Auto merge of #62209 - nikomatsakis:arbitrary_self_types-lifetime-elision-2-beta, r=Centril
Emergency backport of "arbitrary self types lifetime elision 2"
this is a backport of #61207 per the discussion in [compiler steering meeting](https://rust-lang.zulipchat.com/#narrow/stream/131828-t-compiler/topic/steering.20meeting.202019-06-28)
r? @Centril
diff --git a/src/ci/run.sh b/src/ci/run.sh
index 07e01b7..3606f54 100755
--- a/src/ci/run.sh
+++ b/src/ci/run.sh
@@ -43,7 +43,7 @@
#
# FIXME: need a scheme for changing this `nightly` value to `beta` and `stable`
# either automatically or manually.
-export RUST_RELEASE_CHANNEL=beta
+export RUST_RELEASE_CHANNEL=stable
if [ "$DEPLOY$DEPLOY_ALT" != "" ]; then
RUST_CONFIGURE_ARGS="$RUST_CONFIGURE_ARGS --release-channel=$RUST_RELEASE_CHANNEL"
RUST_CONFIGURE_ARGS="$RUST_CONFIGURE_ARGS --enable-llvm-static-stdcpp"
