Swift test fails on cli on new project

swift test fails on a new command line project without any changes. I did the following steps: $ mkdir swift_testing $ cd swift_testing $ swift package init --name TestingDemo --type executable $ swift test Expectation: The created tests run and show test failures or success on the command line. Observation: The following cryptic errors are printed: Building for debugging... error: emit-module command failed with exit code 1 (use -v to see invocation) /Users/dom/Documents/ablage/swift_test...