when generating coverage ,seeing issue "Invalid instrumentation profile data (bad magic)"

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ykhandelwal OP
Created Oct ’20
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We are using slather to generate the coverage report. We do see sometimes we are getting issues when generating the coverage and it fails with below error.

Based on the error , i see its comes from LLVM

Code Block language
 Failed to load coverage: Invalid instrumentation profile data (bad magic)
error: Could not load coverage information
/Users/**/.rvm/gems/ruby-2.7.0/gems/json-2.2.0/lib/json/common.rb:156: warning: Using the last argument as keyword parameters is deprecated
/Users//.rvm/gems/ruby-2.7.0/gems/json-2.2.0/lib/json/common.rb:156:in `parse': 785: unexpected token at '' (JSON::ParserError)
	from /Users//.rvm/gems/ruby-2.7.0/gems/json-2.2.0/lib/json/common.rb:156:in `parse'
	from /Users//.rvm/gems/ruby-2.7.0/gems/slather-2.4.7/lib/slather/project.rb:135:in `pathnames_per_binary'
	from /Users//.rvm/gems/ruby-2.7.0/gems/slather-2.4.7/lib/slather/project.rb:124:in `block in profdata_coverage_files'
	from /Users//.rvm/gems/ruby-2.7.0/gems/slather-2.4.7/lib/slather/project.rb:123:in `each'
	from /Users//.rvm/gems/ruby-2.7.0/gems/slather-2.4.7/lib/slather/project.rb:123:in `profdata_coverage_files'
	from /Users//.rvm/gems/ruby-2.7.0/gems/slather-2.4.7/lib/slather/project.rb:98:in `coverage_files'
	from /Users//.rvm/gems/ruby-2.7.0/gems/slather-2.4.7/lib/slather/coverage_service/cobertura_xml_output.rb:18:in `post'
	from /Users//.rvm/gems/ruby-2.7.0/gems/slather-2.4.7/lib/slather/command/coverage_command.rb:97:in `post'
	from /Users//.rvm/gems/ruby-2.7.0/gems/slather-2.4.7/lib/slather/command/coverage_command.rb:59:in `execute'
	from /Users//.rvm/gems/ruby-2.7.0/gems/clamp-1.3.1/lib/clamp/command.rb:66:in `run'
	from /Users//.rvm/gems/ruby-2.7.0/gems/clamp-1.3.1/lib/clamp/subcommand/execution.rb:18:in `execute'
	from /Users//.rvm/gems/ruby-2.7.0/gems/clamp-1.3.1/lib/clamp/command.rb:66:in `run'
	from /Users//.rvm/gems/ruby-2.7.0/gems/clamp-1.3.1/lib/clamp/command.rb:140:in `run'
	from /Users//.rvm/gems/ruby-2.7.0/gems/slather-2.4.7/bin/slather:17:in `<top (required)>'
	from /Users//.rvm/gems/ruby-2.7.0/bin/slather:23:in `load'
	from /Users//.rvm/gems/ruby-2.7.0/bin/slather:23:in `<main>'
	from /Users//.rvm/gems/ruby-2.7.0/bin/ruby_executable_hooks:24:in `eval'
	from /Users/**/.rvm/gems/ruby-2.7.0/bin/ruby_executable_hooks:24:in `<main>'

Has anyone seen that issue?
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when generating coverage ,seeing issue "Invalid instrumentation profile data (bad magic)"
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