Broken on most recent nightly

[skade]

I seems like proc_macro_hack broke. Please use rustup override set nightly-2019-08-15 in the meantime.

error: cannot find macro `proc_macro_call_0!` in this scope
   --> src/bin/server.rs:92:9
    |
92  | /         select! {
93  | |             msg = messages.next().fuse() => match msg {
94  | |                 Some(msg) => stream.write_all(msg.as_bytes()).await?,
95  | |                 None => break,
...   |
100 | |             }
101 | |         }
    | |_________^
    |
    = help: have you added the `#[macro_use]` on the module/import?
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

[jamesmunns]

I think this has been fixed in rust-lang/rust#63667

[jamesmunns]

Though not yet fixed in the latest nightly:

james@archx1c6g ➜  a-chat git:(master) rustup show
Default host: x86_64-unknown-linux-gnu

# ...

active toolchain
----------------

nightly-x86_64-unknown-linux-gnu (default)
rustc 1.39.0-nightly (2111aed0a 2019-08-17)

james@archx1c6g ➜  a-chat git:(master) cargo clean && cargo build
# ...
   Compiling async-std v0.99.3
   Compiling a-chat v0.1.0 (/tmp/a-chat)
error: cannot find macro `proc_macro_call_1!` in this scope
  --> src/bin/client.rs:31:9
   |
31 | /         select! {
32 | |             line = lines_from_server.next().fuse() => match line {
33 | |                 Some(line) => {
34 | |                     let line = line?;
...  |
46 | |             }
47 | |         }
   | |_________^
   |
   = help: have you added the `#[macro_use]` on the module/import?
   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

warning: unused import: `futures::FutureExt`
 --> src/bin/client.rs:6:5
  |
6 | use futures::FutureExt;
  |     ^^^^^^^^^^^^^^^^^^
  |
  = note: `#[warn(unused_imports)]` on by default

error: cannot find macro `proc_macro_call_0!` in this scope
   --> src/bin/server.rs:92:9
    |
92  | /         select! {
93  | |             msg = messages.next().fuse() => match msg {
94  | |                 Some(msg) => stream.write_all(msg.as_bytes()).await?,
95  | |                 None => break,
...   |
100 | |             }
101 | |         }
    | |_________^
    |
    = help: have you added the `#[macro_use]` on the module/import?
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: cannot find macro `proc_macro_call_1!` in this scope
   --> src/bin/server.rs:126:21
    |
126 |           let event = select! {
    |  _____________________^
127 | |             event = events.next().fuse() => match event {
128 | |                 None => break,
129 | |                 Some(event) => event,
...   |
135 | |             },
136 | |         };
    | |_________^
    |
    = help: have you added the `#[macro_use]` on the module/import?
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

warning: unreachable expression
  --> src/bin/client.rs:49:5
   |
49 |     Ok(())
   |     ^^^^^^
   |
   = note: `#[warn(unreachable_code)]` on by default

error: aborting due to previous error

error: Could not compile `a-chat`.
warning: build failed, waiting for other jobs to finish...
warning: unreachable statement
   --> src/bin/server.rs:164:5
    |
164 |     drop(peers);
    |     ^^^^^^^^^^^^
    |
    = note: `#[warn(unreachable_code)]` on by default

warning: unreachable expression
   --> src/bin/server.rs:103:5
    |
103 |     Ok(())
    |     ^^^^^^

warning: unused import: `FutureExt`
  --> src/bin/server.rs:12:5
   |
12 |     FutureExt,
   |     ^^^^^^^^^
   |
   = note: `#[warn(unused_imports)]` on by default

error: aborting due to 2 previous errors

error: Could not compile `a-chat`.

To learn more, run the command again with --verbose.
james@archx1c6g ➜  a-chat git:(master)

[jamesmunns]

This has been fixed as of rustc 1.39.0-nightly (4cf767307 2019-08-18).

[morlinbrot]

Doesn't work with that version either:

~/prx/a-chat  add-rust-toolchain-file ✗                                                           10m ⚑  
▶ rustup show
Default host: x86_64-unknown-linux-gnu
...
active toolchain
----------------

nightly-2019-08-18-x86_64-unknown-linux-gnu (overridden by '/home/synul/prx/a-chat/rust-toolchain')
rustc 1.39.0-nightly (2111aed0a 2019-08-17)

▶ cargo build
   Compiling a-chat v0.1.0 (/home/synul/prx/a-chat)
error: cannot find macro `proc_macro_call_1!` in this scope
  --> src/bin/client.rs:31:9
   |
31 | /         select! {
32 | |             line = lines_from_server.next().fuse() => match line {
33 | |                 Some(line) => {
34 | |                     let line = line?;
...  |
46 | |             }
47 | |         }
   | |_________^
   |
   = help: have you added the `#[macro_use]` on the module/import?
   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

warning: unused import: `futures::FutureExt`
 --> src/bin/client.rs:6:5
  |
6 | use futures::FutureExt;
  |     ^^^^^^^^^^^^^^^^^^
  |
  = note: `#[warn(unused_imports)]` on by default

error: cannot find macro `proc_macro_call_0!` in this scope
   --> src/bin/server.rs:92:9
    |
92  | /         select! {
93  | |             msg = messages.next().fuse() => match msg {
94  | |                 Some(msg) => stream.write_all(msg.as_bytes()).await?,
95  | |                 None => break,
...   |
100 | |             }
101 | |         }
    | |_________^
    |
    = help: have you added the `#[macro_use]` on the module/import?
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: cannot find macro `proc_macro_call_1!` in this scope
   --> src/bin/server.rs:126:21
    |
126 |           let event = select! {
    |  _____________________^
127 | |             event = events.next().fuse() => match event {
128 | |                 None => break,
129 | |                 Some(event) => event,
...   |
135 | |             },
136 | |         };
    | |_________^
    |
    = help: have you added the `#[macro_use]` on the module/import?
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

warning: unreachable expression
  --> src/bin/client.rs:49:5
   |
49 |     Ok(())
   |     ^^^^^^
   |
   = note: `#[warn(unreachable_code)]` on by default

error: aborting due to previous error

error: Could not compile `a-chat`.
warning: build failed, waiting for other jobs to finish...
warning: unreachable statement
   --> src/bin/server.rs:164:5
    |
164 |     drop(peers);
    |     ^^^^^^^^^^^^
    |
    = note: `#[warn(unreachable_code)]` on by default

warning: unreachable expression
   --> src/bin/server.rs:103:5
    |
103 |     Ok(())
    |     ^^^^^^

warning: unused import: `FutureExt`
  --> src/bin/server.rs:12:5
   |
12 |     FutureExt,
   |     ^^^^^^^^^
   |
   = note: `#[warn(unused_imports)]` on by default

error: aborting due to 2 previous errors

error: Could not compile `a-chat`.

To learn more, run the command again with --verbose.

[jamesmunns]

@synul you need the toolchain one day newer, 2019-08-19 (built 2019-08-18). You were using 2019-08-18, built on the 17th.

[morlinbrot]

Ah, indeed, the newest version works. I updated my PR with the newer version, not sure if that is still needed though...

[ghost]

I think we can close this since it's been fixed.