Diesel macro error

Cargo.toml

[package]
name = "notehub"
version = "0.1.0"
authors = ["Mitja Karhusaari <monttu300@gmail.com>"]

[dependencies]
diesel = { git = "https://github.com/diesel-rs/diesel.git" }
diesel_codegen = { git = "https://github.com/diesel-rs/diesel.git" }
diesel_codegen_syntex = { git = "https://github.com/diesel-rs/diesel.git" }
custom_derive = "*" # Cargo.lock: 0.1.5

cargo_build.out

    Updating git repository `https://github.com/diesel-rs/diesel.git 
    Updating git repository `https://github.com/diesel-rs/diesel.git`
    Updating git repository `https://github.com/diesel-rs/diesel.git`
    Updating registry `https://github.com/rust-lang/crates.io-index`
 Downloading custom_derive v0.1.5
 Downloading syntex_syntax v0.42.0
 Downloading syntex v0.42.2
 Downloading syntex_errors v0.42.0
 Downloading syntex_pos v0.42.0
 Downloading unicode-xid v0.0.3
 Downloading term v0.4.4
 Downloading rustc-serialize v0.3.19
 Downloading bitflags v0.5.0
 Downloading log v0.3.6
 Downloading diesel_codegen_syntex v0.7.2
   Compiling winapi-build v0.1.1
   Compiling unicode-xid v0.0.3
   Compiling rustc-serialize v0.3.19
   Compiling bitflags v0.5.0
   Compiling winapi v0.2.8
   Compiling log v0.3.6
   Compiling kernel32-sys v0.2.2
   Compiling term v0.4.4
   Compiling syntex_pos v0.42.0
   Compiling syntex_errors v0.42.0
   Compiling syntex_syntax v0.42.0
   Compiling syntex v0.42.2
   Compiling diesel_codegen_syntex v0.7.2 (https://github.com/diesel-rs/diesel.git#8b418701)
   Compiling notehub v0.1.0 (file:///source)
error: expected ident, found ,
  --> <diesel macros>:21:25
   |
21 | Identifiable ! { $ args , fields = [ $ ( $ fields ) * ] , } } ; (
   |                         ^

error: Could not compile `notehub`.

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

models.rs

custom_derive! {
    #[derive(Identifiable)]
    //#[derive(Queryable, Identifiable, Debug, HasMany(notebook_shares, foreign_key = notebook_id))]
    #[table_name(notebooks)]
    pub struct Notebook {
        pub id: i32,
        pub name: String,
        pub description: Option<String>,
        pub public: bool,
        pub owner: i32,
        pub tags: Vector<String>,
        pub created_at: PgTimestamp
    }
}