subtle-2.3.0 and clear_on_drop CANNOT compile. HELP

[kaidoxue]

I cann't compile some packge, please help , thank you.

Output of "cargo build"

error[E0210]: type parameter T must be used as the type parameter for some local type (e.g., MyStruct<T>)
--> C:\Users\KAIDO.cargo\registry\src\mirrors.sjtug.sjtu.edu.cn-7a04d2510079875b\subtle-2.3.0\src\lib.rs:510:1
|
510 | impl From<CtOption> for Option {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ type parameter T must be used as the type parameter for some local type
|
= note: only traits defined in the current crate can be implemented for a type parameter

error: aborting due to previous error

For more information about this error, try rustc --explain E0210.
error: Could not compile subtle.
warning: build failed, waiting for other jobs to finish...
error: cannot find macro llvm_asm! in this scope
--> C:\Users\KAIDO.cargo\registry\src\mirrors.sjtug.sjtu.edu.cn-7a04d2510079875b\clear_on_drop-0.2.4\src\hide.rs:38:17
|
38 | llvm_asm!("" : : "r" (ptr as *mut u8) : "memory");
| ^^^^^^^^

error: cannot find macro llvm_asm! in this scope
--> C:\Users\KAIDO.cargo\registry\src\mirrors.sjtug.sjtu.edu.cn-7a04d2510079875b\clear_on_drop-0.2.4\src\hide.rs:48:17
|
48 | llvm_asm!("" : "=*m" (ptr) : "*0" (ptr));
| ^^^^^^^^

error: aborting due to 2 previous errors

error: Could not compile clear_on_drop.
warning: build failed, waiting for other jobs to finish...
error: build failed

[hdevalence]

Hi, this is caused by the Rust 1.41 MSRV requirement on subtle. Try updating your rust version to 1.41 or above.

[kaidoxue]

D:\Projects\bulletproofs-main>rustup update
info: syncing channel updates for 'stable-x86_64-pc-windows-msvc'
info: syncing channel updates for 'nightly-x86_64-pc-windows-msvc'
info: checking for self-updates

stable-x86_64-pc-windows-msvc unchanged - rustc 1.47.0 (18bf6b4f0 2020-10-07)
nightly-x86_64-pc-windows-msvc unchanged - rustc 1.49.0-nightly (25f6938da 2020-11-09)

info: cleaning up downloads & tmp directories

My rust version maybe 1.41 or above.....but still cannot comile subtle
Please Help, Thanks @hdevalence

[kaidoxue]

error[E0432]: unresolved import crate::arch::x86_64::_mm_movemask_pi8
--> C:\Users\KAIDO.cargo\registry\src\mirrors.sjtug.sjtu.edu.cn-7a04d2510079875b\packed_simd-0.3.3\src\codegen\reductions\mask\x86\sse.rs:62:21
|
62 | use crate::arch::x86_64::_mm_movemask_pi8;
| ^^^^^^^^^^^^^^^^^^^^^----------------
| | |
| | help: a similar name exists in the module: _mm_movemask_epi8
| no _mm_movemask_pi8 in arch::x86_64
|
::: C:\Users\KAIDO.cargo\registry\src\mirrors.sjtug.sjtu.edu.cn-7a04d2510079875b\packed_simd-0.3.3\src\codegen\reductions\mask.rs:52:1
|
52 | impl_mask_reductions!(m32x2);
| ----------------------------- in this macro invocation
|
= note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

When I edit environment variety, change to 1.49-nightly. Occur the new error.....

[hdevalence]

Hmm, does that error occur on stable rust without using the simd_backend?

[jadeydi]

rust-lang/packed_simd#288 (comment)

I use this, then cargo test works

[kernel1983]

build passed with recent nightly and several lines deleted

~/bulletproofs$ git diff
diff --git a/rust-toolchain b/rust-toolchain
index ed6f0c1..eb726a2 100644
--- a/rust-toolchain
+++ b/rust-toolchain
@@ -1 +1 @@
-nightly-2019-07-31
+nightly-2021-11-03
diff --git a/src/lib.rs b/src/lib.rs
index 41b1edd..0fe8004 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,8 +1,5 @@
 #![cfg_attr(not(feature = "std"), no_std)]
 #![feature(nll)]
-#![feature(external_doc)]
-#![feature(try_trait)]
-#![deny(missing_docs)]
 #![doc(include = "../README.md")]
 #![doc(html_logo_url = "https://doc.dalek.rs/assets/dalek-logo-clear.png")]
 #![doc(html_root_url = "https://docs.rs/bulletproofs/2.0.0")]

[hdevalence]

Hi all, the upstream for this crate is now https://github.com/zkcrypto/bulletproofs and this issue should be already fixed there.