diff -r ac79c2e534bd -r b528d1d3d3c3 core_testing1/collatz_test.sh
--- a/core_testing1/collatz_test.sh	Thu Nov 02 12:37:58 2023 +0000
+++ b/core_testing1/collatz_test.sh	Thu Nov 02 13:53:37 2023 +0000
@@ -15,13 +15,13 @@
 # compilation tests
 
 function scala_compile {
-  (ulimit -t 30; JAVA_OPTS="-Xmx1g" scala-cli compile "$1" ) #2> c$out 1> c$out)
+  (ulimit -t 30; JAVA_OPTS="-Xmx1g" scala-cli compile "$1" 2> c$out 1> c$out)
 }
 
 # functional tests
 
 function scala_assert {
-  (ulimit -t 30; JAVA_OPTS="-Xmx1g" scala-cli -i "$1" "$2" -e "urbanmain()" ) #2> /dev/null 1> /dev/null)
+  (ulimit -t 30; JAVA_OPTS="-Xmx1g" scala-cli -i "$1" "$2" -e "urbanmain()" 2> /dev/null 1> /dev/null)
 }
 
 # purity test
@@ -42,6 +42,7 @@
     tsts=$(( 0 ))
 else
     echo -e "  --> SCALA DID NOT RUN collatz.scala\n" >> $out
+    echo -e "  --> try running scala-cli compile collatz.scala on your own computer\n" >> $out
     tsts=$(( 1 )) 
 fi