Swift Package xcodebuild "error: Build input file cannot be found"

Hi! I'm currently developing a swift package for the first time. I was trying to setup CI to run my tests but ran into an error locally. I can run my tests just fine in Xcode, but when using the xcodebuild command line tool I get this error: "error: Build input file cannot be found:" Here's some additional info that may be useful.

Command

xcodebuild test -scheme Project -destination 'platform=macOS,arch=arm64' | xcpretty -s

Full output

--- xcodebuild: WARNING: Using the first of multiple matching destinations:
{ platform:macOS, arch:arm64, id:00006000-001658C63C23801E }
{ platform:macOS, arch:arm64, variant:Mac Catalyst, id:00006000-001658C63C23801E }
{ platform:macOS, arch:arm64, variant:DriverKit, id:00006000-001658C63C23801E }

❌ error: Build input file cannot be found: '/path/to/Project/Sources/Project/main.swift'. Did you forget to declare this file as an output of a script phase or custom build rule which produces it? (in target 'Project from project 'Project')



❌ error: Build input file cannot be found: '/path/to/Project/Sources/PRoject/main.swift'. Did you forget to declare this file as an output of a script phase or custom build rule which produces it? (in target 'Project from project 'Project')


Testing failed:
	Build input file cannot be found: '/path/to/Project/Sources/Project/main.swift'. Did you forget to declare this file as an output of a script phase or custom build rule which produces it?
	Testing cancelled because the build failed.

** TEST FAILED **


The following build commands failed:
	SwiftDriver\ Compilation\ Requirements Project normal arm64 com.apple.xcode.tools.swift.compiler (in target 'Project' from project 'Project')
	SwiftDriver\ Compilation Project normal arm64 com.apple.xcode.tools.swift.compiler (in target 'Project' from project 'Project')
(2 failures)

Package.swift

// swift-tools-version: 5.7

import PackageDescription

let package = Package(
  name: "Project",
  platforms: [
    .macOS(.v12)
  ],
  dependencies: [
    .package(url: "https://github.com/apple/swift-syntax.git", exact: "0.50700.1"),
    .package(url: "https://github.com/apple/swift-argument-parser.git", from: "1.2.1")
  ],
  targets: [
    .executableTarget(
      name: "Project",
      dependencies: [
        .product(name: "SwiftSyntax", package: "swift-syntax"),
        .product(name: "ArgumentParser", package: "swift-argument-parser")
      ]
    ),
    .testTarget(
      name: "ProjectTests",
      dependencies: ["Project"]),
  ]
)