Errors while building

[pappanunny]

Trying to build Fugu on macos catalina, xcode 10.2, but encountering 13 errors like these :

/Users/csg3206/Documents/Pk/myTools/Fugu-master/checkm8/PwnUSB.swift:30:52: error: expression resolves to an unused property
var device: SimpleUSB! { get { _device } }
^~~~~~~
/Users/csg3206/Documents/Pk/myTools/Fugu-master/USB/IOKitUSB.swift:45:34: error: expression resolves to an unused property
var deviceOpen: Bool { get { _deviceOpen } }
^~~~~~~~~~~
/Users/csg3206/Documents/Pk/myTools/Fugu-master/USB/IOKitUSB.swift:56:19: error: value of type 'IOUSBDeviceInterface' (aka 'IOUSBDeviceStruct') has no member 'USBGetSerialNumberStringIndex'
guard deviceInterface.USBGetSerialNumberStringIndex(deviceInterfacePtrPtr, &serialNumberIndex) == KERN_SUCCESS else {
^~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Users/csg3206/Documents/Pk/myTools/Fugu-master/USB/IOKitUSB.swift:82:18: error: value of type 'IOUSBDeviceInterface' (aka 'IOUSBDeviceStruct') has no member 'USBDeviceOpenSeize'; did you mean 'USBDeviceOpen'?
let kr = deviceInterface.USBDeviceOpenSeize(deviceInterfacePtrPtr)
^~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~

On using xcodebuild command to build, got the following additional error message:

** BUILD FAILED **
The following build commands failed:
CompileSwift normal x86_64
CompileSwiftSources normal x86_64 com.apple.xcode.tools.swift.compiler
(2 failures)

How can i get past these errors to successfully build Fugu?