Bump minimum supported Rust version (#15768)

Important crates such as `log` and `regex` have bumped theirs to 1.60.0
as well.

1 files changed, 8 insertions, 0 deletions

diff --git a/docs/upgrade.md b/docs/upgrade.md

index 49ab00c057..4cd38b1393 100644
--- a/docs/upgrade.md
+++ b/docs/upgrade.md
@@ -87,6 +87,14 @@ process, for example:
     wget https://packages.matrix.org/debian/pool/main/m/matrix-synapse-py3/matrix-synapse-py3_1.3.0+stretch1_amd64.deb
     dpkg -i matrix-synapse-py3_1.3.0+stretch1_amd64.deb
     ```
+# Upgrading to v1.86.0
+
+## Minimum supported Rust version
+
+The minimum supported Rust version has been increased from v1.58.1 to v1.60.0.
+Users building from source will need to ensure their `rustc` version is up to
+date.
+
 
 # Upgrading to v1.85.0