diff --git a/buildSrc/src/main/groovy/VersionScanPlugin.groovy b/buildSrc/src/main/groovy/VersionScanPlugin.groovy
index 72d8f0abc8..46a41829d2 100644
--- a/buildSrc/src/main/groovy/VersionScanPlugin.groovy
+++ b/buildSrc/src/main/groovy/VersionScanPlugin.groovy
@@ -15,6 +15,7 @@ import org.eclipse.aether.spi.connector.RepositoryConnectorFactory
 import org.eclipse.aether.spi.connector.transport.TransporterFactory
 import org.eclipse.aether.transport.http.HttpTransporterFactory
 import org.eclipse.aether.version.Version
+import org.gradle.api.GradleException
 import org.gradle.api.Plugin
 import org.gradle.api.Project
 import org.objectweb.asm.ClassReader
@@ -138,41 +139,41 @@ class VersionScanPlugin implements Plugin<Project> {
       if (!verifyPresent.isEmpty() || !verifyMissing.isEmpty()) {
         def verifyVersionScan = project.task('verifyVersionScan') {
           description = "Validates that the configured classes and methods are only present where expected."
-          doLast {
-            // This may already be done by the report task, but repeating for good measure.
-            keyPresent.get().removeAll(allExclude)
-            keyMissing.get().removeAll(allInclude)
+        }
+        verifyVersionScan.doLast {
+          // This may already be done by the report task, but repeating for good measure.
+          keyPresent.get().removeAll(allExclude)
+          keyMissing.get().removeAll(allInclude)
 
-            assert keyPresent.get() != [] || keyMissing.get() != []
+          assert keyPresent.get() != [] || keyMissing.get() != []
 
-            def errors = []
-            for (String className : verifyPresent.keySet()) {
-              if (project.versionScan.scanMethods && verifyPresent.get(className) == null) {
-                throw new AssertionError("When 'scanMethods' is enabled, a method must be configured for '$className'")
-              } else if (!project.versionScan.scanMethods && verifyPresent.get(className) != null) {
-                throw new AssertionError("When 'scanMethods' is not enabled, configured method must be null for '$className'")
-              }
+          def errors = []
+          for (String className : verifyPresent.keySet()) {
+            if (project.versionScan.scanMethods && verifyPresent.get(className) == null) {
+              throw new AssertionError("When 'scanMethods' is enabled, a method must be configured for '$className'")
+            } else if (!project.versionScan.scanMethods && verifyPresent.get(className) != null) {
+              throw new AssertionError("When 'scanMethods' is not enabled, configured method must be null for '$className'")
+            }
 
-              String identifier = project.versionScan.scanMethods ? "$className|${verifyPresent.get(className)}" : className
-              if (!keyPresent.get().contains(identifier)) {
-                errors << "not a 'keyPresent' identifier: $identifier"
-              }
+            String identifier = project.versionScan.scanMethods ? "$className|${verifyPresent.get(className)}" : className
+            if (!keyPresent.get().contains(identifier)) {
+              errors << "not a 'keyPresent' identifier: $identifier"
             }
-            for (String className : verifyMissing) {
-              if (!keyMissing.get().contains(className)) {
-                errors << "not a 'keyMissing' identifier: $className"
-              }
-            }
-            errors.each {
-              System.err.println "Error for $group:$module - $it"
-            }
-            if (!errors.isEmpty()) {
-              throw new AssertionError("Version scan verification failed.\n" +
-                "Errors listed above are likely the result of a new module " +
-                "being published to Maven, not a code change in this repo.\n" +
-                "This does mean a fix should be made though to 'dd-trace-supported-framework.yaml'.")
+          }
+          for (String className : verifyMissing) {
+            if (!keyMissing.get().contains(className)) {
+              errors << "not a 'keyMissing' identifier: $className"
             }
           }
+          errors.each {
+            logger.error "Error for $group:$module - $it"
+          }
+          if (!errors.isEmpty()) {
+            throw new GradleException("Version scan verification failed.\n" +
+              "Errors listed above are likely the result of a new module " +
+              "being published to Maven, not a code change in this repo.\n" +
+              "This does mean a fix should be made though to 'dd-trace-supported-framework.yaml'.")
+          }
         }
 
         if (project.gradle.startParameter.taskNames.contains('scanVersions')) {
diff --git a/dd-java-agent/dd-java-agent.gradle b/dd-java-agent/dd-java-agent.gradle
index bedf7efc06..fc2090b8da 100644
--- a/dd-java-agent/dd-java-agent.gradle
+++ b/dd-java-agent/dd-java-agent.gradle
@@ -78,6 +78,7 @@ jar {
 
   manifest {
     attributes(
+      "Main-Class": "com.datadoghq.trace.agent.DDJavaAgentInfo",
       // I don't think we want to define this since we can't really load after startup:
       //"Agent-Class": "com.datadoghq.trace.agent.AnnotationsTracingAgent",
       "Premain-Class": "com.datadoghq.trace.agent.AnnotationsTracingAgent",
diff --git a/dd-java-agent/src/main/java/com/datadoghq/trace/agent/DDJavaAgentInfo.java b/dd-java-agent/src/main/java/com/datadoghq/trace/agent/DDJavaAgentInfo.java
index 4f793a2845..0653d1a817 100644
--- a/dd-java-agent/src/main/java/com/datadoghq/trace/agent/DDJavaAgentInfo.java
+++ b/dd-java-agent/src/main/java/com/datadoghq/trace/agent/DDJavaAgentInfo.java
@@ -16,14 +16,19 @@ public class DDJavaAgentInfo {
       final BufferedReader br =
           new BufferedReader(
               new InputStreamReader(
-                  DDJavaAgentInfo.class.getResourceAsStream("dd-java-agent.version"), "UTF-8"));
+                  DDJavaAgentInfo.class.getResourceAsStream("/dd-java-agent.version"), "UTF-8"));
       for (int c = br.read(); c != -1; c = br.read()) sb.append((char) c);
 
       v = sb.toString().trim();
     } catch (final Exception e) {
+      e.printStackTrace();
       v = "unknown";
     }
     VERSION = v;
     log.info("dd-java-agent - version: {}", v);
   }
+
+  public static void main(String... args) {
+    System.out.println(VERSION);
+  }
 }
diff --git a/dd-trace-annotations/src/main/java/com/datadoghq/trace/DDTraceAnnotationsInfo.java b/dd-trace-annotations/src/main/java/com/datadoghq/trace/DDTraceAnnotationsInfo.java
index c5bfda5b33..4ed3c82c6b 100644
--- a/dd-trace-annotations/src/main/java/com/datadoghq/trace/DDTraceAnnotationsInfo.java
+++ b/dd-trace-annotations/src/main/java/com/datadoghq/trace/DDTraceAnnotationsInfo.java
@@ -16,7 +16,7 @@ public class DDTraceAnnotationsInfo {
       final BufferedReader br =
           new BufferedReader(
               new InputStreamReader(
-                  DDTraceAnnotationsInfo.class.getResourceAsStream("dd-trace-annotations.version"),
+                  DDTraceAnnotationsInfo.class.getResourceAsStream("/dd-trace-annotations.version"),
                   "UTF-8"));
       for (int c = br.read(); c != -1; c = br.read()) sb.append((char) c);
 
@@ -27,4 +27,8 @@ public class DDTraceAnnotationsInfo {
     VERSION = v;
     log.info("dd-trace-annotations - version: {}", v);
   }
+
+  public static void main(String... args) {
+    System.out.println(VERSION);
+  }
 }
diff --git a/dd-trace-examples/rest-spark/rest-spark.gradle b/dd-trace-examples/rest-spark/rest-spark.gradle
index a24ebe4922..3efd54fc2b 100644
--- a/dd-trace-examples/rest-spark/rest-spark.gradle
+++ b/dd-trace-examples/rest-spark/rest-spark.gradle
@@ -1,3 +1,7 @@
+plugins {
+  id "com.github.johnrengelman.shadow" version "2.0.1"
+}
+
 apply plugin: 'application'
 apply from: "${rootDir}/gradle/java.gradle"
 apply from: "${rootDir}/gradle/jacoco.gradle"
@@ -23,6 +27,16 @@ dependencies {
   compile group: 'org.slf4j', name: 'slf4j-api', version: '1.7.25'
 }
 
+jar {
+  manifest {
+    attributes 'Main-Class': 'com.datadoghq.example.restspark.SparkApplication'
+  }
+}
+
+shadowJar {
+  mergeServiceFiles()
+}
+
 task wrapper(type: Wrapper) {
   gradleVersion = '4.0'
 }
diff --git a/dd-trace-java.gradle b/dd-trace-java.gradle
index b2d234192f..e36bb49f9f 100644
--- a/dd-trace-java.gradle
+++ b/dd-trace-java.gradle
@@ -30,25 +30,20 @@ apply from: "${rootDir}/gradle/publish.gradle"
 // Source: https://github.com/ratpack/ratpack/blob/master/ratpack.gradle#L101
 task bintrayPublish() {
   doLast {
-    if (!project.hasProperty("bintrayApiKey")) {
-      throw new InvalidUserDataException("You must provide bintrayApiKey")
+    if (!project.hasProperty("bintrayApiKey") || bintrayApiKey.length() < 20) {
+      throw new InvalidUserDataException("You must provide a valid bintrayApiKey")
     }
 
-    if (!project.hasProperty('buildNumber')) {
-      throw new GradleException("Must provide buildNumber of a release from https://oss.jfrog.org/artifactory/webapp/#/builds/dd-trace-java")
+    if (!project.hasProperty('buildNumber') || !"$buildNumber".isInteger()) {
+      throw new TaskExecutionException("Must provide buildNumber of a release from https://oss.jfrog.org/artifactory/webapp/#/builds/dd-trace-java")
     }
 
-    def curl = ['curl',
-                '-X', 'POST',
-                "-u", "${bintrayUser}:${bintrayApiKey}",
-                "-H", "Content-Type: application/json",
-                "-d", """{
-    "dryRun": "true",
-    "targetRepo": "datadog-maven",
-    "sourceRepos": ["oss-release-local"]
-}
-""",
-                "https://oss.jfrog.org/api/build/distribute/dd-trace-java/$project.buildNumber"
+    def curl = [
+      'curl',
+      '-X', 'POST',
+      '-u', "${bintrayUser}:${bintrayApiKey}",
+      '-d', '',
+      "http://oss.jfrog.org/api/plugins/build/promote/snapshotsToBintray/dd-trace-java/$project.buildNumber"
     ].execute()
     logger.info("Received response: ${curl.text}")
   }
diff --git a/dd-trace/src/main/java/com/datadoghq/trace/DDTraceInfo.java b/dd-trace/src/main/java/com/datadoghq/trace/DDTraceInfo.java
index dd49eba4ad..5d76b62c14 100644
--- a/dd-trace/src/main/java/com/datadoghq/trace/DDTraceInfo.java
+++ b/dd-trace/src/main/java/com/datadoghq/trace/DDTraceInfo.java
@@ -20,7 +20,7 @@ public class DDTraceInfo {
       final BufferedReader br =
           new BufferedReader(
               new InputStreamReader(
-                  DDTraceInfo.class.getResourceAsStream("dd-trace.version"), "UTF-8"));
+                  DDTraceInfo.class.getResourceAsStream("/dd-trace.version"), "UTF-8"));
       for (int c = br.read(); c != -1; c = br.read()) sb.append((char) c);
 
       v = sb.toString().trim();
@@ -30,4 +30,8 @@ public class DDTraceInfo {
     VERSION = v;
     log.info("dd-trace - version: {}", v);
   }
+
+  public static void main(String... args) {
+    System.out.println(VERSION);
+  }
 }
diff --git a/dd-trace/src/test/groovy/com/datadoghq/trace/writer/DDApiTest.groovy b/dd-trace/src/test/groovy/com/datadoghq/trace/writer/DDApiTest.groovy
index 7c0aed1983..4afaff9fcb 100644
--- a/dd-trace/src/test/groovy/com/datadoghq/trace/writer/DDApiTest.groovy
+++ b/dd-trace/src/test/groovy/com/datadoghq/trace/writer/DDApiTest.groovy
@@ -76,7 +76,7 @@ class DDApiTest extends Specification {
     requestContentType.get().type == "application/msgpack"
     requestHeaders.get().get("Datadog-Meta-Lang") == "java"
     requestHeaders.get().get("Datadog-Meta-Lang-Version") == System.getProperty("java.version", "unknown")
-    requestHeaders.get().get("Datadog-Meta-Tracer-Version") == "unknown"
+    requestHeaders.get().get("Datadog-Meta-Tracer-Version") == "Stubbed-Test-Version"
     convertList(requestBody.get()) == expectedRequestBody
 
     cleanup:
@@ -175,7 +175,7 @@ class DDApiTest extends Specification {
     requestContentType.get().type == "application/msgpack"
     requestHeaders.get().get("Datadog-Meta-Lang") == "java"
     requestHeaders.get().get("Datadog-Meta-Lang-Version") == System.getProperty("java.version", "unknown")
-    requestHeaders.get().get("Datadog-Meta-Tracer-Version") == "unknown"
+    requestHeaders.get().get("Datadog-Meta-Tracer-Version") == "Stubbed-Test-Version"
     convertMap(requestBody.get()) == expectedRequestBody
 
     cleanup:
diff --git a/dd-trace/src/test/resources/dd-trace.version b/dd-trace/src/test/resources/dd-trace.version
new file mode 100644
index 0000000000..ddab61a054
--- /dev/null
+++ b/dd-trace/src/test/resources/dd-trace.version
@@ -0,0 +1 @@
+Stubbed-Test-Version