Update other examples to use set_global_default.

[samscott89]

Motivation

Same as in #183, extended to the other examples. When using tokio, need to either use global subscriber, or experimental-tracing tokio feature.

Solution

Use set_global_default in examples.

TODO?

Might be a common mistake people make. Perhaps document this behaviour and reference in the examples somewhere.

[hawkw]

TODO?

Might be a common mistake people make. Perhaps document this behaviour and reference in the examples somewhere.

I updated the documentation in #171 to try and highlight this a little better; do you think that's sufficient, or is there anything else we ought to do?

[hawkw]

thanks, this is great!

[samscott89]

TODO?

Might be a common mistake people make. Perhaps document this behaviour and reference in the examples somewhere.

I updated the documentation in #171 to try and highlight this a little better; do you think that's sufficient, or is there anything else we ought to do?

Oh that's really useful information! Makes it a lot clearer.
Perhaps just bumping the visibility a bit, by referencing the section in the part which talks about set_global_default ~> https://docs.rs/tracing/0.1.3/tracing/#in-executables for example?

[hawkw]

TODO?

Might be a common mistake people make. Perhaps document this behaviour and reference in the examples somewhere.

I updated the documentation in #171 to try and highlight this a little better; do you think that's sufficient, or is there anything else we ought to do?

Oh that's really useful information! Makes it a lot clearer.
Perhaps just bumping the visibility a bit, by referencing the section in the part which talks about set_global_default ~> https://docs.rs/tracing/0.1.3/tracing/#in-executables for example?

Yeah, that's a good call, we should probably link it there. Feel free to add that, or I'll get to it eventually.