CI: start the proxy before the build so it's ready

It takes a bit for the propxy to get ready to accept connections, so
start it before the build so we can be reasonably sure that it's going
to be ready in time.

appveyor.yml

@@ -34,12 +34,12 @@ build_script:
 test_script:
 - ps: |
     $ErrorActionPreference="Stop"
+    # Run this early so we know it's ready by the time we need it
+    Start-Job { java -jar $Env:APPVEYOR_BUILD_FOLDER\build\poxyproxy.jar -d --port 8080 --credentials foo:bar }
     ctest -V -R libgit2_clar
     $env:GITTEST_REMOTE_URL="https://github.com/libgit2/non-existent"
     $env:GITTEST_REMOTE_USER="libgit2test"
     ctest -V -R libgit2_clar-cred_callback
-    Start-Job { java -jar $Env:APPVEYOR_BUILD_FOLDER\build\poxyproxy.jar -d --port 8080 --credentials foo:bar }
-    ctest -V .
     $env:GITTEST_REMOTE_PROXY_URL = "http://foo:bar@localhost:8080"
     .\Debug\libgit2_clar.exe -sonline::clone::proxy_credentials_in_url
     $env:GITTEST_REMOTE_PROXY_URL = "http://localhost:8080"

script/cibuild.sh

@@ -6,6 +6,11 @@ then
 	exit $?;
 fi
 
+# Should we ask Travis to cache this file?
+curl -L https://github.com/ethomson/poxyproxy/releases/download/v0.1.0/poxyproxy-0.1.0.jar >poxyproxy.jar || exit $?
+# Run this early so we know it's ready by the time we need it
+java -jar poxyproxy.jar -d --port 8080 --credentials foo:bar &
+
 mkdir _build
 cd _build
 # shellcheck disable=SC2086
@@ -50,24 +55,20 @@ export GITTEST_REMOTE_SSH_PUBKEY="$HOME/.ssh/id_rsa.pub"
 export GITTEST_REMOTE_SSH_PASSPHRASE=""
 
 
-# Can we ask Travis to cache this file?
-curl -L https://github.com/ethomson/poxyproxy/releases/download/v0.1.0/poxyproxy-0.1.0.jar >poxyproxy.jar || exit $?
-
 if [ -e ./libgit2_clar ]; then
     ./libgit2_clar -sonline::push -sonline::clone::ssh_cert &&
     ./libgit2_clar -sonline::clone::ssh_with_paths || exit $?
     if [ "$TRAVIS_OS_NAME" = "linux" ]; then
         ./libgit2_clar -sonline::clone::cred_callback || exit $?
     fi
 
-    java -jar poxyproxy.jar -d --port 8080 --credentials foo:bar &
-
+    # Use the proxy we started at the beginning
     export GITTEST_REMOTE_PROXY_URL="http://foo:bar@localhost:8080/"
-    ./libgit2_clar -sonline::clone::proxy_credentials_in_url
+    ./libgit2_clar -sonline::clone::proxy_credentials_in_url || exit $?
     export GITTEST_REMOTE_PROXY_URL="http://localhost:8080/"
     export GITTEST_REMOTE_PROXY_USER="foo"
     export GITTEST_REMOTE_PROXY_PASS="bar"
-    ./libgit2_clar -sonline::clone::proxy_credentials_request
+    ./libgit2_clar -sonline::clone::proxy_credentials_request || exit $?
 
 fi