TR comments incorporated for Chapter10 FD

Chapter10/usb/src/main.rs

@@ -1,7 +1,6 @@
 use libusb::{Context, Device, DeviceHandle};
 use std::fs::File;
 use std::io::Write;
-use std::result::Result;
 use std::time::Duration;
 
 use std::fmt;

Chapter10/usb/target/rls/.rustc_info.json

@@ -1 +1 @@
-{"rustc_fingerprint":4503571881771466578,"outputs":{"1164083562126845933":["rustc 1.43.0 (4fb7144ed 2020-04-20)\nbinary: rustc\ncommit-hash: 4fb7144ed159f94491249e86d5bbd033b5d60550\ncommit-date: 2020-04-20\nhost: x86_64-apple-darwin\nrelease: 1.43.0\nLLVM version: 9.0\n",""],"4476964694761187371":["___\nlib___.rlib\nlib___.dylib\nlib___.dylib\nlib___.a\nlib___.dylib\n/Users/prabhueshwarla/.rustup/toolchains/stable-x86_64-apple-darwin\ndebug_assertions\nproc_macro\ntarget_arch=\"x86_64\"\ntarget_endian=\"little\"\ntarget_env=\"\"\ntarget_family=\"unix\"\ntarget_feature=\"fxsr\"\ntarget_feature=\"sse\"\ntarget_feature=\"sse2\"\ntarget_feature=\"sse3\"\ntarget_feature=\"ssse3\"\ntarget_os=\"macos\"\ntarget_pointer_width=\"64\"\ntarget_vendor=\"apple\"\nunix\n",""]},"successes":{}}
+{"rustc_fingerprint":4503571881771466578,"outputs":{"4476964694761187371":["___\nlib___.rlib\nlib___.dylib\nlib___.dylib\nlib___.a\nlib___.dylib\n/Users/prabhueshwarla/.rustup/toolchains/stable-x86_64-apple-darwin\ndebug_assertions\nproc_macro\ntarget_arch=\"x86_64\"\ntarget_endian=\"little\"\ntarget_env=\"\"\ntarget_family=\"unix\"\ntarget_feature=\"fxsr\"\ntarget_feature=\"sse\"\ntarget_feature=\"sse2\"\ntarget_feature=\"sse3\"\ntarget_feature=\"ssse3\"\ntarget_os=\"macos\"\ntarget_pointer_width=\"64\"\ntarget_vendor=\"apple\"\nunix\n",""],"1164083562126845933":["rustc 1.43.0 (4fb7144ed 2020-04-20)\nbinary: rustc\ncommit-hash: 4fb7144ed159f94491249e86d5bbd033b5d60550\ncommit-date: 2020-04-20\nhost: x86_64-apple-darwin\nrelease: 1.43.0\nLLVM version: 9.0\n",""]},"successes":{}}

Chapter10/usb/usb_details.txt

@@ -0,0 +1,12 @@
+
+USB Device details
+Manufacturer: Apple Inc.
+Product: Apple Internal Keyboard / Trackpad
+Serial number: Not available
+Bus number: 20
+Device address: 2
+Vendor Id: 1452
+Product Id: 601
+Major device version: 2
+Minor device version: 2
+