=== RUN   TestDownloadBodyError
    downloader_test.go:69: 
        	Error Trace:	downloader_test.go:69
        	Error:      	Not equal: 
        	            	expected: "download progress from %s has fetched %s @ %sps"
        	            	actual  : "download from %s failed at %s @ %sps: %s"
        	            	
        	            	Diff:
        	            	--- Expected
        	            	+++ Actual
        	            	@@ -1 +1 @@
        	            	-download progress from %s has fetched %s @ %sps
        	            	+download from %s failed at %s @ %sps: %s
        	Test:       	TestDownloadBodyError
--- FAIL: TestDownloadBodyError (0.01s)