Fix 2 common Travis failures which happen when Travis has network issues

.gitignore

@@ -83,6 +83,7 @@ libconftest.dylib*
 Makefile
 dash-qt
 Dash-Qt.app
+!/depends/Makefile
 
 # Unit-tests
 Makefile.test

.travis.yml

@@ -8,19 +8,10 @@ dist: trusty
 os: linux
 language: generic
 
-addons:
-  apt:
-    packages:
-      # Use more recent docker version
-      - docker-ce
-      # Can be removed if Travis ever upgrades to Bionic
-      - realpath
-
 services:
   - docker
 
 cache:
-  apt: true
   ccache: true
   directories:
     - $HOME/cache
@@ -122,6 +113,10 @@ before_cache:
   # Save builder image
   - docker save dash-builder-$BUILD_TARGET-$TRAVIS_JOB_NUMBER $(docker history -q dash-builder-$BUILD_TARGET-$TRAVIS_JOB_NUMBER | grep -v \<missing\>) | gzip -2 > $HOME/cache/docker/dash-builder-$BUILD_TARGET.tar.gz
 
+before_install:
+  - travis_retry travis_apt_get_update
+  - travis_retry sudo apt-get -yq --no-install-suggests --no-install-recommends install docker-ce realpath
+
 install:
     # Our scripts try to be Travis agnostic
     - export PULL_REQUEST="$TRAVIS_PULL_REQUEST"

depends/Makefile

@@ -14,7 +14,6 @@ PATCHES_PATH = $(BASEDIR)/patches
 BASEDIR = $(CURDIR)
 HASH_LENGTH:=11
 DOWNLOAD_CONNECT_TIMEOUT:=10
-DOWNLOAD_RETRIES:=3
 HOST_ID_SALT ?= salt
 BUILD_ID_SALT ?= salt
 

depends/builders/darwin.mk

@@ -7,7 +7,7 @@ build_darwin_OTOOL: = $(shell xcrun -f otool)
 build_darwin_NM: = $(shell xcrun -f nm)
 build_darwin_INSTALL_NAME_TOOL:=$(shell xcrun -f install_name_tool)
 build_darwin_SHA256SUM = shasum -a 256
-build_darwin_DOWNLOAD = curl --location --fail --connect-timeout $(DOWNLOAD_CONNECT_TIMEOUT) --retry $(DOWNLOAD_RETRIES) -o
+build_darwin_DOWNLOAD = curl --location --fail --connect-timeout $(DOWNLOAD_CONNECT_TIMEOUT) -o
 
 #darwin host on darwin builder. overrides darwin host preferences.
 darwin_CC=$(shell xcrun -f clang) -mmacosx-version-min=$(OSX_MIN_VERSION)

depends/builders/linux.mk

@@ -1,2 +1,2 @@
 build_linux_SHA256SUM = sha256sum
-build_linux_DOWNLOAD = curl --location --fail --connect-timeout $(DOWNLOAD_CONNECT_TIMEOUT) --retry $(DOWNLOAD_RETRIES) -o
+build_linux_DOWNLOAD = curl --location --fail --connect-timeout $(DOWNLOAD_CONNECT_TIMEOUT) -o

depends/funcs.mk

@@ -31,6 +31,8 @@ endef
 define fetch_file
     ( test -f $$($(1)_source_dir)/$(4) || \
     ( $(call fetch_file_inner,$(1),$(2),$(3),$(4),$(5)) || \
+      (sleep 5 && $(call fetch_file_inner,$(1),$(2),$(3),$(4),$(5))) || \
+      (sleep 10 && $(call fetch_file_inner,$(1),$(2),$(3),$(4),$(5))) || \
       $(call fetch_file_inner,$(1),$(FALLBACK_DOWNLOAD_PATH),$(3),$(4),$(5))))
 endef