Failing to load coverage about slather HOT 4 OPEN

This might be because of how my workspace is setup, but whenever I run slather I get error: Failed to load coverage .... no coverage data found. I know there is coverage, because if I open the xcresults, I see all the coverage data.

My project has a testing harness workspace that contains all the frameworks to be tested which are pulled in a submodules. The framework projects themselves have the tests in them, but the testing harness contains a project that has all the test plans.

Here is the full error message, any thoughts?

<user>@<machine> Debug % slather coverage -s --scheme <project name>NoHardwareTests --workspace /Users/<user>/Projects/<project name>-Harness/<project name>Harness.xcworkspace /Users/<user>/Projects/<project name>-Harness/<project name>TestHarness/<project name>TestHarness.xcodeproj
Slathering...
error: Failed to load coverage: '/Users/<user>/Library/Developer/Xcode/DerivedData/<project name>Harness-czjbpsoximqkdwftaumjsowuxllm/Build/Products/Debug/<project name>TestHarnessUnitTests.xctest/Contents/MacOS/<project name>TestHarnessUnitTests': No coverage data found
error: Could not load coverage information
/Users/<user>/.rubies/ruby-3.1.4/lib/ruby/3.1.0/json/common.rb:216:in `parse': 859: unexpected token at '' (JSON::ParserError)
	from /Users/<user>/.rubies/ruby-3.1.4/lib/ruby/3.1.0/json/common.rb:216:in `parse'
	from /Users/<user>/.gem/ruby/3.1.4/gems/slather-2.7.4/lib/slather/project.rb:135:in `pathnames_per_binary'
	from /Users/<user>/.gem/ruby/3.1.4/gems/slather-2.7.4/lib/slather/project.rb:124:in `block in profdata_coverage_files'
	from /Users/<user>/.gem/ruby/3.1.4/gems/slather-2.7.4/lib/slather/project.rb:123:in `each'
	from /Users/<user>/.gem/ruby/3.1.4/gems/slather-2.7.4/lib/slather/project.rb:123:in `profdata_coverage_files'
	from /Users/<user>/.gem/ruby/3.1.4/gems/slather-2.7.4/lib/slather/project.rb:98:in `coverage_files'
	from /Users/<user>/.gem/ruby/3.1.4/gems/slather-2.7.4/lib/slather/coverage_service/simple_output.rb:17:in `post'
	from /Users/<user>/.gem/ruby/3.1.4/gems/slather-2.7.4/lib/slather/command/coverage_command.rb:101:in `post'
	from /Users/<user>/.gem/ruby/3.1.4/gems/slather-2.7.4/lib/slather/command/coverage_command.rb:61:in `execute'
	from /Users/<user>/.gem/ruby/3.1.4/gems/clamp-1.3.2/lib/clamp/command.rb:66:in `run'
	from /Users/<user>/.gem/ruby/3.1.4/gems/clamp-1.3.2/lib/clamp/subcommand/execution.rb:18:in `execute'
	from /Users/<user>/.gem/ruby/3.1.4/gems/clamp-1.3.2/lib/clamp/command.rb:66:in `run'
	from /Users/<user>/.gem/ruby/3.1.4/gems/clamp-1.3.2/lib/clamp/command.rb:140:in `run'
	from /Users/<user>/.gem/ruby/3.1.4/gems/slather-2.7.4/bin/slather:17:in `<top (required)>'
	from /Users/<user>/.gem/ruby/3.1.4/bin/slather:25:in `load'
	from /Users/<user>/.gem/ruby/3.1.4/bin/slather:25:in `<main>'

edit: this is on Xcode 15 if it matters. It also doesn't seem to work on Xcode 14.

Same issue for me, starting from Xcode 14.3.x

I'm using a fastlane file with slather configuration

Do you have some idea?

from slather.

I am also experiencing this issue. Would love to hear how I can be of help with debugging this issue.

from slather.

Have found a solution now?

from slather.

Not sure what @roballie is seeing, but I think everyone else posting here is seeing #541

That is a change in xcode 14.3+ upstream of slather that can't be fixed in slather; you'll need to rebuild all of your apps and upstream dependencies with xcode 14.3+. #541 (comment)

from slather.