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Maven Build Success, but no result in target folder

For starters, I have not worked with Maven much at all.
I had everything working except for the version not being specified, but when I did specify the Maven version in the pom.xml, it still didn't work.
Note: Every run showed "Build Success" but none put a completed jar file in the target folder, which is what I thought should have happened.
Here is my output from eclipse:
[INFO] Scanning for projects...
[INFO]
[INFO] ---------------< TromboneSMP:VoluntaryPullFromEternity >----------------
[INFO] Building VoluntaryPullFromEternity 0.0.1-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) # VoluntaryPullFromEternity ---
[WARNING] Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] Copying 1 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.6.1:compile (default-compile) # VoluntaryPullFromEternity ---
[INFO] Changes detected - recompiling the module!
[WARNING] File encoding has not been set, using platform encoding Cp1252, i.e. build is platform dependent!
[INFO] Compiling 1 source file to C:\Users\Roboverse\eclipse-workspace\VoluntaryPullFromEternity\target\classes
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) # VoluntaryPullFromEternity ---
[WARNING] Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.6.1:testCompile (default-testCompile) # VoluntaryPullFromEternity ---
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] --- maven-surefire-plugin:2.12.4:test (default-test) # VoluntaryPullFromEternity ---
[INFO]
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) # VoluntaryPullFromEternity ---
[INFO] Building jar: C:\Users\Roboverse\eclipse-workspace\VoluntaryPullFromEternity\target\VoluntaryPullFromEternity-0.0.1-SNAPSHOT.jar
[INFO]
[INFO] --- maven-install-plugin:2.4:install (default-install) # VoluntaryPullFromEternity ---
[INFO] Installing C:\Users\Roboverse\eclipse-workspace\VoluntaryPullFromEternity\target\VoluntaryPullFromEternity-0.0.1-SNAPSHOT.jar to C:\Users\Roboverse\.m2\repository\TromboneSMP\VoluntaryPullFromEternity\0.0.1-SNAPSHOT\VoluntaryPullFromEternity-0.0.1-SNAPSHOT.jar
[INFO] Installing C:\Users\Roboverse\eclipse-workspace\VoluntaryPullFromEternity\pom.xml to C:\Users\Roboverse\.m2\repository\TromboneSMP\VoluntaryPullFromEternity\0.0.1-SNAPSHOT\VoluntaryPullFromEternity-0.0.1-SNAPSHOT.pom
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 4.045 s
[INFO] Finished at: 2021-03-01T18:46:45-05:00
[INFO] ------------------------------------------------------------------------
Here is my pom.xml:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>TromboneSMP</groupId>
<artifactId>VoluntaryPullFromEternity</artifactId>
<version>0.0.1-SNAPSHOT</version>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.6.1</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>spigot-repo</id>
<url>https://hub.spigotmc.org/nexus/content/repositories/public/</url>
</repository>
</repositories>
<dependencies>
<dependency>
<groupId>org.spigotmc</groupId>
<artifactId>spigot-api</artifactId>
<version>1.16.4-R0.1-SNAPSHOT</version><!--change this value depending on the version-->
<type>jar</type>
<scope>provided</scope>
</dependency>
</dependencies>
</project>

The output says
Building jar: C:\Users\Roboverse\eclipse-workspace\VoluntaryPullFromEternity\target\VoluntaryPullFromEternity-0.0.1-SNAPSHOT.jar
So if you do not see a JAR in target, you probably need to refresh your Eclipse. Have a look in the Windows Explorer (or some Linux equivalent) if you can find the file.

Running Maven Tests

I am learning Java, part of the courseware is Maven.
I have created a simple Maven project. And in the test class I have added the following code:
package maventest2;
import org.junit.Test;
import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Tag;
public class firstclass {
#Tag("FirstTests")
#DisplayName("This is the first group test I working on")
#Test
public void someTest() {
System.out.println("This in some test running");
}
}
When I run mvn test command I get the following:
Microsoft Windows [Version 10.0.18363.1256]
(c) 2019 Microsoft Corporation. All rights reserved.
C:\Users\pawan\eclipse-workspace\maventest2>mvn test
[INFO] Scanning for projects...
[INFO]
[INFO] -----------------------< com.taskone:maventest2 >-----------------------
[INFO] Building maventest2 0.0.1-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) # maventest2 ---
[WARNING] Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) # maventest2 ---
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) # maventest2 ---
[WARNING] Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.1:testCompile (default-testCompile) # maventest2 ---
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] --- maven-surefire-plugin:3.0.0-M3:test (default-test) # maventest2 ---
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.139 s
[INFO] Finished at: 2020-12-19T23:32:34-05:00
[INFO] ------------------------------------------------------------------------
Why is the test not being run? When I use the option to Run As ->JUnit Test. It works fine and I get the passed result.
Please advice.
pom file:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.taskone</groupId>
<artifactId>maventest2</artifactId>
<version>0.0.1-SNAPSHOT</version>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>3.0.0-M3</version>
<configuration>
<includes>
<include>%regex[.*Test.*]</include>
</includes>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>junit</groupId> <!-- NOT org.junit here -->
<artifactId>junit-dep</artifactId>
<version>4.8.2</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-engine</artifactId>
<version>5.7.0</version>
<scope>test</scope>
</dependency>
</dependencies>
</project>
Directory structure of project
The test file is in src/test/java

Two reasons:
Your test class name doesn't match the regex you have in your surefire configuration. You have explicitly said that the class name needs to match *Test*
You are importing the #Test annotation from org.junit, not org.junit.jupiter.api.Test

Maven generating actual jar as .jar.original instead of .jar file

Basically I have a Maven Project and I am trying to generate a jar of my project using mvn clean compile package through spring tool suite using below pom.xml.
After the command is executed, I get 2 jar files generated in my target folder - {project-name}.jar & {project-name}.jar.original
The .jar file contains
Spring boot framework class files having this contents while the .jar.original file contains actual class files of my application.
Snapshot of target folder
I also tried using mvn clean install but no luck with it. Moreover, the only 1 file is installed which is useless for me, because it does not contain any class files of my application but contains spring framework classes.
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.commonporject</groupId>
<artifactId>commonporject</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>commonporject</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.0.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.ibm.db2.jcc</groupId>
<artifactId>db2jcc4</artifactId>
<version>10.1</version>
</dependency>
<!-- other dependencies -->
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<compilerVersion>1.8</compilerVersion>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
Console:
[INFO] Scanning for projects...
[INFO]
[INFO] ----------------------< com.commonporject:commonporject >----------------------
[INFO] Building commonporject 0.0.1-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
[INFO]
[INFO] --- maven-clean-plugin:3.1.0:clean (default-clean) # commonporject ---
[INFO] Deleting C:\Users\Aadil\Documents\workspace-spring-tool-suite-4-4.0.0.RELEASE\commonporject\target
[INFO]
[INFO] --- maven-resources-plugin:3.1.0:resources (default-resources) # commonporject ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 1 resource
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.8.0:compile (default-compile) # commonporject ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 6 source files to C:\Users\Aadil\Documents\workspace-spring-tool-suite-4-4.0.0.RELEASE\commonporject\target\classes
[INFO]
[INFO] --- maven-resources-plugin:3.1.0:resources (default-resources) # commonporject ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 1 resource
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.8.0:compile (default-compile) # commonporject ---
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] --- maven-resources-plugin:3.1.0:testResources (default-testResources) # commonporject ---
[INFO] Not copying test resources
[INFO]
[INFO] --- maven-compiler-plugin:3.8.0:testCompile (default-testCompile) # commonporject ---
[INFO] Not compiling test sources
[INFO]
[INFO] --- maven-surefire-plugin:2.22.1:test (default-test) # commonporject ---
[INFO] Tests are skipped.
[INFO]
[INFO] --- maven-jar-plugin:3.1.0:jar (default-jar) # commonporject ---
[INFO] Building jar: C:\Users\Aadil\Documents\workspace-spring-tool-suite-4-4.0.0.RELEASE\commonporject\target\commonporject-0.0.1-SNAPSHOT.jar
[INFO]
[INFO] --- spring-boot-maven-plugin:2.1.0.RELEASE:repackage (repackage) # commonporject ---
[INFO] Replacing main artifact C:\Users\Aadil\Documents\workspace-spring-tool-suite-4-4.0.0.RELEASE\commonporject\target\commonporject-0.0.1-SNAPSHOT.jar
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 7.706 s
[INFO] Finished at: 2018-11-04T12:28:37+05:30
[INFO] ------------------------------------------------------------------------

spring-boot-maven plugin by default uses the repackage goal which packages all dependencies mentioned in the pom file. When this happens, your project's classes and resources jar is renamed to "original".
Please refer the below documentation for more details about this plugin.
https://docs.spring.io/spring-boot/docs/current/reference/html/build-tool-plugins-maven-plugin.html

Maven servlet compile "All classes are up to date"

I'm new to maven and servlets but I'm absolutely at my wits end. It refuses to work at every single twist and turn and for some reason it says "Nothing to compile - all classes are up to date" eventhough I've changed everything there is to change.
This is my servlet:
#WebServlet("/HelloWorld")
public class HelloWorldServlet extends HttpServlet {
#Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {
response.setContentType("text/html");
response.setCharacterEncoding("UTF-8");
String hold = request.getParameter("text");
try(PrintWriter out = response.getWriter()) {
out.println("<!DOCTYPE html>");
out.println("<html>");
out.println("<body>");
out.println("<p>"+hold+"</p>");
out.println("</body>");
out.println("</html>");
}
}
}
This is my pom.xml:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>pxl.kits</groupId>
<artifactId>Webcomponents</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<properties>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<project.build.sourceEncoding>
UTF-8
</project.build.sourceEncoding>
</properties>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.0</version>
</plugin>
<plugin>
<groupId>org.codehaus.cargo</groupId>
<artifactId>cargo-maven2-plugin</artifactId>
<version>1.4.12</version>
<configuration>
<container>
<containerId>tomcat8x</containerId>
<type>installed</type>
<home>${env.TOMCAT_HOME}</home>
</container>
<configuration>
<type>existing</type>
<home>${env.TOMCAT_HOME}</home>
</configuration>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>javax</groupId>
<artifactId>javaee-web-api</artifactId>
<version>7.0</version>
<scope>provided</scope>
</dependency>
</dependencies>
</project>
And the command I use to run/debug:
mvn package cargo:deploy
Edit:
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building Webcomponents 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) # Webcomponents ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.0:compile (default-compile) #Webcomponents -
--
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources)#Webcomponents ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.0:testCompile (default-testCompile) #Webcomponents ---
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] --- maven-surefire-plugin:2.12.4:test (default-test) # Webcomponents ---
[INFO]
[INFO] --- maven-war-plugin:2.2:war (default-war) # Webcomponents ---
[INFO] Packaging webapp
[INFO] Assembling webapp [Webcomponents] in [C:\Users\Laurens\workspace\Webcompo
nents\target\Webcomponents-0.0.1-SNAPSHOT]
[INFO] Processing war project
[INFO] Copying webapp resources [C:\Users\Laurens\workspace\Webcomponents\src\ma
in\webapp]
[INFO] Webapp assembled in [41 msecs]
[INFO] Building war: C:\Users\Laurens\workspace\Webcomponents\target\Webcomponen
ts-0.0.1-SNAPSHOT.war
[INFO] WEB-INF\web.xml already added, skipping
[INFO]
[INFO] --- cargo-maven2-plugin:1.4.12:deploy (default-cli) # Webcomponents ---
[INFO] [edDeployerDeployMojo] Resolved container artifact org.codehaus.cargo:car
go-core-container-tomcat:jar:1.4.12 for container tomcat8x
[INFO] [stalledLocalDeployer] Deploying [C:\Users\Laurens\workspace\Webcomponent
s\target\Webcomponents-0.0.1-SNAPSHOT.war] to [C:\apache-tomcat-8.0.35/webapps].
..
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 3.063 s
[INFO] Finished at: 2016-06-01T16:15:00+02:00
[INFO] Final Memory: 12M/200M
[INFO] ------------------------------------------------------------------------

maven-jarsigner not executing during build

everyone. I'm trying to sign an Android APK with Maven Jarsigner. I followed the instructions on the maven-jarsigner site and told it to use my own keystore and verify. It doesn't look like the jarsigner plugin is even running from my pom.xml, much less verifying. I'm using Codenvy as my environment right now, so Maven console commands are unavailable to me. Any help would be appreciated. Here's my pom.xml:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.kealinghornets.mapsapplication</groupId>
<artifactId>mobile-android-java-basic</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>apk</packaging>
<name>MapsApp</name>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<platform.version>4.1.1.4</platform.version>
<android.plugin.version>3.8.0</android.plugin.version>
<android.sdk.platform.version>20</android.sdk.platform.version>
</properties>
<dependencies>
<dependency>
<groupId>com.google.android</groupId>
<artifactId>android</artifactId>
<version>${platform.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>com.google.android</groupId>
<artifactId>support-v4</artifactId>
<version>LATEST</version>
</dependency>
<dependency>
<groupId>com.jdroidframework</groupId>
<artifactId>google-play-services</artifactId>
<type>apklib</type>
<version>LATEST</version>
</dependency>
</dependencies>
<build>
<sourceDirectory>java</sourceDirectory>
<finalName>${project.artifactId}</finalName>
<defaultGoal>install</defaultGoal>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jarsigner-plugin</artifactId>
<version>1.4</version>
<executions>
<execution>
<id>sign</id>
<goals>
<goal>sign</goal>
</goals>
</execution>
<execution>
<id>verify</id>
<goals>
<goal>verify</goal>
</goals>
</execution>
</executions>
<configuration>
<keystore>${project.basedir}/mapsapp.keystore</keystore>
<storepass>maps_app</storepass>
<keypass>maps_app</keypass>
<alias>maps_app</alias>
<verbose>true</verbose>
<certs>true</certs>
</configuration>
</plugin>
<plugin>
<groupId>com.jayway.maven.plugins.android.generation2</groupId>
<artifactId>android-maven-plugin</artifactId>
<version>${android.plugin.version}</version>
<extensions>true</extensions>
<configuration>
<sign>
<debug>false</debug>
</sign>
</configuration>
</plugin>
</plugins>
</pluginManagement>
<plugins>
<plugin>
<groupId>com.jayway.maven.plugins.android.generation2</groupId>
<artifactId>android-maven-plugin</artifactId>
<configuration>
<sdk>
<platform>${android.sdk.platform.version}</platform>
</sdk>
</configuration>
</plugin>
</plugins>
</build>
</project>
Here's my Maven output from the build:
[INFO] Injecting source code into builder...
[INFO] Source code injection finished
[INFO] ------------------------------------------------------------------------
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building MapsApp 1.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) # mobile-android-java-basic ---
[INFO]
[INFO] --- android-maven-plugin:3.8.0:generate-sources (default-generate-sources) # mobile-android-java-basic ---
[DEBUG] Expanding: /home/codenvy/.m2/repository/com/jdroidframework/google-play-services/0.6.0/google-play-services-0.6.0.apklib into /media/ephemeral1/builder/maven/builds/build-4794906119007517519/androidmaps/target/unpack/apklibs/com.jdroidframework_google-play-services_apklib_0.6.0
[DEBUG] expand complete
[INFO] ANDROID-904-002: Found aidl files: Count = 0
[INFO] ANDROID-904-002: Found aidl files: Count = 0
[INFO] ANDROID-904-002: Found aidl files: Count = 0
[INFO] Manifest merging disabled. Using project manifest only
[INFO] /usr/local/android-sdk-linux/build-tools/21.1.1/aapt [package, -m, -J, /media/ephemeral1/builder/maven/builds/build-4794906119007517519/androidmaps/target/generated-sources/r, -M, /media/ephemeral1/builder/maven/builds/build-4794906119007517519/androidmaps/AndroidManifest.xml, -S, /media/ephemeral1/builder/maven/builds/build-4794906119007517519/androidmaps/res, -S, /media/ephemeral1/builder/maven/builds/build-4794906119007517519/androidmaps/target/unpack/apklibs/com.jdroidframework_google-play-services_apklib_0.6.0/res, --auto-add-overlay, -I, /usr/local/android-sdk-linux/platforms/android-20/android.jar]
[INFO] /usr/local/android-sdk-linux/build-tools/21.1.1/aapt [package, --non-constant-id, -m, -J, /media/ephemeral1/builder/maven/builds/build-4794906119007517519/androidmaps/target/generated-sources/r, --custom-package, com.google.android.gms, -M, /media/ephemeral1/builder/maven/builds/build-4794906119007517519/androidmaps/AndroidManifest.xml, -S, /media/ephemeral1/builder/maven/builds/build-4794906119007517519/androidmaps/res, -S, /media/ephemeral1/builder/maven/builds/build-4794906119007517519/androidmaps/target/unpack/apklibs/com.jdroidframework_google-play-services_apklib_0.6.0/res, --auto-add-overlay, -I, /usr/local/android-sdk-linux/platforms/android-20/android.jar]
[INFO]
[INFO] --- maven-resources-plugin:2.7:resources (default-resources) # mobile-android-java-basic ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory /media/ephemeral1/builder/maven/builds/build-4794906119007517519/androidmaps/src/main/resources
[INFO] skip non existing resourceDirectory /media/ephemeral1/builder/maven/builds/build-4794906119007517519/androidmaps/target/generated-sources/extracted-dependencies/src/main/resources
[INFO] skip non existing resourceDirectory /media/ephemeral1/builder/maven/builds/build-4794906119007517519/androidmaps/target/unpack/apklibs/com.jdroidframework_google-play-services_apklib_0.6.0/src
[INFO]
[INFO] --- android-maven-plugin:3.8.0:consume-aar (default-consume-aar) # mobile-android-java-basic ---
[INFO]
[INFO] --- maven-compiler-plugin:3.2:compile (default-compile) # mobile-android-java-basic ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 5 source files to /media/ephemeral1/builder/maven/builds/build-4794906119007517519/androidmaps/target/classes
[INFO]
[INFO] --- android-maven-plugin:3.8.0:proguard (default-proguard) # mobile-android-java-basic ---
[INFO]
[INFO] --- maven-resources-plugin:2.7:testResources (default-testResources) # mobile-android-java-basic ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory /media/ephemeral1/builder/maven/builds/build-4794906119007517519/androidmaps/src/test/resources
[INFO]
[INFO] --- maven-compiler-plugin:3.2:testCompile (default-testCompile) # mobile-android-java-basic ---
[INFO] No sources to compile
[INFO]
[INFO] --- maven-surefire-plugin:2.18.1:test (default-test) # mobile-android-java-basic ---
[INFO] No tests to run.
[INFO]
[INFO] --- android-maven-plugin:3.8.0:emma (default-emma) # mobile-android-java-basic ---
[INFO]
[INFO] --- android-maven-plugin:3.8.0:dex (default-dex) # mobile-android-java-basic ---
[INFO] /usr/local/jdk1.7.0_71/jre/bin/java [-Xmx1024M, -jar, /usr/local/android-sdk-linux/build-tools/21.1.1/lib/dx.jar, --dex, --output=/media/ephemeral1/builder/maven/builds/build-4794906119007517519/androidmaps/target/classes.dex, /media/ephemeral1/builder/maven/builds/build-4794906119007517519/androidmaps/target/classes, /home/codenvy/.m2/repository/com/jdroidframework/google-play-services/0.6.0/google-play-services-0.6.0.apklib, /home/codenvy/.m2/repository/android/google-play-services/r21/google-play-services-r21.jar, /home/codenvy/.m2/repository/com/google/android/support-v4/r7/support-v4-r7.jar]
[INFO]
[INFO] --- maven-jar-plugin:2.5:jar (default-jar) # mobile-android-java-basic ---
[INFO] Building jar: /media/ephemeral1/builder/maven/builds/build-4794906119007517519/androidmaps/target/mobile-android-java-basic.jar
[INFO]
[INFO] --- android-maven-plugin:3.8.0:apk (default-apk) # mobile-android-java-basic ---
[INFO] Enabling debug build for apk.
[INFO] /usr/local/android-sdk-linux/build-tools/21.1.1/aapt [package, -f, -M, /media/ephemeral1/builder/maven/builds/build-4794906119007517519/androidmaps/AndroidManifest.xml, -S, /media/ephemeral1/builder/maven/builds/build-4794906119007517519/androidmaps/res, -S, /media/ephemeral1/builder/maven/builds/build-4794906119007517519/androidmaps/target/unpack/apklibs/com.jdroidframework_google-play-services_apklib_0.6.0/res, --auto-add-overlay, -I, /usr/local/android-sdk-linux/platforms/android-20/android.jar, -F, /media/ephemeral1/builder/maven/builds/build-4794906119007517519/androidmaps/target/mobile-android-java-basic.ap_, --debug-mode]
[INFO]
[INFO] --- android-maven-plugin:3.8.0:internal-pre-integration-test (default-internal-pre-integration-test) # mobile-android-java-basic ---
[INFO] No InstrumentationRunner found - skipping tests
[INFO]
[INFO] --- android-maven-plugin:3.8.0:internal-integration-test (default-internal-integration-test) # mobile-android-java-basic ---
[INFO] No InstrumentationRunner found - skipping tests
[INFO]
[INFO] --- maven-install-plugin:2.5.2:install (default-install) # mobile-android-java-basic ---
[INFO] Installing /media/ephemeral1/builder/maven/builds/build-4794906119007517519/androidmaps/target/mobile-android-java-basic.apk to /home/codenvy/.m2/repository/org/kealinghornets/mapsapplication/mobile-android-java-basic/1.0-SNAPSHOT/mobile-android-java-basic-1.0-SNAPSHOT.apk
[INFO] Installing /media/ephemeral1/builder/maven/builds/build-4794906119007517519/androidmaps/pom.xml to /home/codenvy/.m2/repository/org/kealinghornets/mapsapplication/mobile-android-java-basic/1.0-SNAPSHOT/mobile-android-java-basic-1.0-SNAPSHOT.pom
[INFO] Installing /media/ephemeral1/builder/maven/builds/build-4794906119007517519/androidmaps/target/mobile-android-java-basic.jar to /home/codenvy/.m2/repository/org/kealinghornets/mapsapplication/mobile-android-java-basic/1.0-SNAPSHOT/mobile-android-java-basic-1.0-SNAPSHOT.jar
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 21.161s
[INFO] Finished at: Thu Feb 26 19:57:09 UTC 2015
[INFO] Final Memory: 22M/398M
[INFO] ------------------------------------------------------------------------
[INFO] Project androidmaps successfully build

The maven-jarsigner-plugin is declared inside pluginManagement section, so it will not be executed. pluginManagement is only supposed to be used to factor configuration on a plugin for different Maven modules.
Note that the android-maven-plugin is in fact executed because it it also declared inside the plugins section, so it inherits from the declaration made in pluginManagement.
You should move the maven-jarsigner-plugin code into the plugins section.