diff --git a/editors/code/src/config.ts b/editors/code/src/config.ts
index 1931cfe381..527fad944f 100644
--- a/editors/code/src/config.ts
+++ b/editors/code/src/config.ts
@@ -10,7 +10,7 @@ export type RunnableEnvCfgItem = {
     env: Record<string, string>;
     platform?: string | string[];
 };
-export type RunnableEnvCfg = undefined | Record<string, string> | RunnableEnvCfgItem[];
+export type RunnableEnvCfg = Record<string, string> | RunnableEnvCfgItem[];
 
 export class Config {
     readonly extensionId = "rust-lang.rust-analyzer";
diff --git a/editors/code/src/debug.ts b/editors/code/src/debug.ts
index c2da2ea4e3..f23e368093 100644
--- a/editors/code/src/debug.ts
+++ b/editors/code/src/debug.ts
@@ -5,7 +5,7 @@ import type * as ra from "./lsp_ext";
 
 import { Cargo, getRustcId, getSysroot } from "./toolchain";
 import type { Ctx } from "./ctx";
-import { createCargoArgs, prepareEnv } from "./run";
+import { prepareEnv } from "./run";
 import { isCargoRunnableArgs, unwrapUndefinable } from "./util";
 
 const debugOutput = vscode.window.createOutputChannel("Debug");
@@ -180,8 +180,7 @@ async function getDebugExecutable(
     env: Record<string, string>,
 ): Promise<string> {
     const cargo = new Cargo(runnableArgs.workspaceRoot || ".", debugOutput, env);
-    const args = createCargoArgs(runnableArgs);
-    const executable = await cargo.executableFromArgs(args);
+    const executable = await cargo.executableFromArgs(runnableArgs);
 
     // if we are here, there were no compilation errors.
     return executable;
diff --git a/editors/code/src/run.ts b/editors/code/src/run.ts
index 849e915cca..583f803d9a 100644
--- a/editors/code/src/run.ts
+++ b/editors/code/src/run.ts
@@ -78,7 +78,7 @@ export function prepareBaseEnv(base?: Record<string, string>): Record<string, st
 export function prepareEnv(
     label: string,
     runnableArgs: ra.CargoRunnableArgs,
-    runnableEnvCfg: RunnableEnvCfg,
+    runnableEnvCfg?: RunnableEnvCfg,
 ): Record<string, string> {
     const env = prepareBaseEnv(runnableArgs.environment);
     const platform = process.platform;
diff --git a/editors/code/src/toolchain.ts b/editors/code/src/toolchain.ts
index a48d2d90cc..6a0b5c26d8 100644
--- a/editors/code/src/toolchain.ts
+++ b/editors/code/src/toolchain.ts
@@ -4,6 +4,7 @@ import * as path from "path";
 import * as readline from "readline";
 import * as vscode from "vscode";
 import { execute, log, memoizeAsync, unwrapNullable, unwrapUndefinable } from "./util";
+import type { CargoRunnableArgs } from "./lsp_ext";
 
 interface CompilationArtifact {
     fileName: string;
@@ -25,9 +26,8 @@ export class Cargo {
     ) {}
 
     // Made public for testing purposes
-    static artifactSpec(args: readonly string[]): ArtifactSpec {
-        const cargoArgs = [...args, "--message-format=json"];
-
+    static artifactSpec(cargoArgs: string[], executableArgs?: string[]): ArtifactSpec {
+        cargoArgs = [...cargoArgs, "--message-format=json"];
         // arguments for a runnable from the quick pick should be updated.
         // see crates\rust-analyzer\src\main_loop\handlers.rs, handle_code_lens
         switch (cargoArgs[0]) {
@@ -48,6 +48,9 @@ export class Cargo {
             // produce 2 artifacts: {"kind": "bin"} and {"kind": "test"}
             result.filter = (artifacts) => artifacts.filter((it) => it.isTest);
         }
+        if (executableArgs) {
+            cargoArgs.push("--", ...executableArgs);
+        }
 
         return result;
     }
@@ -84,8 +87,10 @@ export class Cargo {
         return spec.filter?.(artifacts) ?? artifacts;
     }
 
-    async executableFromArgs(args: readonly string[]): Promise<string> {
-        const artifacts = await this.getArtifacts(Cargo.artifactSpec(args));
+    async executableFromArgs(runnableArgs: CargoRunnableArgs): Promise<string> {
+        const artifacts = await this.getArtifacts(
+            Cargo.artifactSpec(runnableArgs.cargoArgs, runnableArgs.executableArgs),
+        );
 
         if (artifacts.length === 0) {
             throw new Error("No compilation artifacts");
diff --git a/editors/code/tests/unit/runnable_env.test.ts b/editors/code/tests/unit/runnable_env.test.ts
index 1551393821..81850e03f1 100644
--- a/editors/code/tests/unit/runnable_env.test.ts
+++ b/editors/code/tests/unit/runnable_env.test.ts
@@ -16,7 +16,7 @@ function makeRunnable(label: string): ra.Runnable {
     };
 }
 
-function fakePrepareEnv(runnableName: string, config: RunnableEnvCfg): Record<string, string> {
+function fakePrepareEnv(runnableName: string, config?: RunnableEnvCfg): Record<string, string> {
     const runnable = makeRunnable(runnableName);
     const runnableArgs = runnable.args as ra.CargoRunnableArgs;
     return prepareEnv(runnable.label, runnableArgs, config);