diff --git a/test/orfs/mock-array/load_power.tcl b/test/orfs/mock-array/load_power.tcl
index ee91d75e2d..2b9d27fad1 100644
--- a/test/orfs/mock-array/load_power.tcl
+++ b/test/orfs/mock-array/load_power.tcl
@@ -6,6 +6,33 @@ foreach libFile $::env(LIB_FILES) {
   }
 }
 
+proc check_log_for_warning { logfile } {
+  set f [open $logfile r]
+  set log_contents [read $f]
+  close $f
+  puts $log_contents
+  # Check each line in the file for warnings other than:
+  # Warning: pin io_lsbOuts_0 not found
+  #
+  # Also list unexpected warnings here as they are found.
+  set unexpected_warnings {}
+  foreach line [split $log_contents "\n"] {
+    if { [string match "*Warning:*" $line] } {
+      if { ![string match "*pin * not found*" $line] } {
+        lappend unexpected_warnings $line
+      }
+    }
+  }
+  if { [llength $unexpected_warnings] > 0 } {
+    puts "Error: Unexpected warnings found in log file $logfile:"
+    foreach warning $unexpected_warnings {
+      puts $warning
+    }
+    exit 1
+  }
+}
+
+
 # $::env(VARIANT) contains 4x4_foo, fish out what comes before _
 set name [lindex [split $::env(FLOW_VARIANT) "_"] 0]
 
@@ -15,12 +42,15 @@ log_cmd read_verilog $::env(PLATFORM_DIR)/verilog/stdcell/empty.v
 log_cmd link_design MockArray
 
 log_cmd read_sdc $::env(RESULTS_DIR)/$::env(POWER_STAGE_STEM).sdc
-log_cmd read_spef $::env(RESULTS_DIR)/$::env(POWER_STAGE_STEM).spef
+log_cmd read_spef $::env(RESULTS_DIR)/$::env(POWER_STAGE_STEM).spef > log.txt
+check_log_for_warning log.txt
+
 puts "read_spef for ces_*_* macros"
 for { set x 0 } { $x < $::env(ARRAY_COLS) } { incr x } {
   for { set y 0 } { $y < $::env(ARRAY_ROWS) } { incr y } {
     log_cmd read_spef -path ces_${x}_${y} \
-      $::env(RESULTS_DIR)/../../Element/${name}_base/$::env(POWER_STAGE_STEM).spef
+      $::env(RESULTS_DIR)/../../Element/${name}_base/$::env(POWER_STAGE_STEM).spef > log.txt
+    check_log_for_warning log.txt
   }
 }