yancouto/rlua-builders

Helpers to generate lua functions that return rust objects using rlua.

rlua-builders's Issues

Crate only works with rlua version 0.17

When attempting to build a trivial project based on coping and pasting the example from the documentation, cargo check fails with:

    Checking rlua-build v0.1.0 (/rlua-build)
error[E0277]: the trait bound `Person: rlua::userdata::UserData` is not satisfied
  --> src/main.rs:3:10
   |
3  | #[derive(LuaBuilder, UserData, Clone, PartialEq, Debug)]
   |          ^^^^^^^^^^ the trait `rlua::userdata::UserData` is not implemented for `Person`
   |
note: required by a bound in `LuaBuilder`
  --> /rlua-build/.cargo/registry/src/github.com-1ecc6299db9ec823/rlua-builders-0.1.4/src/lib.rs:95:41
   |
95 | pub trait LuaBuilder<'s, T: ToLua<'s>>: UserData + Clone {
   |                                         ^^^^^^^^ required by this bound in `LuaBuilder`
   = note: this error originates in the derive macro `LuaBuilder` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0277]: the trait bound `LuaFunction<'s>: rlua::userdata::UserData` is not satisfied
  --> src/main.rs:3:10
   |
3  | #[derive(LuaBuilder, UserData, Clone, PartialEq, Debug)]
   |          ^^^^^^^^^^ the trait `rlua::userdata::UserData` is not implemented for `LuaFunction<'s>`
   |
   = note: required because of the requirements on the impl of `rlua::value::ToLua<'s>` for `LuaFunction<'s>`
note: required by a bound in `LuaBuilder`
  --> /rlua-build/.cargo/registry/src/github.com-1ecc6299db9ec823/rlua-builders-0.1.4/src/lib.rs:95:29
   |
95 | pub trait LuaBuilder<'s, T: ToLua<'s>>: UserData + Clone {
   |                             ^^^^^^^^^ required by this bound in `LuaBuilder`
   = note: this error originates in the derive macro `LuaBuilder` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0277]: `*mut rlua_lua54_sys::bindings::lua_State` cannot be sent between threads safely
  --> src/main.rs:3:10
   |
3  | #[derive(LuaBuilder, UserData, Clone, PartialEq, Debug)]
   |          ^^^^^^^^^^ `*mut rlua_lua54_sys::bindings::lua_State` cannot be sent between threads safely
   |
   = help: within `LuaFunction<'s>`, the trait `Send` is not implemented for `*mut rlua_lua54_sys::bindings::lua_State`
   = note: required because it appears within the type `LuaContext<'s>`
   = note: required because it appears within the type `rlua::types::LuaRef<'s>`
   = note: required because it appears within the type `LuaFunction<'s>`
   = note: required because of the requirements on the impl of `rlua::value::ToLua<'s>` for `LuaFunction<'s>`
note: required by a bound in `LuaBuilder`
  --> /rlua-build/.cargo/registry/src/github.com-1ecc6299db9ec823/rlua-builders-0.1.4/src/lib.rs:95:29
   |
95 | pub trait LuaBuilder<'s, T: ToLua<'s>>: UserData + Clone {
   |                             ^^^^^^^^^ required by this bound in `LuaBuilder`
   = note: this error originates in the derive macro `LuaBuilder` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0277]: `*mut PhantomData<UnsafeCell<()>>` cannot be sent between threads safely
  --> src/main.rs:3:10
   |
3  | #[derive(LuaBuilder, UserData, Clone, PartialEq, Debug)]
   |          ^^^^^^^^^^ `*mut PhantomData<UnsafeCell<()>>` cannot be sent between threads safely
   |
   = help: within `LuaFunction<'s>`, the trait `Send` is not implemented for `*mut PhantomData<UnsafeCell<()>>`
   = note: required because it appears within the type `PhantomData<*mut PhantomData<UnsafeCell<()>>>`
   = note: required because it appears within the type `LuaContext<'s>`
   = note: required because it appears within the type `rlua::types::LuaRef<'s>`
   = note: required because it appears within the type `LuaFunction<'s>`
   = note: required because of the requirements on the impl of `rlua::value::ToLua<'s>` for `LuaFunction<'s>`
note: required by a bound in `LuaBuilder`
  --> /rlua-build/.cargo/registry/src/github.com-1ecc6299db9ec823/rlua-builders-0.1.4/src/lib.rs:95:29
   |
95 | pub trait LuaBuilder<'s, T: ToLua<'s>>: UserData + Clone {
   |                             ^^^^^^^^^ required by this bound in `LuaBuilder`
   = note: this error originates in the derive macro `LuaBuilder` (in Nightly builds, run with -Z macro-backtrace for more info)

For more information about this error, try `rustc --explain E0277`.
error: could not compile `rlua-build` due to 4 previous errors

Using rlua 0.17.0 or 0.17.1 seems to make the build succeed. Newer, as well as older, rlua versions fail. I have not made any attempts at understanding the cause of the error.