Build Timeout plugin does not mark build as failed even when option is selected. The build is aborted (grey) instead of failed (red)

Configuration:

<buildWrappers>
<hudson.plugins.build__timeout.BuildTimeoutWrapper>
<timeoutMinutes>3</timeoutMinutes>
<failBuild>true</failBuild>
</hudson.plugins.build__timeout.BuildTimeoutWrapper>
</buildWrappers>

Console output:

Started by user pickgr
Building on master
No emails were triggered.
[workspace] $ /bin/bash -xe /tmp/tomcat6-tmp/hudson6264385044870732732.sh
+ hostname
srsdclljkns01
+ echo 'This is a test build'
This is a test build
+ sleep 300
Build timed out (after 3 minutes). Marking the build as failed.
/tmp/tomcat6-tmp/hudson6264385044870732732.sh: line 4: 2656 Terminated sleep 300
No emails were triggered.
Finished: ABORTED