build failure with latest nightly

[matthiaskrgr]

rustc 1.29.0-nightly (31f1bc7 2018-07-15)

   Compiling cargo_metadata v0.5.8
   Compiling clippy_lints v0.0.212 (file:///tmp/rust-clippy/clippy_lints)
error[E0369]: binary operation `==` cannot be applied to type `&rustc::hir::PathSegment`ints
   --> clippy_lints/src/utils/hir_utils.rs:121:36
    |
121 |                 !self.ignore_fn && l_path == r_path && self.eq_exprs(l_args, r_args)
    |                                    ^^^^^^^^^^^^^^^^
    |
    = note: an implementation of `std::cmp::PartialEq` might be missing for `&rustc::hir::PathSegment`
error[E0599]: no method named `hash` found for type `rustc::hir::BlockCheckMode` in the current scope
   --> clippy_lints/src/utils/hir_utils.rs:339:17
    |
339 |         b.rules.hash(&mut self.s);
    |                 ^^^^
error[E0599]: no method named `hash` found for type `rustc::hir::CaptureClause` in the current scope
   --> clippy_lints/src/utils/hir_utils.rs:422:21
    |
422 |                 cap.hash(&mut self.s);
    |                     ^^^^
error[E0369]: binary operation `==` cannot be applied to type `rustc::hir::VisibilityKind`
   --> clippy_lints/src/utils/internal_lints.rs:123:49
    |
123 |             } else if is_lint_array_type(ty) && item.vis.node == VisibilityKind::Inherited && item.name == "ARRAY" {
    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: an implementation of `std::cmp::PartialEq` might be missing for `rustc::hir::VisibilityKind`
error[E0369]: binary operation `==` cannot be applied to type `rustc::hir::VisibilityKind`
  --> clippy_lints/src/enum_glob_use.rs:47:12
   |
47 |         if item.vis.node == VisibilityKind::Public {
   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: an implementation of `std::cmp::PartialEq` might be missing for `rustc::hir::VisibilityKind`
error[E0369]: binary operation `==` cannot be applied to type `syntax::ast::VisibilityKind`
   --> clippy_lints/src/enum_variants.rs:265:24
    |
265 |                     if item.vis.node == VisibilityKind::Public {
    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: an implementation of `std::cmp::PartialEq` might be missing for `syntax::ast::VisibilityKind`
error[E0369]: binary operation `==` cannot be applied to type `rustc::hir::PatKind`
  --> clippy_lints/src/if_let_redundant_pattern_matching.rs:51:87
   |
51 |                     PatKind::TupleStruct(ref path, ref pats, _) if pats.len() == 1 && pats[0].node == PatKind::Wild => {
   |                                                                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: an implementation of `std::cmp::PartialEq` might be missing for `rustc::hir::PatKind`
error[E0599]: no method named `ty_to_def_id` found for type `&&rustc::ty::TyS<'_>` in the current scope
   --> clippy_lints/src/len_zero.rs:262:34
    |
262 |             .associated_items(ty.ty_to_def_id().expect("trait impl not found"))
    |                                  ^^^^^^^^^^^^
error[E0599]: no method named `ty_to_def_id` found for type `&&rustc::ty::TyS<'_>` in the current scope
   --> clippy_lints/src/len_zero.rs:264:35
    |
264 |         ty::TyProjection(_) => ty.ty_to_def_id()
    |                                   ^^^^^^^^^^^^
error[E0369]: binary operation `==` cannot be applied to type `&rustc::hir::Expr`
    --> clippy_lints/src/loops.rs:1958:12
     |
1958 |         if expr == self.end_expr {
     |            ^^^^^^^^^^^^^^^^^^^^^
     |
     = note: an implementation of `std::cmp::PartialEq` might be missing for `&rustc::hir::Expr`
error[E0369]: binary operation `==` cannot be applied to type `[rustc::hir::PathSegment]`
   --> clippy_lints/src/map_clone.rs:111:34
    |
111 |             !path.is_global() && path.segments[..] == arg_segment
    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: an implementation of `std::cmp::PartialEq` might be missing for `[rustc::hir::PathSegment]`
error[E0369]: binary operation `==` cannot be applied to type `rustc::hir::PatKind`
   --> clippy_lints/src/matches.rs:224:8
    |
224 |     if arms[1].pats[0].node == PatKind::Wild {
    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: an implementation of `std::cmp::PartialEq` might be missing for `rustc::hir::PatKind`
error[E0369]: binary operation `!=` cannot be applied to type `rustc::hir::PatKind`
   --> clippy_lints/src/matches.rs:268:39
    |
268 |             if inner.iter().any(|pat| pat.node != PatKind::Wild) {
    |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: an implementation of `std::cmp::PartialEq` might be missing for `rustc::hir::PatKind`
error[E0369]: binary operation `==` cannot be applied to type `rustc::hir::PatKind`
   --> clippy_lints/src/matches.rs:367:47
    |
367 |                     if inner.iter().any(|pat| pat.node == PatKind::Wild);
    |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: an implementation of `std::cmp::PartialEq` might be missing for `rustc::hir::PatKind`
error[E0369]: binary operation `==` cannot be applied to type `rustc::hir::VisibilityKind`
   --> clippy_lints/src/methods.rs:843:43
    |
843 |                             let lint = if item.vis.node == hir::VisibilityKind::Public {
    |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: an implementation of `std::cmp::PartialEq` might be missing for `rustc::hir::VisibilityKind`
error[E0369]: binary operation `==` cannot be applied to type `&rustc::hir::Ty`
    --> clippy_lints/src/methods.rs:2050:55
     |
2050 |         let is_actually_self = |ty| is_self_ty(ty) || ty == self_ty;
     |                                                       ^^^^^^^^^^^^^
     |
     = note: an implementation of `std::cmp::PartialEq` might be missing for `&rustc::hir::Ty`
error[E0369]: binary operation `==` cannot be applied to type `rustc::hir::Ty_`
    --> clippy_lints/src/methods.rs:2179:54
     |
2179 |             (OutType::Unit, &hir::Return(ref ty)) if ty.node == hir::TyTup(vec![].into()) => true,
     |                                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     |
     = note: an implementation of `std::cmp::PartialEq` might be missing for `rustc::hir::Ty_`
error[E0369]: binary operation `!=` cannot be applied to type `rustc::hir::Ty_`
    --> clippy_lints/src/methods.rs:2181:53
     |
2181 |             (OutType::Any, &hir::Return(ref ty)) if ty.node != hir::TyTup(vec![].into()) => true,
     |                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     |
     = note: an implementation of `std::cmp::PartialEq` might be missing for `rustc::hir::Ty_`
error[E0369]: binary operation `==` cannot be applied to type `rustc::hir::PatKind`
   --> clippy_lints/src/misc.rs:421:16
    |
421 |             if right.node == PatKind::Wild {
    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: an implementation of `std::cmp::PartialEq` might be missing for `rustc::hir::PatKind`
error[E0369]: binary operation `==` cannot be applied to type `rustc::hir::Expr`
   --> clippy_lints/src/misc.rs:545:69
    |
545 |             ExprAssign(_, ref rhs) | ExprAssignOp(_, _, ref rhs) => **rhs == *expr,
    |                                                                     ^^^^^^^^^^^^^^
    |
    = note: an implementation of `std::cmp::PartialEq` might be missing for `rustc::hir::Expr`
error[E0369]: binary operation `==` cannot be applied to type `syntax::ast::PatKind`
   --> clippy_lints/src/misc_early.rs:216:20
    |
216 |                 if field.node.pat.node == PatKind::Wild {
    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: an implementation of `std::cmp::PartialEq` might be missing for `syntax::ast::PatKind`
error[E0369]: binary operation `!=` cannot be applied to type `syntax::ast::PatKind`
   --> clippy_lints/src/misc_early.rs:234:24
    |
234 |                     if field.node.pat.node != PatKind::Wild {
    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: an implementation of `std::cmp::PartialEq` might be missing for `syntax::ast::PatKind`
error[E0369]: binary operation `==` cannot be applied to type `syntax::ast::PatKind`
   --> clippy_lints/src/misc_early.rs:241:24
    |
241 |                     if field.node.pat.node == PatKind::Wild {
    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: an implementation of `std::cmp::PartialEq` might be missing for `syntax::ast::PatKind`
error[E0369]: binary operation `==` cannot be applied to type `rustc::hir::PathSegment`
  --> clippy_lints/src/overflow_check_conditional.rs:40:16
   |
40 |             if path1.segments[0] == path3.segments[0] || path2.segments[0] == path3.segments[0];
   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: an implementation of `std::cmp::PartialEq` might be missing for `rustc::hir::PathSegment`
error[E0369]: binary operation `==` cannot be applied to type `rustc::hir::PathSegment`
  --> clippy_lints/src/overflow_check_conditional.rs:40:58
   |
40 |             if path1.segments[0] == path3.segments[0] || path2.segments[0] == path3.segments[0];
   |                                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: an implementation of `std::cmp::PartialEq` might be missing for `rustc::hir::PathSegment`
error[E0369]: binary operation `==` cannot be applied to type `rustc::hir::PathSegment`
  --> clippy_lints/src/overflow_check_conditional.rs:65:16
   |
65 |             if path1.segments[0] == path3.segments[0] || path2.segments[0] == path3.segments[0];
   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: an implementation of `std::cmp::PartialEq` might be missing for `rustc::hir::PathSegment`
error[E0369]: binary operation `==` cannot be applied to type `rustc::hir::PathSegment`
  --> clippy_lints/src/overflow_check_conditional.rs:65:58
   |
65 |             if path1.segments[0] == path3.segments[0] || path2.segments[0] == path3.segments[0];
   |                                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: an implementation of `std::cmp::PartialEq` might be missing for `rustc::hir::PathSegment`
error[E0369]: binary operation `==` cannot be applied to type `syntax::ptr::P<[rustc::hir::PathSegment]>`
   --> clippy_lints/src/ranges.rs:121:24
    |
121 |                     if iter_path.segments == len_path.segments;
    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: an implementation of `std::cmp::PartialEq` might be missing for `syntax::ptr::P<[rustc::hir::PathSegment]>`
error: aborting due to 28 previous errors
Some errors occurred: E0369, E0599.
For more information about an error, try `rustc --explain E0369`.
error: Could not compile `clippy_lints`.
To learn more, run the command again with --verbose.

Caused by rust-lang/rust#51829. Looks like Oli already has a fix.

[mati865]

Master branch fails to build on latest nightly so how is it possible clippy-preview still works?

$ rustc -V
rustc 1.29.0-nightly (31f1bc7b4 2018-07-15)
$ ~/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/bin/cargo-clippy
[warnings, errors, everything you would expect from working clippy]

[oli-obk]

Because there are only nightlies if clippy works ;) And we have a rustup branch that works and rustc points to that

[mati865]

I know about nightly blocking and I wondering why it wasn't blocked and then found clippy-preview still works.

Totally forgot rust points to rustup branch instead of master right now 🤦‍♂️