run.pl: Better error messages

continuous/gw-setup/run.pl

@@ -11,12 +11,12 @@ system("cat > $S99; chmod +x $S99") unless -t STDIN;
 # Boot the gateway
 # die("No boot command") if ($#ARGV eq -1);
 my $bootcmd = scalar @ARGV ? "'".join("' '", @ARGV)."'" : "$FindBin::Bin/boot";
-$exp = Expect->spawn($bootcmd);
+$exp = Expect->spawn($bootcmd) or die "Cannot spawn $bootcmd: $!";
 $exp->expect(120,
 	     'Welcome to Buildroot',
 	     'UGW started',
 	     '-re', 't...a...s...k...s... ...s...t...a...r...t...e...d') # RTEMS has bug - it sends 4 characters instead of just one
-    or die "Cannot spawn $bootcmd: $!";
+    or die("Boot failed");
 
 # Measure latencies
 my $latester=<<'EOF';