FULL PRODUCT VERSION :
java version "1.8.0_25"
Java(TM) SE Runtime Environment (build 1.8.0_25-b17)
Java HotSpot(TM) 64-Bit Server VM (build 25.25-b02, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Darwin Wills-MacBook-Pro.local 13.4.0 Darwin Kernel Version 13.4.0: Sun Aug 17 19:50:11 PDT 2014; root:xnu-2422.115.4~1/RELEASE_X86_64 x86_64

A DESCRIPTION OF THE PROBLEM :
The attached code compiles fine on 8u05 but doesn't compile on 8u20 or 8u25. I'm aware that there were changes to the handling of wildcards in 8u20 (JDK-8042338 & JDK-8042803) but I don't see anything wrong with this code.

Also, both Eclipse and IntelliJ do not display any errors when viewing this code.

REGRESSION.  Last worked in version 8u5

ADDITIONAL REGRESSION INFORMATION: 
java version "1.8.0_05"
Java(TM) SE Runtime Environment (build 1.8.0_05-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.5-b02, mixed mode)

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Compile the attached code using a version of Java after update 5.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Code should compile
ACTUAL -
Code doesn't compile

ERROR MESSAGES/STACK TRACES THAT OCCUR :
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project utilities: Compilation failure
[ERROR] ... Temp.java:[8,39] incompatible types: java.util.function.Consumer<capture#1 of ?> cannot be converted to java.util.function.Consumer<? super capture#1 of ?>
[ERROR] -> [Help 1]

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.util.List;
import java.util.function.Consumer;

public class Temp {

    public void doWithList(final List<?> list) {
        list.stream().forEach(consumer(System.out::println));
    }

    @FunctionalInterface
    public static interface ExceptionThrowingConsumer<T> {
        void accept(T input) throws Exception;
    }

    public static <T> Consumer<T> consumer(ExceptionThrowingConsumer<T> consumer) {
        return i -> {
            try {
                consumer.accept(i);
            } catch (Exception e) {
                throw new RuntimeException(e);
            }
        };
    }

}
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
The only workaround is to rewrite the code