Backfill MAJOR.MINOR Rustup channel manifests with a script this time

bin/backfill-manifests.sh

@@ -0,0 +1,43 @@
+#!/bin/bash
+set -euo pipefail
+
+secrets=/data/secrets.toml
+
+declare minor_versions_with_patch_releases
+
+minor_versions_with_patch_releases[12]=1
+minor_versions_with_patch_releases[15]=1
+minor_versions_with_patch_releases[22]=1
+minor_versions_with_patch_releases[24]=1
+minor_versions_with_patch_releases[26]=2
+minor_versions_with_patch_releases[27]=2
+minor_versions_with_patch_releases[29]=2
+minor_versions_with_patch_releases[30]=1
+minor_versions_with_patch_releases[31]=1
+minor_versions_with_patch_releases[34]=2
+minor_versions_with_patch_releases[41]=1
+minor_versions_with_patch_releases[43]=1
+minor_versions_with_patch_releases[44]=1
+minor_versions_with_patch_releases[45]=2
+
+export AWS_ACCESS_KEY_ID="$(tq dist.aws-access-key-id < $secrets)"
+export AWS_SECRET_ACCESS_KEY="$(tq dist.aws-secret-key < $secrets)"
+
+bucket="$(tq dist.upload-bucket < $secrets)"
+dir="$(tq dist.upload-dir < $secrets)"
+
+for minor in {8..47}
+do
+    if [ ${minor_versions_with_patch_releases[$minor]+_} ]; then
+        last_patch=${minor_versions_with_patch_releases[$minor]};
+    else
+        last_patch=0;
+    fi
+
+    src="s3://${bucket}/${dir}/channel-rust-1.${minor}.${last_patch}.toml"
+    dst="s3://${bucket}/${dir}/channel-rust-1.${minor}.toml"
+
+    aws cp --only-show-errors "${src}" "${dst}"
+    aws cp --only-show-errors "${src}".asc "${dst}".asc
+    aws cp --only-show-errors "${src}".sha256 "${dst}".sha256
+done