Rustdoc regression in synstructure: error[E0275]: overflow evaluating the requirement `alloc::raw_vec::RawVec<(syn::Lifetime, syn::token::Add)>: std::marker::Unpin` #62132

SimonSapin · 2019-06-25T21:56:54Z

In a minified package:

[package]
name = "foo"
version = "0.0.0"

[dependencies]
syn = { version = "=0.15.38", features = ["full"] }
synstructure = "=0.10.2"

Running rustup run --install nightly-2019-06-21 cargo doc completes successfully, but rustup run --install nightly-2019-06-22 cargo doc causes the error below. Note that cargo build or cargo check succeeds with either version.

Regression range: 1d9981f...929b48e. #60293 is in the range and looks relevant. CC @nagisa, @eddyb

error[E0275]: overflow evaluating the requirement `alloc::raw_vec::RawVec<(syn::Lifetime, syn::token::Add)>: std::marker::Unpin`
  |
  = help: consider adding a `#![recursion_limit="128"]` attribute to your crate
  = note: required because it appears within the type `std::vec::Vec<(syn::Lifetime, syn::token::Add)>`
  = note: required because it appears within the type `syn::punctuated::Punctuated<syn::Lifetime, syn::token::Add>`
  = note: required because it appears within the type `syn::LifetimeDef`
  = note: required because it appears within the type `(syn::LifetimeDef, syn::token::Comma)`
  = note: required because it appears within the type `*const (syn::LifetimeDef, syn::token::Comma)`
  = note: required because it appears within the type `std::ptr::Unique<(syn::LifetimeDef, syn::token::Comma)>`
  = note: required because it appears within the type `alloc::raw_vec::RawVec<(syn::LifetimeDef, syn::token::Comma)>`
  = note: required because it appears within the type `std::vec::Vec<(syn::LifetimeDef, syn::token::Comma)>`
  = note: required because it appears within the type `syn::punctuated::Punctuated<syn::LifetimeDef, syn::token::Comma>`
  = note: required because it appears within the type `syn::BoundLifetimes`
  = note: required because it appears within the type `std::option::Option<syn::BoundLifetimes>`
  = note: required because it appears within the type `syn::PredicateType`
  = note: required because it appears within the type `syn::WherePredicate`
  = note: required because it appears within the type `(syn::WherePredicate, syn::token::Comma)`
  = note: required because it appears within the type `*const (syn::WherePredicate, syn::token::Comma)`
  = note: required because it appears within the type `std::ptr::Unique<(syn::WherePredicate, syn::token::Comma)>`
  = note: required because it appears within the type `alloc::raw_vec::RawVec<(syn::WherePredicate, syn::token::Comma)>`
  = note: required because it appears within the type `std::vec::Vec<(syn::WherePredicate, syn::token::Comma)>`
  = note: required because it appears within the type `syn::punctuated::Punctuated<syn::WherePredicate, syn::token::Comma>`
  = note: required because it appears within the type `syn::WhereClause`
  = note: required because it appears within the type `std::option::Option<syn::WhereClause>`
  = note: required because it appears within the type `syn::Generics`
  = note: required because it appears within the type `syn::ItemType`
  = note: required because it appears within the type `syn::Item`
  = note: required because it appears within the type `syn::Stmt`
  = note: required because it appears within the type `*const syn::Stmt`
  = note: required because it appears within the type `std::ptr::Unique<syn::Stmt>`
  = note: required because it appears within the type `alloc::raw_vec::RawVec<syn::Stmt>`
  = note: required because it appears within the type `std::vec::Vec<syn::Stmt>`
  = note: required because it appears within the type `syn::Block`
  = note: required because it appears within the type `syn::ExprIf`
  = note: required because it appears within the type `syn::Expr`
  = note: required because it appears within the type `syn::TypeArray`
  = note: required because it appears within the type `syn::Type`
  = note: required because it appears within the type `syn::GenericArgument`
  = note: required because it appears within the type `(syn::GenericArgument, syn::token::Comma)`
  = note: required because it appears within the type `*const (syn::GenericArgument, syn::token::Comma)`
  = note: required because it appears within the type `std::ptr::Unique<(syn::GenericArgument, syn::token::Comma)>`
  = note: required because it appears within the type `alloc::raw_vec::RawVec<(syn::GenericArgument, syn::token::Comma)>`
  = note: required because it appears within the type `std::vec::Vec<(syn::GenericArgument, syn::token::Comma)>`
  = note: required because it appears within the type `syn::punctuated::Punctuated<syn::GenericArgument, syn::token::Comma>`
  = note: required because it appears within the type `syn::AngleBracketedGenericArguments`
  = note: required because it appears within the type `syn::PathArguments`
  = note: required because it appears within the type `syn::PathSegment`
  = note: required because it appears within the type `(syn::PathSegment, syn::token::Colon2)`
  = note: required because it appears within the type `*const (syn::PathSegment, syn::token::Colon2)`
  = note: required because it appears within the type `std::ptr::Unique<(syn::PathSegment, syn::token::Colon2)>`
  = note: required because it appears within the type `alloc::raw_vec::RawVec<(syn::PathSegment, syn::token::Colon2)>`
  = note: required because it appears within the type `std::vec::Vec<(syn::PathSegment, syn::token::Colon2)>`
  = note: required because it appears within the type `syn::punctuated::Punctuated<syn::PathSegment, syn::token::Colon2>`
  = note: required because it appears within the type `syn::Path`
  = note: required because it appears within the type `syn::Attribute`
  = note: required because it appears within the type `*const syn::Attribute`
  = note: required because it appears within the type `std::ptr::Unique<syn::Attribute>`
  = note: required because it appears within the type `alloc::raw_vec::RawVec<syn::Attribute>`
  = note: required because it appears within the type `std::vec::Vec<syn::Attribute>`
  = note: required because it appears within the type `syn::TypeParam`
  = note: required because it appears within the type `syn::GenericParam`
  = note: required because it appears within the type `*const syn::GenericParam`
  = note: required because it appears within the type `std::ptr::Unique<syn::GenericParam>`
  = note: required because it appears within the type `alloc::raw_vec::RawVec<syn::GenericParam>`
  = note: required because it appears within the type `std::vec::Vec<syn::GenericParam>`
  = note: required because it appears within the type `Structure<'a>`

error: aborting due to previous error

For more information about this error, try `rustc --explain E0275`.
error: Could not document `synstructure`.

The text was updated successfully, but these errors were encountered:

nagisa · 2019-06-25T21:58:53Z

Duplicate of #62059. Thanks.

See rust-lang/rust#62132 and rust-lang/rust#62059 The fix in rustdoc is at the “investigating the feasibility” stage, and this is preventing Servo from upgrading its Rust toolchain.

In current Nightly, `cargo doc` fails with the error message below. The fix in rustdoc is at the “investigating the feasibility” stage. See rust-lang/rust#62132 and rust-lang/rust#62059 ``` error[E0275]: overflow evaluating the requirement `proc_macro2::Group: std::marker::Unpin` | = help: consider adding a `#![recursion_limit="128"]` attribute to your crate = note: required because it appears within the type `proc_macro2::TokenTree` = note: required because it appears within the type `*const proc_macro2::TokenTree` = note: required because it appears within the type `std::ptr::Unique<proc_macro2::TokenTree>` = note: required because it appears within the type `alloc::raw_vec::RawVec<proc_macro2::TokenTree>` = note: required because it appears within the type `std::vec::Vec<proc_macro2::TokenTree>` = note: required because it appears within the type `proc_macro2::fallback::TokenStream` = note: required because it appears within the type `proc_macro2::imp::TokenStream` = note: required because it appears within the type `proc_macro2::TokenStream` = note: required because it appears within the type `syn::Macro` = note: required because it appears within the type `syn::PatMacro` = note: required because it appears within the type `syn::Pat` = note: required because it appears within the type `(syn::Pat, syn::token::Or)` = note: required because it appears within the type `*const (syn::Pat, syn::token::Or)` = note: required because it appears within the type `std::ptr::Unique<(syn::Pat, syn::token::Or)>` = note: required because it appears within the type `alloc::raw_vec::RawVec<(syn::Pat, syn::token::Or)>` = note: required because it appears within the type `std::vec::Vec<(syn::Pat, syn::token::Or)>` = note: required because it appears within the type `syn::punctuated::Punctuated<syn::Pat, syn::token::Or>` = note: required because it appears within the type `syn::ExprLet` = note: required because it appears within the type `syn::Expr` = note: required because it appears within the type `syn::TypeArray` = note: required because it appears within the type `syn::Type` = note: required because it appears within the type `syn::GenericArgument` = note: required because it appears within the type `(syn::GenericArgument, syn::token::Comma)` = note: required because it appears within the type `*const (syn::GenericArgument, syn::token::Comma)` = note: required because it appears within the type `std::ptr::Unique<(syn::GenericArgument, syn::token::Comma)>` = note: required because it appears within the type `alloc::raw_vec::RawVec<(syn::GenericArgument, syn::token::Comma)>` = note: required because it appears within the type `std::vec::Vec<(syn::GenericArgument, syn::token::Comma)>` = note: required because it appears within the type `syn::punctuated::Punctuated<syn::GenericArgument, syn::token::Comma>` = note: required because it appears within the type `syn::AngleBracketedGenericArguments` = note: required because it appears within the type `syn::PathArguments` = note: required because it appears within the type `syn::PathSegment` = note: required because it appears within the type `(syn::PathSegment, syn::token::Colon2)` = note: required because it appears within the type `*const (syn::PathSegment, syn::token::Colon2)` = note: required because it appears within the type `std::ptr::Unique<(syn::PathSegment, syn::token::Colon2)>` = note: required because it appears within the type `alloc::raw_vec::RawVec<(syn::PathSegment, syn::token::Colon2)>` = note: required because it appears within the type `std::vec::Vec<(syn::PathSegment, syn::token::Colon2)>` = note: required because it appears within the type `syn::punctuated::Punctuated<syn::PathSegment, syn::token::Colon2>` = note: required because it appears within the type `syn::Path` = note: required because it appears within the type `syn::Attribute` = note: required because it appears within the type `*const syn::Attribute` = note: required because it appears within the type `std::ptr::Unique<syn::Attribute>` = note: required because it appears within the type `alloc::raw_vec::RawVec<syn::Attribute>` = note: required because it appears within the type `std::vec::Vec<syn::Attribute>` = note: required because it appears within the type `syn::LifetimeDef` = note: required because it appears within the type `(syn::LifetimeDef, syn::token::Comma)` = note: required because it appears within the type `*const (syn::LifetimeDef, syn::token::Comma)` = note: required because it appears within the type `std::ptr::Unique<(syn::LifetimeDef, syn::token::Comma)>` = note: required because it appears within the type `alloc::raw_vec::RawVec<(syn::LifetimeDef, syn::token::Comma)>` = note: required because it appears within the type `std::vec::Vec<(syn::LifetimeDef, syn::token::Comma)>` = note: required because it appears within the type `syn::punctuated::Punctuated<syn::LifetimeDef, syn::token::Comma>` = note: required because it appears within the type `syn::BoundLifetimes` = note: required because it appears within the type `std::option::Option<syn::BoundLifetimes>` = note: required because it appears within the type `syn::PredicateType` = note: required because it appears within the type `syn::WherePredicate` = note: required because it appears within the type `*const syn::WherePredicate` = note: required because it appears within the type `std::ptr::Unique<syn::WherePredicate>` = note: required because it appears within the type `alloc::raw_vec::RawVec<syn::WherePredicate>` = note: required because it appears within the type `std::vec::Vec<syn::WherePredicate>` = note: required because it appears within the type `std::option::Option<std::vec::Vec<syn::WherePredicate>>` = note: required because it appears within the type `attr::InputClone` = note: required because it appears within the type `std::option::Option<attr::InputClone>` = note: required because it appears within the type `attr::Input` = note: required because it appears within the type `ast::Input<'a>` error: aborting due to previous error For more information about this error, try `rustc --explain E0275`. error: Could not document `derivative`. ```

In current Nightly, `cargo doc` fails with the error message below. The fix in rustdoc is at the “investigating the feasibility” stage. See rust-lang/rust#62132 and rust-lang/rust#62059 ```rust error[E0275]: overflow evaluating the requirement `proc_macro2::Group: std::marker::Unpin` | = help: consider adding a `#![recursion_limit="128"]` attribute to your crate = note: required because it appears within the type `proc_macro2::TokenTree` = note: required because it appears within the type `*const proc_macro2::TokenTree` = note: required because it appears within the type `std::ptr::Unique<proc_macro2::TokenTree>` = note: required because it appears within the type `alloc::raw_vec::RawVec<proc_macro2::TokenTree>` = note: required because it appears within the type `std::vec::Vec<proc_macro2::TokenTree>` = note: required because it appears within the type `proc_macro2::fallback::TokenStream` = note: required because it appears within the type `proc_macro2::imp::TokenStream` = note: required because it appears within the type `proc_macro2::TokenStream` = note: required because it appears within the type `syn::Macro` = note: required because it appears within the type `syn::PatMacro` = note: required because it appears within the type `syn::Pat` = note: required because it appears within the type `(syn::Pat, syn::token::Or)` = note: required because it appears within the type `*const (syn::Pat, syn::token::Or)` = note: required because it appears within the type `std::ptr::Unique<(syn::Pat, syn::token::Or)>` = note: required because it appears within the type `alloc::raw_vec::RawVec<(syn::Pat, syn::token::Or)>` = note: required because it appears within the type `std::vec::Vec<(syn::Pat, syn::token::Or)>` = note: required because it appears within the type `syn::punctuated::Punctuated<syn::Pat, syn::token::Or>` = note: required because it appears within the type `syn::ExprLet` = note: required because it appears within the type `syn::Expr` = note: required because it appears within the type `syn::TypeArray` = note: required because it appears within the type `syn::Type` = note: required because it appears within the type `syn::GenericArgument` = note: required because it appears within the type `(syn::GenericArgument, syn::token::Comma)` = note: required because it appears within the type `*const (syn::GenericArgument, syn::token::Comma)` = note: required because it appears within the type `std::ptr::Unique<(syn::GenericArgument, syn::token::Comma)>` = note: required because it appears within the type `alloc::raw_vec::RawVec<(syn::GenericArgument, syn::token::Comma)>` = note: required because it appears within the type `std::vec::Vec<(syn::GenericArgument, syn::token::Comma)>` = note: required because it appears within the type `syn::punctuated::Punctuated<syn::GenericArgument, syn::token::Comma>` = note: required because it appears within the type `syn::AngleBracketedGenericArguments` = note: required because it appears within the type `syn::PathArguments` = note: required because it appears within the type `syn::PathSegment` = note: required because it appears within the type `(syn::PathSegment, syn::token::Colon2)` = note: required because it appears within the type `*const (syn::PathSegment, syn::token::Colon2)` = note: required because it appears within the type `std::ptr::Unique<(syn::PathSegment, syn::token::Colon2)>` = note: required because it appears within the type `alloc::raw_vec::RawVec<(syn::PathSegment, syn::token::Colon2)>` = note: required because it appears within the type `std::vec::Vec<(syn::PathSegment, syn::token::Colon2)>` = note: required because it appears within the type `syn::punctuated::Punctuated<syn::PathSegment, syn::token::Colon2>` = note: required because it appears within the type `syn::Path` = note: required because it appears within the type `syn::Attribute` = note: required because it appears within the type `*const syn::Attribute` = note: required because it appears within the type `std::ptr::Unique<syn::Attribute>` = note: required because it appears within the type `alloc::raw_vec::RawVec<syn::Attribute>` = note: required because it appears within the type `std::vec::Vec<syn::Attribute>` = note: required because it appears within the type `syn::LifetimeDef` = note: required because it appears within the type `(syn::LifetimeDef, syn::token::Comma)` = note: required because it appears within the type `*const (syn::LifetimeDef, syn::token::Comma)` = note: required because it appears within the type `std::ptr::Unique<(syn::LifetimeDef, syn::token::Comma)>` = note: required because it appears within the type `alloc::raw_vec::RawVec<(syn::LifetimeDef, syn::token::Comma)>` = note: required because it appears within the type `std::vec::Vec<(syn::LifetimeDef, syn::token::Comma)>` = note: required because it appears within the type `syn::punctuated::Punctuated<syn::LifetimeDef, syn::token::Comma>` = note: required because it appears within the type `syn::BoundLifetimes` = note: required because it appears within the type `std::option::Option<syn::BoundLifetimes>` = note: required because it appears within the type `syn::PredicateType` = note: required because it appears within the type `syn::WherePredicate` = note: required because it appears within the type `*const syn::WherePredicate` = note: required because it appears within the type `std::ptr::Unique<syn::WherePredicate>` = note: required because it appears within the type `alloc::raw_vec::RawVec<syn::WherePredicate>` = note: required because it appears within the type `std::vec::Vec<syn::WherePredicate>` = note: required because it appears within the type `std::option::Option<std::vec::Vec<syn::WherePredicate>>` = note: required because it appears within the type `attr::InputClone` = note: required because it appears within the type `std::option::Option<attr::InputClone>` = note: required because it appears within the type `attr::Input` = note: required because it appears within the type `ast::Input<'a>` error: aborting due to previous error For more information about this error, try `rustc --explain E0275`. error: Could not document `derivative`. ```

SimonSapin mentioned this issue Jun 25, 2019

Update to 6/24 rust nightly. servo/servo#23627

Closed

nagisa closed this as completed Jun 25, 2019

SimonSapin mentioned this issue Jun 27, 2019

Rustdoc recursion limit issue #62059

Closed

This was referenced Jul 5, 2019

Work around overflow evaluating the requirement in Nightly rustdoc mcarton/rust-derivative#36

Closed

Work around overflow evaluating the requirement in Nightly rustdoc mystor/synstructure#30

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Uh oh!

Rustdoc regression in synstructure: error[E0275]: overflow evaluating the requirement `alloc::raw_vec::RawVec<(syn::Lifetime, syn::token::Add)>: std::marker::Unpin` #62132

Rustdoc regression in synstructure: error[E0275]: overflow evaluating the requirement `alloc::raw_vec::RawVec<(syn::Lifetime, syn::token::Add)>: std::marker::Unpin` #62132

SimonSapin commented Jun 25, 2019

nagisa commented Jun 25, 2019

Uh oh!

Rustdoc regression in synstructure: error[E0275]: overflow evaluating the requirement alloc::raw_vec::RawVec<(syn::Lifetime, syn::token::Add)>: std::marker::Unpin #62132

Rustdoc regression in synstructure: error[E0275]: overflow evaluating the requirement alloc::raw_vec::RawVec<(syn::Lifetime, syn::token::Add)>: std::marker::Unpin #62132

Comments

SimonSapin commented Jun 25, 2019

nagisa commented Jun 25, 2019

Uh oh!

Rustdoc regression in synstructure: error[E0275]: overflow evaluating the requirement `alloc::raw_vec::RawVec<(syn::Lifetime, syn::token::Add)>: std::marker::Unpin` #62132

Rustdoc regression in synstructure: error[E0275]: overflow evaluating the requirement `alloc::raw_vec::RawVec<(syn::Lifetime, syn::token::Add)>: std::marker::Unpin` #62132