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part of #368
Also, the default log level is changed to INFO.
By the way, it seems that
EnvFilter
doesn't implementFilter
, and therefore we cannot use per-layer filtering implemented in tokio-rs/tracing#1523. This would lead to problems with integrating with tokio-console's Tokio-runtime tracing: if we enable tokio-runtime's tracing feature, all tokio tracing logs will be printed in stdout. We will fix this when the upstream implementsFilter
forEnvFilter
.