fixing log level to avoid sacring users (#452)

libp2p/muxers/mplex/mplex.nim

@@ -187,7 +187,7 @@ method handle*(m: Mplex) {.async, gcsafe.} =
   except LPStreamEOFError as exc:
     trace "Stream EOF", m, msg = exc.msg
   except CatchableError as exc:
-    warn "Unexpected exception in mplex read loop", m, msg = exc.msg
+    debug "Unexpected exception in mplex read loop", m, msg = exc.msg
   finally:
     await m.close()
   trace "Stopped mplex handler", m

libp2p/protocols/secure/secure.nim

@@ -133,7 +133,7 @@ method readOnce*(s: SecureConn,
 
     if not isNil(err):
       if not (err of LPStreamEOFError):
-        warn "Error while reading message from secure connection, closing.",
+        debug "Error while reading message from secure connection, closing.",
           error=err.name,
           message=err.msg,
           connection=s