Classes not found whilst trying to build community source

These errors appeared whilst trying to build CE  source. Any pointers would be greatly appreciated. 

With JDKs defined as :

1.8 == jar:///usr/lib/jvm/adoptopenjdk-8-hotspot-amd64/jre/lib/charsets.jar!/
jar:///usr/lib/jvm/adoptopenjdk-8-hotspot-amd64/jre/lib/ext/cldrdata.jar!/
jar:///usr/lib/jvm/adoptopenjdk-8-hotspot-amd64/jre/lib/ext/dnsns.jar!/
jar:///usr/lib/jvm/adoptopenjdk-8-hotspot-amd64/jre/lib/ext/jaccess.jar!/
jar:///usr/lib/jvm/adoptopenjdk-8-hotspot-amd64/jre/lib/ext/localedata.jar!/
jar:///usr/lib/jvm/adoptopenjdk-8-hotspot-amd64/jre/lib/ext/nashorn.jar!/
jar:///usr/lib/jvm/adoptopenjdk-8-hotspot-amd64/jre/lib/ext/sunec.jar!/
jar:///usr/lib/jvm/adoptopenjdk-8-hotspot-amd64/jre/lib/ext/sunjce_provider.jar!/
jar:///usr/lib/jvm/adoptopenjdk-8-hotspot-amd64/jre/lib/ext/sunpkcs11.jar!/
jar:///usr/lib/jvm/adoptopenjdk-8-hotspot-amd64/jre/lib/ext/zipfs.jar!/
jar:///usr/lib/jvm/adoptopenjdk-8-hotspot-amd64/jre/lib/jce.jar!/
jar:///usr/lib/jvm/adoptopenjdk-8-hotspot-amd64/jre/lib/jsse.jar!/
jar:///usr/lib/jvm/adoptopenjdk-8-hotspot-amd64/jre/lib/management-agent.jar!/
jar:///usr/lib/jvm/adoptopenjdk-8-hotspot-amd64/jre/lib/resources.jar!/
jar:///usr/lib/jvm/adoptopenjdk-8-hotspot-amd64/jre/lib/rt.jar!/

IDEAjdk == 1.8

Error messages:

Error:(5, 1) java: package com.sun.source.tree does not exist
Error:(6, 27) java: package com.sun.source.util does not exist
Error:(20, 35) java: cannot find symbol
symbol: class TreeScanner
Error:(20, 47) java: cannot find symbol
symbol: class Tree
Error:(31, 36) java: cannot find symbol
symbol: class CompilationUnitTree
location: class org.jetbrains.jps.javac.ast.JavacTreeRefScanner
Error:(31, 10) java: cannot find symbol
symbol: class Tree
location: class org.jetbrains.jps.javac.ast.JavacTreeRefScanner
Error:(38, 31) java: cannot find symbol
symbol: class IdentifierTree
location: class org.jetbrains.jps.javac.ast.JavacTreeRefScanner
Error:(38, 10) java: cannot find symbol
symbol: class Tree
location: class org.jetbrains.jps.javac.ast.JavacTreeRefScanner
Error:(50, 29) java: cannot find symbol
symbol: class NewClassTree
location: class org.jetbrains.jps.javac.ast.JavacTreeRefScanner
Error:(50, 10) java: cannot find symbol
symbol: class Tree
location: class org.jetbrains.jps.javac.ast.JavacTreeRefScanner
Error:(74, 29) java: cannot find symbol
symbol: class VariableTree
location: class org.jetbrains.jps.javac.ast.JavacTreeRefScanner
Error:(74, 10) java: cannot find symbol
symbol: class Tree
location: class org.jetbrains.jps.javac.ast.JavacTreeRefScanner
Error:(86, 33) java: cannot find symbol
symbol: class MemberSelectTree
location: class org.jetbrains.jps.javac.ast.JavacTreeRefScanner
Error:(86, 10) java: cannot find symbol
symbol: class Tree
location: class org.jetbrains.jps.javac.ast.JavacTreeRefScanner
Error:(101, 27) java: cannot find symbol
symbol: class MethodTree
location: class org.jetbrains.jps.javac.ast.JavacTreeRefScanner
Error:(101, 10) java: cannot find symbol
symbol: class Tree
location: class org.jetbrains.jps.javac.ast.JavacTreeRefScanner
Error:(119, 27) java: cannot find symbol
symbol: class BinaryTree
location: class org.jetbrains.jps.javac.ast.JavacTreeRefScanner
Error:(119, 10) java: cannot find symbol
symbol: class Tree
location: class org.jetbrains.jps.javac.ast.JavacTreeRefScanner
Error:(161, 37) java: cannot find symbol
symbol: class MethodInvocationTree
location: class org.jetbrains.jps.javac.ast.JavacTreeRefScanner
Error:(161, 10) java: cannot find symbol
symbol: class Tree
location: class org.jetbrains.jps.javac.ast.JavacTreeRefScanner
Error:(185, 23) java: cannot find symbol
symbol: class NewClassTree
location: class org.jetbrains.jps.javac.ast.JavacTreeRefScanner
Error:(188, 26) java: cannot find symbol
symbol: class ClassTree
location: class org.jetbrains.jps.javac.ast.JavacTreeRefScanner
Error:(188, 10) java: cannot find symbol
symbol: class Tree
location: class org.jetbrains.jps.javac.ast.JavacTreeRefScanner
Error:(232, 29) java: cannot find symbol
symbol: class TypeCastTree
location: class org.jetbrains.jps.javac.ast.JavacTreeRefScanner
Error:(232, 10) java: cannot find symbol
symbol: class Tree
location: class org.jetbrains.jps.javac.ast.JavacTreeRefScanner
Error:(361, 64) java: cannot find symbol
symbol: class Tree
location: class org.jetbrains.jps.javac.ast.JavacTreeRefScanner
Error:(362, 64) java: cannot find symbol
symbol: class Tree
location: class org.jetbrains.jps.javac.ast.JavacTreeRefScanner
Error:(30, 3) java: method does not override or implement a method from a supertype
Error:(37, 3) java: method does not override or implement a method from a supertype
Error:(49, 3) java: method does not override or implement a method from a supertype
Error:(56, 14) java: cannot find symbol
symbol: variable super
location: class org.jetbrains.jps.javac.ast.JavacTreeRefScanner
Error:(73, 3) java: method does not override or implement a method from a supertype
Error:(82, 12) java: cannot find symbol
symbol: variable super
location: class org.jetbrains.jps.javac.ast.JavacTreeRefScanner
Error:(85, 3) java: method does not override or implement a method from a supertype
Error:(89, 7) java: cannot find symbol
symbol: class ExpressionTree
location: class org.jetbrains.jps.javac.ast.JavacTreeRefScanner
Error:(97, 12) java: cannot find symbol
symbol: variable super
location: class org.jetbrains.jps.javac.ast.JavacTreeRefScanner
Error:(100, 3) java: method does not override or implement a method from a supertype
Error:(115, 12) java: cannot find symbol
symbol: variable super
location: class org.jetbrains.jps.javac.ast.JavacTreeRefScanner
Error:(118, 3) java: method does not override or implement a method from a supertype
Error:(120, 9) java: package Tree does not exist
Error:(121, 21) java: package Tree does not exist
Error:(122, 7) java: cannot find symbol
symbol: class ExpressionTree
location: class org.jetbrains.jps.javac.ast.JavacTreeRefScanner
Error:(123, 7) java: cannot find symbol
symbol: class ExpressionTree
location: class org.jetbrains.jps.javac.ast.JavacTreeRefScanner
Error:(134, 12) java: cannot find symbol
symbol: variable super
location: class org.jetbrains.jps.javac.ast.JavacTreeRefScanner
Error:(160, 3) java: method does not override or implement a method from a supertype
Error:(162, 43) java: cannot find symbol
symbol: class IdentifierTree
location: class org.jetbrains.jps.javac.ast.JavacTreeRefScanner
Error:(180, 12) java: cannot find symbol
symbol: variable super
location: class org.jetbrains.jps.javac.ast.JavacTreeRefScanner
Error:(185, 72) java: cannot find symbol
symbol: class NewClassTree
location: class org.jetbrains.jps.javac.ast.JavacTreeRefScanner
Error:(187, 3) java: method does not override or implement a method from a supertype
Error:(192, 5) java: cannot find symbol
symbol: class ModifiersTree
location: class org.jetbrains.jps.javac.ast.JavacTreeRefScanner
Error:(223, 7) java: cannot find symbol
symbol: variable super
location: class org.jetbrains.jps.javac.ast.JavacTreeRefScanner
Error:(231, 3) java: method does not override or implement a method from a supertype
Error:(233, 5) java: cannot find symbol
symbol: variable super
location: class org.jetbrains.jps.javac.ast.JavacTreeRefScanner