Avoid tests creating log files in the crate directory.

for the main test this is done by using the tempfile crate to create a temporary directory.

a couple of documentation examples are also marked as no-run to stop them running as doctests
and creating log files.

Index: simplelog/Cargo.toml
===================================================================
--- simplelog.orig/Cargo.toml
+++ simplelog/Cargo.toml
@@ -53,6 +53,9 @@ features = [
     "macros",
 ]
 
+[dev-dependencies.tempfile]
+version = "3"
+
 [features]
 default = [
     "termcolor",
Index: simplelog/src/lib.rs
===================================================================
--- simplelog.orig/src/lib.rs
+++ simplelog/src/lib.rs
@@ -101,7 +101,7 @@ mod tests {
     #[test]
     fn test() {
         let mut i = 0;
-
+	let tempdir = tempfile::tempdir().unwrap();
         CombinedLogger::init({
             let mut vec = Vec::new();
             let mut conf_builder = ConfigBuilder::new();
@@ -115,7 +115,7 @@ mod tests {
             vec.push(WriteLogger::new(
                 LevelFilter::Error,
                 conf_thread_name,
-                File::create("thread_naming.log").unwrap(),
+                File::create(tempdir.path().join("thread_naming.log")).unwrap(),
             ) as Box<dyn SharedLogger>);
 
             for elem in vec![
@@ -148,7 +148,7 @@ mod tests {
                 vec.push(WriteLogger::new(
                     LevelFilter::Error,
                     conf.clone(),
-                    File::create(&format!("error_{}.log", i)).unwrap(),
+                    File::create(tempdir.path().join(&format!("error_{}.log", i))).unwrap(),
                 ) as Box<dyn SharedLogger>);
                 #[cfg(feature = "test")]
                 vec.push(TestLogger::new(LevelFilter::Error, conf.clone()));
@@ -167,7 +167,7 @@ mod tests {
                 vec.push(WriteLogger::new(
                     LevelFilter::Warn,
                     conf.clone(),
-                    File::create(&format!("warn_{}.log", i)).unwrap(),
+                    File::create(tempdir.path().join(&format!("warn_{}.log", i))).unwrap(),
                 ) as Box<dyn SharedLogger>);
                 #[cfg(feature = "test")]
                 vec.push(TestLogger::new(LevelFilter::Warn, conf.clone()));
@@ -186,7 +186,7 @@ mod tests {
                 vec.push(WriteLogger::new(
                     LevelFilter::Info,
                     conf.clone(),
-                    File::create(&format!("info_{}.log", i)).unwrap(),
+                    File::create(tempdir.path().join(&format!("info_{}.log", i))).unwrap(),
                 ) as Box<dyn SharedLogger>);
                 #[cfg(feature = "test")]
                 vec.push(TestLogger::new(LevelFilter::Info, conf.clone()));
@@ -205,7 +205,7 @@ mod tests {
                 vec.push(WriteLogger::new(
                     LevelFilter::Debug,
                     conf.clone(),
-                    File::create(&format!("debug_{}.log", i)).unwrap(),
+                    File::create(tempdir.path().join(&format!("debug_{}.log", i))).unwrap(),
                 ) as Box<dyn SharedLogger>);
                 #[cfg(feature = "test")]
                 vec.push(TestLogger::new(LevelFilter::Debug, conf.clone()));
@@ -224,7 +224,7 @@ mod tests {
                 vec.push(WriteLogger::new(
                     LevelFilter::Trace,
                     conf.clone(),
-                    File::create(&format!("trace_{}.log", i)).unwrap(),
+                    File::create(tempdir.path().join(&format!("trace_{}.log", i))).unwrap(),
                 ) as Box<dyn SharedLogger>);
                 #[cfg(feature = "test")]
                 vec.push(TestLogger::new(LevelFilter::Trace, conf.clone()));
@@ -241,7 +241,7 @@ mod tests {
         trace!("Test Trace");
 
         let mut thread_naming = String::new();
-        File::open("thread_naming.log")
+        File::open(tempdir.path().join("thread_naming.log"))
             .unwrap()
             .read_to_string(&mut thread_naming)
             .unwrap();
@@ -252,27 +252,27 @@ mod tests {
 
         for j in 1..i {
             let mut error = String::new();
-            File::open(&format!("error_{}.log", j))
+            File::open(tempdir.path().join(&format!("error_{}.log", j)))
                 .unwrap()
                 .read_to_string(&mut error)
                 .unwrap();
             let mut warn = String::new();
-            File::open(&format!("warn_{}.log", j))
+            File::open(tempdir.path().join(&format!("warn_{}.log", j)))
                 .unwrap()
                 .read_to_string(&mut warn)
                 .unwrap();
             let mut info = String::new();
-            File::open(&format!("info_{}.log", j))
+            File::open(tempdir.path().join(&format!("info_{}.log", j)))
                 .unwrap()
                 .read_to_string(&mut info)
                 .unwrap();
             let mut debug = String::new();
-            File::open(&format!("debug_{}.log", j))
+            File::open(tempdir.path().join(&format!("debug_{}.log", j)))
                 .unwrap()
                 .read_to_string(&mut debug)
                 .unwrap();
             let mut trace = String::new();
-            File::open(&format!("trace_{}.log", j))
+            File::open(tempdir.path().join(&format!("trace_{}.log", j)))
                 .unwrap()
                 .read_to_string(&mut trace)
                 .unwrap();
Index: simplelog/src/loggers/comblog.rs
===================================================================
--- simplelog.orig/src/loggers/comblog.rs
+++ simplelog/src/loggers/comblog.rs
@@ -29,7 +29,7 @@ impl CombinedLogger {
     /// Fails if another logger is already set globally.
     ///
     /// # Examples
-    /// ```
+    /// ``` no-run
     /// # extern crate simplelog;
     /// # use simplelog::*;
     /// # use std::fs::File;
@@ -60,7 +60,7 @@ impl CombinedLogger {
     /// All loggers need to implement log::Log.
     ///
     /// # Examples
-    /// ```
+    /// ``` no-run
     /// # extern crate simplelog;
     /// # use simplelog::*;
     /// # use std::fs::File;
Index: simplelog/src/loggers/writelog.rs
===================================================================
--- simplelog.orig/src/loggers/writelog.rs
+++ simplelog/src/loggers/writelog.rs
@@ -27,7 +27,7 @@ impl<W: Write + Send + 'static> WriteLog
     /// Fails if another Logger was already initialized.
     ///
     /// # Examples
-    /// ```
+    /// ``` no-run
     /// # extern crate simplelog;
     /// # use simplelog::*;
     /// # use std::fs::File;
@@ -48,7 +48,7 @@ impl<W: Write + Send + 'static> WriteLog
     /// Takes the desired `Level`, `Config` and `Write` struct as arguments. They cannot be changed later on.
     ///
     /// # Examples
-    /// ```
+    /// ``` no-run
     /// # extern crate simplelog;
     /// # use simplelog::*;
     /// # use std::fs::File;