Ant's delete is unable to deal with files with non-ascii file names

mender.xml

@@ -27,7 +27,9 @@
   <exec executable="./make.bash" dir="${makedir}/src">
    <env key="GOROOT_BOOTSTRAP" path="${builddir}/go1.4"/>
   </exec>
-  <delete dir="${builddir}/go1.4"/>
+  <exec executable="rm" failonerror="true">
+   <arg line="-rf ${builddir}/go1.4"/>
+  </exec>
  </target>
 
  <target name="build-mender-artifact" depends="build-go">
@@ -44,7 +46,9 @@
   <exec executable="mv" dir="${builddir}" failonerror="true">
    <arg line="${builddir}/go/src/github.com/mendersoftware/mender-artifact/cli/mender-artifact/mender-artifact ${builddir}"/>
   </exec>
-  <delete dir="${builddir}/go"/>
+  <exec executable="rm" failonerror="true">
+   <arg line="-rf ${builddir}/go"/>
+  </exec>
   <antcall target="mount"/>
   <exec executable="bash" dir="${sysdir}" failonerror="true">
    <arg line="-c &quot;echo 'artifact_name=${ARTIFACT_NAME}-${BUILD_ID}' > ${sysdir}/etc/mender/artifact_info&quot;"/>
@@ -88,7 +92,9 @@
   <exec executable="mv" dir="${builddir}" failonerror="true">
    <arg line="${builddir}/go/src/github.com/mendersoftware/mender-artifact/cli/mender-artifact/mender-artifact ${builddir}"/>
   </exec>
-  <delete dir="${builddir}/go"/>
+  <exec executable="rm" failonerror="true">
+   <arg line="-rf ${builddir}/go"/>
+  </exec>
   <antcall target="mount"/>
   <loadfile property="ARTIFACT_NAME" srcFile="${sysdir}/etc/mender/artifact_info" failonerror="true">
     <filterchain>