Resolving dependencies...
Build profile: -w ghc-9.6.3 -O0
In order, the following will be built (use -v for more details):
 - doctest-exitcode-stdio-0.0 (lib:doctest-exitcode-stdio) (requires build)
 - non-empty-0.3.5 (lib:non-empty) (requires build)
 - countdown-numbers-game-0.0 (first run)
Starting     doctest-exitcode-stdio-0.0 (all, legacy fallback)
Starting     non-empty-0.3.5 (all, legacy fallback)
Building     non-empty-0.3.5 (all, legacy fallback)
Building     doctest-exitcode-stdio-0.0 (all, legacy fallback)
Installing   doctest-exitcode-stdio-0.0 (all, legacy fallback)
Installing   non-empty-0.3.5 (all, legacy fallback)
Completed    doctest-exitcode-stdio-0.0 (all, legacy fallback)
Completed    non-empty-0.3.5 (all, legacy fallback)
Configuring countdown-numbers-game-0.0...
Preprocessing test suite 'countdown-numbers-test' for countdown-numbers-game-0.0..
Building test suite 'countdown-numbers-test' for countdown-numbers-game-0.0..
[1 of 4] Compiling Solve            ( src/Solve.hs, /home/builder/builder-dir/build-cache/tmp-install/dist-newstyle/build/x86_64-linux/ghc-9.6.3/countdown-numbers-game-0.0/noopt/build/countdown-numbers-test/countdown-numbers-test-tmp/Solve.o )

src/Solve.hs:7:1: warning: [-Wunused-imports]
    The import of Data.Traversable is redundant
      except perhaps to import instances from Data.Traversable
    To import instances alone, use: import Data.Traversable()
  |
7 | import Data.Traversable (traverse)
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[2 of 4] Compiling Test.Utility     ( test/Test/Utility.hs, /home/builder/builder-dir/build-cache/tmp-install/dist-newstyle/build/x86_64-linux/ghc-9.6.3/countdown-numbers-game-0.0/noopt/build/countdown-numbers-test/countdown-numbers-test-tmp/Test/Utility.o )

test/Test/Utility.hs:14:1: warning: [-Wunused-imports]
    The import of Control.Applicative is redundant
      except perhaps to import instances from Control.Applicative
    To import instances alone, use: import Control.Applicative()
   |
14 | import Control.Applicative ((<$>))
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[3 of 4] Compiling Test.Solve       ( test/Test/Solve.hs, /home/builder/builder-dir/build-cache/tmp-install/dist-newstyle/build/x86_64-linux/ghc-9.6.3/countdown-numbers-game-0.0/noopt/build/countdown-numbers-test/countdown-numbers-test-tmp/Test/Solve.o )
[4 of 4] Compiling Main             ( test/TestMain.hs, /home/builder/builder-dir/build-cache/tmp-install/dist-newstyle/build/x86_64-linux/ghc-9.6.3/countdown-numbers-game-0.0/noopt/build/countdown-numbers-test/countdown-numbers-test-tmp/Main.o )
[5 of 5] Linking /home/builder/builder-dir/build-cache/tmp-install/dist-newstyle/build/x86_64-linux/ghc-9.6.3/countdown-numbers-game-0.0/noopt/build/countdown-numbers-test/countdown-numbers-test
Preprocessing executable 'countdown-numbers-solve' for countdown-numbers-game-0.0..
Building executable 'countdown-numbers-solve' for countdown-numbers-game-0.0..
[1 of 2] Compiling Solve            ( src/Solve.hs, /home/builder/builder-dir/build-cache/tmp-install/dist-newstyle/build/x86_64-linux/ghc-9.6.3/countdown-numbers-game-0.0/noopt/build/countdown-numbers-solve/countdown-numbers-solve-tmp/Solve.o )

src/Solve.hs:7:1: warning: [-Wunused-imports]
    The import of Data.Traversable is redundant
      except perhaps to import instances from Data.Traversable
    To import instances alone, use: import Data.Traversable()
  |
7 | import Data.Traversable (traverse)
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[2 of 2] Compiling Main             ( src/Main.hs, /home/builder/builder-dir/build-cache/tmp-install/dist-newstyle/build/x86_64-linux/ghc-9.6.3/countdown-numbers-game-0.0/noopt/build/countdown-numbers-solve/countdown-numbers-solve-tmp/Main.o )
[3 of 3] Linking /home/builder/builder-dir/build-cache/tmp-install/dist-newstyle/build/x86_64-linux/ghc-9.6.3/countdown-numbers-game-0.0/noopt/build/countdown-numbers-solve/countdown-numbers-solve
Running 1 test suites...
Test suite countdown-numbers-test: RUNNING...
Test suite countdown-numbers-test: PASS
Test suite logged to:
/home/builder/builder-dir/build-cache/tmp-install/reports/countdown-numbers-game-0.0.test
Error: cabal-3.10.2.1: Test coverage is only supported for packages with a
library component.

Error: cabal: Tests failed for countdown-numbers-game-0.0.