sync: `configlet sync --update` raised `OSError`

In WSL under Windows 10. Transcript follows:

```
$ bin/configlet sync --update
Syncing exercises...
Cloning the problem-specifications repo into /mnt/c/Users/bugma/Dropbox/ExercismV3/vbnet/.problem-specifications...
[warn] all-your-base: missing 21 test cases
The following test case is missing:
{
"uuid": "5ce422f9-7a4b-4f44-ad29-49c67cb32d2c",
"description": "single bit one to decimal",
"property": "rebase",
"input": {
"inputBase": 2,
"digits": [
1
],
"outputBase": 10
},
"expected": [
1
]
}

Do you want to include the test case ([y]es/[n]o/[s]kip)? y

The following test case is missing:
{
"uuid": "0cc3fea8-bb79-46ac-a2ab-5a2c93051033",
"description": "binary to single decimal",
"property": "rebase",
"input": {
"inputBase": 2,
"digits": [
1,
0,
1
],
"outputBase": 10
},
"expected": [
5
]
}

Do you want to include the test case ([y]es/[n]o/[s]kip)? y

The following test case is missing:
{
"uuid": "f12db0f9-0d3d-42c2-b3ba-e38cb375a2b8",
"description": "single decimal to binary",
"property": "rebase",
"input": {
"inputBase": 10,
"digits": [
5
],
"outputBase": 2
},
"expected": [
1,
0,
1
]
}

Do you want to include the test case ([y]es/[n]o/[s]kip)? y

The following test case is missing:
{
"uuid": "2c45cf54-6da3-4748-9733-5a3c765d925b",
"description": "binary to multiple decimal",
"property": "rebase",
"input": {
"inputBase": 2,
"digits": [
1,
0,
1,
0,
1,
0
],
"outputBase": 10
},
"expected": [
4,
2
]
}

Do you want to include the test case ([y]es/[n]o/[s]kip)? y

The following test case is missing:
{
"uuid": "65ddb8b4-8899-4fcc-8618-181b2cf0002d",
"description": "decimal to binary",
"property": "rebase",
"input": {
"inputBase": 10,
"digits": [
4,
2
],
"outputBase": 2
},
"expected": [
1,
0,
1,
0,
1,
0
]
}

Do you want to include the test case ([y]es/[n]o/[s]kip)? y

The following test case is missing:
{
"uuid": "8d418419-02a7-4824-8b7a-352d33c6987e",
"description": "trinary to hexadecimal",
"property": "rebase",
"input": {
"inputBase": 3,
"digits": [
1,
1,
2,
0
],
"outputBase": 16
},
"expected": [
2,
10
]
}

Do you want to include the test case ([y]es/[n]o/[s]kip)? y

The following test case is missing:
{
"uuid": "d3901c80-8190-41b9-bd86-38d988efa956",
"description": "hexadecimal to trinary",
"property": "rebase",
"input": {
"inputBase": 16,
"digits": [
2,
10
],
"outputBase": 3
},
"expected": [
1,
1,
2,
0
]
}

Do you want to include the test case ([y]es/[n]o/[s]kip)? y

The following test case is missing:
{
"uuid": "5d42f85e-21ad-41bd-b9be-a3e8e4258bbf",
"description": "15-bit integer",
"property": "rebase",
"input": {
"inputBase": 97,
"digits": [
3,
46,
60
],
"outputBase": 73
},
"expected": [
6,
10,
45
]
}

Do you want to include the test case ([y]es/[n]o/[s]kip)? y

The following test case is missing:
{
"uuid": "d68788f7-66dd-43f8-a543-f15b6d233f83",
"description": "empty list",
"property": "rebase",
"input": {
"inputBase": 2,
"digits": [],
"outputBase": 10
},
"expected": [
0
]
}

Do you want to include the test case ([y]es/[n]o/[s]kip)? y

The following test case is missing:
{
"uuid": "5e27e8da-5862-4c5f-b2a9-26c0382b6be7",
"description": "single zero",
"property": "rebase",
"input": {
"inputBase": 10,
"digits": [
0
],
"outputBase": 2
},
"expected": [
0
]
}

Do you want to include the test case ([y]es/[n]o/[s]kip)? y

The following test case is missing:
{
"uuid": "2e1c2573-77e4-4b9c-8517-6c56c5bcfdf2",
"description": "multiple zeros",
"property": "rebase",
"input": {
"inputBase": 10,
"digits": [
0,
0,
0
],
"outputBase": 2
},
"expected": [
0
]
}

Do you want to include the test case ([y]es/[n]o/[s]kip)? y

The following test case is missing:
{
"uuid": "3530cd9f-8d6d-43f5-bc6e-b30b1db9629b",
"description": "leading zeros",
"property": "rebase",
"input": {
"inputBase": 7,
"digits": [
0,
6,
0
],
"outputBase": 10
},
"expected": [
4,
2
]
}

Do you want to include the test case ([y]es/[n]o/[s]kip)? y

The following test case is missing:
{
"uuid": "a6b476a1-1901-4f2a-92c4-4d91917ae023",
"description": "input base is one",
"property": "rebase",
"input": {
"inputBase": 1,
"digits": [
0
],
"outputBase": 10
},
"expected": {
"error": "input base must be >= 2"
}
}

Do you want to include the test case ([y]es/[n]o/[s]kip)? y

The following test case is missing:
{
"uuid": "e21a693a-7a69-450b-b393-27415c26a016",
"description": "input base is zero",
"property": "rebase",
"input": {
"inputBase": 0,
"digits": [],
"outputBase": 10
},
"expected": {
"error": "input base must be >= 2"
}
}

Do you want to include the test case ([y]es/[n]o/[s]kip)? y

The following test case is missing:
{
"uuid": "54a23be5-d99e-41cc-88e0-a650ffe5fcc2",
"description": "input base is negative",
"property": "rebase",
"input": {
"inputBase": -2,
"digits": [
1
],
"outputBase": 10
},
"expected": {
"error": "input base must be >= 2"
}
}

Do you want to include the test case ([y]es/[n]o/[s]kip)? y

The following test case is missing:
{
"uuid": "9eccf60c-dcc9-407b-95d8-c37b8be56bb6",
"description": "negative digit",
"property": "rebase",
"input": {
"inputBase": 2,
"digits": [
1,
-1,
1,
0,
1,
0
],
"outputBase": 10
},
"expected": {
"error": "all digits must satisfy 0 <= d < input base"
}
}

Do you want to include the test case ([y]es/[n]o/[s]kip)? y

The following test case is missing:
{
"uuid": "232fa4a5-e761-4939-ba0c-ed046cd0676a",
"description": "invalid positive digit",
"property": "rebase",
"input": {
"inputBase": 2,
"digits": [
1,
2,
1,
0,
1,
0
],
"outputBase": 10
},
"expected": {
"error": "all digits must satisfy 0 <= d < input base"
}
}

Do you want to include the test case ([y]es/[n]o/[s]kip)? y

The following test case is missing:
{
"uuid": "14238f95-45da-41dc-95ce-18f860b30ad3",
"description": "output base is one",
"property": "rebase",
"input": {
"inputBase": 2,
"digits": [
1,
0,
1,
0,
1,
0
],
"outputBase": 1
},
"expected": {
"error": "output base must be >= 2"
}
}

Do you want to include the test case ([y]es/[n]o/[s]kip)? y

The following test case is missing:
{
"uuid": "73dac367-da5c-4a37-95fe-c87fad0a4047",
"description": "output base is zero",
"property": "rebase",
"input": {
"inputBase": 10,
"digits": [
7
],
"outputBase": 0
},
"expected": {
"error": "output base must be >= 2"
}
}

Do you want to include the test case ([y]es/[n]o/[s]kip)? y

The following test case is missing:
{
"uuid": "13f81f42-ff53-4e24-89d9-37603a48ebd9",
"description": "output base is negative",
"property": "rebase",
"input": {
"inputBase": 2,
"digits": [
1
],
"outputBase": -7
},
"expected": {
"error": "output base must be >= 2"
}
}

Do you want to include the test case ([y]es/[n]o/[s]kip)? y

The following test case is missing:
{
"uuid": "0e6c895d-8a5d-4868-a345-309d094cfe8d",
"description": "both bases are negative",
"property": "rebase",
"input": {
"inputBase": -2,
"digits": [
1
],
"outputBase": -7
},
"expected": {
"error": "input base must be >= 2"
}
}

Do you want to include the test case ([y]es/[n]o/[s]kip)? y

[warn] leap: missing 9 test cases
The following test case is missing:
{
"uuid": "6466b30d-519c-438e-935d-388224ab5223",
"description": "year not divisible by 4 in common year",
"property": "leapYear",
"input": {
"year": 2015
},
"expected": false
}

Do you want to include the test case ([y]es/[n]o/[s]kip)? y

The following test case is missing:
{
"uuid": "ac227e82-ee82-4a09-9eb6-4f84331ffdb0",
"description": "year divisible by 2, not divisible by 4 in common year",
"property": "leapYear",
"input": {
"year": 1970
},
"expected": false
}

Do you want to include the test case ([y]es/[n]o/[s]kip)? y

The following test case is missing:
{
"uuid": "4fe9b84c-8e65-489e-970b-856d60b8b78e",
"description": "year divisible by 4, not divisible by 100 in leap year",
"property": "leapYear",
"input": {
"year": 1996
},
"expected": true
}

Do you want to include the test case ([y]es/[n]o/[s]kip)? y

The following test case is missing:
{
"uuid": "7fc6aed7-e63c-48f5-ae05-5fe182f60a5d",
"description": "year divisible by 4 and 5 is still a leap year",
"property": "leapYear",
"input": {
"year": 1960
},
"expected": true
}

Do you want to include the test case ([y]es/[n]o/[s]kip)? y

The following test case is missing:
{
"uuid": "78a7848f-9667-4192-ae53-87b30c9a02dd",
"description": "year divisible by 100, not divisible by 400 in common year",
"property": "leapYear",
"input": {
"year": 2100
},
"expected": false
}

Do you want to include the test case ([y]es/[n]o/[s]kip)? y

The following test case is missing:
{
"uuid": "9d70f938-537c-40a6-ba19-f50739ce8bac",
"description": "year divisible by 100 but not by 3 is still not a leap year",
"property": "leapYear",
"input": {
"year": 1900
},
"expected": false
}

Do you want to include the test case ([y]es/[n]o/[s]kip)? y

The following test case is missing:
{
"uuid": "42ee56ad-d3e6-48f1-8e3f-c84078d916fc",
"description": "year divisible by 400 is leap year",
"property": "leapYear",
"input": {
"year": 2000
},
"expected": true
}

Do you want to include the test case ([y]es/[n]o/[s]kip)? y

The following test case is missing:
{
"uuid": "57902c77-6fe9-40de-8302-587b5c27121e",
"description": "year divisible by 400 but not by 125 is still a leap year",
"property": "leapYear",
"input": {
"year": 2400
},
"expected": true
}

Do you want to include the test case ([y]es/[n]o/[s]kip)? y

The following test case is missing:
{
"uuid": "c30331f6-f9f6-4881-ad38-8ca8c12520c1",
"description": "year divisible by 200, not divisible by 400 in common year",
"property": "leapYear",
"input": {
"year": 1800
},
"expected": false
}

Do you want to include the test case ([y]es/[n]o/[s]kip)? y

oserr.nim(94) raiseOSError
Error: unhandled exception: Permission denied
Additional info: "/mnt/c/Users/bugma/Dropbox/ExercismV3/vbnet/.problem-specifications/.github/workflow-tests" [OSError]kflow-tests" [OSError]
```