diff --git a/listings/ch05-using-structs-to-structure-related-data/no-listing-02-reference-in-struct/Cargo.lock b/listings/ch05-using-structs-to-structure-related-data/no-listing-02-reference-in-struct/Cargo.lock
index bede081..5804b18 100755
--- a/listings/ch05-using-structs-to-structure-related-data/no-listing-02-reference-in-struct/Cargo.lock
+++ b/listings/ch05-using-structs-to-structure-related-data/no-listing-02-reference-in-struct/Cargo.lock
@@ -3,4 +3,3 @@
 [[package]]
 name = "structs"
 version = "0.1.0"
-
diff --git a/listings/ch05-using-structs-to-structure-related-data/no-listing-03-associated-functions/target/CACHEDIR.TAG b/listings/ch05-using-structs-to-structure-related-data/no-listing-03-associated-functions/target/CACHEDIR.TAG
deleted file mode 100644
index 20d7c31..0000000
--- a/listings/ch05-using-structs-to-structure-related-data/no-listing-03-associated-functions/target/CACHEDIR.TAG
+++ /dev/null
@@ -1,3 +0,0 @@
-Signature: 8a477f597d28d172789f06886806bc55
-# This file is a cache directory tag created by cargo.
-# For information about cache directory tags see https://bford.info/cachedir/
diff --git a/listings/ch05-using-structs-to-structure-related-data/no-listing-03-associated-functions/target/rls/CACHEDIR.TAG b/listings/ch05-using-structs-to-structure-related-data/no-listing-03-associated-functions/target/rls/CACHEDIR.TAG
deleted file mode 100644
index 20d7c31..0000000
--- a/listings/ch05-using-structs-to-structure-related-data/no-listing-03-associated-functions/target/rls/CACHEDIR.TAG
+++ /dev/null
@@ -1,3 +0,0 @@
-Signature: 8a477f597d28d172789f06886806bc55
-# This file is a cache directory tag created by cargo.
-# For information about cache directory tags see https://bford.info/cachedir/
diff --git a/listings/ch05-using-structs-to-structure-related-data/no-listing-03-associated-functions/target/rls/debug/.cargo-lock b/listings/ch05-using-structs-to-structure-related-data/no-listing-03-associated-functions/target/rls/debug/.cargo-lock
deleted file mode 100644
index e69de29..0000000
diff --git a/listings/ch05-using-structs-to-structure-related-data/no-listing-03-associated-functions/target/rls/debug/.fingerprint/rectangles-6066a8348ac7f40b/invoked.timestamp b/listings/ch05-using-structs-to-structure-related-data/no-listing-03-associated-functions/target/rls/debug/.fingerprint/rectangles-6066a8348ac7f40b/invoked.timestamp
deleted file mode 100644
index e00328d..0000000
--- a/listings/ch05-using-structs-to-structure-related-data/no-listing-03-associated-functions/target/rls/debug/.fingerprint/rectangles-6066a8348ac7f40b/invoked.timestamp
+++ /dev/null
@@ -1 +0,0 @@
-This file has an mtime of when this was started.
\ No newline at end of file
diff --git a/listings/ch05-using-structs-to-structure-related-data/no-listing-03-associated-functions/target/rls/debug/.fingerprint/rectangles-937cd89110303d07/invoked.timestamp b/listings/ch05-using-structs-to-structure-related-data/no-listing-03-associated-functions/target/rls/debug/.fingerprint/rectangles-937cd89110303d07/invoked.timestamp
deleted file mode 100644
index e00328d..0000000
--- a/listings/ch05-using-structs-to-structure-related-data/no-listing-03-associated-functions/target/rls/debug/.fingerprint/rectangles-937cd89110303d07/invoked.timestamp
+++ /dev/null
@@ -1 +0,0 @@
-This file has an mtime of when this was started.
\ No newline at end of file
diff --git a/listings/ch05-using-structs-to-structure-related-data/no-listing-03-associated-functions/target/rls/debug/incremental/rectangles-2as79s7g9rucu/s-gcqq22m2rv-kx4l9d.lock b/listings/ch05-using-structs-to-structure-related-data/no-listing-03-associated-functions/target/rls/debug/incremental/rectangles-2as79s7g9rucu/s-gcqq22m2rv-kx4l9d.lock
deleted file mode 100644
index e69de29..0000000