Retry on checksum fail

cargo-binstall/cargo-binstall

@@ -12,8 +12,6 @@ CHECKSUMS = {
   "x86_64-unknown-linux-musl" => "d9f9876d9cc053827edb760775b9bacd091df70117c4d7f74b24f8f8749aa2b2",
   "x86_64-pc-windows-msvc" => "96f8325693ed00ccb96c7ae0d1da83e9c1c644d33d87175d4d4594f71246f283",
   "aarch64-apple-darwin" => "1cbc0ab3c12c3699379fb7f4640d194f71d4db2534d27b5c6849781920279721"
-}
-
 def infer_vendor
   case RbConfig::CONFIG["host_os"]
   when /linux/i
@@ -52,7 +50,7 @@ def tmpdir
   @tmpdir ||= Dir.tmpdir
 end
 
-def download_and_save(triple)
+def download_and_save(triple, attempts = 3)
   checksum = CHECKSUMS.fetch(triple)
   ext = triple.include?("linux") ? "tgz" : "zip"
   url = "https://github.com/cargo-bins/cargo-binstall/releases/download/v#{CARGO_BINSTALL_VERSION}/cargo-binstall-#{triple}.#{ext}"
@@ -88,6 +86,14 @@ def download_and_save(triple)
   ret = outfile
   File.chmod(0o755, ret)
   ret
+rescue => e
+  if attempts > 0
+    warn("Error when downloading: #{e.message}, retrying in 3 seconds...")
+    sleep(3)
+    download_and_save(triple, attempts - 1)
+  else
+    raise
+  end
 end
 
 def install_cargo_binstall