Error while creating a catkin workspace

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I am using Ubuntu 14.04, ROS Indigo. I am getting the following catkin_make error, and I am not sure how to fix that -

-- The C compiler identification is GNU 4.8.5
-- The CXX compiler identification is GNU 4.8.5
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Using CATKIN_DEVEL_PREFIX: /home/ubuntu/dl_workspace/devel
-- Using CMAKE_PREFIX_PATH: /opt/ros/indigo
-- This workspace overlays: /opt/ros/indigo
-- Found PythonInterp: /home/ubuntu/anaconda2/bin/python (found version "2.7.13") 
-- Using PYTHON_EXECUTABLE: /home/ubuntu/anaconda2/bin/python
-- Using Debian Python package layout
-- Using empy: /usr/bin/empy
-- Using CATKIN_ENABLE_TESTING: ON
-- Call enable_testing()
-- Using CATKIN_TEST_RESULTS_DIR: /home/ubuntu/dl_workspace/build/test_results
-- Looking for include file pthread.h
-- Looking for include file pthread.h - found
-- Looking for pthread_create
-- Looking for pthread_create - not found
-- Looking for pthread_create in pthreads
-- Looking for pthread_create in pthreads - not found
-- Looking for pthread_create in pthread
-- Looking for pthread_create in pthread - found
-- Found Threads: TRUE  
-- Found gtest sources under '/usr/src/gtest': gtests will be built
-- Using Python nosetests: /usr/bin/nosetests-2.7
Traceback (most recent call last):
  File "/opt/ros/indigo/share/catkin/cmake/parse_package_xml.py", line 107, in <module>
    main()
  File "/opt/ros/indigo/share/catkin/cmake/parse_package_xml.py", line 99, in main
    package = parse_package(args.package_xml)
  File "/home/ubuntu/anaconda2/lib/python2.7/site-packages/catkin_pkg/package.py", line 317, in parse_package
    return parse_package_string(f.read(), filename)
  File "/home/ubuntu/anaconda2/lib/python2.7/site-packages/catkin_pkg/package.py", line 450, in parse_package_string
    raise InvalidPackage('Error(s) in %s:%s' % (filename, ''.join(['\n- %s' % e for e in errors])))
catkin_pkg.package.InvalidPackage: Invalid package manifest "/opt/ros/indigo/share/catkin/cmake/../package.xml": Error(s) in /opt/ros/indigo/share/catkin/cmake/../package.xml:
- The manifest must not contain the following tags: depend, build_export_depend, buildtool_export_depend
CMake Error at /opt/ros/indigo/share/catkin/cmake/safe_execute_process.cmake:11 (message):
  execute_process(/home/ubuntu/anaconda2/bin/python
  "/opt/ros/indigo/share/catkin/cmake/parse_package_xml.py"
  "/opt/ros/indigo/share/catkin/cmake/../package.xml"
  "/home/ubuntu/dl_workspace/build/catkin/catkin_generated/version/package.cmake")
  returned error code 1
Call Stack (most recent call first):
  /opt/ros/indigo/share/catkin/cmake/catkin_package_xml.cmake:63 (safe_execute_process)
  /opt/ros/indigo/share/catkin/cmake/all.cmake:151 (_catkin_package_xml)
  /opt/ros/indigo/share/catkin/cmake/catkinConfig.cmake:20 (include)
  CMakeLists.txt:52 (find_package)


-- Configuring incomplete, errors occurred!
See also "/home/ubuntu/dl_workspace/build/CMakeFiles/CMakeOutput.log".
See also "/home/ubuntu/dl_workspace/build/CMakeFiles/CMakeError.log".
Invoking "cmake" failed

Kindly help!