random but frequent download failures "ERROR: The remote file either doesn't exist..."

[LeeDr]

We use chocolaty to install nmap 7.12 on Windows (2012, 2016 Servers, and Windows 10) but quite often have download failures on nmap (and no download failures on anything else).

I don't think it's a chocolaty problem since it's clearly trying to download and that step fails.

Is there anything we can do on our end? I already put in a check and a retry on the install but it just failed twice in a row.
I've looked at getting chocolaty to have a local cache and it seems rather painful. I'm not sure exactly what the chocolaty packing does (does silent nmap install, starts a service maybe?).

00:14:54.284 + choco install -y --no-progress nmap --version 7.12 --debug --allow-empty-checksums
00:14:54.545 Chocolatey v0.10.11
00:14:54.552 Chocolatey is running on Windows v 6.3.9600.0
00:14:54.558 Command line: "C:\ProgramData\chocolatey\choco.exe" install -y --no-progress nmap --version 7.12 --debug --allow-empty-checksums
00:14:54.558 Received arguments: install -y --no-progress nmap --version 7.12 --debug --allow-empty-checksums
00:14:54.639 The source 'https://chocolatey.org/api/v2/' evaluated to a 'normal' source type
...
...
00:14:58.075 Downloading nmap 
00:14:58.075   from 'https://nmap.org/dist/nmap-7.12-setup.exe'
00:14:58.076 Running Get-WebFile -url 'https://nmap.org/dist/nmap-7.12-setup.exe' -fileName 'C:\Users\vagrant\AppData\Local\Temp\chocolatey\nmap\7.12\nmap-7.12-setup.exe' -options 'System.Collections.Hashtable' 
00:14:58.076 Setting request timeout to  30000
00:14:58.076 Setting read/write timeout to  2700000
00:14:58.077 Setting the UserAgent to 'chocolatey command line'
00:14:59.057 Downloading https://nmap.org/dist/nmap-7.12-setup.exe to C:\Users\vagrant\AppData\Local\Temp\chocolatey\nmap\7.12\nmap-7.12-setup.exe
00:17:09.101 ERROR: The remote file either doesn't exist, is unauthorized, or is forbidden for url 'https://nmap.org/dist/nmap-7.12-setup.exe'. Exception calling "Read" with "3" argument(s): "Received an unexpected EOF or 0 bytes from the transport stream." 
00:17:09.102 This package is likely not broken for licensed users - see https://chocolatey.org/docs/features-private-cdn.
00:17:09.102  at Get-WebFile, C:\ProgramData\chocolatey\helpers\functions\Get-WebFile.ps1: line 329
00:17:09.103 at Get-ChocolateyWebFile, C:\ProgramData\chocolatey\helpers\functions\Get-ChocolateyWebFile.ps1: line 345
00:17:09.103 at Install-ChocolateyPackage, C:\ProgramData\chocolatey\helpers\functions\Install-ChocolateyPackage.ps1: line 324
00:17:09.103 at <ScriptBlock>, C:\ProgramData\chocolatey\lib\nmap\tools\chocolateyInstall.ps1: line 1
00:17:09.104 at <ScriptBlock>, C:\ProgramData\chocolatey\helpers\chocolateyScriptRunner.ps1: line 48
00:17:09.104 at <ScriptBlock>, <No file>: line 1
00:17:09.104 Built-in PowerShell host called with ['[System.Threading.Thread]::CurrentThread.CurrentCulture = '';[System.Threading.Thread]::CurrentThread.CurrentUICulture = ''; & import-module -name 'C:\ProgramData\chocolatey\helpers\chocolateyInstaller.psm1'; & 'C:\ProgramData\chocolatey\helpers\chocolateyScriptRunner.ps1' -packageScript 'C:\ProgramData\chocolatey\lib\nmap\tools\chocolateyInstall.ps1' -installArguments '' -packageParameters '''] exited with '404'.
00:17:09.237 Calling command ['"C:\Windows\System32\shutdown.exe" /a']
00:17:09.237 Command ['"C:\Windows\System32\shutdown.exe" /a'] exited with '1116'
00:17:09.237 Capturing package files in 'C:\ProgramData\chocolatey\lib\nmap'
00:17:09.238 The install of nmap was NOT successful.
00:17:09.238 Error while running 'C:\ProgramData\chocolatey\lib\nmap\tools\chocolateyInstall.ps1'.
00:17:09.238  See log for details.
00:17:11.228 
00:17:11.228 Chocolatey installed 0/1 packages. 1 packages failed.
00:17:11.228  See the log for details (C:\ProgramData\chocolatey\logs\chocolatey.log).
00:17:11.228 
00:17:11.229 Failures
00:17:11.230  - nmap (exited 404) - Error while running 'C:\ProgramData\chocolatey\lib\nmap\tools\chocolateyInstall.ps1'.
00:17:11.231  See log for details.