|  | @@ -522,15 +522,21 @@ type UserCommit struct {
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				|  |  |  // ValidCommitsWithEmails checks if authors' e-mails of commits are correcponding to users.
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				|  |  |  func ValidCommitsWithEmails(oldCommits *list.List) *list.List {
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				|  |  | +	emails := map[string]string{}
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				|  |  |  	newCommits := list.New()
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				|  |  |  	e := oldCommits.Front()
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				|  |  |  	for e != nil {
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				|  |  |  		c := e.Value.(*git.Commit)
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				|  |  |  
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				|  |  |  		uname := ""
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				|  |  | -		u, err := GetUserByEmail(c.Author.Email)
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				|  |  | -		if err == nil {
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				|  |  | -			uname = u.Name
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				|  |  | +		if v, ok := emails[c.Author.Email]; !ok {
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				|  |  | +			u, err := GetUserByEmail(c.Author.Email)
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				|  |  | +			if err == nil {
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				|  |  | +				uname = u.Name
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				|  |  | +			}
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				|  |  | +			emails[c.Author.Email] = uname
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				|  |  | +		} else {
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				|  |  | +			uname = v
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				|  |  |  		}
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				|  |  |  
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				|  |  |  		newCommits.PushBack(UserCommit{
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