diff --git a/aconfig/all_aconfig_declarations.go b/aconfig/all_aconfig_declarations.go
index 6ad54da..3262493 100644
--- a/aconfig/all_aconfig_declarations.go
+++ b/aconfig/all_aconfig_declarations.go
@@ -65,15 +65,16 @@
 		})
 
 		var numOffendingPkg = 0
+		offendingPkgsMessage := ""
 		for pkg, cnt := range packages {
 			if cnt > 1 {
-				fmt.Printf("%d aconfig_declarations found for package %s\n", cnt, pkg)
+				offendingPkgsMessage += fmt.Sprintf("%d aconfig_declarations found for package %s\n", cnt, pkg)
 				numOffendingPkg++
 			}
 		}
 
 		if numOffendingPkg > 0 {
-			panic(fmt.Errorf("Only one aconfig_declarations allowed for each package."))
+			panic("Only one aconfig_declarations allowed for each package.\n" + offendingPkgsMessage)
 		}
 
 		// Generate build action for aconfig (binary proto output)
diff --git a/ui/metrics/proc/status_linux_test.go b/ui/metrics/proc/status_linux_test.go
index 6709850..0edc400 100644
--- a/ui/metrics/proc/status_linux_test.go
+++ b/ui/metrics/proc/status_linux_test.go
@@ -1,7 +1,6 @@
 package proc
 
 import (
-	"fmt"
 	"path/filepath"
 	"reflect"
 	"strconv"
@@ -29,7 +28,6 @@
 		t.Fatalf("got %v, want nil for error", err)
 	}
 
-	fmt.Printf("%d %d\b", status.VmPeak, expectedStatus.VmPeak)
 	if !reflect.DeepEqual(status, expectedStatus) {
 		t.Errorf("got %v, expecting %v for ProcStatus", status, expectedStatus)
 	}