ADMM fails to converge with streaming + nonneg constraints

[sjnnjs]

When running splatt in streaming mode with non-negativity constraint and a forget factor=0.95, the ADMM solver fails to converge.

./build/Linux-x86_64/bin/splatt \
  cpd \
  --stream=1 \
  --con=nonneg \
  --reg=frob,1e-5,1 \
  --forget=0.95 \
  -r 16 \
  -i 1 \
  --tol=1e-5 \
  -t 1 \
  --seed=20 \
  /workspace/data/uber.tns