searching for 'user(anazarov) and date("2015-8-1 to 2016-1-1")'

Assuming revset expression search. Use literal keyword search instead.

age author description
Tue, 15 Dec 2015 13:50:11 -0800 anazarov 8145102: new module graph tests
Wed, 16 Sep 2015 14:32:15 -0700 anazarov new tests
Tue, 11 Aug 2015 16:37:01 -0700 anazarov New javac tests