Errors while running tests

[epsilon-0]

I'm trying to run the tests while packaging this for Gentoo and ran into failing tests

Start testing: Oct 15 12:41 -00
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1/7 Testing: unit_tests_built
1/7 Test: unit_tests_built
Command: "/usr/bin/cmake" "--build" "." "--target" "unit_tests" "--config" "Gentoo"
Directory: /var/tmp/portage/sci-mathematics/netgen-6.2.2008/work/netgen-6.2.2008_build/tests/catch/../..
"unit_tests_built" start time: Oct 15 12:41 -00
Output:
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[1/1] cd /var/tmp/portage/sci-mathematics/netgen-6.2.2008/work/netgen-6.2.2008_build && /usr/bin/cmake -DBDIR=/var/tmp/portage/sci-mathematics/netgen-6.2.2008/work/netgen-6.2.2008_build -P /var/tmp/portage/sci-mathematics/netgen-6.2.2008/work/netgen-6.2.2008/cmake/generate_version_file.cmake
-- Found Git: /usr/bin/git (found version "2.28.0") 
CMake Warning at /var/tmp/portage/sci-mathematics/netgen-6.2.2008/work/netgen-6.2.2008/cmake/generate_version_file.cmake:18 (MESSAGE):
  Could not determine git-version from source code - assuming 6.2.0.0


<end of output>
Test time =   0.03 sec
----------------------------------------------------------
Test Passed.
"unit_tests_built" end time: Oct 15 12:41 -00
"unit_tests_built" time elapsed: 00:00:00
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2/7 Testing: unit_archive
2/7 Test: unit_archive
Command: "/var/tmp/portage/sci-mathematics/netgen-6.2.2008/work/netgen-6.2.2008_build/tests/catch/test_archive"
Directory: /var/tmp/portage/sci-mathematics/netgen-6.2.2008/work/netgen-6.2.2008_build/tests/catch
"unit_archive" start time: Oct 15 12:41 -00
Output:
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terminate called after throwing an instance of 'std::invalid_argument'
  what():  stoi
<end of output>
Test time =   0.00 sec
----------------------------------------------------------
Test Failed.
"unit_archive" end time: Oct 15 12:41 -00
"unit_archive" time elapsed: 00:00:00
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3/7 Testing: unit_array
3/7 Test: unit_array
Command: "/var/tmp/portage/sci-mathematics/netgen-6.2.2008/work/netgen-6.2.2008_build/tests/catch/test_array"
Directory: /var/tmp/portage/sci-mathematics/netgen-6.2.2008/work/netgen-6.2.2008_build/tests/catch
"unit_array" start time: Oct 15 12:41 -00
Output:
----------------------------------------------------------
===============================================================================
All tests passed (37 assertions in 1 test case)

<end of output>
Test time =   0.00 sec
----------------------------------------------------------
Test Passed.
"unit_array" end time: Oct 15 12:41 -00
"unit_array" time elapsed: 00:00:00
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4/7 Testing: unit_symboltable
4/7 Test: unit_symboltable
Command: "/var/tmp/portage/sci-mathematics/netgen-6.2.2008/work/netgen-6.2.2008_build/tests/catch/test_symboltable"
Directory: /var/tmp/portage/sci-mathematics/netgen-6.2.2008/work/netgen-6.2.2008_build/tests/catch
"unit_symboltable" start time: Oct 15 12:41 -00
Output:
----------------------------------------------------------
terminate called after throwing an instance of 'std::invalid_argument'
  what():  stoi
<end of output>
Test time =   0.00 sec
----------------------------------------------------------
Test Failed.
"unit_symboltable" end time: Oct 15 12:41 -00
"unit_symboltable" time elapsed: 00:00:00
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5/7 Testing: unit_utils
5/7 Test: unit_utils
Command: "/var/tmp/portage/sci-mathematics/netgen-6.2.2008/work/netgen-6.2.2008_build/tests/catch/test_utils"
Directory: /var/tmp/portage/sci-mathematics/netgen-6.2.2008/work/netgen-6.2.2008_build/tests/catch
"unit_utils" start time: Oct 15 12:41 -00
Output:
----------------------------------------------------------
terminate called after throwing an instance of 'std::invalid_argument'
  what():  stoi
<end of output>
Test time =   0.00 sec
----------------------------------------------------------
Test Failed.
"unit_utils" end time: Oct 15 12:41 -00
"unit_utils" time elapsed: 00:00:00
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6/7 Testing: unit_version
6/7 Test: unit_version
Command: "/var/tmp/portage/sci-mathematics/netgen-6.2.2008/work/netgen-6.2.2008_build/tests/catch/test_version"
Directory: /var/tmp/portage/sci-mathematics/netgen-6.2.2008/work/netgen-6.2.2008_build/tests/catch
"unit_version" start time: Oct 15 12:41 -00
Output:
----------------------------------------------------------
===============================================================================
All tests passed (7 assertions in 1 test case)

<end of output>
Test time =   0.00 sec
----------------------------------------------------------
Test Passed.
"unit_version" end time: Oct 15 12:41 -00
"unit_version" time elapsed: 00:00:00
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I do have C++ catch installed so I am not sure what is going wrong here.

Thanks,
Aisha