add failure telemetry

Author: StellaHuang95

src/managers/pyenv/main.ts

@@ -2,6 +2,7 @@ import { Disposable } from 'vscode';
 import { PythonEnvironmentApi } from '../../api';
 import { traceInfo } from '../../common/logging';
 import { EventNames } from '../../common/telemetry/constants';
+import { classifyError } from '../../common/telemetry/errorClassifier';
 import { sendTelemetryEvent } from '../../common/telemetry/sender';
 import { getPythonApi } from '../../features/pythonApi';
 import { PythonProjectManager } from '../../internal.api';
@@ -33,6 +34,10 @@ export async function registerPyenvFeatures(
         }
     } catch (ex) {
         traceInfo('Pyenv not found, turning off pyenv features.', ex);
+        sendTelemetryEvent(EventNames.MANAGER_REGISTRATION_FAILED, undefined, {
+            managerName: 'pyenv',
+            errorType: classifyError(ex),
+        });
         await notifyMissingManagerIfDefault('ms-python.python:pyenv', projectManager, api);
     }
 }