I'm using this shell.nix: https://github.com/paritytech/substrate/blob/master/shell.nix

applied at the root of this project: https://github.com/paritytech/substrate-contracts-node

I executed $ nix-shell then $ cargo build --release

and now I'm running into:

error[E0658]: use of unstable library feature 'proc_macro_is_available'

I'm guessing there's something missing on the shell.nix file?

In reply to @zhaofeng:zhaofeng.li
What does rustc --version show?

In reply to @zhaofeng:zhaofeng.li
What does rustc --version show?

In reply to @zhaofeng:zhaofeng.li
Hmm, that feature should exist in that version of nightly (it was removed a month later, which should cause it to complain that the feature is non-existent). Where is that in the code?

error[E0658]: use of unstable library feature 'proc_macro_is_available'
  --> /home/bear/.cargo/registry/src/github.com-1ecc6299db9ec823/proc-macro2-1.0.36/src/detection.rs:28:21
   |
28 |     let available = proc_macro::is_available();
   |                     ^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: see issue #71436 <https://github.com/rust-lang/rust/issues/71436> for more information
   = help: add `#![feature(proc_macro_is_available)]` to the crate attributes to enable

In reply to @zhaofeng:zhaofeng.li
Ok, try a newer nightly version where this has already stabilized

now I'm trying to build https://github.com/paritytech/canvas with the same shell.nix mentioned before..
running into this:

...
  = note: /nix/store/rbqplhv2s539liymkvm3zbjj9lvgzpd5-binutils-2.35.2/bin/ld: final link failed: No space left on device
          collect2: error: ld returned 1 exit status


LLVM ERROR: IO failure on output stream: No space left on device
The following warnings were emitted during compilation:

pretty confusing, since I do have plenty of space on my disk 🤔

In reply to @bernardo:matrix.parity.io

now I'm trying to build https://github.com/paritytech/canvas with the same shell.nix mentioned before..
running into this:

...
  = note: /nix/store/rbqplhv2s539liymkvm3zbjj9lvgzpd5-binutils-2.35.2/bin/ld: final link failed: No space left on device
          collect2: error: ld returned 1 exit status


LLVM ERROR: IO failure on output stream: No space left on device
The following warnings were emitted during compilation:

pretty confusing, since I do have plenty of space on my disk 🤔

In reply to @mikroskeem:d0.ee
increase its size

ok I think I figured it out... after seeing this error message:

error: failed to write /run/user/1000/rustchcAPeP/lib.rmeta: No space left on device (os error 28)

so I ran:

$ sudo mount -o remount,size=10G /run/user/1000