Can't download with long file path

[smege1001]

Checklist

• I'm reporting a broken site support issue
• I've verified that I'm running youtube-dl version 2020.03.08
• I've checked that all provided URLs are alive and playable in a browser
• I've checked that all URLs and arguments with special characters are properly quoted or escaped
• I've searched the bugtracker for similar bug reports including closed ones
• I've read bugs section in FAQ

Verbose log

[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-v', 'https://youtube.com/watch?v=fslvLLKBkvg', '-o', '%(title)s/%(title)s-%(id)s.%(ext)s', '--write-info-json']
[debug] Encodings: locale cp1252, fs mbcs, out cp850, pref cp1252
[debug] youtube-dl version 2020.03.08
[debug] Python version 3.4.4 (CPython) - Windows-10-10.0.18362
[debug] exe versions: ffmpeg git-2020-03-15-c467328, ffprobe git-2020-03-15-c467328
[debug] Proxy map: {}
[youtube] fslvLLKBkvg: Downloading webpage
[youtube] fslvLLKBkvg: Downloading MPD manifest
[debug] Default format spec: bestvideo+bestaudio/best
[info] Writing video description metadata as JSON to: YandereDev's Cum Chalice in Beat Saber, welp looks like I won the discord ban speedrun already\YandereDev's Cum Chalice in Beat Saber, welp looks like I won the discord ban speedrun already-fslvLLKBkvg.info.json
[debug] Invoking downloader on 'https://manifest.googlevideo.com/api/manifest/dash/expire/1584841771/ei/y292XuDlL76gxN8PsbSCkA4/ip/105.155.64.18/id/7ec96f2cb28192f8/source/youtube/requiressl/yes/playback_host/r4---sn-p5h-g53e.googlevideo.com/mh/Z7/mm/31%2C29/mn/sn-p5h-g53e%2Csn-hgn7yn7e/ms/au%2Crdu/mv/m/mvi/3/pl/21/hfr/all/as/fmp4_audio_clear%2Cwebm_audio_clear%2Cwebm2_audio_clear%2Cfmp4_sd_hd_clear%2Cwebm2_sd_hd_clear/initcwndbps/165000/vprv/1/mt/1584820060/fvip/5/keepalive/yes/itag/0/sparams/expire%2Cei%2Cip%2Cid%2Csource%2Crequiressl%2Chfr%2Cas%2Cvprv%2Citag/sig/ADKhkGMwRQIgAbyfPMeGoFonLsrAEgaCR4Fi-kWzDefotqfEpuyktqoCIQD909zHAcTdPioEHW9AiJwrnXksyycsu7E5m5fOSXBHag%3D%3D/lsparams/playback_host%2Cmh%2Cmm%2Cmn%2Cms%2Cmv%2Cmvi%2Cpl%2Cinitcwndbps/lsig/ABSNjpQwRQIgCKAJT96CUb2XS7mTBC5s73XhQgYrnzZO3tBFNZQDjFMCIQDfFxEI4ppel3MGzEsAGqVucyqsKCsV3pnXcfaeufIwaQ%3D%3D'
[dashsegments] Total fragments: 7
[download] Destination: YandereDev's Cum Chalice in Beat Saber, welp looks like I won the discord ban speedrun already\YandereDev's Cum Chalice in Beat Saber, welp looks like I won the discord ban speedrun already-fslvLLKBkvg.f299.mp4
ERROR: unable to open for writing: [Errno 2] No such file or directory: "YandereDev's Cum Chalice in Beat Saber, welp looks like I won the discord ban speedrun already\\YandereDev's Cum Chalice in Beat Saber, welp looks like I won the discord ban speedrun already-fslvLLKBkvg.f299.mp4.part-Frag0.part"
Traceback (most recent call last):
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmp378onz6j\build\youtube_dl\downloader\http.py", line 250, in download
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmp378onz6j\build\youtube_dl\utils.py", line 2046, in sanitize_open
FileNotFoundError: [Errno 2] No such file or directory: "YandereDev's Cum Chalice in Beat Saber, welp looks like I won the discord ban speedrun already\\YandereDev's Cum Chalice in Beat Saber, welp looks like I won the discord ban speedrun already-fslvLLKBkvg.f299.mp4.part-Frag0.part"

Description

Trying to download the video with my own output template but getting this error:
FileNotFound: [Errno 2]

Downloading the video with youtube-dl's default output template seems to work though.