Some questions about sample code

[shixiongjing]

Hi, I am new to the project, and have never used Rust before. I am sorry that this question might be naive.

I just tried to cloned the repo and followed the guide "Use simulation mode for non SGX-enabled machine (includes macOS)" in the readme to run the helloworld example in software mode. But I got several errors during 'make'. The exact errors actually seem straight forward, but I am worried that I got something wrong in the environment, because that was the example from the tutorial and it was expected to run without problems if I did everything right.

I am running docker on ubuntu 18.04 (tried both docker image 'latest' and 1804:1.0.7), and I have changed the sgx_mode in Makefile to SW. The errors are attached. Any idea on what I did wrong? Please help. Any suggestion is appreciated!

error[E0432]: unresolved import alloc_crate::collections::TryReserveError--> /root/.cargo/git/checkouts/rust-sgx-sdk-fc8771c5c45bde9a/8d9f05a/sgx_tstd/src/collections/mod.rs:35:9 | 35 | pub use alloc_crate::collections::TryReserveError; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ noTryReserveErrorincollections`

error[E0658]: The ! type is experimental
--> /root/.cargo/git/checkouts/rust-sgx-sdk-fc8771c5c45bde9a/8d9f05a/sgx_tstd/src/error.rs:185:16
|
185 | impl Error for ! {
| ^
|
= note: for more information, see rust-lang/rust#35121
= help: add #![feature(never_type)] to the crate attributes to enable

error[E0658]: non exhaustive is an experimental feature
--> /root/.cargo/git/checkouts/rust-sgx-sdk-fc8771c5c45bde9a/8d9f05a/sgx_tstd/src/io/error.rs:86:1
|
86 | #[non_exhaustive]
| ^^^^^^^^^^^^^^^^^
|
= note: for more information, see rust-lang/rust#44109
= help: add #![feature(non_exhaustive)] to the crate attributes to enable

error[E0658]: use of unstable library feature 'todo_macro'
--> /root/.cargo/git/checkouts/rust-sgx-sdk-fc8771c5c45bde9a/8d9f05a/sgx_tstd/src/lib.rs:109:67
|
109 | pub use core::{unreachable, unimplemented, write, writeln, r#try, todo};
| ^^^^
|
= note: for more information, see rust-lang/rust#59277
= help: add #![feature(todo_macro)] to the crate attributes to enable

error[E0658]: use of unstable library feature 'mem_take'
--> /root/.cargo/git/checkouts/rust-sgx-sdk-fc8771c5c45bde9a/8d9f05a/sgx_tstd/src/panicking.rs:266:28
|
266 | let contents = mem::take(self.fill());
| ^^^^^^^^^
|
= note: for more information, see rust-lang/rust#61129
= help: add #![feature(mem_take)] to the crate attributes to enable

error[E0308]: mismatched types
--> /root/.cargo/git/checkouts/rust-sgx-sdk-fc8771c5c45bde9a/8d9f05a/sgx_tstd/src/panicking.rs:236:9
|
236 | &location
| ^^^^^^^^^
| |
| expected struct core::panic::Location, found reference
| help: consider removing the borrow: location
|
= note: expected type core::panic::Location<'_>
found type &core::panic::Location<'_>

error[E0308]: mismatched types
--> /root/.cargo/git/checkouts/rust-sgx-sdk-fc8771c5c45bde9a/8d9f05a/sgx_tstd/src/panicking.rs:357:13
|
357 | &location
| ^^^^^^^^^
| |
| expected struct core::panic::Location, found reference
| help: consider removing the borrow: location
|
= note: expected type core::panic::Location<'_>
found type &core::panic::Location<'_>

error: aborting due to 7 previous errors

Some errors have detailed explanations: E0308, E0432, E0658.
For more information about an error, try rustc --explain E0308.
error: Could not compile sgx_tstd.`

=============================

[uraj]

try rustup default nightly-2019-11-25 before building the code

[shixiongjing]

You are right. I tried nightly when I tried running outside docker earlier and I forgot to switch to nightly in docker...Thanks a lot.