rust: make evmc-client thread safety with HostContext

Refine this module make it more like geth client binding implementation.
ethereum · Jul 20, 2020 · 5b2cc1a · 5b2cc1a
1 parent f726610
commit 5b2cc1a
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diff --git a/bindings/rust/evmc-client/Cargo.toml b/bindings/rust/evmc-client/Cargo.toml
@@ -15,3 +15,4 @@ edition = "2018"
 evmc-sys = { path = "../evmc-sys", version = "7.4.0" }
 evmc-vm = { path = "../evmc-vm", version = "7.4.0" }
 libloading = "0.5"
+lazy_static = "1.4.0"