Merge #1207

1207: Update Rust version used to build docs to be consistent r=syrusakbary a=MarkMcCaskey

In response to #1196 


Co-authored-by: Mark McCaskey <mark@wasmer.io>

Makefile

@@ -307,7 +307,7 @@ dep-graph:
 	cargo deps --optional-deps --filter wasmer-wasi wasmer-wasi-tests wasmer-kernel-loader wasmer-dev-utils wasmer-llvm-backend wasmer-emscripten wasmer-emscripten-tests wasmer-runtime-core wasmer-runtime wasmer-middleware-common wasmer-middleware-common-tests wasmer-singlepass-backend wasmer-clif-backend wasmer --manifest-path Cargo.toml | dot -Tpng > wasmer_depgraph.png
 
 docs:
-	cargo doc --features=backend-singlepass,backend-cranelift,backend-llvm,docs,wasi,managed --all --document-private-items --no-deps
+	cargo doc --features=backend-singlepass,backend-cranelift,backend-llvm,docs,wasi,managed --workspace --document-private-items --no-deps
 	cd lib/runtime-c-api/ && doxygen doxyfile && cd ..
 	mkdir -p api-docs
 	mkdir -p api-docs/c

azure-pipelines.yml

@@ -235,7 +235,7 @@ jobs:
     pool:
       vmImage: "ubuntu-18.04"
     variables:
-      rust_toolchain: nightly-2019-08-15
+      rust_toolchain: nightly-2019-12-19
     condition: in(variables['Build.SourceBranch'], 'refs/heads/master', 'refs/heads/staging', 'refs/heads/trying')
     steps:
       - checkout: self