Debugging, Logging
Help you figure out what is going on with your code such as logging, tracing, or assertions.
Tracing
| Recipe | Crates | Categories |
|---|---|---|
| Initialize the logger |  |  |
| Enable basic tracing | | |
| Combine layers | | |
| Configure a custom event formatter | | |
| Events | | |
| Spans | | |
| Add tracing spans to functions | | |
| See also | | |
[tracing.incl: fix (P1)](https://github.com/john-cd/rust_howto/issues/321)
Logging
| Recipe | Crates | Categories |
|---|---|---|
| Log a debug message to the console |   | |
| Log an error message to the console | | |
Log to stdout instead of stderr | | |
| Log messages with a custom logger | | |
| Log to the Unix syslog |  | |
[log.incl: fix (P1)](https://github.com/john-cd/rust_howto/issues/320)
Log Configuration
| Recipe | Crates | Categories |
|---|---|---|
| Enable log levels per module | | |
| Use a custom environment variable to set up logging | | |
| Include a timestamp in log messages |  | |
| Log messages to a custom location |  | |
[config_log.incl: fix (P1)](https://github.com/john-cd/rust_howto/issues/318)
Alternatives
| Recipe | Crates | Categories |
|---|---|---|
log | | |
slog |  | |
log4rs | | |
env_logger | | |
OpenTelemetry | OpenTelemetry Rust documentation⮳ | |
OpenObserve | OpenObserve⮳ | |
[alternatives.incl: open telemetry, open observe (P1)](https://github.com/john-cd/rust_howto/issues/316)
Diagnostic functions
| Recipe | Crates | Categories |
|---|---|---|
| Get the type name of the pointed-to value |  | |
[index: reorganize; dedupe alternatives / log / config_log (P1)](https://github.com/john-cd/rust_howto/issues/319)