adjustments to allow docker image to be built in 2021 edition

.drone.yml

@@ -19,14 +19,14 @@ steps:
       - "psql -U postgres -d newsletter -h postgres"
 
   - name: sqlxMigrate
-    image: rust:1.56
+    image: rust:1.57
     commands:
       - apt update && apt install -y build-essential pkg-config libssl-dev # Dependancies for sqlx
       - cargo install --version=0.5.7 sqlx-cli --no-default-features --features postgres # Install sqlx
       - sqlx migrate run
 
   - name: test
-    image: rust:1.56
+    image: rust:1.57
     commands:
       - apt update && apt install -y build-essential pkg-config libssl-dev # Dependancies for tarpaulin
       - cargo install cargo-tarpaulin

Dockerfile

@@ -1,4 +1,4 @@
-FROM lukemathwalker/cargo-chef:latest-rust-1.53.0 AS chef
+FROM lukemathwalker/cargo-chef:latest-rust-1.57.0 AS chef
 WORKDIR /app
 
 # Create lock file for project to be used in builder

sqlx-data.json

@@ -1,6 +1,6 @@
 {
   "db": "PostgreSQL",
-  "5db1f9dfcdee685b02851f144e29d3e2726127d5a1d614880a0be89d8fa6904b": {
+  "793f0df728d217c204123f12e4eafd6439db2d49d0cb506618ae9e780c7e0558": {
     "query": "\n    INSERT INTO subscriptions (id, email, name, subscribed_at)\n    VALUES ($1, $2, $3, $4)\n            ",
     "describe": {
       "columns": [],