Can't build

[ulymarins]

Hello, I'm not able to build using mvn clean verify. Any thoughts? Stacktrace below:

uly@uly-Inspiron-3647:~/workspace/external/oath$ mvn clean verify
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO] 
[INFO] OATH Project
[INFO] OATH OTP
[INFO] OATH OTP Key Provisioning
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building OATH Project 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ oath-parent ---
[INFO] 
[INFO] >>> maven-source-plugin:2.3:jar (attach-sources) > generate-sources @ oath-parent >>>
[INFO] 
[INFO] <<< maven-source-plugin:2.3:jar (attach-sources) < generate-sources @ oath-parent <<<
[INFO] 
[INFO] --- maven-source-plugin:2.3:jar (attach-sources) @ oath-parent ---
[INFO] 
[INFO] --- maven-javadoc-plugin:2.9.1:jar (attach-javadocs) @ oath-parent ---
[INFO] Not executing Javadoc as the project is not a Java classpath-capable package
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building OATH OTP 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ oath-otp ---
[INFO] Deleting /home/uly/workspace/external/oath/oath-otp/target
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO] 
[INFO] OATH Project ....................................... SUCCESS [  1.366 s]
[INFO] OATH OTP ........................................... FAILURE [  1.099 s]
[INFO] OATH OTP Key Provisioning .......................... SKIPPED
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2.634 s
[INFO] Finished at: 2016-12-08T13:28:18-02:00
[INFO] Final Memory: 15M/216M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-clean-plugin:2.5:clean (default-clean) on project oath-otp: Failed to clean project: Failed to delete /home/uly/workspace/external/oath/oath-otp/target/test-classes/com/lochbridge/oath/otp/TestTOTPBuilder.class -> [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
[ERROR] 
[ERROR] After correcting the problems, you can resume the build with the command
[ERROR]   mvn <goals> -rf :oath-otp

[gaviral]

That's weird it worked for me.
Can you share your full debug log?

[SaltOfTheFlame]

it's not the bug of the project
your tagret folder can not be deleted(probably, it is locked by some other process)
this issue can be closed