Make travis.sh and Makefile "nicer"

Slightly easier to reason about the code via some code movement, printing some
banners to make it more obvious when cargo is being run since it is run so many
times.

Makefile

@@ -1,6 +1,8 @@
 # this Makefile is mostly for the packaging convenience.
 # casual users should use `cargo` to retrieve the appropriate version of Chrono.
 
+CHANNEL=stable
+
 .PHONY: all
 all:
 	@echo 'Try `cargo build` instead.'
@@ -20,11 +22,8 @@ README.md: src/lib.rs
 
 .PHONY: test
 test:
-	TZ=UTC0 cargo test --features 'serde rustc-serialize bincode' --lib
-	TZ=ACST-9:30 cargo test --features 'serde rustc-serialize bincode' --lib
-	TZ=EST4 cargo test --features 'serde rustc-serialize bincode'
+	CHANNEL=$(CHANNEL) ./ci/travis.sh
 
 .PHONY: doc
 doc: authors readme
 	cargo doc --features 'serde rustc-serialize bincode'
-

ci/travis.sh

@@ -7,37 +7,81 @@ set -e
 
 DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 
+
+main() {
+    if [[ -n $CHANNEL ]] ; then
+        if [[ $CHANNEL == 1.13.0 ]]; then
+            banner "Building $CHANNEL"
+            build_only
+        else
+            banner "Building/testing $CHANNEL"
+            #build_and_test
+            banner "Testing Core $CHANNEL"
+            build_core_test
+        fi
+    else
+        CHANNEL=nightly
+        matching_banner "Test $CHANNEL"
+        if [ "x${CLIPPY}" = xy ] ; then
+            run_clippy
+        else
+            build_and_test
+        fi
+
+        CHANNEL=beta
+        matching_banner "Test $CHANNEL"
+        build_and_test
+
+        CHANNEL=stable
+        matching_banner "Test $CHANNEL"
+        build_and_test
+        build_core_test
+
+        CHANNEL=1.13.0
+        matching_banner "Test $CHANNEL"
+        build_only
+    fi
+}
+
 channel() {
     channel_run cargo "$@"
 }
 
 channel_run() {
-    if [ -n "${TRAVIS}" ]; then
-        if [ "${TRAVIS_RUST_VERSION}" = "${CHANNEL}" ]; then
-            pwd
-            echo "$ $*"
-            "$@"
-        fi
-    elif [ -n "${APPVEYOR}" ]; then
-        if [ "${APPVEYOR_RUST_CHANNEL}" = "${CHANNEL}" ]; then
-            pwd
-            echo "$ $*"
-            "$@"
-        fi
+    if channel_matches ; then
+        pwd
+        local the_cmd="$ $*"
+        echo "$the_cmd"
+        "$@"
     else
         pwd
         local cmd="$1"
         shift
-        if [[ $cmd = cargo ]] ; then
-            echo "$ $cmd +${CHANNEL} $*"
+        if [[ $cmd == cargo || $cmd == rustc ]] ; then
+            underline "$ $cmd +${CHANNEL} $*"
             "$cmd" "+${CHANNEL}" "$@"
+
         else
-            echo "$ $cmd $*"
+            underline "$ $cmd $*"
             "$cmd" "$@"
         fi
     fi
 }
 
+channel_matches() {
+    if [ -n "${TRAVIS}" ]; then
+        if [ "${TRAVIS_RUST_VERSION}" = "${CHANNEL}" ]; then
+            return 0
+        fi
+    elif [ -n "${APPVEYOR}" ]; then
+        if [ "${APPVEYOR_RUST_CHANNEL}" = "${CHANNEL}" ]; then
+            return 0
+        fi
+    else
+        return 1
+    fi
+}
+
 build_and_test() {
   # interleave building and testing in hope that it saves time
   # also vary the local time zone to (hopefully) catch tz-dependent bugs
@@ -76,6 +120,9 @@ build_and_test_nonwasm() {
   TZ=UTC0 channel test -v --no-default-features --features serde --lib
   channel build -v --no-default-features --features std,serde,rustc-serialize
   TZ=Asia/Katmandu channel test -v --no-default-features --features std,serde,rustc-serialize --lib
+
+  channel build -v --no-default-features --features 'alloc serde'
+  TZ=UTC0 channel test -v --no-default-features --features 'alloc serde' --lib
 }
 
 build_and_test_wasm() {
@@ -95,15 +142,16 @@ build_only() {
   cargo clean
   channel build -v
   channel build -v --features rustc-serialize
-  channel build -v --features 'serde bincode'
+  channel build -v --features serde
   channel build -v --no-default-features --features std
+  channel build -v --no-default-features --features 'std serde_std'
 }
 
 build_core_test() {
     channel_run rustup target add thumbv6m-none-eabi --toolchain "$CHANNEL"
     (
         cd ci/core-test
-        channel build -v --target thumbv6m-none-eabi
+        channel build -v --features alloc --target thumbv6m-none-eabi
     )
 }
 
@@ -114,7 +162,7 @@ run_clippy() {
         exit
     fi
 
-    cargo clippy --features 'serde bincode rustc-serialize' -- -Dclippy
+    cargo clippy --features 'serde rustc-serialize' -- -Dclippy
 }
 
 check_readme() {
@@ -122,23 +170,25 @@ check_readme() {
     (set -x; git diff --exit-code -- README.md) ; echo $?
 }
 
-rustc --version
-cargo --version
+banner() {
+    echo "======================================================================"
+    echo "$*"
+    echo "======================================================================"
+}
+
+underline() {
+    echo "$*"
+    echo "${*//?/^}"
+}
+
+matching_banner() {
+    if channel_matches || [[ -z $TRAVIS && -z $APPVEYOR ]] ; then
+        banner "$*"
+    fi
+}
+
+channel_run rustc --version
+channel_run cargo --version
 node --version
 
-CHANNEL=nightly
-if [ "x${CLIPPY}" = xy ] ; then
-    run_clippy
-else
-    build_and_test
-fi
-
-CHANNEL=beta
-build_and_test
-
-CHANNEL=stable
-build_and_test
-build_core_test
-
-CHANNEL=1.13.0
-build_only
+main