tracing

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Mark Ingram 16806fc12c examples: updates factorial to tracing 0.2 & set DEBUG level (#1182 ) ## Motivation factorial dbg! example doesn't produce any stdout & is referencing tracing 0.1 crate ## Solution update to path reference & set fmt max level DEBUG: ``` $ cargo run --example factorial Jan 10 21:17:47.574 DEBUG factorial: n <= 1 value=false Jan 10 21:17:47.575 DEBUG factorial: n <= 1 value=false ... ```	2021-01-27 14:05:21 -08:00
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factorial.rs	examples: updates factorial to tracing 0.2 & set DEBUG level (#1182 )	2021-01-27 14:05:21 -08:00

examples: updates factorial to tracing 0.2 & set DEBUG level (#1182 )

## Motivation

factorial dbg! example doesn't produce any stdout & is referencing tracing 0.1 crate

## Solution

update to path reference & set fmt max level DEBUG:

```
$ cargo run --example factorial
Jan 10 21:17:47.574 DEBUG factorial: n <= 1 value=false
Jan 10 21:17:47.575 DEBUG factorial: n <= 1 value=false
...
```

2021-01-27 14:05:21 -08:00

factorial.rs

examples: updates factorial to tracing 0.2 & set DEBUG level (#1182 )

2021-01-27 14:05:21 -08:00