Bug#919878: servlet-api: FTBFS

[Santiago Vila]

Package: src:servlet-api
Version: 4.0.1-2
Severity: serious
Tags: ftbfs

Dear maintainer:

I tried to build this package in buster but it failed:

--------------------------------------------------------------------------------
[...]
 debian/rules build-indep
dh build-indep
   dh_update_autotools_config -i
   dh_autoreconf -i
   dh_auto_configure -i
	mh_patchpoms -plibservlet-api-java --debian-build --keep-pom-version --maven-repo=/<<PKGBUILDDIR>>/debian/maven-repo
   dh_auto_build -i
	/usr/lib/jvm/default-java/bin/java -noverify -cp /usr/share/maven/boot/plexus-classworlds-2.x.jar -Dmaven.home=/usr/share/maven -Dmaven.multiModuleProjectDirectory=/<<PKGBUILDDIR>> -Dclassworlds.conf=/etc/maven/m2-debian.conf -Dproperties.file.manual=/<<PKGBUILDDIR>>/debian/maven.properties org.codehaus.plexus.classworlds.launcher.Launcher -s/etc/maven/settings-debian.xml -Ddebian.dir=/<<PKGBUILDDIR>>/debian -Dmaven.repo.local=/<<PKGBUILDDIR>>/debian/maven-repo --batch-mode package javadoc:jar javadoc:aggregate -DskipTests -Dnotimestamp=true -Dlocale=en_US
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.google.inject.internal.cglib.core.$ReflectUtils$1 (file:/usr/share/maven/lib/guice.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain)
WARNING: Please consider reporting this to the maintainers of com.google.inject.internal.cglib.core.$ReflectUtils$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[INFO] Scanning for projects...
[INFO] 
[INFO] ------------------< javax.servlet:javax.servlet-api >-------------------
[INFO] Building Java Servlet API 4.0.1
[INFO] --------------------------------[ jar ]---------------------------------
[INFO] 
[INFO] --- maven-resources-plugin:3.1.0:resources (default-resources) @ javax.servlet-api ---
[WARNING] Using platform encoding (ANSI_X3.4-1968 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] Copying 11 resources
[INFO] Copying 1 resource
[INFO] 
[INFO] --- maven-compiler-plugin:3.8.0:compile (default-compile) @ javax.servlet-api ---
[INFO] Changes detected - recompiling the module!
[WARNING] File encoding has not been set, using platform encoding ANSI_X3.4-1968, i.e. build is platform dependent!
[INFO] Compiling 77 source files to /<<PKGBUILDDIR>>/target/classes
[INFO] 
[INFO] --- maven-bundle-plugin:3.5.1:manifest (bundle-manifest) @ javax.servlet-api ---
[INFO] 
[INFO] --- maven-resources-plugin:3.1.0:testResources (default-testResources) @ javax.servlet-api ---
[WARNING] Using platform encoding (ANSI_X3.4-1968 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory /<<PKGBUILDDIR>>/src/test/resources
[INFO] 
[INFO] --- maven-compiler-plugin:3.8.0:testCompile (default-testCompile) @ javax.servlet-api ---
[INFO] No sources to compile
[INFO] 
[INFO] --- maven-surefire-plugin:2.22.1:test (default-test) @ javax.servlet-api ---
[INFO] Tests are skipped.
[INFO] 
[INFO] --- maven-jar-plugin:3.1.1:jar (default-jar) @ javax.servlet-api ---
[INFO] Building jar: /<<PKGBUILDDIR>>/target/javax.servlet-api-4.0.1.jar
[INFO] 
[INFO] --- maven-javadoc-plugin:3.0.1:jar (default) @ javax.servlet-api ---
[WARNING] Source files encoding has not been set, using platform encoding ANSI_X3.4-1968, i.e. build is platform dependent!
[INFO] Adding the --ignore-source-errors option
[INFO] 
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/SessionCookieConfig.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/ServletRequestAttributeListener.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/http/HttpSessionBindingEvent.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/http/HttpServletMapping.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/http/HttpSession.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/http/HttpFilter.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/http/HttpServletResponse.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/http/HttpSessionContext.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/http/HttpServletResponseWrapper.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/http/WebConnection.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/http/HttpSessionActivationListener.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/http/HttpServletRequestWrapper.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/http/HttpSessionListener.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/http/HttpServletRequest.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/http/HttpSessionAttributeListener.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/http/HttpSessionIdListener.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/http/HttpUpgradeHandler.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/http/HttpServlet.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/http/PushBuilder.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/http/HttpUtils.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/http/HttpSessionEvent.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/http/Part.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/http/MappingMatch.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/http/HttpSessionBindingListener.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/http/Cookie.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/ServletSecurityElement.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/Registration.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/ServletContextEvent.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/ServletResponse.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/ServletContext.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/ServletInputStream.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/HttpMethodConstraintElement.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/FilterRegistration.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/annotation/HandlesTypes.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/annotation/MultipartConfig.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/annotation/WebInitParam.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/annotation/WebFilter.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/annotation/HttpMethodConstraint.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/annotation/WebServlet.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/annotation/ServletSecurity.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/annotation/WebListener.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/annotation/HttpConstraint.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/ServletRequestAttributeEvent.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/ServletRegistration.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/ServletContextAttributeListener.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/DispatcherType.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/Servlet.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/MultipartConfigElement.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/UnavailableException.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/descriptor/JspPropertyGroupDescriptor.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/descriptor/TaglibDescriptor.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/descriptor/JspConfigDescriptor.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/AsyncContext.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/ServletContextListener.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/GenericFilter.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/ReadListener.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/ServletResponseWrapper.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/WriteListener.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/Filter.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/HttpConstraintElement.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/AsyncListener.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/ServletRequestListener.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/ServletOutputStream.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/SingleThreadModel.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/ServletContainerInitializer.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/FilterChain.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/SessionTrackingMode.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/ServletRequestWrapper.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/ServletException.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/ServletRequest.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/ServletContextAttributeEvent.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/FilterConfig.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/RequestDispatcher.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/ServletRequestEvent.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/GenericServlet.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/ServletConfig.java...
Loading source file /<<PKGBUILDDIR>>/src/main/java/javax/servlet/AsyncEvent.java...
Constructing Javadoc information...
Standard Doclet version 11.0.2
Building tree for all the packages and classes...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/annotation/HandlesTypes.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/annotation/HttpConstraint.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/annotation/HttpMethodConstraint.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/annotation/MultipartConfig.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/annotation/ServletSecurity.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/annotation/ServletSecurity.EmptyRoleSemantic.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/annotation/ServletSecurity.TransportGuarantee.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/annotation/WebFilter.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/annotation/WebInitParam.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/annotation/WebListener.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/annotation/WebServlet.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/descriptor/JspConfigDescriptor.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/descriptor/JspPropertyGroupDescriptor.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/descriptor/TaglibDescriptor.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/http/Cookie.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/http/HttpFilter.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/http/HttpServlet.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/http/HttpServletMapping.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/http/HttpServletRequest.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/http/HttpServletRequestWrapper.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/http/HttpServletResponse.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/http/HttpServletResponseWrapper.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/http/HttpSession.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/http/HttpSessionActivationListener.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/http/HttpSessionAttributeListener.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/http/HttpSessionBindingEvent.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/http/HttpSessionBindingListener.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/http/HttpSessionContext.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/http/HttpSessionEvent.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/http/HttpSessionIdListener.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/http/HttpSessionListener.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/http/HttpUpgradeHandler.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/http/HttpUtils.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/http/MappingMatch.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/http/Part.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/http/PushBuilder.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/http/WebConnection.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/AsyncContext.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/AsyncEvent.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/AsyncListener.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/DispatcherType.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/Filter.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/FilterChain.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/FilterConfig.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/FilterRegistration.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/FilterRegistration.Dynamic.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/GenericFilter.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/GenericServlet.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/HttpConstraintElement.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/HttpMethodConstraintElement.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/MultipartConfigElement.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/ReadListener.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/Registration.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/Registration.Dynamic.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/RequestDispatcher.html...
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Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/ServletConfig.html...
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Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/ServletRequestAttributeEvent.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/ServletRequestAttributeListener.html...
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Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/ServletRequestListener.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/ServletRequestWrapper.html...
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Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/ServletResponseWrapper.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/ServletSecurityElement.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/SessionCookieConfig.html...
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Copying file StandardDocFile[file:/<<PKGBUILDDIR>>/src/main/javadoc/javax.servlet-api.css] to file javax.servlet-api.css...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/class-use/SessionCookieConfig.html...
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Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/annotation/class-use/ServletSecurity.TransportGuarantee.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/annotation/class-use/ServletSecurity.EmptyRoleSemantic.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/annotation/class-use/WebListener.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/annotation/class-use/HttpConstraint.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/class-use/ServletRequestAttributeEvent.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/class-use/ServletRegistration.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/class-use/ServletRegistration.Dynamic.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/class-use/ServletContextAttributeListener.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/class-use/DispatcherType.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/class-use/Servlet.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/class-use/MultipartConfigElement.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/class-use/UnavailableException.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/descriptor/class-use/JspPropertyGroupDescriptor.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/descriptor/class-use/TaglibDescriptor.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/descriptor/class-use/JspConfigDescriptor.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/class-use/AsyncContext.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/class-use/ServletContextListener.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/class-use/GenericFilter.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/class-use/ReadListener.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/class-use/ServletResponseWrapper.html...
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Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/class-use/Filter.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/class-use/HttpConstraintElement.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/class-use/AsyncListener.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/class-use/ServletRequestListener.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/class-use/ServletOutputStream.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/class-use/SingleThreadModel.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/class-use/ServletContainerInitializer.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/class-use/FilterChain.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/class-use/SessionTrackingMode.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/class-use/ServletRequestWrapper.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/class-use/ServletException.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/class-use/ServletRequest.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/class-use/ServletContextAttributeEvent.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/class-use/FilterConfig.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/class-use/RequestDispatcher.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/class-use/ServletRequestEvent.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/class-use/GenericServlet.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/class-use/ServletConfig.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/class-use/AsyncEvent.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/package-use.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/annotation/package-use.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/descriptor/package-use.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/javax/servlet/http/package-use.html...
Building index for all the packages and classes...
Generating /<<PKGBUILDDIR>>/target/apidocs/overview-tree.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/index-all.html...
Building index for all classes...
Generating /<<PKGBUILDDIR>>/target/apidocs/allclasses-index.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/allpackages-index.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/deprecated-list.html...
Building index for all classes...
Generating /<<PKGBUILDDIR>>/target/apidocs/allclasses.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/allclasses.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/index.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/overview-summary.html...
Generating /<<PKGBUILDDIR>>/target/apidocs/help-doc.html...
Note: Custom tags that could override future standard tags:  @implSpec. To avoid potential overrides, use at least one period character (.) in custom tag names.
1 error
[INFO] 
[INFO] ------------------------------------------------------------------------
[INFO] Skipping Java Servlet API
[INFO] This project has been banned from the build due to previous failures.
[INFO] ------------------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  32.904 s
[INFO] Finished at: 2019-01-20T04:49:44Z
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-javadoc-plugin:3.0.1:jar (default) on project javax.servlet-api: MavenReportException: Error while generating Javadoc: 
[ERROR] Exit code: 1 - javadoc: error - The code being documented uses modules but the packages defined in https://docs.oracle.com/javase/8/docs/api/ are in the unnamed module.
[ERROR] 
[ERROR] Command line was: /usr/lib/jvm/java-11-openjdk-amd64/bin/javadoc @options @argfile
[ERROR] 
[ERROR] Refer to the generated Javadoc files in '/<<PKGBUILDDIR>>/target/apidocs' dir.
[ERROR] -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
dh_auto_build: /usr/lib/jvm/default-java/bin/java -noverify -cp /usr/share/maven/boot/plexus-classworlds-2.x.jar -Dmaven.home=/usr/share/maven -Dmaven.multiModuleProjectDirectory=/<<PKGBUILDDIR>> -Dclassworlds.conf=/etc/maven/m2-debian.conf -Dproperties.file.manual=/<<PKGBUILDDIR>>/debian/maven.properties org.codehaus.plexus.classworlds.launcher.Launcher -s/etc/maven/settings-debian.xml -Ddebian.dir=/<<PKGBUILDDIR>>/debian -Dmaven.repo.local=/<<PKGBUILDDIR>>/debian/maven-repo --batch-mode package javadoc:jar javadoc:aggregate -DskipTests -Dnotimestamp=true -Dlocale=en_US returned exit code 1
make: *** [debian/rules:6: build-indep] Error 2
dpkg-buildpackage: error: debian/rules build-indep subprocess returned exit status 2
--------------------------------------------------------------------------------

(The above is just how the build ends and not necessarily the most relevant part)

The build was made in my autobuilder with "dpkg-buildpackage -A"
and it also fails here:

https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/servlet-api.html

where you can get a full build log if you need it.

If this is really a bug in one of the build-depends, please use reassign and affects,
so that this is still visible in the BTS web page for this package.

Thanks.