Fixed log in pkg setup

pkgs_envsetup.py

 #!/usr/bin/env python3
 
-from subprocess import run, DEVNULL, PIPE
+from subprocess import run, DEVNULL, PIPE, STDOUT
 
 PACKAGES = [
     "bsd-mailx",  # for "mail" command used in tester
@@ -24,14 +24,15 @@ def main():
             result = run(
                 ["/usr/bin/apt", "install", "-y", pkg],
                 shell=False,
-                stdout=DEVNULL,
-                stderr=DEVNULL,
+                stdout=PIPE,
+                stderr=STDOUT,
                 stdin=PIPE,
             )
-            if not result:
+            if result.returncode == 0:
                 print("{} install succeeded".format(pkg))
             else:
                 print("{} install failed".format(pkg))
+                print(result.stdout.decode("utf-8"))
         else:
             print("{} already installed".format(pkg))