Bump MSRV to v1.40.0 (#1152)

Author: jstarry

.travis.yml

@@ -15,7 +15,7 @@ before_cache:
   - ./ci/clear_cache.sh
 
 rust:
-  - 1.39.0 # min supported
+  - 1.40.0 # min supported
   - stable
   - beta
 
@@ -38,4 +38,3 @@ install:
 script:
   - ./ci/run_stable_checks.sh
   - GECKODRIVER=$(pwd)/geckodriver ./ci/run_tests.sh
-  - ./ci/run_emscripten_checks.sh

README.md

@@ -11,7 +11,7 @@
     <a href="https://crates.io/crates/yew"><img alt="Crate Info" src="https://img.shields.io/crates/v/yew.svg"/></a>
     <a href="https://docs.rs/yew/"><img alt="API Docs" src="https://img.shields.io/badge/docs.rs-yew-green"/></a>
     <a href="https://discord.gg/VQck8X4"><img alt="Discord Chat" src="https://img.shields.io/discord/701068342760570933"/></a>
-    <a href="https://blog.rust-lang.org/2019/11/07/Rust-1.39.0.html"><img alt="Rustc Version 1.39+" src="https://img.shields.io/badge/rustc-1.39+-lightgray.svg"/></a>
+    <a href="https://blog.rust-lang.org/2019/12/19/Rust-1.40.0.html"><img alt="Rustc Version 1.40+" src="https://img.shields.io/badge/rustc-1.40+-lightgray.svg"/></a>
   </p>
 
   <h4>

ci/run_emscripten_checks.sh

@@ -1,6 +1,4 @@
 #!/usr/bin/env bash
-echo "$(rustup default)" | grep -q "1.39.0"
-emscripten_supported=$?
 set -euxo pipefail # https://vaneyckt.io/posts/safer_bash_scripts_with_set_euxo_pipefail/
 
 (cd yew \
@@ -18,10 +16,3 @@ set -euxo pipefail # https://vaneyckt.io/posts/safer_bash_scripts_with_set_euxo_
   && cargo test --doc)
 
 (cd yew-stdweb && cargo test --target wasm32-unknown-unknown --features wasm_test)
-
-# TODO - Emscripten builds are broken on rustc > 1.39.0
-if [ "$emscripten_supported" == "0" ]; then
-  (cd yew-stdweb \
-    && cargo web test --target asmjs-unknown-emscripten \
-    && cargo web test --target wasm32-unknown-emscripten)
-fi