Ubuntu 20.04 downloads a zero size zlib source code package

[Boulder08]

Windows Version

Microsoft Windows [Version 10.0.19045.4291]

WSL Version

2.1.5.0

Are you using WSL 1 or WSL 2?

• WSL 2
• WSL 1

Kernel Version

5.15.146.1-microsoft-standard-WSL2

Distro Version

Ubuntu 22.04

Other Software

No response

Repro Steps

I'm trying to build CoreELEC (https://wiki.coreelec.org/coreelec:build_ce). The process fails because apparently the zlib source package download fails and just produces a zero byte file. The build script tries two different locations and both have the same issue. With the same Ubuntu version running in VirtualBox, there are no issues whatsoever.

Running a simple wget https://zlib.net/fossils/zlib-1.3.1.tar.gz also produces a broken file.

Expected Behavior

The file should be about 1,5MB in size.

Actual Behavior

Zero size file is saved to the virtual disk.

Diagnostic Logs

No response

[github-actions]

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How to collect WSL logs

Download and execute collect-wsl-logs.ps1 in an administrative powershell prompt:

Invoke-WebRequest -UseBasicParsing "https://raw.githubusercontent.com/microsoft/WSL/master/diagnostics/collect-wsl-logs.ps1" -OutFile collect-wsl-logs.ps1
Set-ExecutionPolicy Bypass -Scope Process -Force
.\collect-wsl-logs.ps1

The scipt will output the path of the log file once done.

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[zcobol]

zcobol@toto:~$ wget https://zlib.net/fossils/zlib-1.3.1.tar.gz
--2024-04-17 07:59:16--  https://zlib.net/fossils/zlib-1.3.1.tar.gz
Resolving zlib.net (zlib.net)... 85.187.148.2
Connecting to zlib.net (zlib.net)|85.187.148.2|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 1512791 (1.4M) [application/x-gzip]
Saving to: ‘zlib-1.3.1.tar.gz’

zlib-1.3.1.tar.gz             100%[=================================================>]   1.44M  4.50MB/s    in 0.3s

2024-04-17 07:59:17 (4.50 MB/s) - ‘zlib-1.3.1.tar.gz’ saved [1512791/1512791]

Why is your download failing 🤔

[Boulder08]

It started working after I was trying to reproduce it to get a log. Weird thing because I had attempted the download numerous times yesterday and today before that. I'll have to try again later.

[Boulder08]

Unable to reproduce.