Tests fail when run with SBT on the command line but not when run in the IDE - unit-testing

Question

When I run the unit tests of my Flink application through the IntelliJ IDE they pass without any issue. When I run them through SBT though, a few exceptions are thrown (see below). What may the cause for these exceptions be? I've been unable to track them down.
Edit: It's worth noting that the project in IntelliJ was created as a "sbt project", so the way the IDE knows about the project dependencies is also through the build.sbt file. Why is this file not being enough when running sbt form the command line?
$ sbt clean test
[info] Loading global plugins from /Users/myuser/.sbt/0.13/plugins
[info] Loading project definition from /Users/myuser/projects/anonymizer/project
[info] Set current project to anonymizer (in build file:/Users/myuser/projects/anonymizer/)
[success] Total time: 8 s, completed Jan 20, 2016 6:15:20 PM
[info] Updating {file:/Users/myuser/projects/anonymizer/}anonymizer...
[info] Resolving jline#jline;2.12.1 ...
[info] Done updating.
[info] Compiling 8 Scala sources to /Users/myuser/projects/anonymizer/target/scala-2.11/classes...
[info] Compiling 2 Scala sources to /Users/myuser/projects/anonymizer/target/scala-2.11/test-classes...
[error] Test myorg.mypackage.TestMyClass failed: java.nio.file.FileAlreadyExistsException: /var/folders/n4/_bl8xyqs15xbgy37k889plm80000gn/T/TestBaseUtils-logdir9030651763276830933.tmp/jobmanager.out, took 0.0 sec
[error] at sun.nio.fs.UnixException.translateToIOException(UnixException.java:88)
[error] at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:102)
[error] at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:107)
[error] at sun.nio.fs.UnixFileSystemProvider.newByteChannel(UnixFileSystemProvider.java:214)
[error] at java.nio.file.Files.newByteChannel(Files.java:361)
[error] at java.nio.file.Files.createFile(Files.java:632)
[error] at org.apache.flink.test.util.TestBaseUtils.startCluster(TestBaseUtils.java:136)
[error] at org.apache.flink.test.util.TestBaseUtils.startCluster(TestBaseUtils.java:124)
[error] at org.apache.flink.streaming.util.StreamingMultipleProgramsTestBase.setup(StreamingMultipleProgramsTestBase.java:72)
[error] ...
2016-01-20 18:15:38 INFO FlinkMiniCluster:230 - Starting FlinkMiniCluster.
2016-01-20 18:15:38 INFO Slf4jLogger:80 - Slf4jLogger started
2016-01-20 18:15:38 INFO BlobServer:94 - Created BLOB server storage directory /var/folders/n4/_bl8xyqs15xbgy37k889plm80000gn/T/blobStore-07aa1e12-785d-4a18-bb16-6c2664f6b4f2
[...]
2016-01-20 18:15:39 INFO Task:470 - Loading JAR files for task Source: Collection Source -> Flat Map -> Sink: Unnamed (1/1)
2016-01-20 18:15:39 INFO Task:858 - Source: Collection Source -> Flat Map -> Sink: Unnamed (1/1) switched to FAILED with exception.
java.lang.Exception: Could not load the task's invokable class.
at org.apache.flink.runtime.taskmanager.Task.loadAndInstantiateInvokable(Task.java:729)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:474)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassNotFoundException: org.apache.flink.streaming.runtime.tasks.SourceStreamTask
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:348)
at org.apache.flink.runtime.taskmanager.Task.loadAndInstantiateInvokable(Task.java:725)
... 2 more
2016-01-20 18:15:39 INFO Task:672 - Freeing task resources for Source: Collection Source -> Flat Map -> Sink: Unnamed (1/1)
2016-01-20 18:15:39 INFO TestingTaskManager:128 - Unregistering task and sending final execution state FAILED to JobManager for task Source: Collection Source -> Flat Map -> Sink: Unnamed (717fa0d09f9592d62db7b9e52f08de6e)
2016-01-20 18:15:39 INFO ExecutionGraph:934 - Source: Collection Source -> Flat Map -> Sink: Unnamed (1/1) (717fa0d09f9592d62db7b9e52f08de6e) switched from DEPLOYING to FAILED
2016-01-20 18:15:39 INFO TestingJobManager:137 - Status of job f8d59cfb76aaaeb016a14120125338fd (Flink Streaming Job) changed to FAILING.
java.lang.Exception: Could not load the task's invokable class.
at org.apache.flink.runtime.taskmanager.Task.loadAndInstantiateInvokable(Task.java:729)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:474)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassNotFoundException: org.apache.flink.streaming.runtime.tasks.SourceStreamTask
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:348)
at org.apache.flink.runtime.taskmanager.Task.loadAndInstantiateInvokable(Task.java:725)
... 2 more
2016-01-20 18:15:39 INFO JobClientActor:280 - 01/20/2016 18:15:39 Source: Collection Source -> Flat Map -> Sink: Unnamed(1/1) switched to FAILED
java.lang.Exception: Could not load the task's invokable class.
at org.apache.flink.runtime.taskmanager.Task.loadAndInstantiateInvokable(Task.java:729)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:474)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassNotFoundException: org.apache.flink.streaming.runtime.tasks.SourceStreamTask
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:348)
at org.apache.flink.runtime.taskmanager.Task.loadAndInstantiateInvokable(Task.java:725)
... 2 more
2016-01-20 18:15:39 INFO JobClientActor:280 - 01/20/2016 18:15:39 Job execution switched to status FAILING.
[...]
This is my build.sbt file:
name := "anonymizer"
version := "1.0"
scalaVersion := "2.11.7"
libraryDependencies ++= Seq(
"org.apache.flink" % "flink-streaming-scala_2.11" % "0.10.1",
"org.apache.flink" % "flink-clients_2.11" % "0.10.1",
"org.apache.flink" % "flink-connector-kafka_2.11" % "0.10.1",
"com.fasterxml.jackson.module" % "jackson-module-scala_2.11" % "2.6.3"
)
// Dependencies needed by the unit tests when using junit
libraryDependencies ++= Seq(
"com.novocode" % "junit-interface" % "0.11" % "test",
"org.apache.flink" % "flink-streaming-contrib_2.11" % "0.10.1",
"org.apache.flink" % "flink-streaming-java_2.11" % "0.10.1" % "test" classifier "tests",
"org.apache.flink" % "flink-core_2.11" % "0.10.1" % "test" classifier "tests",
"org.apache.flink" % "flink-runtime_2.11" % "0.10.1" % "test" classifier "tests",
"org.apache.flink" % "flink-test-utils_2.11" % "0.10.1" % "test"
)