JDBC build broken by commit 9f9019b

Hi all,

Since commit 9f9019b that has been merged yesterday into master, build of
pgjdbc is broken. Here are more details of the failure:
$ ant -lib lib
[...]
compile:
[javac] /Users/ioltas/git/pgjdbc/build.xml:243: warning:
'includeantruntime' was not set, defaulting to build.sysclasspath=last; set
to false for repeatable builds
[javac] Compiling 174 source files to /Users/ioltas/git/pgjdbc/build
[javac]
/Users/ioltas/git/pgjdbc/org/postgresql/jdbc4/Jdbc4Connection.java:21:
org.postgresql.jdbc4.Jdbc4Connection is not abstract and does not override
abstract method haveMinimumServerVersion(int) in
org.postgresql.core.BaseConnection
[javac] public class Jdbc4Connection extends AbstractJdbc4Connection
implements java.sql.Connection
[javac] ^
[javac] Note: Some input files use or override a deprecated API.
[javac] Note: Recompile with -Xlint:deprecation for details.
[javac] Note: Some input files use unchecked or unsafe operations.
[javac] Note: Recompile with -Xlint:unchecked for details.
[javac] 1 error

BUILD FAILED
/Users/ioltas/git/pgjdbc/build.xml:213: The following error occurred while
executing this line:
/Users/ioltas/git/pgjdbc/build.xml:243: Compile failed; see the compiler
error output for details.

Total time: 3 seconds

Travis is complaining as well with the same error.
https://travis-ci.org/pgjdbc/pgjdbc
Regards,
--
Michael