diff --git a/Chapter10/command-line-args/src/main.rs b/Chapter10/command-line-args/src/main.rs
index 8e658e9..81d0d62 100644
--- a/Chapter10/command-line-args/src/main.rs
+++ b/Chapter10/command-line-args/src/main.rs
@@ -16,7 +16,7 @@ impl Exclusion {
 fn walk(
     dir: &Path,
     exclusion: &Option<Exclusion>,
-    cb: &Fn(&DirEntry),
+    cb: &dyn Fn(&DirEntry),
     recurse: bool,
 ) -> io::Result<()> {
     for entry in dir.read_dir()? {
@@ -86,10 +86,9 @@ fn main() -> io::Result<()> {
         )
         .get_matches();
 
-    let filter_conf = matches.value_of("match").unwrap_or("");
     let recurse = matches.is_present("recursive");
     let exclusions = matches.value_of("exclude").map(|e| Exclusion(e.into()));
-    
+
     match matches.subcommand() {
         ("files", Some(subcmd)) => {
             let path = Path::new(subcmd.value_of("PATH").unwrap());
diff --git a/Chapter10/logging/log4rs.yml b/Chapter10/logging/log4rs.yml
index 575afbc..6ae2709 100644
--- a/Chapter10/logging/log4rs.yml
+++ b/Chapter10/logging/log4rs.yml
@@ -1,4 +1,3 @@
-# Scan this file for changes every 30 seconds
 refresh_rate: 30 seconds
 
 appenders:
@@ -20,5 +19,4 @@ loggers:
   special-target:
     level: info
     appenders:
-      - outfile
-    additive: false
\ No newline at end of file
+      - outfile
\ No newline at end of file
diff --git a/Chapter10/logging/outfile.log b/Chapter10/logging/outfile.log
index a9ecb1d..d8de4bd 100644
--- a/Chapter10/logging/outfile.log
+++ b/Chapter10/logging/outfile.log
@@ -1,2 +1 @@
-2019-08-20T13:18:17.023781824+02:00 - WARNING, stuff is breaking down
-2019-08-21T18:50:13.813701633+02:00 - WARNING, stuff is breaking down
+2019-09-01T12:45:25.256922311+02:00 - WARNING, stuff is breaking down
diff --git a/Chapter10/logging/src/main.rs b/Chapter10/logging/src/main.rs
index a54fad2..7d4f8e7 100644
--- a/Chapter10/logging/src/main.rs
+++ b/Chapter10/logging/src/main.rs
@@ -50,7 +50,7 @@ fn log_some_stuff() {
     error!("ERROR: stopping ...");
 }
 
-const USE_CUSTOM: bool = false;
+const USE_CUSTOM: bool = true;
 
 fn main() {
     if USE_CUSTOM { 
diff --git a/Chapter10/rusty-ml/models/best.ot b/Chapter10/rusty-ml/models/best.ot
deleted file mode 100644
index c3953eb..0000000
Binary files a/Chapter10/rusty-ml/models/best.ot and /dev/null differ
diff --git a/Chapter10/rusty-ml/models/latest.tch b/Chapter10/rusty-ml/models/latest.tch
deleted file mode 100644
index e9e5c73..0000000
Binary files a/Chapter10/rusty-ml/models/latest.tch and /dev/null differ
diff --git a/Chapter10/sub-processes/src/main.rs b/Chapter10/sub-processes/src/main.rs
index 65816c3..b489ecc 100644
--- a/Chapter10/sub-processes/src/main.rs
+++ b/Chapter10/sub-processes/src/main.rs
@@ -4,21 +4,27 @@ use std::process::{Command, Stdio};
 
 fn main() -> Result<(), Box<dyn Error + Send + Sync + 'static>> {
     let mut ls_child = Command::new("ls");
-    ls_child.args(&["-alh"]);
-    ls_child.status()?;
+    if !cfg!(target_os = "windows") {
+        ls_child.args(&["-alh"]);
+    }
+    println!("{}", ls_child.status()?);
     ls_child.current_dir("src/");
- 
+    println!("{}", ls_child.status()?);
+
     let env_child = Command::new("env")
         .env("CANARY", "0x5ff")
         .stdout(Stdio::piped())
         .spawn()?;
-    
+
     let env_output = &env_child.wait_with_output()?;
-    let canary = String::from_utf8_lossy(&env_output.stdout).split_ascii_whitespace().filter(|line| *line == "CANARY=0x5ff").count();
+    let canary = String::from_utf8_lossy(&env_output.stdout)
+        .split_ascii_whitespace()
+        .filter(|line| *line == "CANARY=0x5ff")
+        .count();
 
     // found it!
     assert_eq!(canary, 1);
-    
+
     let mut rev_child = Command::new("rev")
         .stdin(Stdio::piped())
         .stdout(Stdio::piped())