worker/readmes: Save the README of build metadata containing versions to escaped path too

Author: Turbo87

src/tests/http-data/krate_publish_new_krate_with_readme_and_plus_version.json

@@ -248,6 +248,89 @@
       "body": ""
     }
   },
+  {
+    "request": {
+      "uri": "http://127.0.0.1:19000/crates-test/readmes/foo_readme/foo_readme-1.0.0%2Bfoo.html",
+      "method": "PUT",
+      "headers": [
+        [
+          "accept",
+          "*/*"
+        ],
+        [
+          "accept-encoding",
+          "gzip"
+        ],
+        [
+          "content-length",
+          "0"
+        ],
+        [
+          "content-type",
+          "text/html"
+        ]
+      ],
+      "body": ""
+    },
+    "response": {
+      "status": 200,
+      "headers": [
+        [
+          "accept-ranges",
+          "bytes"
+        ],
+        [
+          "content-length",
+          "0"
+        ],
+        [
+          "content-security-policy",
+          "block-all-mixed-content"
+        ],
+        [
+          "date",
+          "Tue, 13 Jun 2023 23:04:33 GMT"
+        ],
+        [
+          "etag",
+          "\"d41d8cd98f00b204e9800998ecf8427e\""
+        ],
+        [
+          "server",
+          "MinIO"
+        ],
+        [
+          "strict-transport-security",
+          "max-age=31536000; includeSubDomains"
+        ],
+        [
+          "vary",
+          "Origin"
+        ],
+        [
+          "vary",
+          "Accept-Encoding"
+        ],
+        [
+          "x-amz-id-2",
+          "dd9025bab4ad464b049177c95eb6ebf374d3b3fd1af9251148b658df7ac2e3e8"
+        ],
+        [
+          "x-amz-request-id",
+          "17685A6A61677EBE"
+        ],
+        [
+          "x-content-type-options",
+          "nosniff"
+        ],
+        [
+          "x-xss-protection",
+          "1; mode=block"
+        ]
+      ],
+      "body": ""
+    }
+  },
   {
     "request": {
       "uri": "http://127.0.0.1:19000/crates-test/readmes/foo_readme/foo_readme-1.0.0+foo.html",

src/worker/readmes.rs

@@ -34,8 +34,19 @@ pub fn perform_render_and_upload_readme(
 
         tracing::Span::current().record("krate.name", tracing::field::display(&crate_name));
 
+        if vers.contains('+') {
+            let escaped_version = vers.replace('+', "%2B");
+            env.uploader.upload_readme(
+                env.http_client(),
+                &crate_name,
+                &escaped_version,
+                rendered.clone(),
+            )?;
+        }
+
         env.uploader
             .upload_readme(env.http_client(), &crate_name, &vers, rendered)?;
+
         Ok(())
     })
 }