Print more details on test fail

Signed-off-by: Jakub Sztandera <kubuxu@protocol.ai>

cli/chain.go

@@ -1121,7 +1121,8 @@ var SlashConsensusFault = &cli.Command{
 		if err != nil {
 			return err
 		}
-		defer srv.Close()
+		defer srv.Close() //nolint:errcheck
+
 		a := srv.FullNodeAPI()
 		ctx := ReqContext(cctx)
 

cli/test/mockcli.go

@@ -56,7 +56,7 @@ type MockCLIClient struct {
 
 func (c *MockCLIClient) RunCmd(input ...string) string {
 	out, err := c.RunCmdRaw(input...)
-	require.NoError(c.t, err)
+	require.NoError(c.t, err, "output:\n%s", out)
 
 	return out
 }