Scrub runsc error messages

Removed "error" and "failed to" prefix that don't add value
from messages. Adjusted a few other messages.  In particular,
when the container fail to start, the message returned is easier
for humans to read:

$ docker run --rm --runtime=runsc alpine foobar
docker: Error response from daemon: OCI runtime start failed: <path> did not terminate sucessfully: starting container: starting root container [foobar]: starting sandbox: searching for executable "foobar", cwd: "/", $PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin": no such file or directory

Closes #77

PiperOrigin-RevId: 230022798
Change-Id: I83339017c70dae09e4f9f8e0ea2e554c4d5d5cd1

1 files changed, 2 insertions, 2 deletions

diff --git a/runsc/cmd/delete.go b/runsc/cmd/delete.go
index 8c7c7a5cd..3206b267a 100644
--- a/runsc/cmd/delete.go
+++ b/runsc/cmd/delete.go
@@ -74,13 +74,13 @@ func (d *Delete) execute(ids []string, conf *boot.Config) error {
 				log.Warningf("couldn't find container %q: %v", id, err)
 				return nil
 			}
-			return fmt.Errorf("error loading container %q: %v", id, err)
+			return fmt.Errorf("loading container %q: %v", id, err)
 		}
 		if !d.force && c.Status != container.Created && c.Status != container.Stopped {
 			return fmt.Errorf("cannot delete container that is not stopped without --force flag")
 		}
 		if err := c.Destroy(); err != nil {
-			return fmt.Errorf("error destroying container: %v", err)
+			return fmt.Errorf("destroying container: %v", err)
 		}
 	}
 	return nil