Force use of the parent directory for indirect dependancies

Signed-off-by: Joe Richey <joerichey@google.com>

Author: josephlr

testing/Cargo.toml

@@ -17,12 +17,16 @@ name = "double_fault_stack_overflow"
 harness = false
 
 [dependencies]
-bootloader = "0.9.3"
-uart_16550 = "0.2.0"
+bootloader = "0.9.10"
+uart_16550 = "0.2.8"
 spin = "0.5.0"
 
+# Overwrite the x86_64 crate for both direct and indirect dependencies.
 [dependencies.x86_64]
 path = ".."
+[patch.crates-io]
+x86_64 = { path = ".." }
+
 
 [dependencies.lazy_static]
 version = "1.3.0"