I ran into the following failures when building the melting pot with a J11 JDK:
[FAILURE] io.scif/scifio
[FAILURE] io.scif/scifio-hdf5
[FAILURE] io.scif/scifio-jai-imageio
[FAILURE] net.imagej/ij1-patcher
[FAILURE] net.imagej/imagej-tensorflow
[FAILURE] net.imglib2/imglib2-label-multisets
[FAILURE] net.imglib2/imglib2-unsafe
[FAILURE] org.scijava/native-lib-loader
[FAILURE] org.scijava/parsington
[FAILURE] org.scijava/scijava-common
[FAILURE] org.scijava/scripting-java
[FAILURE] sc.fiji/IO_
[FAILURE] sc.fiji/LSM_Toolbox
[FAILURE] sc.fiji/Vaa3d_Reader
[FAILURE] sc.fiji/bigwarp_fiji
[FAILURE] sc.fiji/fiji-lib
[FAILURE] sc.fiji/labkit-ui
I was testing J11 because ImageJ 1.x requires J9+ for module-info processing. A future enhancement for the melting pot would be to add logic that detects the declared Java version in the pom and builds with that version.