ICE: derive(Clone) on trait item or impl item

[Armavica]

The following code:

trait Foo {
    #[derive(Clone)]
    type Bar;
}

produces the following compilation output:

$ RUST_BACKTRACE=1 cargo build
   Compiling bug v0.1.0 (file:///home/virgile/bug)
error: internal compiler error: #[derive(Clone)] on trait item or impl item
 --> src/main.rs:2:14
  |
2 |     #[derive(Clone)]
  |              ^^^^^

note: the compiler unexpectedly panicked. this is a bug.

note: we would appreciate a bug report: https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md#bug-reports

note: rustc 1.22.1 (05e2e1c41 2017-11-22) running on x86_64-unknown-linux-gnu

note: run with `RUST_BACKTRACE=1` for a backtrace

thread 'rustc' panicked at 'Box<Any>', /checkout/src/librustc_errors/lib.rs:439:8
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
stack backtrace:
   0: std::sys::imp::backtrace::tracing::imp::unwind_backtrace
             at /checkout/src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
   1: std::sys_common::backtrace::_print
             at /checkout/src/libstd/sys_common/backtrace.rs:69
   2: std::panicking::default_hook::{{closure}}
             at /checkout/src/libstd/sys_common/backtrace.rs:58
             at /checkout/src/libstd/panicking.rs:381
   3: std::panicking::default_hook
             at /checkout/src/libstd/panicking.rs:391
   4: std::panicking::rust_panic_with_hook
             at /checkout/src/libstd/panicking.rs:577
   5: std::panicking::begin_panic
   6: rustc_errors::Handler::span_bug
   7: syntax::ext::base::ExtCtxt::span_bug
   8: syntax_ext::deriving::clone::expand_deriving_clone
   9: syntax::ext::expand::MacroExpander::expand_invoc
  10: syntax::ext::expand::MacroExpander::expand
  11: syntax::ext::expand::MacroExpander::expand_crate
  12: rustc_driver::driver::phase_2_configure_and_expand::{{closure}}
  13: rustc_driver::driver::phase_2_configure_and_expand
  14: rustc_driver::driver::compile_input
  15: rustc_driver::run_compiler

error: Could not compile `bug`.

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

Rust version:

$ rustc --version --verbose
rustc 1.22.1 (05e2e1c41 2017-11-22)
binary: rustc
commit-hash: 05e2e1c41414e8fc73d0f267ea8dab1a3eeeaa99
commit-date: 2017-11-22
host: x86_64-unknown-linux-gnu
release: 1.22.1
LLVM version: 4.0

[kennytm]

(The ICE is introduced in 1.20. There is no ICE in 1.19.)