Link errors when using rustc-serialize from a plugin?

[ArtemGr]

Let's say I have a bare-bones plugin

#![crate_name="json_macros"]
#![feature(plugin_registrar, quote)]
#![allow(unstable)]

extern crate rustc;
extern crate syntax;
//extern crate "rustc-serialize" as rustc_serialize;

use syntax::ast::TokenTree;
use syntax::codemap::Span;
use syntax::ext::base::{ExtCtxt, MacResult, DummyResult};
use rustc::plugin::Registry;

#[plugin_registrar]
pub fn plugin_registrar(reg: &mut Registry) {
    reg.register_macro("json", expand);
}

fn expand<'cx>(_: &'cx mut ExtCtxt, sp: Span,
               _: &[TokenTree]) -> Box<MacResult + 'cx> {
    return DummyResult::expr(sp);
}

used in my program. If I add an extern crate "rustc-serialize" as rustc_serialize; line to it I get a linking problem:

root@boot2docker(Docker):/tmp/test-case$ cargo build
   Compiling json_macros v0.1.2 (file:///tmp/test-case)
   Compiling err v0.0.1 (file:///tmp/test-case)
error: linking with `cc` failed: exit code: 1
note: cc '-Wl,--as-needed' '-m64' '-L' '/usr/local/lib/rustlib/x86_64-unknown-linux-gnu/lib' '-o' '/tmp/test-case/target/test' '/tmp/test-case/target/test.o' '-Wl,--whole-archive' '-lmorestack' '-Wl,--no-whole-archive' '-Wl,--gc-sections' '-pie' '-nodefaultlibs' '-L' '/tmp/test-case/target/deps' '-ljson_macros-4df5f724b343b7dd' '-L' '/usr/local/lib/rustlib/x86_64-unknown-linux-gnu/lib' '-lrustc-4e7c5e5c' '-L' '/usr/local/lib/rustlib/x86_64-unknown-linux-gnu/lib' '-lrustc_back-4e7c5e5c' '-L' '/usr/local/lib/rustlib/x86_64-unknown-linux-gnu/lib' '-lsyntax-4e7c5e5c' '-L' '/usr/local/lib/rustlib/x86_64-unknown-linux-gnu/lib' '-lfmt_macros-4e7c5e5c' '-L' '/usr/local/lib/rustlib/x86_64-unknown-linux-gnu/lib' '-lgraphviz-4e7c5e5c' '-L' '/usr/local/lib/rustlib/x86_64-unknown-linux-gnu/lib' '-lflate-4e7c5e5c' '-L' '/usr/local/lib/rustlib/x86_64-unknown-linux-gnu/lib' '-larena-4e7c5e5c' '-L' '/usr/local/lib/rustlib/x86_64-unknown-linux-gnu/lib' '-lgetopts-4e7c5e5c' '-L' '/usr/local/lib/rustlib/x86_64-unknown-linux-gnu/lib' '-lterm-4e7c5e5c' '-L' '/usr/local/lib/rustlib/x86_64-unknown-linux-gnu/lib' '-lrbml-4e7c5e5c' '-L' '/usr/local/lib/rustlib/x86_64-unknown-linux-gnu/lib' '-lserialize-4e7c5e5c' '-L' '/usr/local/lib/rustlib/x86_64-unknown-linux-gnu/lib' '-llog-4e7c5e5c' '-L' '/usr/local/lib/rustlib/x86_64-unknown-linux-gnu/lib' '-lregex-4e7c5e5c' '-L' '/usr/local/lib/rustlib/x86_64-unknown-linux-gnu/lib' '-lrustc_llvm-4e7c5e5c' '-L' '/usr/local/lib/rustlib/x86_64-unknown-linux-gnu/lib' '-lstd-4e7c5e5c' '-L' '/tmp/test-case/target' '-L' '/tmp/test-case/target/deps' '-L' '/usr/local/lib/rustlib/x86_64-unknown-linux-gnu/lib' '-L' '/tmp/test-case/.rust/lib/x86_64-unknown-linux-gnu' '-L' '/tmp/test-case/lib/x86_64-unknown-linux-gnu' '-Wl,--whole-archive' '-Wl,-Bstatic' '-Wl,--no-whole-archive' '-Wl,-Bdynamic' '-lpthread' '-lrt' '-ldl' '-lm' '-ldl' '-lpthread' '-lrt' '-lgcc_s' '-lpthread' '-lc' '-lm' '-lcompiler-rt'
note: /tmp/test-case/target/test.o: In function `test::main':
/tmp/test-case/test.rs:10: undefined reference to `json::Json::from_str::h04331c517e0d1e39hLg'
/tmp/test-case/target/test.o: In function `result::Result$LT$T$C$$u{20}E$GT$::unwrap::h14896951616154145496':
test.0.rs:(.text._ZN6result25Result$LT$T$C$$u{20}E$GT$6unwrap21h14896951616154145496E+0x1e4): undefined reference to `json::ParserError...std..fmt..Show::fmt::hd963556d3347d834qTe'
collect2: error: ld returned 1 exit status

error: aborting due to previous error
Could not compile `err`.

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

Not sure if it's a Rust issue or a package issue?
Rust version is rustc 1.0.0-nightly (f4f10dba2 2015-01-17 20:31:08 +0000).
Here's a test case https://gist.github.com/ArtemGr/96f45adaf2e16f3e16d4 which can be easily converted to a fully local one by replacing version = "*" with path = "json_macros" in Cargo.toml.

cf. tomjakubowski/json_macros#12

[alexcrichton]

Reproduced locally, and I think all you need is #[no_link] on the extern crate json_macros (wouldn't want to link in a plugin!)

[ArtemGr]

Oh, gosh! Didn't know that. Thanks!