This is the error that caused it to fail I believe:
Does this file exist: C:\$WINDOWS.~BT\Sources\SafeOS\winre.wim
SP CMountWIM::DoExecute: Failed to mount WIM file C:\$WINDOWS.~BT\Sources\SafeOS\winre.wim. Error 0xC1420127[gle=0xc1420127]
SP Operation failed: Mount WIM file C:\$WINDOWS.~BT\Sources\SafeOS\winre.wim, index 1 to C:\$WINDOWS.~BT\Sources\SafeOS\SafeOS.Mount. Error: 0xC1420127[gle=0x000000b7]
What anti-virus program do you use. Disable it or uninstall it then try the upgrade again.
Ditto if you use a 3rd party firewall like Comodo. Disable for the upgrade.