[x] don't log failing sccache stops if the client failed due to a non-running server
[x] don't log failing sccache stops if the client failed due to a non-running server

Closes: #8538

libra/libra,libra/libra,aptos-labs/aptos-core,libra/libra,libra/libra,aptos-labs/aptos-core,aptos-labs/aptos-core,libra/libra,aptos-labs/aptos-core,aptos-labs/aptos-core,aptos-labs/aptos-core,aptos-labs/aptos-core