NonRepeatableRequestException when executing goal tomcat6:deploy

Deployment to Tomcat fails after war upload. The war file does not appear on the server but the maven log marks the upload progess to completion. The application is not successfully deployed. Here is the relevant stack trace from the Maven debugging output:

org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.tomcat.maven:tomcat6-maven-plugin:2.0-SNAPSHOT:deploy (default-cli) on project web-integration: Cannot invoke Tomcat manager
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:217)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:319)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:534)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:592)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
Caused by: org.apache.maven.plugin.MojoExecutionException: Cannot invoke Tomcat manager
at org.apache.tomcat.maven.plugin.tomcat6.AbstractCatalinaMojo.execute(AbstractCatalinaMojo.java:152)
at org.apache.tomcat.maven.plugin.tomcat6.AbstractWarCatalinaMojo.execute(AbstractWarCatalinaMojo.java:71)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:107)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
... 19 more
Caused by: org.apache.http.client.ClientProtocolException
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:926)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:822)
at org.apache.tomcat.maven.common.deployer.TomcatManager.invoke(TomcatManager.java:718)
at org.apache.tomcat.maven.common.deployer.TomcatManager.deployImpl(TomcatManager.java:681)
at org.apache.tomcat.maven.common.deployer.TomcatManager.deploy(TomcatManager.java:363)
at org.apache.tomcat.maven.plugin.tomcat6.AbstractDeployWarMojo.deployWar(AbstractDeployWarMojo.java:87)
at org.apache.tomcat.maven.plugin.tomcat6.AbstractDeployMojo.invokeManager(AbstractDeployMojo.java:86)
at org.apache.tomcat.maven.plugin.tomcat6.AbstractCatalinaMojo.execute(AbstractCatalinaMojo.java:143)
... 22 more
Caused by: org.apache.http.client.NonRepeatableRequestException: Cannot retry request with a non-repeatable request entity.
at org.apache.http.impl.client.DefaultRequestDirector.tryExecute(DefaultRequestDirector.java:686)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:515)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:923)
... 29 more