Starting with nightly-2021-01-13 (1.51) rustc fails to build archives on Windows 7

[MSxDOS]

E.g. cargo check --verbose on https://github.com/japaric/ufmt

F:\ufmt-master>cargo check --verbose
   Compiling unicode-xid v0.2.1
       Fresh ufmt-write v0.1.0 (F:\ufmt-master\write)
     Running `rustc --crate-name unicode_xid F:\.cargo\registry\src\github.com-1ecc6299db9
ec823\unicode-xid-0.2.1\src\lib.rs --error-format=json --json=diagnostic-rendered-ansi,art
ifacts --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 -
-cfg "feature=\"default\"" -C metadata=df09097284490053 -C extra-filename=-df0909728449005
3 --out-dir F:\ufmt-master\target\debug\deps -L dependency=F:\ufmt-master\target\debug\dep
s --cap-lints allow`
       Fresh proc-macro-hack v0.5.19
   Compiling proc-macro2 v1.0.24
     Running `rustc --crate-name proc_macro2 --edition=2018 F:\.cargo\registry\src\github.
com-1ecc6299db9ec823\proc-macro2-1.0.24\src\lib.rs --error-format=json --json=diagnostic-r
endered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no
-C debuginfo=2 --cfg "feature=\"default\"" --cfg "feature=\"proc-macro\"" -C metadata=b463
43984a7d2c00 -C extra-filename=-b46343984a7d2c00 --out-dir F:\ufmt-master\target\debug\dep
s -L dependency=F:\ufmt-master\target\debug\deps --extern unicode_xid=F:\ufmt-master\targe
t\debug\deps\libunicode_xid-df09097284490053.rmeta --cap-lints allow --cfg lexerror_displa
y --cfg hygiene --cfg use_proc_macro --cfg wrap_proc_macro --cfg proc_macro_span`
error: failed to build archive: permission denied

error: aborting due to previous error

error: could not compile `unicode-xid`

Caused by:
  process didn't exit successfully: `rustc --crate-name unicode_xid F:\.cargo\registry\src
\github.com-1ecc6299db9ec823\unicode-xid-0.2.1\src\lib.rs --error-format=json --json=diagn
ostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C embed-bitc
ode=no -C debuginfo=2 --cfg "feature=\"default\"" -C metadata=df09097284490053 -C extra-fi
lename=-df09097284490053 --out-dir F:\ufmt-master\target\debug\deps -L dependency=F:\ufmt-
master\target\debug\deps --cap-lints allow` (exit code: 1)
warning: build failed, waiting for other jobs to finish...
error: failed to build archive: permission denied

error: aborting due to previous error

error: build failed

rustc 1.51.0-nightly (e38fb306b 2021-01-14)
binary: rustc
commit-hash: e38fb306b7f5e65cca34df2dab1f0db15e1defb4
commit-date: 2021-01-14
host: x86_64-pc-windows-msvc
release: 1.51.0-nightly
LLVM version: 11.0

[tesuji]

Cannot reproduce on Windows target on CI.
Maybe check you systems again.

[MSxDOS]

The failure happens on a Windows 7 x64 machine. I reproduced this on another machine running Windows 7 x86, this time with i686-pc-windows-gnu toolchain.

[tesuji]

I don't have any Windows machine to test (left alone Windows 7 which not available on CI).
All builds on Windows 10 with msvc and gnu toolchain succeeded: https://github.com/lzutao/ufmt/runs/1717188912?check_suite_focus=true

Let's ping Windows group to see if any folks can verify the issue:
@rustbot ping windows

[rustbot]

Error: Only Rust team members can ping teams.

Please let @rust-lang/release know if you're having trouble with this bot.

[LeSeulArtichaut]

@rustbot ping windows

[rustbot]

Hey Windows Group! This bug has been identified as a good "Windows candidate".
In case it's useful, here are some instructions for tackling these sorts of
bugs. Maybe take a look?
Thanks! <3

cc @arlosi @danielframpton @gdr-at-ms @kennykerr @luqmana @lzybkr @nico-abram @retep998 @rylev @sivadeilra

[sivadeilra]

Speaking for the Windows team at Microsoft, Windows 7 has reached End of Life. We're not interested in providing any further support for Win 7 development.

We (and members of the Rust community) are also actively working on min_api_target_version RFC, which would officially deprecate some older Windows platforms (those that are EOL) for Rust.

I realize that this position may not be satisfying. However, we have to draw the line somewhere on supporting old versions of OSes, and Windows 7 has reached its official EOL. You may still be able to target Windows 7, by cross-compiling (compiling on a modern Windows version, or by compiling on Linux targeting Windows).

[sivadeilra]

Also, you might check whether you have any anti-virus products installed. If so, try disabling them, or at least adding an exception that covers your development tree. Sometimes "permissions" problems are caused by anti-virus products opening and scanning executable files.

[camelid]

Apparently, Windows 7 is still a Tier 1 target, so even though it's EOL for Microsoft, Rust still has to support it. It seems that maybe we should reduce Windows 7 to a lower tier at some point soon.

[LunaBorowska]

I would like to point out that according to Firefox Hardware Across the Web report, Windows 7 is used by 23% of Firefox users. Microsoft also offers paid extended security updates through January 2023 for Windows 7 which may be actually used in enterprise environments. I think it's too early to drop support for Windows 7.

That said, this particular issue feels like an issue with anti-virus. @MSxDOS, could you check whether this issue occurs with an antivirus product disabled?

[asaadmohammed74]

I would like to point out that according to Firefox Hardware Across the Web report, Windows 7 is used by 23% of Firefox users. Microsoft also offers paid extended security updates through January 2023 for Windows 7 which may be actually used in enterprise environments. I think it's too early to drop support for Windows 7.

That said, this particular issue feels like an issue with anti-virus. @MSxDOS, could you check whether this issue occurs with an antivirus product disabled?

im having the same issue, i also use windows 7 x64. and don't have any anti virus installed