Update docs to match new logging env var (bytecodealliance#8656)

morenol · May 20, 2024 · 8137539 · 8137539
1 parent 4b46aaf
commit 8137539
Showing 1 changed file with 7 additions and 7 deletions.
diff --git a/docs/cli-logging.md b/docs/cli-logging.md
@@ -4,18 4,18 @@ Wasmtime's libraries use Rust's [`log`] crate to log diagnostic
 information, and the `wasmtime` CLI executable uses [`pretty_env_logger`]
 by default for logging this information to the console.
 
-Basic logging is controlled by the `RUST_LOG` environment variable. For example,
 Basic logging is controlled by the `WASMTIME_LOG` environment variable. For example,
 To enable logging of WASI system calls, similar to the `strace` command on Linux,
-set `RUST_LOG=wasi_common=trace`.
 set `WASMTIME_LOG=wasmtime_wasi=trace`.
 
 ```sh
-$ RUST_LOG=wasi_common=trace wasmtime hello.wasm
 $ WASMTIME_LOG=wasmtime_wasi=trace hello.wasm
 [...]
- TRACE wasi_common::hostcalls_impl::fs  > fd_write(fd=1, iovs_ptr=0x10408, iovs_len=1, nwritten=0x10404)
 TRACE wiggle abi{module="wasi_snapshot_preview1" function="fd_write"} wasmtime_wasi::preview1::wasi_snapshot_preview1 > fd=Fd(1) iovs=*guest 0x14/1
 Hello, world!
- TRACE wasi_common::hostcalls_impl::fs > | *nwritten=14
- TRACE wasi_common::hostcalls > | errno=ESUCCESS (No error occurred. System call completed successfully.)
- TRACE wasi_common::hostcalls_impl::misc > proc_exit(rval=1)
 TRACE wiggle abi{module="wasi_snapshot_preview1" function="fd_write"}: wasmtime_wasi::preview1::wasi_snapshot_preview1: result=Ok(14)
 TRACE wiggle abi{module="wasi_snapshot_preview1" function="proc_exit"}: wasmtime_wasi::preview1::wasi_snapshot_preview1: rval=1
 TRACE wiggle abi{module="wasi_snapshot_preview1" function="proc_exit"}: wasmtime_wasi::preview1::wasi_snapshot_preview1: result=Exited with i32 exit status 1
 ```
 
 Wasmtime can also redirect the log messages into log files, with the