commit 256e7ade568bd33160656b099f53752f08ed01d1
from: Thomas Leonard <thomas.leonard@docker.com>
date: Fri Feb 05 16:32:51 2016 UTC

Fix format string error

Error was:

    error handling connection error negotiating version:%!(EXTRA *errors.errorString=bad version negotiation) will close

Signed-off-by: Thomas Leonard <thomas.leonard@docker.com>

commit - 6e66f3c0b53654afdd46a2b79cbb0b3eee57d57c
commit + 256e7ade568bd33160656b099f53752f08ed01d1
blob - 5e305f87cbefdf120171822a73dd51b8fd2e13ac
blob + 09a3633d1aeadda61c049a24a985c1230e145a93
--- server.go
+++ server.go
@@ -32,7 +32,7 @@ func ServeConn(ctx context.Context, cn net.Conn, handl
 
 	if err := servernegotiate(negctx, ch, DefaultVersion); err != nil {
 		// TODO(stevvooe): Need better error handling and retry support here.
-		return fmt.Errorf("error negotiating version:", err)
+		return fmt.Errorf("error negotiating version: %s", err)
 	}
 
 	ctx = withVersion(ctx, DefaultVersion)