Bump parking-lot to version 0.12.0

Summary:
~~~Added new parking-lot version named parking_lot_0_12~~~
allow-large-files

previous versions of parking-lot are incompatible with wasm compilation targets

rustwasm/wasm-bindgen#2160
Amanieu/parking_lot#302

Reviewed By: dtolnay

Differential Revision: D33985872

fbshipit-source-id: ce571ef50289fe97ff89dbf72d2c7f39fbd47758

reverie-ptrace/Cargo.toml

@@ -19,7 +19,7 @@ lazy_static = "1.0"
 libc = "0.2.98"
 nix = "0.22"
 num-traits = "0.2"
-parking_lot = { version = "0.11.2", features = ["send_guard"] }
+parking_lot = { version = "0.12.0", features = ["send_guard"] }
 paste = "1.0"
 perf-event-open-sys = "1.0"
 procfs = "0.9"