Update capture() to warn about stderr instead of raising CaptureError.

CHANGELOG

@@ -1,3 +1,8 @@
+*unreleased*
+
+* Changed capture() helper to not raise an exception on error, but to warn instead [Jeff Forcier]
+
+
 *2.4.0* June 13, 2008
 
 * Added :normalize_asset_timestamps option to deployment, defaulting to true, which allows asset timestamping to be disabled [John Trupiano]

lib/capistrano/configuration/actions/inspect.rb

@@ -34,7 +34,7 @@ module Capistrano
           invoke_command(command, options.merge(:once => true)) do |ch, stream, data|
             case stream
             when :out then output << data
-            when :err then raise CaptureError, "error processing #{command.inspect}: #{data.inspect}"
+            when :err then warn "[err :: #{ch[:server]}] #{data}"
             end
           end
           output

test/configuration/actions/inspect_test.rb

@@ -37,9 +37,12 @@ class ConfigurationActionsInspectTest < Test::Unit::TestCase
     @config.capture("hostname", :foo => "bar")
   end
 
-  def test_capture_with_stderr_result_should_raise_capture_error
-    @config.expects(:invoke_command).yields(mock("channel"), :err, "boom")
-    assert_raises(Capistrano::CaptureError) { @config.capture("hostname") }
+  def test_capture_with_stderr_should_emit_stderr_via_warn
+    ch = mock("channel")
+    ch.expects(:[]).with(:server).returns(server("capistrano"))
+    @config.expects(:invoke_command).yields(ch, :err, "boom")
+    @config.expects(:warn).with("[err :: capistrano] boom")
+    @config.capture("hostname")
   end
 
   def test_capture_with_stdout_should_aggregate_and_return_stdout