[~] (master)$ ./mach build -d
   Compiling script v0.0.1 (file:///Users/nirav/workspaces/servo/components/script)
error[E0277]: the trait bound `dom::bindings::root::Root<dom::bindings::root::Dom<dom::node::Node>>: serde::Serialize` is not satisfied
    --> components/script/dom/document.rs:1822:24
     |
1822 |             let json = serde_json::to_string(&element);
     |                        ^^^^^^^^^^^^^^^^^^^^^ the trait `serde::Serialize` is not implemented for `dom::bindings::root::Root<dom::bindings::root::Dom<dom::node::Node>>`
     |
     = note: required by `serde_json::to_string`

error: aborting due to previous error

error: Could not compile `script`.

To learn more, run the command again with --verbose.
Build FAILED in 0:00:44