show output of failed commands

.github/workflows/release.py

@@ -3,15 +3,29 @@
 import re
 import subprocess
 import shlex
+import sys
 
 MAIN_FILE = 'main.go'
 VERSION_LINE = re.compile('version = "([0-9]+.[0-9]+.[0-9]+)"')
 
 
 def sh(cmd: str, env: dict | None = None) -> str:
     cmd_parsed = shlex.split(cmd)
-    output = subprocess.run(cmd_parsed, check=True, text=True, capture_output=True, env=env)
-    return output.stdout.strip()
+    proc = subprocess.run(cmd_parsed, check=True, text=True, capture_output=True, env=env)
+    stdout = proc.stdout.strip()
+    code = proc.returncode
+    if code:
+        out = ''
+        stderr = proc.stderr.strip()
+        if stderr:
+            out += f'stderr: {stderr}'
+        if stdout:
+            prefix = ', ' if out else ''
+            out += f'{prefix}stdout: {stdout}'
+        print(f'Command {cmd} exited with code {code}, output: {out}')
+        sys.exit(code)
+
+    return proc.stdout.strip()
 
 
 def get_current_version() -> str: