Any news on this? Our PR pipeline is blocked without code coverage? We have always been using the following code in our PR pipeline for years and it worked. xcodebuild -sdk iphoneos -configuration dev -workspace MyProject.xcworkspace -scheme MyProject_Mu -destination 'platform=iOS Simulator,name=iPhone 8' test -derivedDataPath DerivedData CODE_SIGNING_ALLOWED=NO Normally, the above code generated .profraw and .profdata at folder: DerivedData/Build/ProfileData/41E444A5-D124-4222-82C2-EB33DCDBF2FC/ Until recently, our hosted agent upgraded from XCode 12 to XCode 13, the above code generates only the .profraw and ends with the error below warning: DerivedData/Build/ProfileData/41E444A5-D124-4222-82C2-EB33DCDBF2FC/B8590BD3-CF44-4308-95CF-20FBFFEF3568-24496.profraw: Failed to uncompress data (zlib) error: No profiles could be merged. We even tried to run this code hoping this would fix the issue: xcrun llvm-profdata merge DerivedData/Build/ProfileData/*/*.profraw -output generated.profdata But it does not work. We get the same error warning: DerivedData/Build/ProfileData/41E444A5-D124-4222-82C2-EB33DCDBF2FC/B8590BD3-CF44-4308-95CF-20FBFFEF3568-24496.profraw: Failed to uncompress data (zlib) error: No profiles could be merged. Now our PR pipeline is stuck and we can't work because this script is needed to generate unit test coverage data. And the pipeline is always failing.