diff --git a/tools/releasetools/add_img_to_target_files.py b/tools/releasetools/add_img_to_target_files.py
index d7d1bc8..2fa5f52 100755
--- a/tools/releasetools/add_img_to_target_files.py
+++ b/tools/releasetools/add_img_to_target_files.py
@@ -49,7 +49,6 @@
 import os
 import shlex
 import shutil
-import subprocess
 import sys
 import uuid
 import zipfile
@@ -259,10 +258,11 @@
     args = OPTIONS.info_dict.get("avb_dtbo_add_hash_footer_args")
     if args and args.strip():
       cmd.extend(shlex.split(args))
-    p = common.Run(cmd, stdout=subprocess.PIPE)
-    p.communicate()
-    assert p.returncode == 0, \
-        "avbtool add_hash_footer of %s failed" % (img.name,)
+    proc = common.Run(cmd)
+    output, _ = proc.communicate()
+    assert proc.returncode == 0, \
+        "Failed to call 'avbtool add_hash_footer' for {}:\n{}".format(
+            img.name, output)
 
   img.Write()
   return img.name
@@ -451,9 +451,9 @@
         assert found, 'Failed to find {}'.format(image_path)
     cmd.extend(split_args)
 
-  p = common.Run(cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
-  stdoutdata, _ = p.communicate()
-  assert p.returncode == 0, \
+  proc = common.Run(cmd)
+  stdoutdata, _ = proc.communicate()
+  assert proc.returncode == 0, \
       "avbtool make_vbmeta_image failed:\n{}".format(stdoutdata)
   img.Write()
 
@@ -481,9 +481,9 @@
   if args:
     cmd.extend(shlex.split(args))
 
-  p = common.Run(cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
-  stdoutdata, _ = p.communicate()
-  assert p.returncode == 0, \
+  proc = common.Run(cmd)
+  stdoutdata, _ = proc.communicate()
+  assert proc.returncode == 0, \
       "bpttool make_table failed:\n{}".format(stdoutdata)
 
   img.Write()
@@ -600,12 +600,10 @@
 
   temp_care_map = common.MakeTempFile(prefix="caremap-", suffix=".pb")
   care_map_gen_cmd = ["care_map_generator", temp_care_map_text, temp_care_map]
-  p = common.Run(care_map_gen_cmd, stdout=subprocess.PIPE,
-                 stderr=subprocess.STDOUT)
-  output, _ = p.communicate()
-  if OPTIONS.verbose:
-    print(output.rstrip())
-  assert p.returncode == 0, "Failed to generate the care_map proto message."
+  proc = common.Run(care_map_gen_cmd)
+  output, _ = proc.communicate()
+  assert proc.returncode == 0, \
+      "Failed to generate the care_map proto message:\n{}".format(output)
 
   care_map_path = "META/care_map.pb"
   if output_zip and care_map_path not in output_zip.namelist():
@@ -656,9 +654,9 @@
   cmd += shlex.split(OPTIONS.info_dict.get('lpmake_args').strip())
   cmd += ['--output', img.name]
 
-  p = common.Run(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
-  stdoutdata, _ = p.communicate()
-  assert p.returncode == 0, \
+  proc = common.Run(cmd)
+  stdoutdata, _ = proc.communicate()
+  assert proc.returncode == 0, \
       "lpmake tool failed:\n{}".format(stdoutdata)
 
   img.Write()
diff --git a/tools/releasetools/blockimgdiff.py b/tools/releasetools/blockimgdiff.py
index aeb4379..189dba2 100644
--- a/tools/releasetools/blockimgdiff.py
+++ b/tools/releasetools/blockimgdiff.py
@@ -23,7 +23,6 @@
 import os
 import os.path
 import re
-import subprocess
 import sys
 import threading
 from collections import deque, OrderedDict
@@ -43,11 +42,10 @@
 
   # Don't dump the bsdiff/imgdiff commands, which are not useful for the case
   # here, since they contain temp filenames only.
-  p = common.Run(cmd, verbose=False, stdout=subprocess.PIPE,
-                 stderr=subprocess.STDOUT)
-  output, _ = p.communicate()
+  proc = common.Run(cmd, verbose=False)
+  output, _ = proc.communicate()
 
-  if p.returncode != 0:
+  if proc.returncode != 0:
     raise ValueError(output)
 
   with open(patchfile, 'rb') as f:
@@ -1494,9 +1492,9 @@
                "--block-limit={}".format(max_blocks_per_transfer),
                "--split-info=" + patch_info_file,
                src_file, tgt_file, patch_file]
-        p = common.Run(cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
-        imgdiff_output, _ = p.communicate()
-        assert p.returncode == 0, \
+        proc = common.Run(cmd)
+        imgdiff_output, _ = proc.communicate()
+        assert proc.returncode == 0, \
             "Failed to create imgdiff patch between {} and {}:\n{}".format(
                 src_name, tgt_name, imgdiff_output)
 
diff --git a/tools/releasetools/check_ota_package_signature.py b/tools/releasetools/check_ota_package_signature.py
index 3cac90a..a580709 100755
--- a/tools/releasetools/check_ota_package_signature.py
+++ b/tools/releasetools/check_ota_package_signature.py
@@ -24,7 +24,6 @@
 import re
 import subprocess
 import sys
-import tempfile
 import zipfile
 
 from hashlib import sha1
@@ -165,11 +164,11 @@
   cmd = ['delta_generator',
          '--in_file=' + payload_file,
          '--public_key=' + pubkey]
-  proc = common.Run(cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+  proc = common.Run(cmd)
   stdoutdata, _ = proc.communicate()
   assert proc.returncode == 0, \
-      'Failed to verify payload with delta_generator: %s\n%s' % (package,
-                                                                 stdoutdata)
+      'Failed to verify payload with delta_generator: {}\n{}'.format(
+          package, stdoutdata)
   common.ZipClose(package_zip)
 
   # Verified successfully upon reaching here.
diff --git a/tools/releasetools/common.py b/tools/releasetools/common.py
index 4e2346c..e381676 100644
--- a/tools/releasetools/common.py
+++ b/tools/releasetools/common.py
@@ -121,15 +121,26 @@
 
 
 def Run(args, verbose=None, **kwargs):
-  """Create and return a subprocess.Popen object.
+  """Creates and returns a subprocess.Popen object.
 
-  Caller can specify if the command line should be printed. The global
-  OPTIONS.verbose will be used if not specified.
+  Args:
+    args: The command represented as a list of strings.
+    verbose: Whether the commands should be shown (default to OPTIONS.verbose
+        if unspecified).
+    kwargs: Any additional args to be passed to subprocess.Popen(), such as env,
+        stdin, etc. stdout and stderr will default to subprocess.PIPE and
+        subprocess.STDOUT respectively unless caller specifies any of them.
+
+  Returns:
+    A subprocess.Popen object.
   """
   if verbose is None:
     verbose = OPTIONS.verbose
+  if 'stdout' not in kwargs and 'stderr' not in kwargs:
+    kwargs['stdout'] = subprocess.PIPE
+    kwargs['stderr'] = subprocess.STDOUT
   if verbose:
-    print("  running: ", " ".join(args))
+    print("  Running: \"{}\"".format(" ".join(args)))
   return subprocess.Popen(args, **kwargs)
 
 
@@ -443,8 +454,7 @@
   avbtool = os.getenv('AVBTOOL') or info_dict["avb_avbtool"]
   pubkey_path = MakeTempFile(prefix="avb-", suffix=".pubkey")
   proc = Run(
-      [avbtool, "extract_public_key", "--key", key, "--output", pubkey_path],
-      stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+      [avbtool, "extract_public_key", "--key", key, "--output", pubkey_path])
   stdoutdata, _ = proc.communicate()
   assert proc.returncode == 0, \
       "Failed to extract pubkey for {}:\n{}".format(
@@ -551,9 +561,10 @@
     fn = os.path.join(sourcedir, "recovery_dtbo")
     cmd.extend(["--recovery_dtbo", fn])
 
-  p = Run(cmd, stdout=subprocess.PIPE)
-  p.communicate()
-  assert p.returncode == 0, "mkbootimg of %s image failed" % (partition_name,)
+  proc = Run(cmd)
+  output, _ = proc.communicate()
+  assert proc.returncode == 0, \
+      "Failed to run mkbootimg of {}:\n{}".format(partition_name, output)
 
   if (info_dict.get("boot_signer") == "true" and
       info_dict.get("verity_key")):
@@ -568,9 +579,10 @@
     cmd.extend([path, img.name,
                 info_dict["verity_key"] + ".pk8",
                 info_dict["verity_key"] + ".x509.pem", img.name])
-    p = Run(cmd, stdout=subprocess.PIPE)
-    p.communicate()
-    assert p.returncode == 0, "boot_signer of %s image failed" % path
+    proc = Run(cmd)
+    output, _ = proc.communicate()
+    assert proc.returncode == 0, \
+        "Failed to run boot_signer of {} image:\n{}".format(path, output)
 
   # Sign the image if vboot is non-empty.
   elif info_dict.get("vboot"):
@@ -588,9 +600,10 @@
            info_dict["vboot_subkey"] + ".vbprivk",
            img_keyblock.name,
            img.name]
-    p = Run(cmd, stdout=subprocess.PIPE)
-    p.communicate()
-    assert p.returncode == 0, "vboot_signer of %s image failed" % path
+    proc = Run(cmd)
+    proc.communicate()
+    assert proc.returncode == 0, \
+        "Failed to run vboot_signer of {} image:\n{}".format(path, output)
 
     # Clean up the temp files.
     img_unsigned.close()
@@ -607,10 +620,11 @@
     args = info_dict.get("avb_" + partition_name + "_add_hash_footer_args")
     if args and args.strip():
       cmd.extend(shlex.split(args))
-    p = Run(cmd, stdout=subprocess.PIPE)
-    p.communicate()
-    assert p.returncode == 0, "avbtool add_hash_footer of %s failed" % (
-        partition_name,)
+    proc = Run(cmd)
+    output, _ = proc.communicate()
+    assert proc.returncode == 0, \
+        "Failed to run 'avbtool add_hash_footer' of {}:\n{}".format(
+            partition_name, output)
 
   img.seek(os.SEEK_SET, 0)
   data = img.read()
@@ -682,9 +696,9 @@
     cmd = ["unzip", "-o", "-q", filename, "-d", dirname]
     if pattern is not None:
       cmd.extend(pattern)
-    p = Run(cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
-    stdoutdata, _ = p.communicate()
-    if p.returncode != 0:
+    proc = Run(cmd)
+    stdoutdata, _ = proc.communicate()
+    if proc.returncode != 0:
       raise ExternalError(
           "Failed to unzip input target-files \"{}\":\n{}".format(
               filename, stdoutdata))
@@ -926,15 +940,14 @@
               key + OPTIONS.private_key_suffix,
               input_name, output_name])
 
-  p = Run(cmd, stdin=subprocess.PIPE, stdout=subprocess.PIPE,
-          stderr=subprocess.STDOUT)
+  proc = Run(cmd, stdin=subprocess.PIPE)
   if password is not None:
     password += "\n"
-  stdoutdata, _ = p.communicate(password)
-  if p.returncode != 0:
+  stdoutdata, _ = proc.communicate(password)
+  if proc.returncode != 0:
     raise ExternalError(
         "Failed to run signapk.jar: return code {}:\n{}".format(
-            p.returncode, stdoutdata))
+            proc.returncode, stdoutdata))
 
 
 def CheckSize(data, target, info_dict):
@@ -1267,8 +1280,7 @@
         first_line = i + 4
     f.close()
 
-    p = Run([self.editor, "+%d" % (first_line,), self.pwfile])
-    _, _ = p.communicate()
+    Run([self.editor, "+%d" % (first_line,), self.pwfile]).communicate()
 
     return self.ReadFile()
 
@@ -1396,10 +1408,10 @@
   if isinstance(entries, basestring):
     entries = [entries]
   cmd = ["zip", "-d", zip_filename] + entries
-  proc = Run(cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+  proc = Run(cmd)
   stdoutdata, _ = proc.communicate()
-  assert proc.returncode == 0, "Failed to delete %s:\n%s" % (entries,
-                                                             stdoutdata)
+  assert proc.returncode == 0, \
+      "Failed to delete {}:\n{}".format(entries, stdoutdata)
 
 
 def ZipClose(zip_file):
@@ -1860,9 +1872,9 @@
                     '--output={}.new.dat.br'.format(self.path),
                     '{}.new.dat'.format(self.path)]
       print("Compressing {}.new.dat with brotli".format(self.partition))
-      p = Run(brotli_cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
-      stdoutdata, _ = p.communicate()
-      assert p.returncode == 0, \
+      proc = Run(brotli_cmd)
+      stdoutdata, _ = proc.communicate()
+      assert proc.returncode == 0, \
           'Failed to compress {}.new.dat with brotli:\n{}'.format(
               self.partition, stdoutdata)
 
diff --git a/tools/releasetools/ota_from_target_files.py b/tools/releasetools/ota_from_target_files.py
index 755eda9..7ea53f8 100755
--- a/tools/releasetools/ota_from_target_files.py
+++ b/tools/releasetools/ota_from_target_files.py
@@ -394,8 +394,7 @@
       signing_key = common.MakeTempFile(prefix="key-", suffix=".key")
       cmd.extend(["-out", signing_key])
 
-      get_signing_key = common.Run(cmd, verbose=False, stdout=subprocess.PIPE,
-                                   stderr=subprocess.STDOUT)
+      get_signing_key = common.Run(cmd, verbose=False)
       stdoutdata, _ = get_signing_key.communicate()
       assert get_signing_key.returncode == 0, \
           "Failed to get signing key: {}".format(stdoutdata)
@@ -411,7 +410,7 @@
     """Signs the given input file. Returns the output filename."""
     out_file = common.MakeTempFile(prefix="signed-", suffix=".bin")
     cmd = [self.signer] + self.signer_args + ['-in', in_file, '-out', out_file]
-    signing = common.Run(cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+    signing = common.Run(cmd)
     stdoutdata, _ = signing.communicate()
     assert signing.returncode == 0, \
         "Failed to sign the input file: {}".format(stdoutdata)
diff --git a/tools/releasetools/test_add_img_to_target_files.py b/tools/releasetools/test_add_img_to_target_files.py
index a73746e..cc7b887 100644
--- a/tools/releasetools/test_add_img_to_target_files.py
+++ b/tools/releasetools/test_add_img_to_target_files.py
@@ -16,7 +16,6 @@
 
 import os
 import os.path
-import subprocess
 import unittest
 import zipfile
 
@@ -45,9 +44,11 @@
 
     # Calls an external binary to convert the proto message.
     cmd = ["care_map_generator", "--parse_proto", file_name, text_file]
-    p = common.Run(cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
-    p.communicate()
-    self.assertEqual(0, p.returncode)
+    proc = common.Run(cmd)
+    output, _ = proc.communicate()
+    self.assertEqual(
+        0, proc.returncode,
+        "Failed to run care_map_generator:\n{}".format(output))
 
     with open(text_file, 'r') as verify_fp:
       plain_text = verify_fp.read()
diff --git a/tools/releasetools/test_ota_from_target_files.py b/tools/releasetools/test_ota_from_target_files.py
index 1d8a786..29e0d83 100644
--- a/tools/releasetools/test_ota_from_target_files.py
+++ b/tools/releasetools/test_ota_from_target_files.py
@@ -17,7 +17,6 @@
 import copy
 import os
 import os.path
-import subprocess
 import unittest
 import zipfile
 
@@ -1024,11 +1023,11 @@
            '--signature_size', str(self.SIGNATURE_SIZE),
            '--metadata_hash_file', metadata_sig_file,
            '--payload_hash_file', payload_sig_file]
-    proc = common.Run(cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+    proc = common.Run(cmd)
     stdoutdata, _ = proc.communicate()
     self.assertEqual(
         0, proc.returncode,
-        'Failed to run brillo_update_payload: {}'.format(stdoutdata))
+        'Failed to run brillo_update_payload:\n{}'.format(stdoutdata))
 
     signed_metadata_sig_file = payload_signer.Sign(metadata_sig_file)
 
diff --git a/tools/releasetools/test_validate_target_files.py b/tools/releasetools/test_validate_target_files.py
index 0aaf069..ecb7fde 100644
--- a/tools/releasetools/test_validate_target_files.py
+++ b/tools/releasetools/test_validate_target_files.py
@@ -21,7 +21,6 @@
 import os
 import os.path
 import shutil
-import subprocess
 import unittest
 
 import build_image
@@ -44,7 +43,7 @@
       kernel_fp.write(os.urandom(10))
 
     cmd = ['mkbootimg', '--kernel', kernel, '-o', output_file]
-    proc = common.Run(cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+    proc = common.Run(cmd)
     stdoutdata, _ = proc.communicate()
     self.assertEqual(
         0, proc.returncode,
@@ -53,7 +52,7 @@
     cmd = ['boot_signer', '/boot', output_file,
            os.path.join(self.testdata_dir, 'testkey.pk8'),
            os.path.join(self.testdata_dir, 'testkey.x509.pem'), output_file]
-    proc = common.Run(cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+    proc = common.Run(cmd)
     stdoutdata, _ = proc.communicate()
     self.assertEqual(
         0, proc.returncode,
@@ -123,7 +122,7 @@
     system_root = common.MakeTempDir()
     cmd = ['mkuserimg_mke2fs', '-s', system_root, output_file, 'ext4',
            '/system', str(image_size), '-j', '0']
-    proc = common.Run(cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+    proc = common.Run(cmd)
     stdoutdata, _ = proc.communicate()
     self.assertEqual(
         0, proc.returncode,
diff --git a/tools/releasetools/validate_target_files.py b/tools/releasetools/validate_target_files.py
index 09f800f..1cc4a60 100755
--- a/tools/releasetools/validate_target_files.py
+++ b/tools/releasetools/validate_target_files.py
@@ -35,7 +35,6 @@
 import logging
 import os.path
 import re
-import subprocess
 import zipfile
 
 import common
@@ -256,7 +255,7 @@
         continue
 
       cmd = ['boot_signer', '-verify', image_path, '-certificate', verity_key]
-      proc = common.Run(cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+      proc = common.Run(cmd)
       stdoutdata, _ = proc.communicate()
       assert proc.returncode == 0, \
           'Failed to verify {} with boot_signer:\n{}'.format(image, stdoutdata)
@@ -299,7 +298,7 @@
         continue
 
       cmd = ['verity_verifier', image_path, '-mincrypt', verity_key_mincrypt]
-      proc = common.Run(cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+      proc = common.Run(cmd)
       stdoutdata, _ = proc.communicate()
       assert proc.returncode == 0, \
           'Failed to verify {} with verity_verifier (key: {}):\n{}'.format(
@@ -328,7 +327,7 @@
             partition, info_dict, options[key_name])
         cmd.extend(["--expected_chain_partition", chained_partition_arg])
 
-    proc = common.Run(cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+    proc = common.Run(cmd)
     stdoutdata, _ = proc.communicate()
     assert proc.returncode == 0, \
         'Failed to verify {} with verity_verifier (key: {}):\n{}'.format(