Update Cargo submodule and its dependencies

Hopefully just another routine update!

So far this starts to enable the `std::arch` in stage0 builds of rustc.
This means that we may need stage0/not(stage0) in stdsimd itself, but
more and more code is starting to use `std::arch` so I think it's time
to start shifting the balance of work here.

1 files changed, 4 insertions, 2 deletions

diff --git a/src/tools/rustc-workspace-hack/Cargo.toml b/src/tools/rustc-workspace-hack/Cargo.toml
index 82c262ed565..5acfee28fad 100644
--- a/src/tools/rustc-workspace-hack/Cargo.toml
+++ b/src/tools/rustc-workspace-hack/Cargo.toml
@@ -50,9 +50,11 @@ features = [
 ]
 
 [dependencies]
-serde_json = { version = "1.0.31", features = ["raw_value"] }
-rand = { version = "0.5.5", features = ["i128_support"] }
 curl-sys = { version = "0.4.13", optional = true }
+parking_lot = { version = "0.6", features = ['nightly'] }
+rand = { version = "0.5.5", features = ["i128_support"] }
+serde_json = { version = "1.0.31", features = ["raw_value"] }
+smallvec = { version = "0.6", features = ['union'] }
 
 [target.'cfg(not(windows))'.dependencies]
 openssl = { version = "0.10.12", optional = true }