Gradle cannot find Scala tests when upgraded to 4.2 - scala

Question

I have a project relying on Scala and Gradle as a build tool that was on hold for a while. I got back to it, and first upgrade Gradle to 4.2 ( the previous version was 3.2).
After this upgrade, I cannot build my project anymore and it always fails on tests. For example, this is the output I get:
kbreconstruction.TestBiasComponents > initializationError FAILED
java.lang.NoSuchMethodError at TestBiasComponents.scala:23
where the line 23 is simply a
describe("...")
statement of scalatest.
The only thing that has changed from a few months ago is that I removed some of the maven repositories that are not working anymore (and weren't used actually before).
The actual error that I get is this
java.lang.NoSuchMethodError: scala.runtime.ObjectRef.create(Ljava/lang/Object;)Lscala/runtime/ObjectRef;
This looks like there is a Scala version mismatch, but I'm then wondering how is it possible it worked before?
Did anyone have a similar issue before?
My build.gradle looks like this
version '1.2'
apply plugin: 'java'
apply plugin: 'scala'
apply plugin: 'idea'
apply plugin: 'maven'
apply plugin:'application'
mainClassName = 'CommandLine'
ext {
scalaVersion = '2.11.11'
scalaLibVersion = '2.11.11'
}
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.github.jengelman.gradle.plugins:shadow:1.2.4'
}
}
apply plugin: 'com.github.johnrengelman.shadow'
repositories {
mavenCentral()
maven {
url "http://artifactory.info.ucl.ac.be/artifactory/libs-release"
}
flatDir {
dirs 'libs'
}
}
dependencies {
compile 'org.scala-lang:scala-library:2.11.8'
//parsing
compile 'com.github.scopt:scopt_2.11:3.5.0'
//tweety and it's missing dependencies
compile'net.sf.tweety:tweety-full:1.8'
compile 'org.ojalgo:ojalgo:35.0.1'
// logging
compile 'ch.qos.logback:logback-classic:1.1.7'
compile 'ch.qos.logback:logback-core:1.1.7'
compile'org.slf4j:slf4j-api:1.7.21'
//compile 'org.slf4j:slf4j-simple:1.7.21'
//compile 'org.clapper:grizzled-scala_2.11:3.0.0'
compile 'org.clapper:grizzled-slf4j_2.11:1.2.0'
// JaCoP library
compile 'org.jacop:jacop:4.4.0'
//OscaR
compile 'oscar:oscar-cp_2.11:3.1.0'
//missing libraries directory
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile group: 'junit', name: 'junit', version: '4.+'
testCompile "org.scalatest:scalatest_2.11:3.0.0"
}
compileScala {
scalaCompileOptions.additionalParameters = [ '-feature' ]
}
idea {
module {
excludeDirs += file('.idea')
inheritOutputDirs = true
downloadJavadoc = true
downloadSources = true
}
}
task scalatest(dependsOn: ['testClasses'], type: JavaExec) {
main = 'org.scalatest.tools.Runner'
args = ['-R', 'build/classes/test', '-o']
classpath = sourceSets.test.runtimeClasspath
}
task wrapper(type: Wrapper) {
gradleVersion = '4.2' //version required
}
jar {
manifest {
attributes 'Main-Class': mainClassName
}
}
It's the same with IntelliJ - it cannot execute tests anymore.
Looking into output of gradle dependencies pointed me out to this
+--- net.sf.tweety:action:1.9
| | +--- net.sf.tweety:commons:1.9
| | | +--- ch.qos.logback:logback-core:0.9.30 -> 1.1.7
| | | +--- ch.qos.logback:logback-classic:0.9.30 -> 1.1.7
| | | | +--- ch.qos.logback:logback-core:1.1.7
| | | | \--- org.slf4j:slf4j-api:1.7.20 -> 1.7.21
| | | \--- org.slf4j:log4j-over-slf4j:1.6.3
| | | \--- org.slf4j:slf4j-api:1.6.3 -> 1.7.21
| | +--- net.sf.tweety.logics:fol:1.9
| | | +--- net.sf.tweety.logics:commons:1.9
| | | | +--- net.sf.tweety:commons:1.9 (*)
| | | | \--- net.sf.tweety:math:1.9
| | | | +--- net.sf.tweety:commons:1.9 (*)
| | | | +--- org.apache.commons:commons-math:2.1
| | | | +--- org.apache.commons:commons-math3:3.2
| | | | +--- gov.nist.math:jama:1.0.3
| | | | +--- org.slf4j:log4j-over-slf4j:1.6.3 (*)
| | | | +--- org.ojalgo:ojalgo:35.0 -> 35.0.1
| | | | \--- com.dbtsai.lbfgs:lbfgs:0.1
| | | | \--- org.scala-lang:scala-library:2.10.3 -> 2.11.11
but it seems that dependency has already replaced the old scala library version.