我在Jenkins中安装了cobertura插件，并使用以下命令#go test -cover -p 1 $PKGS | go-junit-report > report.xml运行单元测试。我可以看到report.xml是用代码覆盖率创建的，但我在Jenkins控制台中看到了下面的错误。你能告诉我们问题出在哪里以及如何解决吗。
/bin/sh -xe /tmp/hudson1811800402022775798.sh
[Cobertura] Publishing Cobertura coverage report...
FATAL: Unable to find coverage results
java.io.IOException: <workspace>/report.xml is not a cobertura coverage report, please check your report pattern
at hudson.plugins.cobertura.CoberturaPublisher$ParseReportCallable.invoke(CoberturaPublisher.java:566)
at hudson.plugins.cobertura.CoberturaPublisher$ParseReportCallable.invoke(CoberturaPublisher.java:536)
at hudson.FilePath.act(FilePath.java:1018)
at hudson.FilePath.act(FilePath.java:996)
at hudson.plugins.cobertura.CoberturaPublisher.perform(CoberturaPublisher.java:343)
at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20)
at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:779)
at hudson.model.AbstractBuild$AbstractBuildExecution.performAllBuildSteps(AbstractBuild.java:720)
at hudson.model.Build$BuildExecution.post2(Build.java:185)
at hudson.model.AbstractBuild$AbstractBuildExecution.post(AbstractBuild.java:665)
at hudson.model.Run.execute(Run.java:1766)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
at hudson.model.ResourceController.execute(ResourceController.java:98)
at hudson.model.Executor.run(Executor.java:410)
[Cobertura] No coverage results were found using the pattern '**/report.xml' relative to '<some directory>'. Did you enter a pattern relative to the correct directory? Did you generate the XML report(s) for Cobertura?
Build step 'Publish Cobertura Coverage Report' changed build result to FAILURE
Finished: FAILURE
我已经按照以下步骤生成覆盖率报告（对于go语言）
gocovxml
使用以下命令安装gocov xml
$ go get github.com/axw/gocov/...
$ go get github.com/AlekSi/gocov-xml
如果你有多个包，执行go测试命令
gocov test $PKGS -p 1 | gocov-xml > report.xml
在publish-cobertura覆盖率报告（Jenkins中的后期构建操作）中提供report.xml
**/report.xml