check for exit statuses greater than 100

Since rust-lang/rust#52197, ICEs will fail with exit status 101.
Compilation successes and failures will return 0 and 1, respectively.

Fixes rust-lang#143.

test.sh

@@ -1,17 +1,25 @@
 #!/bin/bash
 
+RUSTC=rustc
+
 for f in src/*
 do
   [[ -f $f ]] || continue;
   echo "Testing $f:"
-  # Compile the code, and if it passes exit with error code
-  if rustc "$f" > /dev/null 2>&1; then
+  # Compile the code, and if it exits with a code less than 101, exit with error
+  # code.
+  #
+  # An ICE will cause error code 101. An abort or other signal will cause an
+  # error code greater than 101.
+  output=$($RUSTC --color=always "$f" 2>&1)
+  if (( "$?" < 101 )); then
+    echo "$output"
     exit 1
   fi
 done
 
 echo "Testing 21335"
-rustc - --out-dir=random_directory_that_does_not_exist/ --emit=llvm-ir <<< 'fn main(){}'
+$RUSTC - --out-dir=random_directory_that_does_not_exist/ --emit=llvm-ir <<< 'fn main(){}'
 
 echo "Testing 16229"
 if bash 16229.sh > /dev/null 2>&1; then