Reproducing the issue:

# Build using CMake
mkdir my_build
cd my_build
cmake -G Ninja ../.
ninja
# Execute format.sh
cd ../test/format
./format.sh
format.sh: format program "./t" not found

If you copy the binary t to the current directory, the following issue occurs:

format.sh: wt program "../../wt" not found 

Would be great to check if other scripts expect paths that may not work when building with CMake.

Definition of Done:

Be able to run test/format after building with CMake.