c.RLock()
	defer c.RUnlock()
	return fmt.Errorf("[%s] %w", c.lastErrTime.Format(time.RFC3339), c.lastErr)
}

// computes the exponential backoff duration according to
// https://www.awsarchitectureblog.com/2015/03/backoff.html
func exponentialBackoffWait(r *rand.Rand, unit, cap time.Duration) func(uint) time.Duration {
	if unit > time.Hour {
		// Protect against integer overflow
		panic("unit cannot exceed one hour")
	}

// sexy : 2013-09-11 Internet Naming Company LLC
sexy

// sfr : 2015-08-13 Societe Francaise du Radiotelephone - SFR
sfr

// shangrila : 2015-09-03 Shangri‐La International Hotel Management Limited
shangrila

// sharp : 2014-05-01 Sharp Corporation
sharp

// shaw : 2015-04-23 Shaw Cablesystems G.P.
shaw

// shell : 2015-07-30 Shell Information Technology International Inc
shell

		tag    string
		errStr string
	}{
		{
			time.Date(2017, time.September, 29, 19, 16, 56, 0, utcLoc),
			"RELEASE.2017-09-29T19-16-56Z", "",
		},
		{
			time.Date(2017, time.August, 5, 0, 0, 53, 0, utcLoc),
			"RELEASE.2017-08-05T00-00-53Z", "",
		},
		{
			time.Now().UTC(), "2017-09-29T19:16:56Z",
			"2017-09-29T19:16:56Z is not a valid release tag",
		},
		{
			time.Now().UTC(), "DEVELOPMENT.GOGET",

        assertVersionOlder("2.0.0", "2.0-1");
        assertVersionOlder("2.0-1", "2.0.1");

        assertVersionOlder("2.0.1-klm", "2.0.1-lmn");
        assertVersionOlder("2.0.1", "2.0.1-xyz");
        assertVersionOlder("2.0.1-xyz-1", "2.0.1-1-xyz");

        assertVersionOlder("2.0.1", "2.0.1-123");
        assertVersionOlder("2.0.1-xyz", "2.0.1-123");

        assertVersionOlder("1.2.3-10000000000", "1.2.3-10000000001");

			query:      `SELECT date_diff(year, '2010-01-01T', '2011-01-01T') FROM S3Object LIMIT 1`,
			wantResult: `{"_1":1}`,
		},
		{
			name:       "date_diff_year",
			query:      `SELECT date_diff(month, '2010-01-01T', '2010-05T') FROM S3Object LIMIT 1`,
			wantResult: `{"_1":4}`,
		},
		{
			name:       "date_diff_month_oney",
			query:      `SELECT date_diff(month, '2010T', '2011T') FROM S3Object LIMIT 1`,

        checkVersionsOrder("1.0.0", "1.0-1");

        checkVersionsOrder("2.0-1", "2.0.1");
        checkVersionsOrder("2.0.1-klm", "2.0.1-lmn");
        checkVersionsOrder("2.0.1", "2.0.1-xyz");

        checkVersionsOrder("2.0.1", "2.0.1-123");
        checkVersionsOrder("2.0.1-xyz", "2.0.1-123");
    }

    @Test
    void testLeadingZeroes() {
        checkVersionsOrder("0.7", "2");

 * Different instructions and configuration may be required for other hardware devices.
 *
 * Using a yubikey device as a SSL key store.
 * https://lauri.võsandi.com/2017/03/yubikey-for-ssh-auth.html
 *
 * Using PKCS11 support in the JDK.
 * https://tersesystems.com/blog/2018/09/08/keymanagers-and-keystores/
 *
 * Install OpenSC separately. On a mac `brew cast install opensc`.
 */

        }

        features {
            // https://www.jetbrains.com/help/teamcity/shared-resources.html#Viewing+Shared+Resources+Usage
            // https://blog.jetbrains.com/teamcity/2013/05/explaining-the-shared-resources-plugin/
            // we only allow 1 promotion job running at the same time to avoid website xml conflicts
            feature {
                type = "JetBrains.SharedResources"

        assertEquals("かいしゃ", extractData.getValues("extended-properties:Company")[0]);
        assertEquals("2010-07-22T00:21:00Z", extractData.getValues("dcterms:created")[0]);
        assertEquals("1", extractData.getValues("meta:line-count")[0]);
        assertEquals("2012-05-18T22:44:00Z", extractData.getValues("dcterms:modified")[0]);
        assertEquals("3", extractData.getValues("meta:character-count")[0]);

        pass

    model = ModelWithCustomEncoder(dt_field=datetime(2019, 1, 1, 8))
    assert jsonable_encoder(model) == {"dt_field": "2019-01-01T08:00:00+00:00"}
    subclass_model = ModelWithCustomEncoderSubclass(dt_field=datetime(2019, 1, 1, 8))
    assert jsonable_encoder(subclass_model) == {"dt_field": "2019-01-01T08:00:00+00:00"}


# TODO: remove when deprecating Pydantic v1
@needs_pydanticv1