Trying to optimize travis speeds

Cache cargo-web only

Author: elichai

.travis.yml

@@ -1,5 +1,7 @@
 language: rust
-cache: cargo
+cache: 
+  directories:
+  - cargo_web
 
 rust:
   - stable
@@ -10,31 +12,34 @@ os:
  - linux
  - windows
 
+addons:
+  chrome: stable
+
 matrix:
-  # rand 0.6 actually needs Rust 1.22, which leads to build failures on Rust 1.14 on Windows.
-  # This is a problem, because
-  #  - we insist on rust 1.22 since #92
-  #  - but "rand" is only an optional dependency.
   exclude:
   - rust: 1.22.0
     os: windows
 
 script:
-  - cargo build --verbose --features=fuzztarget
-  - cargo build --verbose --features=rand
-  - cargo test --verbose --features=rand
-  - cargo test --verbose --features="rand serde"
-  - cargo test --verbose --features="rand serde recovery endomorphism"
   - cargo build --verbose --no-default-features
   - cargo build --verbose --no-default-features --features="serde"
+  - cargo build --verbose --no-default-features --features="lowmemory"
   - cargo build --verbose --no-default-features --features="rand"
   - cargo build --verbose --no-default-features --features="rand serde recovery endomorphism"
   - cargo build --verbose --no-default-features --features="fuzztarget recovery"
-  - cargo build --verbose --no-default-features --features="lowmemory"
+  - cargo build --verbose --features=fuzztarget
+  - cargo build --verbose --features=rand
+  - cargo test --verbose --features=rand
+  - cargo test --verbose --features="rand serde"
+  - cargo test --verbose --features="rand serde recovery endomorphism"
   - cargo build --verbose
   - cargo test --verbose
-  - cargo build --release
-  - cargo test --release
-  - cargo bench
-  - if [ "$(rustup show | grep default | grep stable)" != "" ]; then cargo doc; fi
-  - if [ "$(rustup show | grep default | grep stable)" != "" -a "$TRAVIS_OS_NAME" = "linux" ]; then cargo install --force cargo-web && cargo web build --target=asmjs-unknown-emscripten && cargo web test --target=asmjs-unknown-emscripten --nodejs; fi
+  - cargo build --verbose --release
+  - cargo test --verbose --release
+  - if [ ${TRAVIS_RUST_VERSION} == "stable" ]; then cargo doc --verbose --features="rand,serde,recovery,endomorphism"; fi
+  - if [ ${TRAVIS_RUST_VERSION} == "nightly" ]; then cargo test --verbose --benches --features=unstable; fi
+  - if [ ${TRAVIS_RUST_VERSION} == "stable" -a "$TRAVIS_OS_NAME" = "linux" ]; then 
+    CARGO_TARGET_DIR=cargo_web cargo install --verbose --force cargo-web && 
+    cargo web build --verbose --target=asmjs-unknown-emscripten && 
+    cargo web test --verbose --target=asmjs-unknown-emscripten; 
+    fi