3 files changed, 28 insertions, 20 deletions

diff --git a/editors/code/src/debug.ts b/editors/code/src/debug.ts
index 1e421d407..a0c9b3ab2 100644
--- a/editors/code/src/debug.ts
+++ b/editors/code/src/debug.ts
@@ -114,8 +114,8 @@ async function getDebugConfiguration(ctx: Ctx, runnable: ra.Runnable): Promise<v
 }
 
 async function getDebugExecutable(runnable: ra.Runnable): Promise<string> {
-    const cargo = new Cargo(runnable.cwd || '.', debugOutput);
-    const executable = await cargo.executableFromArgs(runnable.args);
+    const cargo = new Cargo(runnable.args.workspaceRoot || '.', debugOutput);
+    const executable = await cargo.executableFromArgs(runnable.args.cargoArgs);
 
     // if we are here, there were no compilation errors.
     return executable;
@@ -127,8 +127,8 @@ function getLldbDebugConfig(runnable: ra.Runnable, executable: string, sourceFil
         request: "launch",
         name: runnable.label,
         program: executable,
-        args: runnable.extraArgs,
-        cwd: runnable.cwd,
+        args: runnable.args.executableArgs,
+        cwd: runnable.args.workspaceRoot,
         sourceMap: sourceFileMap,
         sourceLanguages: ["rust"]
     };
@@ -140,8 +140,8 @@ function getCppvsDebugConfig(runnable: ra.Runnable, executable: string, sourceFi
         request: "launch",
         name: runnable.label,
         program: executable,
-        args: runnable.extraArgs,
-        cwd: runnable.cwd,
+        args: runnable.args.executableArgs,
+        cwd: runnable.args.workspaceRoot,
         sourceFileMap: sourceFileMap,
     };
 }
diff --git a/editors/code/src/lsp_ext.ts b/editors/code/src/lsp_ext.ts
index 3e0b60699..73d573678 100644
--- a/editors/code/src/lsp_ext.ts
+++ b/editors/code/src/lsp_ext.ts
@@ -46,16 +46,15 @@ export interface RunnablesParams {
     position: lc.Position | null;
 }
 
-export type RunnableKind = "cargo" | "rustc" | "rustup";
-
 export interface Runnable {
-    range: lc.Range;
     label: string;
-    kind: RunnableKind;
-    args: string[];
-    extraArgs: string[];
-    env: { [key: string]: string };
-    cwd: string | null;
+    location?: lc.LocationLink;
+    kind: "cargo";
+    args: {
+        workspaceRoot?: string;
+        cargoArgs: string[];
+        executableArgs: string[];
+    };
 }
 export const runnables = new lc.RequestType<RunnablesParams, Runnable[], void>("rust-analyzer/runnables");
 
diff --git a/editors/code/src/run.ts b/editors/code/src/run.ts
index 5fc4f8e41..5c790741f 100644
--- a/editors/code/src/run.ts
+++ b/editors/code/src/run.ts
@@ -103,18 +103,27 @@ interface CargoTaskDefinition extends vscode.TaskDefinition {
     env?: { [key: string]: string };
 }
 
-export function createTask(spec: ra.Runnable): vscode.Task {
+export function createTask(runnable: ra.Runnable): vscode.Task {
     const TASK_SOURCE = 'Rust';
+
+    let command;
+    switch (runnable.kind) {
+        case "cargo": command = toolchain.getPathForExecutable("cargo");
+    }
+    const args = runnable.args.cargoArgs;
+    if (runnable.args.executableArgs.length > 0) {
+        args.push('--', ...runnable.args.executableArgs);
+    }
     const definition: CargoTaskDefinition = {
         type: 'cargo',
-        label: spec.label,
-        command: toolchain.getPathForExecutable(spec.kind),
-        args: spec.extraArgs ? [...spec.args, '--', ...spec.extraArgs] : spec.args,
-        env: Object.assign({}, process.env, spec.env),
+        label: runnable.label,
+        command,
+        args,
+        env: Object.assign({}, process.env as { [key: string]: string }, { "RUST_BACKTRACE": "short" }),
     };
 
     const execOption: vscode.ShellExecutionOptions = {
-        cwd: spec.cwd || '.',
+        cwd: runnable.args.workspaceRoot || '.',
         env: definition.env,
     };
     const exec = new vscode.ShellExecution(