rust: Update rand_core dependency to 0.2.0-pre.0.

src/rust/Cargo.lock

@@ -6,7 +6,7 @@ dependencies = [
  "external 0.0.1",
  "libc 0.2.39 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.5.0-pre.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand_core 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_core 0.2.0-pre.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "smartlist 0.0.1",
  "tor_allocate 0.0.1",
  "tor_log 0.1.0",
@@ -61,11 +61,6 @@ dependencies = [
  "rand_core 0.2.0-pre.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "rand_core"
-version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "rand_core"
 version = "0.2.0-pre.0"
@@ -120,6 +115,5 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum generic-array 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ef25c5683767570c2bbd7deba372926a55eaae9982d7726ee2a1050239d45b9d"
 "checksum libc 0.2.39 (registry+https://github.com/rust-lang/crates.io-index)" = "f54263ad99207254cf58b5f701ecb432c717445ea2ee8af387334bdd1a03fdff"
 "checksum rand 0.5.0-pre.2 (registry+https://github.com/rust-lang/crates.io-index)" = "3795e4701d9628a63a84d0289e66279883b40df165fca7caed7b87122447032a"
-"checksum rand_core 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "0224284424a4b818387b58d59336c288f99b48f69681aa60cc681fe038bbca5d"
 "checksum rand_core 0.2.0-pre.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c7255ffbdb188d5be1a69b6f9f3cf187de4207430b9e79ed5b76458a6b20de9a"
 "checksum typenum 1.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "13a99dc6780ef33c78780b826cf9d2a78840b72cae9474de4bcaf9051e60ebbd"

src/rust/crypto/Cargo.toml

@@ -13,7 +13,7 @@ crate_type = ["rlib", "staticlib"]
 [dependencies]
 libc = "=0.2.39"
 digest = "=0.7.2"
-rand_core = "=0.1.0"
+rand_core = "=0.2.0-pre.0"
 
 external = { path = "../external" }
 smartlist = { path = "../smartlist" }