error: illegal start of type declaration

[Raghav2211]

wrap: org.apache.commons.exec.ExecuteException: Process exited with an error: 1 (Exit value: 1) -> [Help 1]

[ERROR] 
/src/main/java/module-info.java:8: error: illegal start of type declaration
[INFO] module modulename {
[INFO]        ^
[ERROR] one error found

Java version

java version "10.0.2" 2018-07-17
Java(TM) SE Runtime Environment 18.3 (build 10.0.2+13)
Java HotSpot(TM) 64-Bit Server VM 18.3 (build 10.0.2+13, mixed mode)

Maven dependency

<dependency>
    <groupId>org.scala-lang</groupId>
    <artifactId>scala-library</artifactId>
    <version>2.12.4</version>
</dependency>

[SethTisue]

how did this error arise? how I would reproduce it on my own machine?

[som-snytt]

The canonical issue for module support is scala/scala-dev#529