diff --git a/src/cli/cli.ts b/src/cli/cli.ts
index 2476e1f35c..95e9b37e72 100755
--- a/src/cli/cli.ts
+++ b/src/cli/cli.ts
@@ -39,7 +39,7 @@ program
 
 commandWithOpenOptions('open [url]', 'open page in browser specified via -b, --browser', [])
     .action(function(url, command) {
-      open(command, url, language());
+      open(command, url, language()).catch(logErrorAndExit);
     })
     .on('--help', function() {
       console.log('');
@@ -54,7 +54,7 @@ commandWithOpenOptions('codegen [url]', 'open page and generate code for user ac
       ['-o, --output <file name>', 'saves the generated script to a file'],
       ['--target <language>', `language to use, one of javascript, python, python-async, csharp`, language()],
     ]).action(function(url, command) {
-  codegen(command, url, command.target, command.output);
+  codegen(command, url, command.target, command.output).catch(logErrorAndExit);
 }).on('--help', function() {
   console.log('');
   console.log('Examples:');
@@ -122,7 +122,7 @@ const browsers = [
 for (const {alias, name, type} of browsers) {
   commandWithOpenOptions(`${alias} [url]`, `open page in ${name}`, [])
       .action(function(url, command) {
-        open({ ...command, browser: type }, url, command.target);
+        open({ ...command, browser: type }, url, command.target).catch(logErrorAndExit);
       }).on('--help', function() {
         console.log('');
         console.log('Examples:');
@@ -137,7 +137,7 @@ commandWithOpenOptions('screenshot <url> <filename>', 'capture a page screenshot
       ['--wait-for-timeout <timeout>', 'wait for timeout in milliseconds before taking a screenshot'],
       ['--full-page', 'whether to take a full page screenshot (entire scrollable area)'],
     ]).action(function(url, filename, command) {
-  screenshot(command, command, url, filename);
+  screenshot(command, command, url, filename).catch(logErrorAndExit);
 }).on('--help', function() {
   console.log('');
   console.log('Examples:');
@@ -150,7 +150,7 @@ commandWithOpenOptions('pdf <url> <filename>', 'save page as pdf',
       ['--wait-for-selector <selector>', 'wait for given selector before saving as pdf'],
       ['--wait-for-timeout <timeout>', 'wait for given timeout in milliseconds before saving as pdf'],
     ]).action(function(url, filename, command) {
-  pdf(command, command, url, filename);
+  pdf(command, command, url, filename).catch(logErrorAndExit);
 }).on('--help', function() {
   console.log('');
   console.log('Examples:');
@@ -164,7 +164,7 @@ if (process.env.PWTRACE) {
       .option('--resources <dir>', 'load resources from shared folder')
       .description('Show trace viewer')
       .action(function(trace, command) {
-        showTraceViewer(trace, command.resources);
+        showTraceViewer(trace, command.resources).catch(logErrorAndExit);
       }).on('--help', function() {
         console.log('');
         console.log('Examples:');
@@ -179,7 +179,7 @@ if (process.argv[2] === 'run-driver')
 else if (process.argv[2] === 'print-api-json')
   printApiJson();
 else if (process.argv[2] === 'launch-server')
-  launchBrowserServer(process.argv[3], process.argv[4]);
+  launchBrowserServer(process.argv[3], process.argv[4]).catch(logErrorAndExit);
 else
   program.parse(process.argv);
 
@@ -446,6 +446,11 @@ function validateOptions(options: Options) {
   }
 }
 
+function logErrorAndExit(e: Error) {
+  console.error(e);
+  process.exit(1);
+}
+
 function language(): string {
   return process.env.PW_CLI_TARGET_LANG || 'javascript';
 }
diff --git a/src/client/browserContext.ts b/src/client/browserContext.ts
index 3eb7ad96b5..e849f39182 100644
--- a/src/client/browserContext.ts
+++ b/src/client/browserContext.ts
@@ -87,7 +87,7 @@ export class BrowserContext extends ChannelOwner<channels.BrowserContextChannel,
     const func = this._bindings.get(bindingCall._initializer.name);
     if (!func)
       return;
-    bindingCall.call(func);
+    await bindingCall.call(func);
   }
 
   setDefaultNavigationTimeout(timeout: number) {
@@ -238,7 +238,7 @@ export class BrowserContext extends ChannelOwner<channels.BrowserContextChannel,
     });
   }
 
-  async _onClose() {
+  _onClose() {
     if (this._browser)
       this._browser._contexts.delete(this);
     this.emit(Events.BrowserContext.Close, this);
diff --git a/src/client/page.ts b/src/client/page.ts
index 882510baae..4cb2915e14 100644
--- a/src/client/page.ts
+++ b/src/client/page.ts
@@ -186,10 +186,10 @@ export class Page extends ChannelOwner<channels.PageChannel, channels.PageInitia
   async _onBinding(bindingCall: BindingCall) {
     const func = this._bindings.get(bindingCall._initializer.name);
     if (func) {
-      bindingCall.call(func);
+      await bindingCall.call(func);
       return;
     }
-    this._browserContext._onBinding(bindingCall);
+    await this._browserContext._onBinding(bindingCall);
   }
 
   _onWorker(worker: Worker): void {
diff --git a/src/dispatchers/androidDispatcher.ts b/src/dispatchers/androidDispatcher.ts
index b049596fad..86caa8892c 100644
--- a/src/dispatchers/androidDispatcher.ts
+++ b/src/dispatchers/androidDispatcher.ts
@@ -184,7 +184,7 @@ export class AndroidSocketDispatcher extends Dispatcher<SocketBackend, channels.
   }
 
   async close(params: channels.AndroidSocketCloseParams, metadata: CallMetadata): Promise<void> {
-    await this._object.close();
+    this._object.close();
   }
 }
 
diff --git a/src/remote/playwrightServer.ts b/src/remote/playwrightServer.ts
index f0b44c289b..14880cdb24 100644
--- a/src/remote/playwrightServer.ts
+++ b/src/remote/playwrightServer.ts
@@ -48,11 +48,11 @@ export class PlaywrightServer {
       ws.on('message', message => dispatcherConnection.dispatch(JSON.parse(message.toString())));
       ws.on('close', () => {
         debugLog('Client closed');
-        this._onDisconnect();
+        this._onDisconnect().catch(debugLog);
       });
       ws.on('error', error => {
         debugLog('Client error ' + error);
-        this._onDisconnect();
+        this._onDisconnect().catch(debugLog);
       });
       dispatcherConnection.onmessage = message => ws.send(JSON.stringify(message));
       new PlaywrightDispatcher(dispatcherConnection.rootDispatcher(), createPlaywright());
diff --git a/src/server/android/android.ts b/src/server/android/android.ts
index 3e98f84c7e..b477470ab7 100644
--- a/src/server/android/android.ts
+++ b/src/server/android/android.ts
@@ -43,7 +43,7 @@ export interface Backend {
 export interface DeviceBackend {
   serial: string;
   status: string;
-  close(): Promise<void>;
+  close(): void;
   init(): Promise<void>;
   runCommand(command: string): Promise<Buffer>;
   open(command: string): Promise<SocketBackend>;
@@ -51,7 +51,7 @@ export interface DeviceBackend {
 
 export interface SocketBackend extends EventEmitter {
   write(data: Buffer): Promise<void>;
-  close(): Promise<void>;
+  close(): void;
 }
 
 export class Android extends SdkObject {
@@ -176,7 +176,7 @@ export class AndroidDevice extends SdkObject {
       await this.installApk(await readFileAsync(require.resolve(`../../../bin/${file}`)));
 
     debug('pw:android')('Starting the new driver');
-    this.shell('am instrument -w com.microsoft.playwright.androiddriver.test/androidx.test.runner.AndroidJUnitRunner');
+    this.shell('am instrument -w com.microsoft.playwright.androiddriver.test/androidx.test.runner.AndroidJUnitRunner').catch(e => debug('pw:android')(e));
     const socket = await this._waitForLocalAbstract('playwright_android_driver_socket');
     const transport = new Transport(socket, socket, socket, 'be');
     transport.onmessage = message => {
@@ -301,7 +301,7 @@ export class AndroidDevice extends SdkObject {
     await installSocket.write(content);
     const success = await new Promise(f => installSocket.on('data', f));
     debug('pw:android')('Written driver bytes: ' + success);
-    await installSocket.close();
+    installSocket.close();
   }
 
   async push(content: Buffer, path: string, mode = 0o644): Promise<void> {
@@ -325,7 +325,7 @@ export class AndroidDevice extends SdkObject {
     const code = result.slice(0, 4).toString();
     if (code !== 'OKAY')
       throw new Error('Could not push: ' + code);
-    await socket.close();
+    socket.close();
   }
 
   private async _refreshWebViews() {
@@ -420,7 +420,7 @@ Sec-WebSocket-Version: 13\r
   }
 
   async close() {
-    await this._socket!.close();
+    this._socket!.close();
   }
 }
 
diff --git a/src/server/android/backendAdb.ts b/src/server/android/backendAdb.ts
index 2ce9915af0..1927994b51 100644
--- a/src/server/android/backendAdb.ts
+++ b/src/server/android/backendAdb.ts
@@ -75,7 +75,7 @@ async function runCommand(command: string, serial?: string): Promise<Buffer> {
   } else {
     commandOutput = await socket.readAll();
   }
-  await socket.close();
+  socket.close();
   return commandOutput;
 }
 
@@ -138,7 +138,7 @@ class BufferedSocketWrapper extends EventEmitter implements SocketBackend {
     await new Promise(f => this._socket.write(data, f));
   }
 
-  async close() {
+  close() {
     if (this._isClosed)
       return;
     debug('pw:adb')('Close ' + this._command);
diff --git a/src/server/chromium/crDevTools.ts b/src/server/chromium/crDevTools.ts
index cec6124160..6dae9754f2 100644
--- a/src/server/chromium/crDevTools.ts
+++ b/src/server/chromium/crDevTools.ts
@@ -33,7 +33,7 @@ export class CRDevTools {
     this._savePromise = Promise.resolve();
   }
 
-  async install(session: CRSession) {
+  install(session: CRSession) {
     session.on('Runtime.bindingCalled', async event => {
       if (event.name !== kBindingName)
         return;
@@ -66,7 +66,7 @@ export class CRDevTools {
         contextId: event.executionContextId
       }).catch(e => null);
     });
-    await Promise.all([
+    Promise.all([
       session.send('Runtime.enable'),
       session.send('Runtime.addBinding', { name: kBindingName }),
       session.send('Page.enable'),
diff --git a/src/server/chromium/crPage.ts b/src/server/chromium/crPage.ts
index 3ea29466aa..d65e70633d 100644
--- a/src/server/chromium/crPage.ts
+++ b/src/server/chromium/crPage.ts
@@ -646,11 +646,10 @@ class FrameSession {
     session.once('Runtime.executionContextCreated', async event => {
       worker._createExecutionContext(new CRExecutionContext(session, event.context));
     });
-    Promise.all([
-      session._sendMayFail('Runtime.enable'),
-      session._sendMayFail('Network.enable'),
-      session._sendMayFail('Runtime.runIfWaitingForDebugger'),
-    ]);  // This might fail if the target is closed before we initialize.
+    // This might fail if the target is closed before we initialize.
+    session._sendMayFail('Runtime.enable');
+    session._sendMayFail('Network.enable');
+    session._sendMayFail('Runtime.runIfWaitingForDebugger');
     session.on('Runtime.consoleAPICalled', event => {
       const args = event.args.map(o => worker._existingExecutionContext!.createHandle(o));
       this._page._addConsoleMessage(event.type, args, toConsoleMessageLocation(event.stackTrace));
diff --git a/src/server/download.ts b/src/server/download.ts
index 091fa9d454..86f7252d65 100644
--- a/src/server/download.ts
+++ b/src/server/download.ts
@@ -83,7 +83,7 @@ export class Download {
       throw new Error('Download not found on disk. Check download.failure() for details.');
 
     if (this._finished) {
-      saveCallback(path.join(this._downloadsPath, this._uuid));
+      saveCallback(path.join(this._downloadsPath, this._uuid)).catch(e => {});
       return;
     }
     this._saveCallbacks.push(saveCallback);
@@ -117,7 +117,7 @@ export class Download {
       const fileName = path.join(this._downloadsPath, this._uuid);
       await util.promisify(fs.unlink)(fileName).catch(e => {});
     }
-    this._reportFinished('Download deleted upon browser context closure.');
+    await this._reportFinished('Download deleted upon browser context closure.');
   }
 
   async _reportFinished(error?: string) {
@@ -128,7 +128,7 @@ export class Download {
 
     if (error) {
       for (const callback of this._saveCallbacks)
-        callback('', error);
+        await callback('', error);
     } else {
       const fullPath = path.join(this._downloadsPath, this._uuid);
       for (const callback of this._saveCallbacks)
diff --git a/src/server/firefox/ffExecutionContext.ts b/src/server/firefox/ffExecutionContext.ts
index 7af3563c31..293204ca4e 100644
--- a/src/server/firefox/ffExecutionContext.ts
+++ b/src/server/firefox/ffExecutionContext.ts
@@ -90,7 +90,7 @@ export class FFExecutionContext implements js.ExecutionContextDelegate {
     await this._session.send('Runtime.disposeObject', {
       executionContextId: this._executionContextId,
       objectId: handle._objectId,
-    }).catch(error => {});
+    });
   }
 }
 
diff --git a/src/server/firefox/ffPage.ts b/src/server/firefox/ffPage.ts
index 1889d32319..89469e940e 100644
--- a/src/server/firefox/ffPage.ts
+++ b/src/server/firefox/ffPage.ts
@@ -232,14 +232,14 @@ export class FFPage implements PageDelegate {
     const context = this._contextIdToContext.get(event.executionContextId)!;
     const pageOrError = await this.pageOrError();
     if (!(pageOrError instanceof Error))
-      this._page._onBindingCalled(event.payload, context);
+      await this._page._onBindingCalled(event.payload, context);
   }
 
   async _onFileChooserOpened(payload: Protocol.Page.fileChooserOpenedPayload) {
     const {executionContextId, element} = payload;
     const context = this._contextIdToContext.get(executionContextId)!;
     const handle = context.createHandle(element).asElement()!;
-    this._page._onFileChooserOpened(handle);
+    await this._page._onFileChooserOpened(handle);
   }
 
   async _onWorkerCreated(event: Protocol.Page.workerCreatedPayload) {
@@ -267,7 +267,7 @@ export class FFPage implements PageDelegate {
     // Note: we receive worker exceptions directly from the page.
   }
 
-  async _onWorkerDestroyed(event: Protocol.Page.workerDestroyedPayload) {
+  _onWorkerDestroyed(event: Protocol.Page.workerDestroyedPayload) {
     const workerId = event.workerId;
     const worker = this._workers.get(workerId);
     if (!worker)
diff --git a/src/server/javascript.ts b/src/server/javascript.ts
index 2eac1a143a..bb4a3f201f 100644
--- a/src/server/javascript.ts
+++ b/src/server/javascript.ts
@@ -160,11 +160,11 @@ export class JSHandle<T = any> extends SdkObject {
     return null;
   }
 
-  async dispose() {
+  dispose() {
     if (this._disposed)
       return;
     this._disposed = true;
-    await this._context._delegate.releaseHandle(this);
+    this._context._delegate.releaseHandle(this).catch(e => {});
   }
 
   toString(): string {
diff --git a/src/server/progress.ts b/src/server/progress.ts
index cf146a597d..12ad76b1a7 100644
--- a/src/server/progress.ts
+++ b/src/server/progress.ts
@@ -106,7 +106,7 @@ export class ProgressController {
       return result;
     } catch (e) {
       this._state = 'aborted';
-      await Promise.all(this._cleanups.splice(0).map(cleanup => runCleanup(cleanup)));
+      await Promise.all(this._cleanups.splice(0).map(runCleanup));
       throw e;
     } finally {
       clearTimeout(timer);
diff --git a/src/server/trace/recorder/tracer.ts b/src/server/trace/recorder/tracer.ts
index 05c21524d3..a179f11c6c 100644
--- a/src/server/trace/recorder/tracer.ts
+++ b/src/server/trace/recorder/tracer.ts
@@ -209,7 +209,7 @@ class ContextTracer {
   async dispose() {
     this._disposed = true;
     helper.removeEventListeners(this._eventListeners);
-    this._snapshotter.dispose();
+    await this._snapshotter.dispose();
     const event: trace.ContextDestroyedTraceEvent = {
       timestamp: monotonicTime(),
       type: 'context-destroyed',
@@ -219,7 +219,6 @@ class ContextTracer {
 
     // Ensure all writes are finished.
     await this._appendEventChain;
-    await this._snapshotter.dispose();
   }
 
   private _appendTraceEvent(event: any) {
diff --git a/src/server/webkit/wkExecutionContext.ts b/src/server/webkit/wkExecutionContext.ts
index 4cabce197c..37b8186468 100644
--- a/src/server/webkit/wkExecutionContext.ts
+++ b/src/server/webkit/wkExecutionContext.ts
@@ -143,7 +143,7 @@ export class WKExecutionContext implements js.ExecutionContextDelegate {
   async releaseHandle(handle: js.JSHandle): Promise<void> {
     if (!handle._objectId)
       return;
-    await this._session.send('Runtime.releaseObject', {objectId: handle._objectId}).catch(error => {});
+    await this._session.send('Runtime.releaseObject', {objectId: handle._objectId});
   }
 }
 
diff --git a/src/server/webkit/wkPage.ts b/src/server/webkit/wkPage.ts
index c3610a7a5d..18e2927ee6 100644
--- a/src/server/webkit/wkPage.ts
+++ b/src/server/webkit/wkPage.ts
@@ -113,7 +113,7 @@ export class WKPage implements PageDelegate {
     promises.push(this.updateHttpCredentials());
     if (this._browserContext._permissions.size) {
       for (const [key, value] of this._browserContext._permissions)
-        this._grantPermissions(key, value);
+        promises.push(this._grantPermissions(key, value));
     }
     if (this._browserContext._options.recordVideo) {
       const size = this._browserContext._options.recordVideo.size || this._browserContext._options.viewport || { width: 1280, height: 720 };