diff --git a/.github/workflows/build-and-test.yml b/.github/workflows/build-and-test.yml
index 3f6a186..cd49a70 100644
--- a/.github/workflows/build-and-test.yml
+++ b/.github/workflows/build-and-test.yml
@@ -25,4 +25,5 @@ jobs:
           scheme: AsyncImageView
           platform: iOS
           action: test
+          warnings-as-errors: false
           verbosity: xcbeautify
diff --git a/AsyncImageViewTests/CachingSpec.swift b/AsyncImageViewTests/CachingSpec.swift
index 4aeb97d..b7f7127 100644
--- a/AsyncImageViewTests/CachingSpec.swift
+++ b/AsyncImageViewTests/CachingSpec.swift
@@ -142,7 +142,7 @@ class RenderDataTypeCacheSubdirectorySpec: QuickSpec {
 	}
 }
 
-extension String: DataFileType {
+extension String: @retroactive DataFileType {
 	public var subdirectory: String? {
 		return "\(self.count)"
 	}
@@ -152,7 +152,7 @@ extension String: DataFileType {
 	}
 }
 
-extension String: NSDataConvertible {
+extension String: @retroactive NSDataConvertible {
 	public init?(data: Data) {
 		self.init(data: data, encoding: String.encoding)
 	}
diff --git a/AsyncImageViewTests/MulticastedRendererSpec.swift b/AsyncImageViewTests/MulticastedRendererSpec.swift
index 710acaf..c54eca2 100644
--- a/AsyncImageViewTests/MulticastedRendererSpec.swift
+++ b/AsyncImageViewTests/MulticastedRendererSpec.swift
@@ -34,7 +34,7 @@ class MulticastedRendererSpec: QuickSpec {
 				}
 
 				func getImageForData(_ data: TestData, _ size: CGSize) -> ImageResult? {
-					return try? getProducerForData(data, size)
+					return getProducerForData(data, size)
 						.single()?
                         .get()
 				}
@@ -56,8 +56,8 @@ class MulticastedRendererSpec: QuickSpec {
 					let result2 = getProducerForData(data, size)
 
 					// Starting the producers should yield the same image.
-					guard let image1 = try? result1.single()?.get().image else { XCTFail("Failed to produce image"); return }
-					guard let image2 = try? result2.single()?.get().image else { XCTFail("Failed to produce image"); return }
+					guard let image1 = result1.single()?.get().image else { XCTFail("Failed to produce image"); return }
+					guard let image2 = result2.single()?.get().image else { XCTFail("Failed to produce image"); return }
 
 					expect(image1) === image2
 				}
@@ -82,7 +82,7 @@ class MulticastedRendererSpec: QuickSpec {
 				}
 
 				func getImageForData(_ data: TestData, _ size: CGSize) -> ImageResult? {
-					return try? getProducerForData(data, size)
+					return getProducerForData(data, size)
 						.single()?
 						.get()
 				}