Resolving dependencies...
Starting     string-conv-tests-0.1.1
Building     string-conv-tests-0.1.1
Failed to install string-conv-tests-0.1.1
Build log ( /home/builder/.cabal/logs/ghc-8.10.2/string-conv-tests-0.1.1-4mPIPGMkpBUCPFU6tjPLdk.log ):
cabal: Entering directory '/tmp/cabal-tmp-31806/string-conv-tests-0.1.1'
Configuring string-conv-tests-0.1.1...
Building string-conv-tests-0.1.1...
Warning: No documentation was generated as this package does not contain a
library. Perhaps you want to use the --executables, --tests, --benchmarks or
--foreign-libraries flags.
cabal: No executables and no library found. Nothing to do.

cabal: Leaving directory '/tmp/cabal-tmp-31806/string-conv-tests-0.1.1'
cabal: Error: some packages failed to install:
string-conv-tests-0.1.1-4mPIPGMkpBUCPFU6tjPLdk failed during the final install
step. The exception was:
ExitFailure 1