corrected the gitlab-ci yaml file

5 jobs for feature/cxx17 in 36 minutes and 23 seconds (queued for 15 minutes and 58 seconds)
latest
Status Job ID Name Coverage
  Test
passed #13922
dune-2.6 debian-10 gcc-8-17

00:17:16

failed #13923
dune-2.6 ubuntu-18.04 clang-6-17

00:01:16

passed #13924
dune-git debian-10 gcc-8-17

00:25:33

failed #13925
dune-git debian-9 gcc-6-14

00:04:07

failed #13926
dune-git ubuntu-18.04 clang-6-17

00:05:33

 
Name Stage Failure
failed
dune-git ubuntu-18.04 clang-6-17 Test
Status:    NOTRUN
Output:
Unable to find required file: /builds/amdis/amdis-core/build-cmake/test/UniqueBorderPartitionTest

JUnit report for CTest results written to /builds/amdis/amdis-core/junit/amdis-core-cmake.xml
--- Failed to build amdis ---
Terminating dunecontrol due to previous errors!
+ exit 1
ERROR: Job failed: exit code 1
failed
dune-git debian-9 gcc-6-14 Test
  CMakeLists.txt:13 (dune_project)


-- Configuring incomplete, errors occurred!
See also "/builds/amdis/amdis-core/build-cmake/CMakeFiles/CMakeOutput.log".
See also "/builds/amdis/amdis-core/build-cmake/CMakeFiles/CMakeError.log".
--- Failed to build amdis ---
Terminating dunecontrol due to previous errors!
ERROR: Job failed: exit code 1
failed
dune-2.6 ubuntu-18.04 clang-6-17 Test

--- amdis done ---
--- done ---
+ [[ -v install_result ]]
+ [[ -n 1 ]]
+ echo 'ERROR: Build failed'
ERROR: Build failed
+ exit 1
ERROR: Job failed: exit code 1