---

yaml
---
r: 50475
b: refs/heads/auto
c: 3044f5e
h: refs/heads/master
i:
  50473: 2a8677d
  50471: 3b35d1c
v: v3

Author: steveklabnik

[refs]

@@ -14,5 +14,5 @@ refs/heads/try3: 9387340aab40a73e8424c48fd42f0c521a4875c0
 refs/tags/release-0.3.1: 495bae036dfe5ec6ceafd3312b4dca48741e845b
 refs/tags/release-0.4: e828ea2080499553b97dfe33b3f4d472b4562ad7
 refs/tags/release-0.5: 7e3bcfbf21278251ee936ad53e92e9b719702d73
-refs/heads/auto: 34b2336dd08c7d8eeb8a79cb9c06c89ccb1639cb
+refs/heads/auto: 3044f5e2b64ae8c0ee726ec42f3d2a3faca9e77e
 refs/heads/servo: af82457af293e2a842ba6b7759b70288da276167

branches/auto/doc/rust.md

@@ -3251,6 +3251,28 @@ of runtime logging modules follows.
 * `::rt::backtrace` Log a backtrace on task failure
 * `::rt::callback` Unused
 
+#### Logging Expressions
+
+Rust provides several macros to log information. Here's a simple Rust program
+that demonstrates all four of them:
+
+```rust
+fn main() {
+    error!("This is an error log")
+    warn!("This is a warn log")
+    info!("this is an info log")
+    debug!("This is a dubug log")
+}
+```
+
+These four log levels correspond to levels 1-4, as controlled by `RUST_LOG`:
+
+```bash
+$ RUST_LOG=rust=3 ./rust
+rust: ~"\"This is an error log\""
+rust: ~"\"This is a warn log\""
+rust: ~"\"this is an info log\""
+```
 
 # Appendix: Rationales and design tradeoffs
 

branches/auto/src/compiletest/procsrv.rs

@@ -26,7 +26,7 @@ fn target_env(lib_path: ~str, prog: ~str) -> ~[(~str,~str)] {
 
     // Make sure we include the aux directory in the path
     assert!(prog.ends_with(~".exe"));
-    let aux_path = prog.slice(0u, prog.len() - 4u).to_owned() + ~".libaux";
+    let aux_path = prog.slice(0u, prog.len() - 4u) + ~".libaux";
 
     env = do vec::map(env) |pair| {
         let (k,v) = *pair;