Test all feature combos on travis, added build script.

Author: illegalprime

.travis.yml

@@ -7,7 +7,7 @@ before_script:
 
 script:
     - cargo fmt -- --write-mode=diff
-    - cargo build --features nightly
+    - ./scripts/build-all.sh
     - cargo test --features nightly
     - cargo bench --features nightly
 

scripts/build-all.sh

@@ -0,0 +1,47 @@
+#!/usr/bin/env bash
+set -euo pipefail
+SOURCE_DIR=$(readlink -f "${BASH_SOURCE[0]}")
+SOURCE_DIR=$(dirname "$SOURCE_DIR")
+cd "${SOURCE_DIR}/.."
+
+if [[ ${1:-} = "-i" ]]; then
+    INTERACTIVE=true
+fi
+
+ALL_FEATURES="
+async
+sync
+sync-ssl
+async-ssl
+async sync
+async sync-ssl
+sync async-ssl
+sync-ssl async-ssl"
+
+while read FEATS; do
+    if [[ ${INTERACTIVE:-} ]]; then
+        cargo build --no-default-features --features "$FEATS" \
+              --color always 2>&1 | less -r
+    else
+        set -x
+        cargo build --no-default-features --features "$FEATS"
+        set +x
+    fi
+done < <(echo "$ALL_FEATURES")
+
+## all combs of features (lol)
+# async
+# sync
+# sync-ssl
+# async-ssl
+# async sync
+# async sync-ssl
+# async async-ssl
+# sync sync-ssl
+# sync async-ssl
+# sync-ssl async-ssl
+# async sync sync-ssl
+# async sync async-ssl
+# async sync-ssl async-ssl
+# sync sync-ssl async-ssl
+# async sync sync-ssl async-ssl