Update toolchain in all our files

We need to do more than just update rust-toolchain sadly.

.github/workflows/ci.yml

@@ -18,7 +18,7 @@ jobs:
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: 1.45.0
+          toolchain: 1.49.0
           override: true
       - run: rustup component add rustfmt
       - uses: actions-rs/cargo@v1
@@ -32,7 +32,7 @@ jobs:
       - uses: actions/checkout@v1
       - uses: actions-rs/toolchain@v1
         with:
-            toolchain: 1.45.0
+            toolchain: 1.49.0
             components: clippy
             override: true
       - uses: actions-rs/clippy-check@v1
@@ -50,7 +50,7 @@ jobs:
         # macOS disabled due to random failures related to caching
         #os: [ubuntu-latest, windows-latest, macOS-latest]
         os: [ubuntu-latest, windows-latest]
-        rust: [1.45.0]
+        rust: [1.49.0]
         experimental: [false]
 #        include:
 #          - os: ubuntu-latest

ci_scripts/docker-coredeps/deps/build_rust.sh

@@ -3,9 +3,9 @@
 set -e -x
 
 # Install Rust
-curl https://sh.rustup.rs -sSf | sh -s -- --default-toolchain 1.45.0-x86_64-unknown-linux-gnu -y
+curl https://sh.rustup.rs -sSf | sh -s -- --default-toolchain 1.49.0-x86_64-unknown-linux-gnu -y
 export PATH=/root/.cargo/bin:$PATH
 rustc --version
 
 # remove some 300-400 MB that we don't need for automated builds
-rm -rf /root/.rustup/toolchains/1.45.0-x86_64-unknown-linux-gnu/share
+rm -rf /root/.rustup/toolchains/1.49.0-x86_64-unknown-linux-gnu/share