[CI] Default to Rust stable, make curl silent

Author: swallez

.ci/run-elasticsearch.sh

@@ -99,7 +99,7 @@ END
     --ulimit nofile=65536:65536 \
     --ulimit memlock=-1:-1 \
     --detach="$local_detach" \
-    --health-cmd="curl $cert_validation_flags --fail $elasticsearch_url/_cluster/health || exit 1" \
+    --health-cmd="curl $cert_validation_flags --silent --fail $elasticsearch_url/_cluster/health || exit 1" \
     --health-interval=2s \
     --health-retries=20 \
     --health-timeout=2s \

.ci/run-repository.sh

@@ -10,7 +10,7 @@ script_path=$(dirname $(realpath -s $0))
 source $script_path/functions/imports.sh
 set -euo pipefail
 
-RUST_TOOLCHAIN=${RUST_TOOLCHAIN-nightly-2020-07-27}
+RUST_TOOLCHAIN=${RUST_TOOLCHAIN-latest}
 ELASTICSEARCH_URL=${ELASTICSEARCH_URL-"$elasticsearch_url"}
 elasticsearch_container=${elasticsearch_container-}
 
@@ -40,4 +40,4 @@ docker run \
   --volume ${repo}/test_results:/usr/src/elasticsearch-rs/test_results \
   --rm \
   elastic/elasticsearch-rs \
-  /bin/bash -c "cargo make test-yaml"
+  /bin/bash -c "cargo make test-yaml"