Fails to build with rustc 1.20.0-nightly (067971139 2017-07-02)

[Frederick888]

Trying to install clippy with rustup in Linux and got this:

$ cargo install clippy -f
    Updating registry `https://github.com/rust-lang/crates.io-index`
  Installing clippy v0.0.141
  Compiling semver-parser v0.7.0
  Compiling unicode-xid v0.0.4
  Compiling quine-mc_cluskey v0.2.4
  Compiling serde v1.0.9
  Compiling either v1.1.0
  Compiling lazy_static v0.2.8
  Compiling quote v0.3.15
  Compiling dtoa v0.4.1
  Compiling itoa v0.3.1
  Compiling unicode-normalization v0.1.5
  Compiling num-traits v0.1.39
  Compiling regex-syntax v0.4.1
  Compiling matches v0.1.6
  Compiling synom v0.11.3
  Compiling itertools v0.6.0
  Compiling syn v0.11.11
  Compiling semver v0.6.0
  Compiling serde_json v1.0.2
  Compiling toml v0.4.2
  Compiling serde_derive_internals v0.15.1
  Compiling serde_derive v1.0.9
  Compiling clippy_lints v0.0.141
  Compiling cargo_metadata v0.2.1
  Compiling clippy v0.0.141
error[E0369]: binary operation `>` cannot be applied to type `rustc::session::CompileIncomplete`
  --> /home/frederick/.cargo/registry/src/mygithub.libinneed.workers.dev-1ecc6299db9ec823/clippy-0.0.141/src/main.rs:282:20
    |
282 |                 if err_count > 0 {
    |                    ^^^^^^^^^^^^^
    |
    = note: an implementation of `std::cmp::PartialOrd` might be missing for `rustc::session::CompileIncomplete`

error: aborting due to previous error

error: failed to compile `clippy v0.0.141`, intermediate artifacts can be found at `/tmp/cargo-install.NzDKy1P9xxuM`

Caused by:
  Could not compile `clippy`.

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

$ rustc --version
rustc 1.20.0-nightly (067971139 2017-07-02)

$ cargo --version 
cargo 0.21.0-nightly (4c0a8b63d 2017-06-27)

Caused by rust-lang/rust#43015 ?