examples: Initialize env_logger to actually see log output
#145
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`log` only provides the facade, and needs an explicitly initialized logger to emit output to `stdout`. The `env_logger` crate is typically used across the Rust ecosystem, but unfortunately initializes with a default of `off` unless the `RUST_LOG` variable is set: default it to `trace` instead (we mostly log on `info` though).
janie177
approved these changes
Jan 19, 2023
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logonly provides the facade, and needs an explicitly initialized logger to emit output tostdout. Theenv_loggercrate is typically used across the Rust ecosystem, but unfortunately initializes with a default ofoffunless theRUST_LOGvariable is set: default it totraceinstead (we mostly log oninfothough).