lang: Fix remaining_accounts for interface attribute CPIs (#596)

lang/attribute/interface/src/lib.rs

@@ -197,7 +197,7 @@ pub fn interface(
             let sighash_tts: proc_macro2::TokenStream =
                 format!("{:?}", sighash_arr).parse().unwrap();
             quote! {
-                pub fn #method_name<'a,'b, 'c, 'info, T: anchor_lang::ToAccountMetas + anchor_lang::ToAccountInfos<'info>>(
+                pub fn #method_name<'a,'b, 'c, 'info, T: anchor_lang::Accounts<'info> + anchor_lang::ToAccountMetas + anchor_lang::ToAccountInfos<'info>>(
                     ctx: anchor_lang::CpiContext<'a, 'b, 'c, 'info, T>,
                     #(#args),*
                 ) -> anchor_lang::solana_program::entrypoint::ProgramResult {
@@ -211,14 +211,14 @@ pub fn interface(
                             .map_err(|_| anchor_lang::__private::ErrorCode::InstructionDidNotSerialize)?;
                         let mut data = #sighash_tts.to_vec();
                         data.append(&mut ix_data);
-                        let accounts = ctx.accounts.to_account_metas(None);
+                        let accounts = ctx.to_account_metas(None);
                         anchor_lang::solana_program::instruction::Instruction {
                             program_id: *ctx.program.key,
                             accounts,
                             data,
                         }
                     };
-                    let mut acc_infos = ctx.accounts.to_account_infos();
+                    let mut acc_infos = ctx.to_account_infos();
                     acc_infos.push(ctx.program.clone());
                     anchor_lang::solana_program::program::invoke_signed(
                         &ix,