cargo update requires elevation on windows

[imbaczek]

Not even help works:

$ cargo help update
Subcommand failed to run: OS Error 740: Żądana operacja wymaga podniesienia uprawnień.
$ uname -a
MINGW32_NT-6.2 BAQ-DESKTOP 1.0.18(0.48/3/2) 2012-11-21 22:34 i686 Msys
$ cargo -V
cargo 0.0.1-pre-nightly (8241e31 2014-08-17 05:19:23 +0000)

Error 740 is "The requested operation requires elevation." in English.

[alexcrichton]

Oh dear, that's not good! It looks like the files themselves may be corrupted as I can't run the executables manually, which seems highly suspicious!

[alexcrichton]

It looks like this only affects cargo-update, and the reason is, (quoting rust-lang/rust#13439 (comment))

recent windows (>= 7) triggers UAC if executable has "update" in filename

[imbaczek]

Adding a manifest should be the solution. I don't know what kind of
problems that may cause.

[imbaczek]

note that embedding a manifest doesn't only remove the need for elevation, but also makes the application resistant against the VirtualStore insanity: http://blogs.technet.com/b/mrsnrub/archive/2010/08/11/uac-virtualization-allowing-standard-users-to-update-a-system-protected-area.aspx. getting rid of update.exe solves the direct problem, but manifests should be still included.