. 72 chars is a limit for the whole commit
message? 
Just enumerate with comma:
Closes #xxxx, #xxxx
Ok.
Put here link to the branch and link to the issue
Ok.
Make sure that code fits into 80 chars. Now I can’t check it,
since you haven’t pushed your branch.
I am confused again. What is this 80-chars constraint about?
I would add to the name of test number of issue:
gh-xxxx-skip-scan.test.lua

Or, if it covers several issues, put comments before
test cases indicating number of issue it belongs to.
Fxd.
Consider formatting of curly braces.
Fxd.

--
Ivan Koptelov