Auto merge of #119760 - matthiaskrgr:rollup-ti2xpp7, r=matthiaskrgr

Rollup of 7 pull requests

Successful merges:

 - #117744 (Add -Zuse-sync-unwind)
 - #118649 (Make inductive cycles in coherence ambiguous always)
 - #118979 (Use `assert_unsafe_precondition` for `char::from_u32_unchecked`)
 - #119619 (mir-opt and custom target fixes)
 - #119632 (Fix broken build for ESP IDF due to #119026)
 - #119712 (Adding alignment to the cases to test for specific error messages.)
 - #119734 (Miri subtree update)

r? `@ghost`
`@rustbot` modify labels: rollup

Author: bors

.github/workflows/ci.yml

@@ -73,7 +73,7 @@ jobs:
           cargo -V
 
       - name: Test
-        run: ./ci.sh
+        run: ./ci/ci.sh
 
   style:
     name: style checks
@@ -169,7 +169,7 @@ jobs:
             --message 'Dear @*T-miri*,
 
           It would appear that the [Miri cron job build]('"https://github.com/$GITHUB_REPOSITORY/actions/runs/$GITHUB_RUN_ID"') failed.
-          
+
           This likely means that rustc changed the miri directory and
           we now need to do a [`./miri rustc-pull`](https://github.com/rust-lang/miri/blob/master/CONTRIBUTING.md#importing-changes-from-the-rustc-repo).
 

.github/workflows/sysroots.yml

@@ -0,0 +1,49 @@
+name: Tier 2 sysroots
+
+on: push
+#  schedule:
+#    - cron: '44 4 * * *' # At 4:44 UTC every day.
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  sysroots:
+    name: Build the sysroots
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Build the sysroots
+        run: |
+          cargo install -f rustup-toolchain-install-master
+          ./miri toolchain -c rust-docs # Docs are the only place targets are separated by tier
+          ./miri install
+          python3 -m pip install beautifulsoup4
+          ./ci/build-all-targets.sh
+
+  sysroots-cron-fail-notify:
+    name: sysroots cronjob failure notification
+    runs-on: ubuntu-latest
+    needs: [sysroots]
+    if: failure() || cancelled()
+    steps:
+      # Send a Zulip notification
+      - name: Install zulip-send
+        run: pip3 install zulip
+      - name: Send Zulip notification
+        env:
+          ZULIP_BOT_EMAIL: ${{ secrets.ZULIP_BOT_EMAIL }}
+          ZULIP_API_TOKEN: ${{ secrets.ZULIP_API_TOKEN }}
+        run: |
+          ~/.local/bin/zulip-send --user $ZULIP_BOT_EMAIL --api-key $ZULIP_API_TOKEN --site https://rust-lang.zulipchat.com \
+            --stream miri --subject "Cron Job Failure (miri, $(date -u +%Y-%m))" \
+            --message 'Dear @*T-miri*,
+
+          It would appear that the [Miri sysroots cron job build]('"https://github.com/$GITHUB_REPOSITORY/actions/runs/$GITHUB_RUN_ID"') failed.
+
+          Would you mind investigating this issue?
+
+          Thanks in advance!
+          Sincerely,
+          The Miri Cronjobs Bot'