AVRO-3316 [Rust] build breaks in docker build
AVRO-3316 [Rust] build breaks in docker build

Make the test return Unit. No need to return Ok (Result)

Signed-off-by: Martin Tzvetanov Grigorov <467ed6115092226a07ff6116d483984b94cf27b9@apache.org>

apache/avro,apache/avro,apache/avro,apache/avro,apache/avro,apache/avro,apache/avro,apache/avro,apache/avro,apache/avro,apache/avro,apache/avro