validate failure: dph-diophantine-fast

[Simon Marlow]

I get the following failure in a validate on x86-64/Linux today.  Any 
ideas, DPH folks?

=====> dph-diophantine-fast(normal) 1102 of 2731 [0, 0, 0]
=====> cd ./dph/diophantine && 
'/64playpen/simonmar/validate/bindisttest/install
  dir/bin/ghc' -fforce-recomp -dcore-lint -dcmm-lint -dno-debug-output 
-no-user-p
ackage-conf -rtsopts  --make -o dph-diophantine-fast Main  -O 
-fno-enable-rewrit
e-rules -fdph-par  >dph-diophantine-fast.comp.stderr 
2>&1dph-sumnats(normal) 110
3 of 2731 [0, 0, 0]

cd ./dph/sumnats && '/64playpen/simonmar/validate/bindisttest/install 
dir/bin/gh
c' -fforce-recomp -dcore-lint -dcmm-lint -dno-debug-output 
-no-user-package-conf
  -rtsopts  --make -o dph-sumnats Main  -Odph -fdph-par 
 >dph-sumnats.comp.stderr
  2>&1
Compile failed (status 256) errors were:
[1 of 2] Compiling DiophantineVect  ( DiophantineVect.hs, 
DiophantineVect.o )
[2 of 2] Compiling Main             ( Main.hs, Main.o )

Main.hs:40:9:
     No instance for (Show [:Int:])
       arising from a use of `print'
     Possible fix: add an instance declaration for (Show [:Int:])
     In the expression: print solution3
     In the expression:
       do { print solution1;
            print solution2;
            print solution3 }
     In an equation for `main':
         main
           = do { print solution1;
                  print solution2;
                  print solution3 }

*** unexpected failure for dph-diophantine-fast(normal)
cd ./dph/sumnats && ./dph-sumnats    </dev/null >dph-sumnats.run.stdout 
2>dph-sumnats.run.stderr