Specify versions for dependent local crates

Author: tyler

Cargo.toml

@@ -9,4 +9,4 @@ bitflags = "1.0"
 libc = "0.2.65"
 nix = "0.13"
 thiserror = "1.0.4"
-userfaultfd-sys = { path = "userfaultfd-sys" }
+userfaultfd-sys = { version = "=0.1.0", path = "userfaultfd-sys" }

userfaultfd-sys/Cargo.toml

@@ -12,4 +12,4 @@ cfg-if = "0.1"
 [build-dependencies]
 bindgen = "0.51"
 cc = "1.0"
-linux-version = { path = "../linux-version" }
+linux-version = { version = "=0.1.0", path = "../linux-version" }