diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index 20de577a1..a689d46b9 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -53,7 +53,7 @@ jobs:
 
     defaults:
       run:
-        shell: scl enable devtoolset-9 -- bash --noprofile --norc -eo pipefail {0}
+        shell: scl enable llvm-toolset-7.0 -- scl enable devtoolset-9 -- bash --noprofile --norc -eo pipefail {0}
 
     strategy:
       matrix:
diff --git a/Telegram/SourceFiles/api/api_who_read.cpp b/Telegram/SourceFiles/api/api_who_read.cpp
index 6640dcf44..49365d23b 100644
--- a/Telegram/SourceFiles/api/api_who_read.cpp
+++ b/Telegram/SourceFiles/api/api_who_read.cpp
@@ -130,7 +130,6 @@ struct State {
 		not_null<HistoryItem*> item,
 		not_null<QWidget*> context) {
 	auto weak = QPointer<QWidget>(context.get());
-	const auto fullId = item->fullId();
 	const auto session = &item->history()->session();
 	return [=](auto consumer) {
 		if (!weak) {
diff --git a/cmake b/cmake
index 03fad319f..2827dd851 160000
--- a/cmake
+++ b/cmake
@@ -1 +1 @@
-Subproject commit 03fad319f5911419e736c26f9458598a4d1e55f8
+Subproject commit 2827dd851edfca602cbb98cae6b3dbd123c4aa39