diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a9c63c31..bc86573f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -87,3 +87,30 @@ jobs:
         with:
           files: info.lcov
           token: ${{ secrets.CODECOV_TOKEN }}
+
+  end-to-end:
+    name: End-to-End Test (${{ matrix.xcode_version }})
+    runs-on: macos-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - xcode_version: "15.3"
+            uncaptured_output: 255
+          - xcode_version: "15.4"
+            uncaptured_output: 255
+          - xcode_version: "16.0"
+            uncaptured_output: 255
+          - xcode_version: "16.1"
+            uncaptured_output: 255
+    env:
+      BUILD_LOG: ${{ matrix.xcode_version }}.log
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/checkout@v4
+        with:
+          repository: "cpisciotta/GitHub-Issues-Browser"
+          path: "Demo"
+      - run: swift build
+      - run: set -euo pipefail && xcodebuild clean test -project 'Demo/GHIssues.xcodeproj' -scheme GHIssues -destination 'platform=iOS Simulator,name=iPhone 15 Pro' -derivedDataPath DerivedData CODE_SIGN_IDENTITY="" CODE_SIGNING_REQUIRED=NO CODE_SIGN_ENTITLEMENTS="" CODE_SIGNING_ALLOWED=NO ONLY_ACTIVE_ARCH=NO > ${{ env.BUILD_LOG }}
+      - run: ./.build/debug/ParsingCheck --file-path ${{ env.BUILD_LOG }} --uncaptured-output ${{ matrix.uncaptured_output }}
diff --git a/Package.swift b/Package.swift
index 4ccb4ae9..451a3e4d 100644
--- a/Package.swift
+++ b/Package.swift
@@ -36,6 +36,13 @@ let package = Package(
                 "XMLCoder",
             ]
         ),
+        .executableTarget(
+            name: "ParsingCheck",
+            dependencies: [
+                "XcbeautifyLib",
+                .product(name: "ArgumentParser", package: "swift-argument-parser"),
+            ]
+        ),
         .testTarget(
             name: "XcbeautifyLibTests",
             dependencies: ["XcbeautifyLib"],
diff --git a/Sources/ParsingCheck/ParsingCheck.swift b/Sources/ParsingCheck/ParsingCheck.swift
new file mode 100644
index 00000000..30596f86
--- /dev/null
+++ b/Sources/ParsingCheck/ParsingCheck.swift
@@ -0,0 +1,48 @@
+import ArgumentParser
+import Darwin
+import Foundation
+import XcbeautifyLib
+
+@main
+struct ParsingCheck: ParsableCommand {
+
+    @Option
+    var filePath: String
+
+    @Option
+    var uncapturedOutput: Int
+
+    enum ParsingCheckError: Error {
+        case dataReadError
+        case noData
+        case regression(Int)
+    }
+
+    func run() throws {
+        guard let data = FileManager.default.contents(atPath: filePath) else {
+            throw ParsingCheckError.noData
+        }
+
+        guard !data.isEmpty else {
+            throw ParsingCheckError.noData
+        }
+
+        var buildLog: [String] = String(decoding: data, as: UTF8.self)
+            .components(separatedBy: .newlines)
+
+        let parser = Parser()
+
+        var uncapturedOutput = 0
+
+        while !buildLog.isEmpty {
+            let line = buildLog.removeFirst()
+            if !line.isEmpty, parser.parse(line: line) == nil {
+                uncapturedOutput += 1
+            }
+        }
+
+        guard self.uncapturedOutput == uncapturedOutput else {
+            throw ParsingCheckError.regression(uncapturedOutput)
+        }
+    }
+}