Error clarification

[rogurotus]

I get failed to verify rtsp auth tag (RtcpFailedToVerifyAuthTag) errors intermittently but the description of the error is not sufficient to identify the problem.

it could be:
different encryption methods,
broken package,
wrong auth tag

[codecov]

Codecov Report

Patch coverage: 68.75% and project coverage change: -0.12% ⚠️

Comparison is base (de25e64) 61.58% compared to head (ca96006) 61.47%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #470      +/-   ##
==========================================
- Coverage   61.58%   61.47%   -0.12%     
==========================================
  Files         537      537              
  Lines       49511    49511              
  Branches    12316    12314       -2     
==========================================
- Hits        30492    30436      -56     
- Misses       9875     9888      +13     
- Partials     9144     9187      +43     

Files Changed	Coverage Δ
...nts/src/algorithms/select_settings/tie_breaking.rs	78.26% <ø> (-21.74%)	⬇️
rtp/src/codecs/opus/opus_test.rs	60.00% <ø> (-4.29%)	⬇️
srtp/src/cipher/cipher_aes_cm_hmac_sha1.rs	71.63% <0.00%> (-1.56%)	⬇️
srtp/src/error.rs	0.00% <0.00%> (ø)
turn/src/proto/dontfrag/dontfrag_test.rs	73.33% <ø> (-3.14%)	⬇️
util/src/vnet/conn_map/conn_map_test.rs	45.79% <100.00%> (ø)
util/src/vnet/net/net_test.rs	41.02% <100.00%> (ø)

... and 18 files with indirect coverage changes

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[rainliu]

LGTM. and thanks for fix clippy error.