Cycle detected while building.

[HarshitDaftary]

When i run Swift build command, I face following error

:0: error: cycle detected while building: command '<MySQL>' -> node '/home/ubuntu/Projects/Project3/MySQL/.build/debug/UnitTests' -> command '<UnitTests>' -> node '/home/ubuntu/Projects/Project3/MySQL/.build/debug/MySQL.o/Sources/UnitTests/main.swift.o' -> command '<UnitTests-swiftc>' -> node '<MySQL>' -> command '<MySQL>' :0: error: build had 1 command failures error: exit(1): ["/home/ubuntu/swift/swift2.2/usr/bin/swift-build-tool", "-f", "/home/ubuntu/Projects/Project3/MySQL/.build/debug/MySQL.o/llbuild.yaml"]