2.7.7

Prevents wiping the bin directory, which is harmful for
self-hosted runners.

.github/workflows/buildjet.yml

@@ -16,7 +16,7 @@ jobs:
       CARGO_TERM_COLOR: always
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - run: rustup toolchain install stable --profile minimal --no-self-update
 

.github/workflows/check-dist.yml

@@ -1,26 +1,26 @@
 name: check dist/
 
 on:
-   push:
+  push:
-     branches:
+    branches:
-       - master
+      - master
-     paths-ignore:
+    paths-ignore:
-       - '**.md'
+      - "**.md"
-   pull_request:
+  pull_request:
-     paths-ignore:
+    paths-ignore:
-       - '**.md'
+      - "**.md"
-   workflow_dispatch:
+  workflow_dispatch:
 
 jobs:
   check-dist:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
-      - name: Setup Node.js 16.x
+      - name: Setup Node.js 20.x
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
-          node-version: 16.x
+          node-version: 20.x
           cache: npm
 
       - name: Install dependencies
@@ -38,7 +38,7 @@ jobs:
           fi
         id: diff
 
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         if: ${{ failure() && steps.diff.conclusion == 'failure' }}
         with:
           name: dist

.github/workflows/coverage.yml

@@ -16,7 +16,7 @@ jobs:
       CARGO_TERM_COLOR: always
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - run: rustup toolchain install stable --profile minimal --component llvm-tools-preview --no-self-update
 

.github/workflows/git-registry.yml

@@ -17,7 +17,7 @@ jobs:
       CARGO_REGISTRIES_CRATES_IO_PROTOCOL: git
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - run: rustup toolchain install stable --profile minimal --no-self-update
 

.github/workflows/install.yml

@@ -16,7 +16,7 @@ jobs:
       CARGO_TERM_COLOR: always
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - run: rustup toolchain install stable --profile minimal --no-self-update
 

.github/workflows/simple.yml

@@ -16,7 +16,7 @@ jobs:
       CARGO_TERM_COLOR: always
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - run: rustup toolchain install stable --profile minimal --no-self-update
 

.github/workflows/target-dir.yml

@@ -16,7 +16,7 @@ jobs:
       CARGO_TERM_COLOR: always
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - run: rustup toolchain install stable --profile minimal --no-self-update
 

.github/workflows/workspaces.yml

@@ -16,7 +16,7 @@ jobs:
       CARGO_TERM_COLOR: always
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - run: rustup toolchain install stable --profile minimal --target wasm32-unknown-unknown --no-self-update
 

CHANGELOG.md

@@ -1,5 +1,21 @@
 # Changelog
 
+## 2.7.3
+
+- Work around upstream problem that causes cache saving to hang for minutes.
+
+## 2.7.2
+
+- Only key by `Cargo.toml` and `Cargo.lock` files of workspace members.
+
+## 2.7.1
+
+- Update toml parser to fix parsing errors.
+
+## 2.7.0
+
+- Properly cache `trybuild` tests.
+
 ## 2.6.2
 
 - Fix `toml` parsing.

README.md

@@ -6,7 +6,7 @@ sensible defaults.
 ## Example usage
 
 ```yaml
-- uses: actions/checkout@v3
+- uses: actions/checkout@v4
 
 # selecting a toolchain either by action or manual `rustup` calls should happen
 # before the plugin, as the cache uses the current rustc version as its cache key
@@ -60,19 +60,29 @@ sensible defaults.
     # default: "false"
     cache-all-crates: ""
 
-    # Determiners whether the cache should be saved.
+    # Determines whether the cache should be saved.
     # If `false`, the cache is only restored.
     # Useful for jobs where the matrix is additive e.g. additional Cargo features,
     # or when only runs from `master` should be saved to the cache.
     # default: "true"
     save-if: ""
     # To only cache runs from `master`:
-    save-if: ${{ github.ref == 'refs/head/master' }}
+    save-if: ${{ github.ref == 'refs/heads/master' }}
+
+    # Determines whether the cache should be restored.
+    # If `true` the cache key will be checked and the `cache-hit` output will be set
+    # but the cache itself won't be restored
+    # default: "false"
+    lookup-only: ""
 
     # Specifies what to use as the backend providing cache
     # Can be set to either "github" or "buildjet"
     # default: "github"
     cache-provider: ""
+
+    # Determines whether to cache the ~/.cargo/bin directory.
+    # default: "true"
+    cache-bin: ""
 ```
 
 Further examples are available in the [.github/workflows](./.github/workflows/) directory.
@@ -169,4 +179,7 @@ to see those details as well as further details related to caching operations.
 ## Known issues
 
 - The cache cleaning process currently removes all the files from `~/.cargo/bin`
-  that were present before the action ran (for example `rustc`).
+  that were present before the action ran (for example `rustc`), by default.
+  This can be an issue on long-running self-hosted runners, where such state
+  is expected to be preserved across runs.  You can work around this by setting
+  `cache-bin: "false"`.

action.yml

@@ -40,11 +40,19 @@ inputs:
     description: "Determines which provider to use for caching. Options are github or buildjet, defaults to github."
     required: false
     default: "github"
+  cache-bin:
+    description: "Determines whether to cache ${CARGO_HOME}/bin."
+    required: false
+    default: "true"
+  lookup-only:
+    description: "Check if a cache entry exists without downloading the cache"
+    required: false
+    default: "false"
 outputs:
   cache-hit:
     description: "A boolean value that indicates an exact match was found."
 runs:
-  using: "node16"
+  using: "node20"
   main: "dist/restore/index.js"
   post: "dist/save/index.js"
   post-if: "success() || env.CACHE_ON_FAILURE == 'true'"

package.json

@@ -1,7 +1,7 @@
 {
   "private": true,
   "name": "rust-cache",
-  "version": "2.6.2",
+  "version": "2.7.7",
   "description": "A GitHub Action that implements smart caching for rust/cargo projects with sensible defaults.",
   "keywords": [
     "actions",
@@ -23,17 +23,18 @@
   "homepage": "https://github.com/Swatinem/rust-cache#readme",
   "dependencies": {
     "@actions/buildjet-cache": "npm:github-actions.cache-buildjet@0.2.0",
-    "@actions/cache": "^3.2.2",
+    "@actions/cache": "^4.0.0",
-    "@actions/core": "^1.10.0",
+    "@actions/core": "^1.11.1",
     "@actions/exec": "^1.1.1",
-    "@actions/glob": "^0.4.0",
+    "@actions/glob": "^0.5.0",
     "@actions/io": "^1.1.3",
-    "smol-toml": "^1.1.1"
+    "smol-toml": "^1.3.0"
   },
   "devDependencies": {
-    "@vercel/ncc": "^0.36.1",
+    "@types/node": "^22.7.5",
+    "@vercel/ncc": "^0.38.2",
     "linefix": "^0.1.1",
-    "typescript": "5.1.6"
+    "typescript": "5.7.2"
   },
   "scripts": {
     "prepare": "ncc build --target es2020 -o dist/restore src/restore.ts && ncc build --target es2020 -o dist/save src/save.ts && linefix dist"

src/cleanup.ts

@@ -4,6 +4,7 @@ import fs from "fs";
 import path from "path";
 
 import { CARGO_HOME } from "./config";
+import { exists } from "./utils";
 import { Packages } from "./workspace";
 
 export async function cleanTargetDir(targetDir: string, packages: Packages, checkTimestamp = false) {
@@ -34,6 +35,26 @@ export async function cleanTargetDir(targetDir: string, packages: Packages, chec
 async function cleanProfileTarget(profileDir: string, packages: Packages, checkTimestamp = false) {
   core.debug(`cleaning profile directory "${profileDir}"`);
 
+  // Quite a few testing utility crates store compilation artifacts as nested
+  // workspaces under `target/tests`. Notably, `target/tests/target` and
+  // `target/tests/trybuild`.
+  if (path.basename(profileDir) === "tests") {
+    try {
+      // https://github.com/vertexclique/kaos/blob/9876f6c890339741cc5be4b7cb9df72baa5a6d79/src/cargo.rs#L25
+      // https://github.com/eupn/macrotest/blob/c4151a5f9f545942f4971980b5d264ebcd0b1d11/src/cargo.rs#L27
+      cleanTargetDir(path.join(profileDir, "target"), packages, checkTimestamp);
+    } catch {}
+    try {
+      // https://github.com/dtolnay/trybuild/blob/eec8ca6cb9b8f53d0caf1aa499d99df52cae8b40/src/cargo.rs#L50
+      cleanTargetDir(path.join(profileDir, "trybuild"), packages, checkTimestamp);
+    } catch {}
+
+    // Delete everything else.
+    await rmExcept(profileDir, new Set(["target", "trybuild"]), checkTimestamp);
+
+    return;
+  }
+
   let keepProfile = new Set(["build", ".fingerprint", "deps"]);
   await rmExcept(profileDir, keepProfile);
 
@@ -288,12 +309,3 @@ async function rmRF(dirName: string) {
   core.debug(`deleting "${dirName}"`);
   await io.rmRF(dirName);
 }
-
-async function exists(path: string) {
-  try {
-    await fs.promises.access(path);
-    return true;
-  } catch {
-    return false;
-  }
-}

src/config.ts

@@ -8,7 +8,7 @@ import path from "path";
 import * as toml from "smol-toml";
 
 import { getCargoBins } from "./cleanup";
-import { CacheProvider, getCmdOutput } from "./utils";
+import { CacheProvider, exists, getCmdOutput } from "./utils";
 import { Workspace } from "./workspace";
 
 const HOME = os.homedir();
@@ -25,6 +25,9 @@ export class CacheConfig {
   /** The secondary (restore) key that only contains the prefix and environment */
   public restoreKey = "";
 
+  /** Whether to cache CARGO_HOME/.bin */
+  public cacheBin: boolean = true;
+
   /** The workspace configurations */
   public workspaces: Array<Workspace> = [];
 
@@ -71,6 +74,10 @@ export class CacheConfig {
       }
     }
 
+    // Add runner OS to the key to avoid cross-contamination of cache
+    const runnerOS = os.type();
+    key += `-${runnerOS}`;
+
     self.keyPrefix = key;
 
     // Construct environment portion of the key:
@@ -116,6 +123,8 @@ export class CacheConfig {
     // This considers all the files found via globbing for various manifests
     // and lockfiles.
 
+    self.cacheBin = core.getInput("cache-bin").toLowerCase() == "true";
+
     // Constructs the workspace config and paths to restore:
     // The workspaces are given using a `$workspace -> $target` syntax.
 
@@ -142,7 +151,9 @@ export class CacheConfig {
         )),
       );
 
-      const cargo_manifests = sort_and_uniq(await globFiles(`${root}/**/Cargo.toml`));
+      const workspaceMembers = await workspace.getWorkspaceMembers();
+
+      const cargo_manifests = sort_and_uniq(workspaceMembers.map((member) => path.join(member.path, "Cargo.toml")));
 
       for (const cargo_manifest of cargo_manifests) {
         try {
@@ -183,23 +194,23 @@ export class CacheConfig {
           hasher.update(JSON.stringify(parsed));
 
           parsedKeyFiles.push(cargo_manifest);
-        } catch (e) { // Fallback to caching them as regular file
+        } catch (e) {
+          // Fallback to caching them as regular file
           core.warning(`Error parsing Cargo.toml manifest, fallback to caching entire file: ${e}`);
           keyFiles.push(cargo_manifest);
         }
       }
 
-      const cargo_locks = sort_and_uniq(await globFiles(`${root}/**/Cargo.lock`));
+      const cargo_lock = path.join(workspace.root, "Cargo.lock");
-
+      if (await exists(cargo_lock)) {
-      for (const cargo_lock of cargo_locks) {
         try {
           const content = await fs_promises.readFile(cargo_lock, { encoding: "utf8" });
           const parsed = toml.parse(content);
 
-          if (parsed.version !== 3 || !("package" in parsed)) {
+          if ((parsed.version !== 3 && parsed.version !== 4) || !("package" in parsed)) {
             // Fallback to caching them as regular file since this action
             // can only handle Cargo.lock format version 3
-            core.warning('Unsupported Cargo.lock format, fallback to caching entire file');
+            core.warning("Unsupported Cargo.lock format, fallback to caching entire file");
             keyFiles.push(cargo_lock);
             continue;
           }
@@ -211,7 +222,8 @@ export class CacheConfig {
           hasher.update(JSON.stringify(packages));
 
           parsedKeyFiles.push(cargo_lock);
-        } catch (e) { // Fallback to caching them as regular file
+        } catch (e) {
+          // Fallback to caching them as regular file
           core.warning(`Error parsing Cargo.lock manifest, fallback to caching entire file: ${e}`);
           keyFiles.push(cargo_lock);
         }
@@ -233,7 +245,15 @@ export class CacheConfig {
     key += `-${lockHash}`;
     self.cacheKey = key;
 
-    self.cachePaths = [CARGO_HOME];
+    self.cachePaths = [path.join(CARGO_HOME, "registry"), path.join(CARGO_HOME, "git")];
+    if (self.cacheBin) {
+      self.cachePaths = [
+        path.join(CARGO_HOME, "bin"),
+        path.join(CARGO_HOME, ".crates.toml"),
+        path.join(CARGO_HOME, ".crates2.json"),
+        ...self.cachePaths,
+      ];
+    }
     const cacheTargets = core.getInput("cache-targets").toLowerCase() || "true";
     if (cacheTargets === "true") {
       self.cachePaths.push(...workspaces.map((ws) => ws.target));

src/restore.ts

@@ -24,6 +24,8 @@ async function run() {
     if (cacheOnFailure !== "true") {
       cacheOnFailure = "false";
     }
+    var lookupOnly = core.getInput("lookup-only").toLowerCase() === "true";
+
     core.exportVariable("CACHE_ON_FAILURE", cacheOnFailure);
     core.exportVariable("CARGO_INCREMENTAL", 0);
 
@@ -31,15 +33,17 @@ async function run() {
     config.printInfo(cacheProvider);
     core.info("");
 
-    core.info(`... Restoring cache ...`);
+    core.info(`... ${lookupOnly ? "Checking" : "Restoring"} cache ...`);
     const key = config.cacheKey;
     // Pass a copy of cachePaths to avoid mutating the original array as reported by:
     // https://github.com/actions/toolkit/pull/1378
     // TODO: remove this once the underlying bug is fixed.
-    const restoreKey = await cacheProvider.cache.restoreCache(config.cachePaths.slice(), key, [config.restoreKey]);
+    const restoreKey = await cacheProvider.cache.restoreCache(config.cachePaths.slice(), key, [config.restoreKey], {
+      lookupOnly,
+    });
     if (restoreKey) {
       const match = restoreKey === key;
-      core.info(`Restored from cache key "${restoreKey}" full match: ${match}.`);
+      core.info(`${lookupOnly ? "Found" : "Restored from"} cache key "${restoreKey}" full match: ${match}.`);
       if (!match) {
         // pre-clean the target directory on cache mismatch
         for (const workspace of config.workspaces) {
@@ -64,6 +68,7 @@ async function run() {
 
     reportError(e);
   }
+  process.exit();
 }
 
 function setCacheHitOutput(cacheHit: boolean): void {

src/save.ts

@@ -32,11 +32,13 @@ async function run() {
     core.info("");
 
     // TODO: remove this once https://github.com/actions/toolkit/pull/553 lands
-    await macOsWorkaround();
+    if (process.env["RUNNER_OS"] == "macOS") {
+      await macOsWorkaround();
+    }
 
     const allPackages = [];
     for (const workspace of config.workspaces) {
-      const packages = await workspace.getPackages();
+      const packages = await workspace.getPackagesOutsideWorkspaceRoot();
       allPackages.push(...packages);
       try {
         core.info(`... Cleaning ${workspace.target} ...`);
@@ -54,11 +56,13 @@ async function run() {
       core.debug(`${(e as any).stack}`);
     }
 
-    try {
+    if (config.cacheBin) {
-      core.info(`... Cleaning cargo/bin ...`);
+      try {
-      await cleanBin(config.cargoBins);
+        core.info(`... Cleaning cargo/bin ...`);
-    } catch (e) {
+        await cleanBin(config.cargoBins);
-      core.debug(`${(e as any).stack}`);
+      } catch (e) {
+        core.debug(`${(e as any).stack}`);
+      }
     }
 
     try {
@@ -76,6 +80,7 @@ async function run() {
   } catch (e) {
     reportError(e);
   }
+  process.exit();
 }
 
 run();

src/utils.ts

@@ -2,6 +2,7 @@ import * as core from "@actions/core";
 import * as exec from "@actions/exec";
 import * as buildjetCache from "@actions/buildjet-cache";
 import * as ghCache from "@actions/cache";
+import fs from "fs";
 
 export function reportError(e: any) {
   const { commandFailed } = e;
@@ -61,3 +62,12 @@ export function getCacheProvider(): CacheProvider {
     cache: cache,
   };
 }
+
+export async function exists(path: string) {
+  try {
+    await fs.promises.access(path);
+    return true;
+  } catch {
+    return false;
+  }
+}

src/workspace.ts

@@ -8,26 +8,33 @@ const SAVE_TARGETS = new Set(["lib", "proc-macro"]);
 export class Workspace {
   constructor(public root: string, public target: string) {}
 
-  public async getPackages(): Promise<Packages> {
+  async getPackages(filter: (p: Meta["packages"][0]) => boolean, ...extraArgs: string[]): Promise<Packages> {
     let packages: Packages = [];
     try {
       core.debug(`collecting metadata for "${this.root}"`);
       const meta: Meta = JSON.parse(
-        await getCmdOutput("cargo", ["metadata", "--all-features", "--format-version", "1"], {
+        await getCmdOutput("cargo", ["metadata", "--all-features", "--format-version", "1", ...extraArgs], {
           cwd: this.root,
         }),
       );
       core.debug(`workspace "${this.root}" has ${meta.packages.length} packages`);
-      for (const pkg of meta.packages) {
+      for (const pkg of meta.packages.filter(filter)) {
-        if (pkg.manifest_path.startsWith(this.root)) {
-          continue;
-        }
         const targets = pkg.targets.filter((t) => t.kind.some((kind) => SAVE_TARGETS.has(kind))).map((t) => t.name);
         packages.push({ name: pkg.name, version: pkg.version, targets, path: path.dirname(pkg.manifest_path) });
       }
-    } catch {}
+    } catch (err) {
+      console.error(err);
+    }
     return packages;
   }
+
+  public async getPackagesOutsideWorkspaceRoot(): Promise<Packages> {
+    return await this.getPackages((pkg) => !pkg.manifest_path.startsWith(this.root));
+  }
+
+  public async getWorkspaceMembers(): Promise<Packages> {
+    return await this.getPackages((_) => true, "--no-deps");
+  }
 }
 
 export interface PackageDefinition {

tests/Cargo.lock

@@ -14,6 +14,15 @@ version = "0.21.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "604178f6c5c21f02dc555784810edfb88d34ac2c73b2eae109655649ee73ce3d"
 
+[[package]]
+name = "basic-toml"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7bfc506e7a2370ec239e1d072507b2a80c833083699d3c6fa176fbb4de8448c6"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "bitflags"
 version = "1.3.2"
@@ -69,6 +78,12 @@ dependencies = [
  "cfg-if",
 ]
 
+[[package]]
+name = "equivalent"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5443807d6dff69373d433ab9ef5378ad8df50ca6298caf15de6e52e24aaf54d5"
+
 [[package]]
 name = "fastrand"
 version = "1.8.0"
@@ -149,10 +164,16 @@ dependencies = [
 ]
 
 [[package]]
-name = "h2"
+name = "glob"
-version = "0.3.14"
+version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5ca32592cf21ac7ccab1825cd87f6c9b3d9022c44d086172ed0966bec8af30be"
+checksum = "d2fabcfbdc87f4758337ca535fb41a6d701b65693ce38287d856d1674551ec9b"
+
+[[package]]
+name = "h2"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "51ee2dd2e4f378392eeff5d51618cd9a63166a2513846bbc55f21cfacd9199d4"
 dependencies = [
  "bytes",
  "fnv",
@@ -160,7 +181,7 @@ dependencies = [
  "futures-sink",
  "futures-util",
  "http",
- "indexmap",
+ "indexmap 2.2.6",
  "slab",
  "tokio",
  "tokio-util",
@@ -174,10 +195,16 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8a9ee70c43aaf417c914396645a0fa852624801b24ebb7ae78fe8272889ac888"
 
 [[package]]
-name = "http"
+name = "hashbrown"
-version = "0.2.8"
+version = "0.14.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "75f43d41e26995c17e71ee126451dd3941010b0514a81a9d11f3b341debc2399"
+checksum = "290f1a1d9242c78d09ce40a5e87e7554ee637af1351968159f4952f028f75604"
+
+[[package]]
+name = "http"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "21b9ddb458710bc376481b842f5da65cdf31522de232c1ca8146abce2a358258"
 dependencies = [
  "bytes",
  "fnv",
@@ -186,12 +213,24 @@ dependencies = [
 
 [[package]]
 name = "http-body"
-version = "0.4.5"
+version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d5f38f16d184e36f2408a55281cd658ecbd3ca05cce6d6510a176eca393e26d1"
+checksum = "1cac85db508abc24a2e48553ba12a996e87244a0395ce011e62b37158745d643"
 dependencies = [
  "bytes",
  "http",
+]
+
+[[package]]
+name = "http-body-util"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0475f8b2ac86659c21b64320d5d653f9efe42acd2a4e560073ec61a155a34f1d"
+dependencies = [
+ "bytes",
+ "futures-core",
+ "http",
+ "http-body",
  "pin-project-lite",
 ]
 
@@ -201,47 +240,60 @@ version = "1.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d897f394bad6a705d5f4104762e116a75639e470d80901eed05a860a95cb1904"
 
-[[package]]
-name = "httpdate"
-version = "1.0.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c4a1e36c821dbe04574f602848a19f742f4fb3c98d40449f11bcad18d6b17421"
-
 [[package]]
 name = "hyper"
-version = "0.14.20"
+version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "02c929dc5c39e335a03c405292728118860721b10190d98c2a0f0efd5baafbac"
+checksum = "186548d73ac615b32a73aafe38fb4f56c0d340e110e5a200bcadbaf2e199263a"
 dependencies = [
  "bytes",
  "futures-channel",
- "futures-core",
  "futures-util",
  "h2",
  "http",
  "http-body",
  "httparse",
- "httpdate",
  "itoa",
  "pin-project-lite",
- "socket2",
+ "smallvec",
  "tokio",
- "tower-service",
- "tracing",
  "want",
 ]
 
 [[package]]
 name = "hyper-tls"
-version = "0.5.0"
+version = "0.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d6183ddfa99b85da61a140bea0efc93fdf56ceaa041b37d553518030827f9905"
+checksum = "70206fc6890eaca9fde8a0bf71caa2ddfc9fe045ac9e5c70df101a7dbde866e0"
 dependencies = [
  "bytes",
+ "http-body-util",
  "hyper",
+ "hyper-util",
  "native-tls",
  "tokio",
  "tokio-native-tls",
+ "tower-service",
+]
+
+[[package]]
+name = "hyper-util"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ca38ef113da30126bbff9cd1705f9273e15d45498615d138b0c20279ac7a76aa"
+dependencies = [
+ "bytes",
+ "futures-channel",
+ "futures-util",
+ "http",
+ "http-body",
+ "hyper",
+ "pin-project-lite",
+ "socket2 0.5.6",
+ "tokio",
+ "tower",
+ "tower-service",
+ "tracing",
 ]
 
 [[package]]
@@ -262,7 +314,17 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "10a35a97730320ffe8e2d410b5d3b69279b98d2c14bdb8b70ea89ecf7888d41e"
 dependencies = [
  "autocfg",
- "hashbrown",
+ "hashbrown 0.12.3",
+]
+
+[[package]]
+name = "indexmap"
+version = "2.2.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "168fb715dda47215e360912c096649d23d58bf392ac62f73919e831745e40f26"
+dependencies = [
+ "equivalent",
+ "hashbrown 0.14.3",
 ]
 
 [[package]]
@@ -295,6 +357,17 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "jsonpath_lib_polars_vendor"
+version = "0.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f4bd9354947622f7471ff713eacaabdb683ccb13bba4edccaab9860abf480b7d"
+dependencies = [
+ "log",
+ "serde",
+ "serde_json",
+]
+
 [[package]]
 name = "lazy_static"
 version = "1.4.0"
@@ -309,9 +382,9 @@ checksum = "884e2677b40cc8c339eaefcb701c32ef1fd2493d71118dc0ca4b6a736c93bd67"
 
 [[package]]
 name = "libc"
-version = "0.2.132"
+version = "0.2.153"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8371e4e5341c3a96db127eb2465ac681ced4c433e01dd0e938adbef26ba93ba5"
+checksum = "9c198f91728a82281a64e1f4f9eeb25d82cb32a5de251c6bd1b5154d63a8e7bd"
 
 [[package]]
 name = "log"
@@ -349,7 +422,7 @@ dependencies = [
  "libc",
  "log",
  "wasi",
- "windows-sys",
+ "windows-sys 0.36.1",
 ]
 
 [[package]]
@@ -399,7 +472,7 @@ checksum = "b501e44f11665960c7e7fcf062c7d96a14ade4aa98116c004b2e37b5be7d736c"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.99",
 ]
 
 [[package]]
@@ -427,6 +500,26 @@ version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d4fd5641d01c8f18a23da7b6fe29298ff4b55afcccdf78973b24cf3175fee32e"
 
+[[package]]
+name = "pin-project"
+version = "1.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b6bf43b791c5b9e34c3d182969b4abb522f9343702850a2e57f460d00d09b4b3"
+dependencies = [
+ "pin-project-internal",
+]
+
+[[package]]
+name = "pin-project-internal"
+version = "1.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2f38a4412a78282e09a2cf38d195ea5420d15ba0602cb375210efbc877243965"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.55",
+]
+
 [[package]]
 name = "pin-project-lite"
 version = "0.2.9"
@@ -447,18 +540,18 @@ checksum = "1df8c4ec4b0627e53bdf214615ad287367e482558cf84b109250b37464dc03ae"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.43"
+version = "1.0.79"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0a2ca2c61bc9f3d74d2886294ab7b9853abd9c1ad903a3ac7815c58989bb7bab"
+checksum = "e835ff2298f5721608eb1a980ecaee1aef2c132bf95ecc026a11b7bf3c01c02e"
 dependencies = [
  "unicode-ident",
 ]
 
 [[package]]
 name = "quote"
-version = "1.0.21"
+version = "1.0.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bbe448f377a7d6961e30f5955f9b8d106c3f5e449d493ee1b125c1d43c2b5179"
+checksum = "291ec9ab5efd934aaf503a6466c5d5251535d108ee747472c3977cc5acc868ef"
 dependencies = [
  "proc-macro2",
 ]
@@ -483,9 +576,9 @@ dependencies = [
 
 [[package]]
 name = "reqwest"
-version = "0.11.18"
+version = "0.12.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cde824a14b7c14f85caff81225f411faacc04a2013f41670f41443742b1c1c55"
+checksum = "e333b1eb9fe677f6893a9efcb0d277a2d3edd83f358a236b657c32301dc6e5f6"
 dependencies = [
  "base64",
  "bytes",
@@ -495,8 +588,10 @@ dependencies = [
  "h2",
  "http",
  "http-body",
+ "http-body-util",
  "hyper",
  "hyper-tls",
+ "hyper-util",
  "ipnet",
  "js-sys",
  "log",
@@ -505,9 +600,12 @@ dependencies = [
  "once_cell",
  "percent-encoding",
  "pin-project-lite",
+ "rustls-pemfile",
  "serde",
  "serde_json",
  "serde_urlencoded",
+ "sync_wrapper",
+ "system-configuration",
  "tokio",
  "tokio-native-tls",
  "tower-service",
@@ -522,11 +620,22 @@ dependencies = [
 name = "rust-cache"
 version = "0.1.0"
 dependencies = [
+ "jsonpath_lib_polars_vendor",
  "reqwest",
  "tikv-jemallocator",
+ "trybuild",
  "watto",
 ]
 
+[[package]]
+name = "rustls-pemfile"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1c74cae0a4cf6ccbbf5f359f08efdf8ee7e1dc532573bf0db71968cb56b1448c"
+dependencies = [
+ "base64",
+]
+
 [[package]]
 name = "ryu"
 version = "1.0.11"
@@ -540,7 +649,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "88d6731146462ea25d9244b2ed5fd1d716d25c52e4d54aa4fb0f3c4e9854dbe2"
 dependencies = [
  "lazy_static",
- "windows-sys",
+ "windows-sys 0.36.1",
 ]
 
 [[package]]
@@ -568,9 +677,23 @@ dependencies = [
 
 [[package]]
 name = "serde"
-version = "1.0.144"
+version = "1.0.185"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0f747710de3dcd43b88c9168773254e809d8ddbdf9653b84e2554ab219f17860"
+checksum = "be9b6f69f1dfd54c3b568ffa45c310d6973a5e5148fd40cf515acaf38cf5bc31"
+dependencies = [
+ "serde_derive",
+]
+
+[[package]]
+name = "serde_derive"
+version = "1.0.185"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dc59dfdcbad1437773485e0367fea4b090a2e0a16d9ffc46af47764536a298ec"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.55",
+]
 
 [[package]]
 name = "serde_json"
@@ -578,6 +701,7 @@ version = "1.0.85"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e55a28e3aaef9d5ce0506d0a14dbba8054ddc7e499ef522dd8b26859ec9d4a44"
 dependencies = [
+ "indexmap 1.9.1",
  "itoa",
  "ryu",
  "serde",
@@ -604,6 +728,12 @@ dependencies = [
  "autocfg",
 ]
 
+[[package]]
+name = "smallvec"
+version = "1.13.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3c5e1a9a646d36c3599cd173a41282daf47c44583ad367b8e6837255952e5c67"
+
 [[package]]
 name = "socket2"
 version = "0.4.7"
@@ -614,6 +744,16 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "socket2"
+version = "0.5.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "05ffd9c0a93b7543e062e759284fcf5f5e3b098501104bfbdde4d404db792871"
+dependencies = [
+ "libc",
+ "windows-sys 0.52.0",
+]
+
 [[package]]
 name = "syn"
 version = "1.0.99"
@@ -625,6 +765,44 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "syn"
+version = "2.0.55"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "002a1b3dbf967edfafc32655d0f377ab0bb7b994aa1d32c8cc7e9b8bf3ebb8f0"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
+[[package]]
+name = "sync_wrapper"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2047c6ded9c721764247e62cd3b03c09ffc529b2ba5b10ec482ae507a4a70160"
+
+[[package]]
+name = "system-configuration"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ba3a3adc5c275d719af8cb4272ea1c4a6d668a777f37e115f6d11ddbc1c8e0e7"
+dependencies = [
+ "bitflags",
+ "core-foundation",
+ "system-configuration-sys",
+]
+
+[[package]]
+name = "system-configuration-sys"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a75fb188eb626b924683e3b95e3a48e63551fcfb51949de2f06a9d91dbee93c9"
+dependencies = [
+ "core-foundation-sys",
+ "libc",
+]
+
 [[package]]
 name = "tempfile"
 version = "3.3.0"
@@ -639,6 +817,15 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "termcolor"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "be55cf8942feac5c765c2c993422806843c9a9a45d4d5c407ad6dd2ea95eb9b6"
+dependencies = [
+ "winapi-util",
+]
+
 [[package]]
 name = "thiserror"
 version = "1.0.33"
@@ -656,7 +843,7 @@ checksum = "c251e90f708e16c49a16f4917dc2131e75222b72edfa9cb7f7c58ae56aae0c09"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.99",
 ]
 
 [[package]]
@@ -707,7 +894,7 @@ dependencies = [
  "mio",
  "once_cell",
  "pin-project-lite",
- "socket2",
+ "socket2 0.4.7",
  "winapi",
 ]
 
@@ -735,6 +922,28 @@ dependencies = [
  "tracing",
 ]
 
+[[package]]
+name = "tower"
+version = "0.4.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b8fa9be0de6cf49e536ce1851f987bd21a43b771b09473c3549a6c853db37c1c"
+dependencies = [
+ "futures-core",
+ "futures-util",
+ "pin-project",
+ "pin-project-lite",
+ "tokio",
+ "tower-layer",
+ "tower-service",
+ "tracing",
+]
+
+[[package]]
+name = "tower-layer"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c20c8dbed6283a09604c3e69b4b7eeb54e298b8a600d4d5ecb5ad39de609f1d0"
+
 [[package]]
 name = "tower-service"
 version = "0.3.2"
@@ -748,6 +957,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2fce9567bd60a67d08a16488756721ba392f24f29006402881e43b19aac64307"
 dependencies = [
  "cfg-if",
+ "log",
  "pin-project-lite",
  "tracing-core",
 ]
@@ -767,6 +977,21 @@ version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "59547bce71d9c38b83d9c0e92b6066c4253371f15005def0c30d9657f50c7642"
 
+[[package]]
+name = "trybuild"
+version = "1.0.80"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "501dbdbb99861e4ab6b60eb6a7493956a9defb644fd034bc4a5ef27c693c8a3a"
+dependencies = [
+ "basic-toml",
+ "glob",
+ "once_cell",
+ "serde",
+ "serde_derive",
+ "serde_json",
+ "termcolor",
+]
+
 [[package]]
 name = "unicode-bidi"
 version = "0.3.8"
@@ -843,7 +1068,7 @@ dependencies = [
  "once_cell",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.99",
  "wasm-bindgen-shared",
 ]
 
@@ -877,7 +1102,7 @@ checksum = "5be8e654bdd9b79216c2929ab90721aa82faf65c48cdf08bdc4e7f51357b80da"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.99",
  "wasm-bindgen-backend",
  "wasm-bindgen-shared",
 ]
@@ -923,6 +1148,15 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
 
+[[package]]
+name = "winapi-util"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178"
+dependencies = [
+ "winapi",
+]
+
 [[package]]
 name = "winapi-x86_64-pc-windows-gnu"
 version = "0.4.0"
@@ -935,37 +1169,157 @@ version = "0.36.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ea04155a16a59f9eab786fe12a4a450e75cdb175f9e0d80da1e17db09f55b8d2"
 dependencies = [
- "windows_aarch64_msvc",
+ "windows_aarch64_msvc 0.36.1",
- "windows_i686_gnu",
+ "windows_i686_gnu 0.36.1",
- "windows_i686_msvc",
+ "windows_i686_msvc 0.36.1",
- "windows_x86_64_gnu",
+ "windows_x86_64_gnu 0.36.1",
- "windows_x86_64_msvc",
+ "windows_x86_64_msvc 0.36.1",
 ]
 
+[[package]]
+name = "windows-sys"
+version = "0.48.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "677d2418bec65e3338edb076e806bc1ec15693c5d0104683f2efe857f61056a9"
+dependencies = [
+ "windows-targets 0.48.5",
+]
+
+[[package]]
+name = "windows-sys"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "282be5f36a8ce781fad8c8ae18fa3f9beff57ec1b52cb3de0789201425d9a33d"
+dependencies = [
+ "windows-targets 0.52.4",
+]
+
+[[package]]
+name = "windows-targets"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9a2fa6e2155d7247be68c096456083145c183cbbbc2764150dda45a87197940c"
+dependencies = [
+ "windows_aarch64_gnullvm 0.48.5",
+ "windows_aarch64_msvc 0.48.5",
+ "windows_i686_gnu 0.48.5",
+ "windows_i686_msvc 0.48.5",
+ "windows_x86_64_gnu 0.48.5",
+ "windows_x86_64_gnullvm 0.48.5",
+ "windows_x86_64_msvc 0.48.5",
+]
+
+[[package]]
+name = "windows-targets"
+version = "0.52.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7dd37b7e5ab9018759f893a1952c9420d060016fc19a472b4bb20d1bdd694d1b"
+dependencies = [
+ "windows_aarch64_gnullvm 0.52.4",
+ "windows_aarch64_msvc 0.52.4",
+ "windows_i686_gnu 0.52.4",
+ "windows_i686_msvc 0.52.4",
+ "windows_x86_64_gnu 0.52.4",
+ "windows_x86_64_gnullvm 0.52.4",
+ "windows_x86_64_msvc 0.52.4",
+]
+
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2b38e32f0abccf9987a4e3079dfb67dcd799fb61361e53e2882c3cbaf0d905d8"
+
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.52.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bcf46cf4c365c6f2d1cc93ce535f2c8b244591df96ceee75d8e83deb70a9cac9"
+
 [[package]]
 name = "windows_aarch64_msvc"
 version = "0.36.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9bb8c3fd39ade2d67e9874ac4f3db21f0d710bee00fe7cab16949ec184eeaa47"
 
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dc35310971f3b2dbbf3f0690a219f40e2d9afcf64f9ab7cc1be722937c26b4bc"
+
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.52.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "da9f259dd3bcf6990b55bffd094c4f7235817ba4ceebde8e6d11cd0c5633b675"
+
 [[package]]
 name = "windows_i686_gnu"
 version = "0.36.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "180e6ccf01daf4c426b846dfc66db1fc518f074baa793aa7d9b9aaeffad6a3b6"
 
+[[package]]
+name = "windows_i686_gnu"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a75915e7def60c94dcef72200b9a8e58e5091744960da64ec734a6c6e9b3743e"
+
+[[package]]
+name = "windows_i686_gnu"
+version = "0.52.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b474d8268f99e0995f25b9f095bc7434632601028cf86590aea5c8a5cb7801d3"
+
 [[package]]
 name = "windows_i686_msvc"
 version = "0.36.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e2e7917148b2812d1eeafaeb22a97e4813dfa60a3f8f78ebe204bcc88f12f024"
 
+[[package]]
+name = "windows_i686_msvc"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f55c233f70c4b27f66c523580f78f1004e8b5a8b659e05a4eb49d4166cca406"
+
+[[package]]
+name = "windows_i686_msvc"
+version = "0.52.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1515e9a29e5bed743cb4415a9ecf5dfca648ce85ee42e15873c3cd8610ff8e02"
+
 [[package]]
 name = "windows_x86_64_gnu"
 version = "0.36.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4dcd171b8776c41b97521e5da127a2d86ad280114807d0b2ab1e462bc764d9e1"
 
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "53d40abd2583d23e4718fddf1ebec84dbff8381c07cae67ff7768bbf19c6718e"
+
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.52.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5eee091590e89cc02ad514ffe3ead9eb6b660aedca2183455434b93546371a03"
+
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0b7b52767868a23d5bab768e390dc5f5c55825b6d30b86c844ff2dc7414044cc"
+
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.52.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "77ca79f2451b49fa9e2af39f0747fe999fcda4f5e241b2898624dca97a1f2177"
+
 [[package]]
 name = "windows_x86_64_msvc"
 version = "0.36.1"
@@ -973,10 +1327,23 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c811ca4a8c853ef420abd8592ba53ddbbac90410fab6903b3e79972a631f7680"
 
 [[package]]
-name = "winreg"
+name = "windows_x86_64_msvc"
-version = "0.10.1"
+version = "0.48.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "80d0f4e272c85def139476380b12f9ac60926689dd2e01d4923222f40580869d"
+checksum = "ed94fce61571a4006852b7389a063ab983c02eb1bb37b47f8272ce92d06d9538"
+
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.52.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "32b752e52a2da0ddfbdbcc6fceadfeede4c939ed16d13e648833a61dfb611ed8"
+
+[[package]]
+name = "winreg"
+version = "0.50.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "524e57b2c537c0f9b1e69f1965311ec12182b4122e45035b1508cd24d2adadb1"
 dependencies = [
- "winapi",
+ "cfg-if",
+ "windows-sys 0.48.0",
 ]

tests/Cargo.toml

@@ -6,8 +6,12 @@ authors = ["Arpad Borsos <arpad.borsos@googlemail.com>"]
 edition = "2021"
 
 [dependencies]
-reqwest = "0.11.18"
+reqwest = "0.12.1"
+jsonpath_lib_polars_vendor = "0.0.1"
 watto = { git = "https://github.com/getsentry/watto", rev = "d71c8218506bddba102a124a460d64da25e303dc", features = ["strings"] }
 
+[dev-dependencies]
+trybuild = "1"
+
 [target.'cfg(not(target_env = "msvc"))'.dependencies]
 tikv-jemallocator = "0.5.4"

tests/tests/trybuild.rs

@@ -0,0 +1,6 @@
+#[test]
+fn test_trybuild() {
+    let t = trybuild::TestCases::new();
+    t.pass("tests/trybuild/empty_main.rs");
+    t.compile_fail("tests/trybuild/fail_to_compile.rs");
+}

tests/tests/trybuild/empty_main.rs

@@ -0,0 +1 @@
+fn main() {}

tests/tests/trybuild/fail_to_compile.rs

@@ -0,0 +1,3 @@
+fn main() {
+    "foobar".foobar();
+}

tests/tests/trybuild/fail_to_compile.stderr

@@ -0,0 +1,5 @@
+error[E0599]: no method named `foobar` found for reference `&'static str` in the current scope
+ --> tests/trybuild/fail_to_compile.rs:2:14
+  |
+2 |     "foobar".foobar();
+  |              ^^^^^^ method not found in `&str`