diamond exercise fails to build, while it build fine locally and all tests pass

[Grenkin1988]

Given:

module Diamond
let make (target: char) =
    let witeLine letterCount (line: int, letter: char) =
        let beforeAndAfter = "".PadRight(letterCount - line - 1)
        let middleLenght = if line = 0 then 0 else (line * 2 - 1)
        let middle = "".PadRight(middleLenght)
        if letter = 'A' then
            sprintf "%s%c%s" beforeAndAfter letter beforeAndAfter
        else
            sprintf "%s%c%s%c%s" beforeAndAfter letter middle letter beforeAndAfter
    
    let usedLetters = ['A'..target] |> List.mapi (fun x y -> (x,y))
    usedLetters
    |> List.rev |> List.tail
    |> List.append usedLetters
    |> List.map (fun (line, letter) -> witeLine usedLetters.Length (line, letter))
    |> List.reduce (fun x y -> sprintf "%s\n%s" x y)

When I submit code
Then it fails with not informative error:

[ErikSchierboom]

This is a really weird issue as I can't reproduce it locally (using the test runner).

[Grenkin1988]

module SimpleLinkedList

type LinkedList<'a> =
    | Empty
    | List of current : 'a * next : LinkedList<'a>

let nil = Empty

let create x n = List(x, n)

let isNil x = x = nil

let next x = match x with List(_,n) -> n | Empty -> x

let datum x = match x with List(x,_) -> x | Empty -> failwith "The list is empty"

let toList x =
    let rec build x list =
        match x with
        | Empty -> list
        | List(cur, next) ->
            List.append list [cur] |> build next
    build x []

let fromList xs =
    let rec build list acc =
        match list with
        | [] -> acc
        | head :: tail -> create head acc |> build tail
    build (List.rev xs) nil

let reverse x =
    let rec build x rev =
        match x with
        | Empty -> rev
        | List(cur, next) ->
            create cur rev
            |> build next
    build x nil

@ErikSchierboom
Here is another one, again I submit code and it give error without any information

Am I cursed?

[ErikSchierboom]

That seems unlikely. I'll look into it

[ErikSchierboom]

Both problems are due to the test files using xUnit attributes that are not [<Fact>]. This is a known issue and something that @martinfreedman is looking into.

[ErikSchierboom]

See #1029 (comment) for the discussion.

[Grenkin1988]

Looks like it is fixed