Always print backtrace on error inside fork (#5431)

RX14 · web-flow · commit 3a5fde09879f · 2017-12-22T12:47:11.000Z
diff --git a/src/process.cr b/src/process.cr
@@ -104,7 +104,7 @@ class Process
         yield
         LibC._exit 0
       rescue ex
-        ex.inspect STDERR
+        ex.inspect_with_backtrace STDERR
         STDERR.flush
         LibC._exit 1
       ensure
