Fix impl being removed excessively #82496

GuillaumeGomez · 2021-02-24T20:49:14Z

To prevent some impls to get removed, the type has to be "registered". This is because of the change from 8eaf68f , before that commit, the impls were filtered before we added the multiple Deref "go down".

cc @jryans
r? @jyn514

jryans

Ah thanks for fixing this regression, the fix makes sense to me. I suppose my testing had been too focused on the non-primitive variant...

GuillaumeGomez · 2021-02-24T20:55:54Z

Thanks to you for the initial implementation! :p

I added a foreign non-primitive type (String) to ensure that it didn't break either.

rust-log-analyzer · 2021-02-24T21:18:32Z

The job x86_64-gnu-llvm-9 failed! Check out the build log: (web) (plain)

Click to see the possible cause of the failure (guessed by this bot)

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---
 finished in 0.430 seconds
Check compiletest suite=assembly mode=assembly (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)

running 29 tests
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 finished in 0.076 seconds
Suite("src/test/incremental") not skipped for "bootstrap::test::Incremental" -- not in ["src/tools/tidy"]
Check compiletest suite=incremental mode=incremental (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)
---
 finished in 10.227 seconds
Check compiletest suite=debuginfo mode=debuginfo (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)

running 116 tests
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test result: ok. 78 passed; 0 failed; 38 ignored; 0 measured; 0 filtered out; finished in 2.30s

 finished in 2.383 seconds
Suite("src/test/ui-fulldeps") not skipped for "bootstrap::test::UiFullDeps" -- not in ["src/tools/tidy"]
---
 Documenting std v0.0.0 (/checkout/library/std)
    Finished release [optimized] target(s) in 16.03s
   Compiling std v0.0.0 (/checkout/library/std)
 Documenting proc_macro v0.0.0 (/checkout/library/proc_macro)
error[E0773]: attempted to define built-in macro more than once
     |
1111 | /     macro_rules! cfg {
1111 | /     macro_rules! cfg {
1112 | |         ($($cfg:tt)*) => {
1113 | |             /* compiler built-in */
1115 | |     }
     | |_____^
     |
note: previously defined here
note: previously defined here
    --> /checkout/library/core/src/macros/mod.rs:1111:5
     |
1111 | /     macro_rules! cfg {
1112 | |         ($($cfg:tt)*) => {
1113 | |             /* compiler built-in */
1115 | |     }
     | |_____^

thread 'rustc' panicked at 'index out of bounds: the len is 18 but the index is 18', compiler/rustc_metadata/src/creader.rs:130:21
---
For more information about this error, try `rustc --explain E0773`.
error: could not document `proc_macro`

Caused by:
  process didn't exit successfully: `/checkout/obj/build/bootstrap/debug/rustdoc --edition=2018 --crate-type lib --crate-name proc_macro library/proc_macro/src/lib.rs --target x86_64-unknown-linux-gnu -o /checkout/obj/build/x86_64-unknown-linux-gnu/stage2-std/x86_64-unknown-linux-gnu/doc --error-format=json --json=diagnostic-rendered-ansi --markdown-css rust.css --markdown-no-toc -Z unstable-options --resource-suffix 1.52.0 --index-page /checkout/src/doc/index.md -L dependency=/checkout/obj/build/x86_64-unknown-linux-gnu/stage2-std/x86_64-unknown-linux-gnu/release/deps -L dependency=/checkout/obj/build/x86_64-unknown-linux-gnu/stage2-std/release/deps --extern std=/checkout/obj/build/x86_64-unknown-linux-gnu/stage2-std/x86_64-unknown-linux-gnu/release/deps/libstd-e68db195a71b092b.rmeta -Dwarnings -Winvalid_codeblock_attributes --crate-version '1.52.0-nightly
  (e975e0ea3
  2021-02-24)'` (exit code: 1)


command did not execute successfully: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage0/bin/cargo" "rustdoc" "--target" "x86_64-unknown-linux-gnu" "-Zbinary-dep-depinfo" "-j" "16" "--release" "--locked" "--color" "always" "--features" "panic-unwind backtrace compiler-builtins-c" "--manifest-path" "/checkout/library/test/Cargo.toml" "-p" "proc_macro" "--" "--markdown-css" "rust.css" "--markdown-no-toc" "-Z" "unstable-options" "--resource-suffix" "1.52.0" "--index-page" "/checkout/src/doc/index.md"


failed to run: /checkout/obj/build/bootstrap/debug/bootstrap --stage 2 test --exclude src/tools/tidy
Build completed unsuccessfully in 0:26:20

GuillaumeGomez · 2021-02-24T21:26:27Z

Apparently, the fix is breaking something else later on. Investigating...

src/test/rustdoc/impl-on-foreign.rs

jyn514 · 2021-02-24T21:28:49Z

error[E0773]: attempted to define built-in macro more than once

This looks like #75176. Can you get a backtrace of that error with -Z treat-err-as-bug?

GuillaumeGomez · 2021-02-24T21:33:41Z

Here it is:

error[E0773]: attempted to define built-in macro more than once
    --> /home/imperio/rust/rust/library/core/src/macros/mod.rs:1111:5
     |
1111 | /     macro_rules! cfg {
1112 | |         ($($cfg:tt)*) => {
1113 | |             /* compiler built-in */
1114 | |         };
1115 | |     }
     | |_____^
     |
note: previously defined here
    --> /home/imperio/rust/rust/library/core/src/macros/mod.rs:1111:5
     |
1111 | /     macro_rules! cfg {
1112 | |         ($($cfg:tt)*) => {
1113 | |             /* compiler built-in */
1114 | |         };
1115 | |     }
     | |_____^

thread 'rustc' panicked at 'aborting due to `-Z treat-err-as-bug=1`', compiler/rustc_errors/src/lib.rs:1028:27
stack backtrace:
   0: std::panicking::begin_panic
   1: rustc_errors::HandlerInner::emit_diagnostic
   2: rustc_errors::diagnostic_builder::DiagnosticBuilder::emit
   3: rustc_resolve::macros::<impl rustc_resolve::Resolver>::compile_macro
   4: rustc_resolve::build_reduced_graph::<impl rustc_resolve::Resolver>::get_macro_by_def_id
   5: rustc_resolve::macros::<impl rustc_resolve::Resolver>::check_reserved_macro_name
   6: rustc_resolve::imports::<impl rustc_resolve::Resolver>::try_define
   7: rustc_resolve::build_reduced_graph::<impl rustc_resolve::Resolver>::define
   8: rustc_resolve::build_reduced_graph::BuildReducedGraphVisitor::build_reduced_graph_for_external_crate_res
   9: rustc_resolve::Resolver::resolutions
  10: rustc_resolve::Resolver::resolution
  11: rustc_resolve::imports::<impl rustc_resolve::Resolver>::resolve_ident_in_module_unadjusted_ext
  12: rustc_resolve::Resolver::resolve_path_with_ribs::{{closure}}
  13: rustc_resolve::Resolver::resolve_path_with_ribs
  14: rustc_resolve::Resolver::resolve_str_path_error
  15: rustc_interface::passes::BoxedResolver::access::{{closure}}
  16: rustc_interface::passes::configure_and_expand::{{closure}}
  17: rustc_interface::passes::BoxedResolver::access
  18: rustdoc::passes::collect_intra_doc_links::LinkCollector::resolve_link
  19: <rustdoc::passes::collect_intra_doc_links::LinkCollector as rustdoc::fold::DocFolder>::fold_item
  20: alloc::vec::source_iter_marker::<impl alloc::vec::spec_from_iter::SpecFromIter<T,I> for alloc::vec::Vec<T>>::from_iter
  21: rustdoc::fold::DocFolder::fold_inner_recur
  22: rustdoc::fold::DocFolder::fold_item_recur
  23: <rustdoc::passes::collect_intra_doc_links::LinkCollector as rustdoc::fold::DocFolder>::fold_item
  24: rustdoc::passes::collect_intra_doc_links::collect_intra_doc_links
  25: rustdoc::core::run_global_ctxt
  26: rustc_session::utils::<impl rustc_session::session::Session>::time
  27: rustc_interface::passes::QueryContext::enter
  28: rustc_interface::interface::create_compiler_and_run
  29: rustdoc::main_options
  30: scoped_tls::ScopedKey<T>::set
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

error: internal compiler error: unexpected panic

GuillaumeGomez · 2021-02-24T21:34:24Z

I also used this opportunity to remove the useless insert in the primitives.

GuillaumeGomez · 2021-02-25T20:34:45Z

I was able to track down the origin more precisely:

rust/src/librustdoc/passes/collect_intra_doc_links.rs

Line 474 in 749d70a

.resolve_str_path_error(DUMMY_SP, &path_str, ns, module_id)

When we call the resolve_str_path_error, it returns a ast::Path which looks like this:

Path { span: library/proc_macro/src/lib.rs:1:1: 1:1 (#0), segments: [PathSegment { ident: core#0, id: NodeId(57356), args: None }, PathSegment { ident: cmp#0, id: NodeId(57357), args: None }, PathSegment { ident: Ord#0, id: NodeId(57358), args: None }], tokens: None }

So completely fine from what I can see, however the Res returned alongside looks like this:

Def(Trait, DefId(18:1894

Yes, it's the complete output, rustc crashes when trying to display more information because the crate "18" doesn't exist.

I precise that we send "core::cmp::Ord" as path_str argument and the module_id is one from the alloc crate:

DefId(5:4868 ~ alloc[d315]::vec)

And ns is TypeNS.

At this point, I'm not sure where to look at to be honest. Is it an issue inside the compiler maybe or are we doing something completely wrong on rustdoc side?

cc @rust-lang/compiler

rust-log-analyzer · 2021-02-25T21:07:41Z

The job x86_64-gnu-llvm-9 failed! Check out the build log: (web) (plain)

Click to see the possible cause of the failure (guessed by this bot)

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---
Suite("src/test/assembly") not skipped for "bootstrap::test::Assembly" -- not in ["src/tools/tidy"]
Check compiletest suite=assembly mode=assembly (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)

running 29 tests
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 finished in 0.063 seconds
Suite("src/test/incremental") not skipped for "bootstrap::test::Incremental" -- not in ["src/tools/tidy"]
Check compiletest suite=incremental mode=incremental (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)
---
Suite("src/test/debuginfo") not skipped for "bootstrap::test::Debuginfo" -- not in ["src/tools/tidy"]
Check compiletest suite=debuginfo mode=debuginfo (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)

running 116 tests
iiiiiiiiii.i.i..i..i..ii....i.i....ii..........iiii.........i.....i...i.......ii.i.ii.....iiii.....i 100/116
test result: ok. 78 passed; 0 failed; 38 ignored; 0 measured; 0 filtered out; finished in 1.90s

 finished in 1.963 seconds
Suite("src/test/ui-fulldeps") not skipped for "bootstrap::test::UiFullDeps" -- not in ["src/tools/tidy"]
---
 Documenting std v0.0.0 (/checkout/library/std)
    Finished release [optimized] target(s) in 14.82s
   Compiling std v0.0.0 (/checkout/library/std)
 Documenting proc_macro v0.0.0 (/checkout/library/proc_macro)
error[E0773]: attempted to define built-in macro more than once
     |
1111 | /     macro_rules! cfg {
1111 | /     macro_rules! cfg {
1112 | |         ($($cfg:tt)*) => {
1113 | |             /* compiler built-in */
1115 | |     }
     | |_____^
     |
note: previously defined here
note: previously defined here
    --> /checkout/library/core/src/macros/mod.rs:1111:5
     |
1111 | /     macro_rules! cfg {
1112 | |         ($($cfg:tt)*) => {
1113 | |             /* compiler built-in */
1115 | |     }
     | |_____^

thread 'rustc' panicked at 'index out of bounds: the len is 18 but the index is 18', compiler/rustc_metadata/src/creader.rs:130:21
---
For more information about this error, try `rustc --explain E0773`.
error: could not document `proc_macro`

Caused by:
  process didn't exit successfully: `/checkout/obj/build/bootstrap/debug/rustdoc --edition=2018 --crate-type lib --crate-name proc_macro library/proc_macro/src/lib.rs --target x86_64-unknown-linux-gnu -o /checkout/obj/build/x86_64-unknown-linux-gnu/stage2-std/x86_64-unknown-linux-gnu/doc --error-format=json --json=diagnostic-rendered-ansi --markdown-css rust.css --markdown-no-toc -Z unstable-options --resource-suffix 1.52.0 --index-page /checkout/src/doc/index.md -L dependency=/checkout/obj/build/x86_64-unknown-linux-gnu/stage2-std/x86_64-unknown-linux-gnu/release/deps -L dependency=/checkout/obj/build/x86_64-unknown-linux-gnu/stage2-std/release/deps --extern std=/checkout/obj/build/x86_64-unknown-linux-gnu/stage2-std/x86_64-unknown-linux-gnu/release/deps/libstd-e68db195a71b092b.rmeta -Dwarnings -Winvalid_codeblock_attributes --crate-version '1.52.0-nightly
  (6023d4485
  2021-02-25)'` (exit code: 1)


command did not execute successfully: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage0/bin/cargo" "rustdoc" "--target" "x86_64-unknown-linux-gnu" "-Zbinary-dep-depinfo" "-j" "16" "--release" "--locked" "--color" "always" "--features" "panic-unwind backtrace compiler-builtins-c" "--manifest-path" "/checkout/library/test/Cargo.toml" "-p" "proc_macro" "--" "--markdown-css" "rust.css" "--markdown-no-toc" "-Z" "unstable-options" "--resource-suffix" "1.52.0" "--index-page" "/checkout/src/doc/index.md"


failed to run: /checkout/obj/build/bootstrap/debug/bootstrap --stage 2 test --exclude src/tools/tidy
Build completed unsuccessfully in 0:22:33

src/librustdoc/passes/collect_trait_impls.rs

petrochenkov · 2021-02-26T23:39:51Z

This looks like #75176.

Yes, looks similar.
Perhaps a similar check on whether resolution is speculative will help as well.

Also, rustdoc still has fundamental issues with using frozen resolver/cstore discussed in #68427 and you will continue meeting issues until they are addressed.

JohnCSimon · 2021-03-16T05:55:31Z

@rustbot label: -S-waiting-on-review +S-waiting-on-author

jyn514 · 2021-03-31T23:04:33Z

Here's a backtrace with debuginfo:

thread 'rustc' panicked at 'aborting due to `-Z treat-err-as-bug=1`', compiler/rustc_errors/src/lib.rs:1030:27
stack backtrace:
   0: std::panicking::begin_panic
             at ./library/std/src/panicking.rs:519:12
   1: rustc_errors::HandlerInner::panic_if_treat_err_as_bug
             at ./compiler/rustc_errors/src/lib.rs:1030:27
   2: rustc_errors::HandlerInner::bump_err_count
             at ./compiler/rustc_errors/src/lib.rs:1020:9
   3: rustc_errors::HandlerInner::emit_diagnostic
             at ./compiler/rustc_errors/src/lib.rs:836:13
   4: rustc_errors::Handler::emit_diagnostic
             at ./compiler/rustc_errors/src/lib.rs:756:9
   5: rustc_errors::diagnostic_builder::DiagnosticBuilder::emit
             at ./compiler/rustc_errors/src/diagnostic_builder.rs:103:9
   6: rustc_resolve::macros::<impl rustc_resolve::Resolver>::compile_macro
             at ./compiler/rustc_resolve/src/macros.rs:1205:25
   7: rustc_resolve::build_reduced_graph::<impl rustc_resolve::Resolver>::get_macro_by_def_id
             at ./compiler/rustc_resolve/src/build_reduced_graph.rs:200:53
   8: rustc_resolve::build_reduced_graph::<impl rustc_resolve::Resolver>::get_macro
             at ./compiler/rustc_resolve/src/build_reduced_graph.rs:188:58
   9: rustc_resolve::macros::<impl rustc_resolve::Resolver>::check_reserved_macro_name
             at ./compiler/rustc_resolve/src/macros.rs:1176:30
  10: rustc_resolve::imports::<impl rustc_resolve::Resolver>::try_define
             at ./compiler/rustc_resolve/src/imports.rs:498:9
  11: rustc_resolve::build_reduced_graph::<impl rustc_resolve::Resolver>::define
             at ./compiler/rustc_resolve/src/build_reduced_graph.rs:92:35
  12: rustc_resolve::build_reduced_graph::BuildReducedGraphVisitor::build_reduced_graph_for_external_crate_res
  13: rustc_resolve::build_reduced_graph::<impl rustc_resolve::Resolver>::build_reduced_graph_external
             at ./compiler/rustc_resolve/src/build_reduced_graph.rs:224:13
  14: rustc_resolve::Resolver::resolutions
             at ./compiler/rustc_resolve/src/lib.rs:1572:13
  15: rustc_resolve::Resolver::resolution
             at ./compiler/rustc_resolve/src/lib.rs:1582:10
  16: rustc_resolve::imports::<impl rustc_resolve::Resolver>::resolve_ident_in_module_unadjusted_ext
             at ./compiler/rustc_resolve/src/imports.rs:265:13
  17: rustc_resolve::Resolver::resolve_ident_in_module_ext
             at ./compiler/rustc_resolve/src/lib.rs:2012:9
  18: rustc_resolve::Resolver::resolve_ident_in_module
             at ./compiler/rustc_resolve/src/lib.rs:1982:9
  19: rustc_resolve::Resolver::resolve_path_with_ribs::{{closure}}
             at ./compiler/rustc_resolve/src/lib.rs:2239:21
  20: rustc_resolve::Resolver::resolve_path_with_ribs
             at ./compiler/rustc_resolve/src/lib.rs:2287:33
  21: rustc_resolve::Resolver::resolve_path
             at ./compiler/rustc_resolve/src/lib.rs:2112:9
  22: rustc_resolve::Resolver::resolve_ast_path
             at ./compiler/rustc_resolve/src/lib.rs:3224:15
  23: rustc_resolve::Resolver::resolve_str_path_error
             at ./compiler/rustc_resolve/src/lib.rs:3213:19
  24: rustdoc::passes::collect_intra_doc_links::LinkCollector::resolve_macro::{{closure}}
             at ./src/librustdoc/passes/collect_intra_doc_links.rs:449:17
  25: rustc_interface::passes::BoxedResolver::access::{{closure}}
             at ./compiler/rustc_data_structures/src/box_region.rs:113:34
  26: rustc_interface::passes::configure_and_expand::{{closure}}
             at ./compiler/rustc_interface/src/passes.rs:138:9
  27: alloc::boxed::<impl core::ops::generator::Generator<R> for core::pin::Pin<alloc::boxed::Box<G,A>>>::resume
             at ./library/alloc/src/boxed.rs:1668:9
  28: rustc_data_structures::box_region::PinnedGenerator<I,A,R>::access
             at ./compiler/rustc_data_structures/src/box_region.rs:55:13
  29: rustc_interface::passes::BoxedResolver::access
             at ./compiler/rustc_data_structures/src/box_region.rs:119:21
  30: rustdoc::core::DocContext::enter_resolver
             at ./src/librustdoc/core.rs:104:9
  31: rustdoc::passes::collect_intra_doc_links::LinkCollector::resolve_macro
             at ./src/librustdoc/passes/collect_intra_doc_links.rs:431:9
  32: rustdoc::passes::collect_intra_doc_links::LinkCollector::resolve_with_disambiguator
             at ./src/librustdoc/passes/collect_intra_doc_links.rs:1368:31
  33: rustdoc::passes::collect_intra_doc_links::LinkCollector::resolve_with_disambiguator_cached
             at ./src/librustdoc/passes/collect_intra_doc_links.rs:1282:19
  34: rustdoc::passes::collect_intra_doc_links::LinkCollector::resolve_link
             at ./src/librustdoc/passes/collect_intra_doc_links.rs:1091:39
  35: <rustdoc::passes::collect_intra_doc_links::LinkCollector as rustdoc::fold::DocFolder>::fold_item
             at ./src/librustdoc/passes/collect_intra_doc_links.rs:906:28
  36: rustdoc::fold::DocFolder::fold_mod::{{closure}}
             at ./src/librustdoc/fold.rs:85:55
  37: core::iter::adapters::filter_map::filter_map_try_fold::{{closure}}
             at ./library/core/src/iter/adapters/filter_map.rs:46:28
  38: core::iter::traits::iterator::Iterator::try_fold
             at ./library/core/src/iter/traits/iterator.rs:1993:21
  39: <core::iter::adapters::filter_map::FilterMap<I,F> as core::iter::traits::iterator::Iterator>::try_fold
             at ./library/core/src/iter/adapters/filter_map.rs:77:9
  40: <I as alloc::vec::source_iter_marker::SpecInPlaceCollect<T,I>>::collect_in_place
             at ./library/alloc/src/vec/source_iter_marker.rs:117:13
  41: alloc::vec::source_iter_marker::<impl alloc::vec::spec_from_iter::SpecFromIter<T,I> for alloc::vec::Vec<T>>::from_iter
             at ./library/alloc/src/vec/source_iter_marker.rs:55:19
  42: <alloc::vec::Vec<T> as core::iter::traits::collect::FromIterator<T>>::from_iter
             at ./library/alloc/src/vec/mod.rs:2398:9
  43: core::iter::traits::iterator::Iterator::collect
             at ./library/core/src/iter/traits/iterator.rs:1775:9
  44: rustdoc::fold::DocFolder::fold_mod
             at ./src/librustdoc/fold.rs:85:20
  45: rustdoc::fold::DocFolder::fold_inner_recur
             at ./src/librustdoc/fold.rs:26:41
  46: rustdoc::fold::DocFolder::fold_item_recur
             at ./src/librustdoc/fold.rs:77:18
  47: <rustdoc::passes::collect_intra_doc_links::LinkCollector as rustdoc::fold::DocFolder>::fold_item
             at ./src/librustdoc/passes/collect_intra_doc_links.rs:918:23
  48: rustdoc::fold::DocFolder::fold_crate
             at ./src/librustdoc/fold.rs:90:20
  49: rustdoc::passes::collect_intra_doc_links::collect_intra_doc_links
             at ./src/librustdoc/passes/collect_intra_doc_links.rs:49:5
  50: rustdoc::core::run_global_ctxt::{{closure}}
             at ./src/librustdoc/core.rs:577:56
  51: rustc_data_structures::profiling::VerboseTimingGuard::run
             at ./compiler/rustc_data_structures/src/profiling.rs:573:9
  52: rustc_session::utils::<impl rustc_session::session::Session>::time
             at ./compiler/rustc_session/src/utils.rs:10:9
  53: rustdoc::core::run_global_ctxt
             at ./src/librustdoc/core.rs:577:21
  54: rustdoc::main_options::{{closure}}::{{closure}}::{{closure}}::{{closure}}
             at ./src/librustdoc/lib.rs:662:21
  55: rustc_data_structures::profiling::VerboseTimingGuard::run
             at ./compiler/rustc_data_structures/src/profiling.rs:573:9
  56: rustc_session::utils::<impl rustc_session::session::Session>::time
             at ./compiler/rustc_session/src/utils.rs:10:9
  57: rustdoc::main_options::{{closure}}::{{closure}}::{{closure}}
             at ./src/librustdoc/lib.rs:661:55
  58: rustc_interface::passes::QueryContext::enter::{{closure}}
             at ./compiler/rustc_interface/src/passes.rs:755:42
  59: rustc_middle::ty::context::tls::enter_context::{{closure}}
             at ./compiler/rustc_middle/src/ty/context.rs:1726:50
  60: rustc_rayon_core::tlv::with
             at /home/joshua/.local/lib/cargo/registry/src/git.luolix.top-1ecc6299db9ec823/rustc-rayon-core-0.3.1/src/tlv.rs:19:5
  61: rustc_middle::ty::context::tls::set_tlv
             at ./compiler/rustc_middle/src/ty/context.rs:1684:9
  62: rustc_middle::ty::context::tls::enter_context
             at ./compiler/rustc_middle/src/ty/context.rs:1726:9
  63: rustc_interface::passes::QueryContext::enter
             at ./compiler/rustc_interface/src/passes.rs:755:9
  64: rustdoc::main_options::{{closure}}::{{closure}}
             at ./src/librustdoc/lib.rs:660:13
  65: rustc_interface::queries::<impl rustc_interface::interface::Compiler>::enter
             at ./compiler/rustc_interface/src/queries.rs:422:19
  66: rustdoc::main_options::{{closure}}
             at ./src/librustdoc/lib.rs:646:9
  67: rustc_interface::interface::create_compiler_and_run::{{closure}}
             at ./compiler/rustc_interface/src/interface.rs:208:13
  68: rustc_span::with_source_map
             at ./compiler/rustc_span/src/lib.rs:788:5
  69: rustc_interface::interface::create_compiler_and_run
             at ./compiler/rustc_interface/src/interface.rs:202:5
  70: rustdoc::main_options
             at ./src/librustdoc/lib.rs:645:5
  71: rustdoc::main_args::{{closure}}
             at ./src/librustdoc/lib.rs:570:17
  72: rustc_rayon_core::thread_pool::ThreadPool::install::{{closure}}
             at /home/joshua/.local/lib/cargo/registry/src/git.luolix.top-1ecc6299db9ec823/rustc-rayon-core-0.3.1/src/thread_pool/mod.rs:110:40
  73: rustc_rayon_core::registry::Registry::in_worker_cold::{{closure}}::{{closure}}
             at /home/joshua/.local/lib/cargo/registry/src/git.luolix.top-1ecc6299db9ec823/rustc-rayon-core-0.3.1/src/registry.rs:468:21
  74: <rustc_rayon_core::job::StackJob<L,F,R> as rustc_rayon_core::job::Job>::execute::call::{{closure}}
             at /home/joshua/.local/lib/cargo/registry/src/git.luolix.top-1ecc6299db9ec823/rustc-rayon-core-0.3.1/src/job.rs:116:21
  75: <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
             at ./library/std/src/panic.rs:344:9
  76: std::panicking::try::do_call
             at ./library/std/src/panicking.rs:379:40
  77: std::panicking::try
             at ./library/std/src/panicking.rs:343:19
  78: std::panic::catch_unwind
             at ./library/std/src/panic.rs:431:14
  79: rustc_rayon_core::unwind::halt_unwinding
             at /home/joshua/.local/lib/cargo/registry/src/git.luolix.top-1ecc6299db9ec823/rustc-rayon-core-0.3.1/src/unwind.rs:17:5
  80: <rustc_rayon_core::job::StackJob<L,F,R> as rustc_rayon_core::job::Job>::execute
             at /home/joshua/.local/lib/cargo/registry/src/git.luolix.top-1ecc6299db9ec823/rustc-rayon-core-0.3.1/src/job.rs:123:38
  81: rustc_rayon_core::job::JobRef::execute
             at /home/joshua/.local/lib/cargo/registry/src/git.luolix.top-1ecc6299db9ec823/rustc-rayon-core-0.3.1/src/job.rs:60:9
  82: rustc_rayon_core::registry::WorkerThread::execute
             at /home/joshua/.local/lib/cargo/registry/src/git.luolix.top-1ecc6299db9ec823/rustc-rayon-core-0.3.1/src/registry.rs:726:9
  83: rustc_rayon_core::registry::WorkerThread::wait_until_cold
             at /home/joshua/.local/lib/cargo/registry/src/git.luolix.top-1ecc6299db9ec823/rustc-rayon-core-0.3.1/src/registry.rs:707:17
  84: rustc_rayon_core::registry::WorkerThread::wait_until
             at /home/joshua/.local/lib/cargo/registry/src/git.luolix.top-1ecc6299db9ec823/rustc-rayon-core-0.3.1/src/registry.rs:681:13
  85: rustc_rayon_core::registry::main_loop
             at /home/joshua/.local/lib/cargo/registry/src/git.luolix.top-1ecc6299db9ec823/rustc-rayon-core-0.3.1/src/registry.rs:805:5
  86: rustc_rayon_core::registry::ThreadBuilder::run
             at /home/joshua/.local/lib/cargo/registry/src/git.luolix.top-1ecc6299db9ec823/rustc-rayon-core-0.3.1/src/registry.rs:57:18
  87: rustc_interface::util::setup_callbacks_and_run_in_thread_pool_with_globals::{{closure}}::{{closure}}::{{closure}}::{{closure}}
             at ./compiler/rustc_interface/src/util.rs:214:21
  88: scoped_tls::ScopedKey<T>::set
             at /home/joshua/.local/lib/cargo/registry/src/git.luolix.top-1ecc6299db9ec823/scoped-tls-1.0.0/src/lib.rs:137:9
  89: rustc_interface::util::setup_callbacks_and_run_in_thread_pool_with_globals::{{closure}}::{{closure}}::{{closure}}
             at ./compiler/rustc_interface/src/util.rs:212:17
  90: rustc_rayon_core::ThreadPoolBuilder::build_scoped::{{closure}}::{{closure}}::{{closure}}
             at /home/joshua/.local/lib/cargo/registry/src/git.luolix.top-1ecc6299db9ec823/rustc-rayon-core-0.3.1/src/lib.rs:307:44
  91: crossbeam_utils::thread::ScopedThreadBuilder::spawn::{{closure}}
             at /home/joshua/.local/lib/cargo/registry/src/git.luolix.top-1ecc6299db9ec823/crossbeam-utils-0.7.2/src/thread.rs:415:31
  92: crossbeam_utils::thread::ScopedThreadBuilder::spawn::{{closure}}
             at /home/joshua/.local/lib/cargo/registry/src/git.luolix.top-1ecc6299db9ec823/crossbeam-utils-0.7.2/src/thread.rs:423:39
  93: <alloc::boxed::Box<F,A> as core::ops::function::FnMut<Args>>::call_mut
             at ./library/alloc/src/boxed.rs:1553:9
  94: crossbeam_utils::thread::ScopedThreadBuilder::spawn::{{closure}}
             at /home/joshua/.local/lib/cargo/registry/src/git.luolix.top-1ecc6299db9ec823/crossbeam-utils-0.7.2/src/thread.rs:431:44
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

and the logging immediately before:

TRACE rustdoc::passes::collect_intra_doc_links considering link 'core::cmp::Ord#lexicographical-comparison'
DEBUG rustdoc::passes::collect_intra_doc_links resolving core::cmp::Ord as a macro in the module DefId(5:5981 ~ alloc[5d23]::vec)
2:rustcDEBUG rustc_resolve resolve_path(path=[Segment { ident: core#0, id: Some(NodeId(57541)), has_generic_args: false }, Segment { ident: cmp#0, id: Some(NodeId(57542)), ha
s_generic_args: false }, Segment { ident: Ord#0, id: Some(NodeId(57543)), has_generic_args: false }], opt_ns=Some(MacroNS), record_used=false, path_span=library/proc_macro/src/lib.rs:1:1: 1:1 (#0), crate_lint=No)
2:rustcDEBUG rustc_resolve resolve_path ident 0 core#0 Some(NodeId(57541))
2:rustcDEBUG rustc_resolve resolve_path ident 1 cmp#0 Some(NodeId(57542))
error[E0773]: attempted to define built-in macro more than once

jyn514 · 2021-04-01T01:27:12Z

I don't see anything that looks wrong from resolve's perspective. I'm going to take a look at implementing #68427 (comment).

jyn514 · 2021-04-01T04:08:15Z

Welp, #83738 didn't help unfortunately. It looks like the module is already from the second copy of core (crate id 18) when resolve_ident_in_module_unadjusted_ext calls resolution? I spent a while looking at early_resolve_ident_in_lexical_scope without much progress, I don't know why it's loading a new crate.

…rochenkov rustdoc: Don't load all extern crates unconditionally Instead, only load the crates that are linked to with intra-doc links. This doesn't help very much with any of rustdoc's fundamental issues with freezing the resolver, but it at least fixes a stable-to-stable regression, and makes the crate loading model somewhat more consistent with rustc's. I tested and it unfortunately does not help at all with rust-lang#82496. Closes rust-lang#68427. Let me know if you want me to open a separate issue for not freezing the resolver. r? `@petrochenkov` cc `@eddyb` `@ollie27`

…rochenkov rustdoc: Don't load all extern crates unconditionally Instead, only load the crates that are linked to with intra-doc links. This doesn't help very much with any of rustdoc's fundamental issues with freezing the resolver, but it at least fixes a stable-to-stable regression, and makes the crate loading model somewhat more consistent with rustc's. I tested and it unfortunately does not help at all with rust-lang#82496. Closes rust-lang#68427. Let me know if you want me to open a separate issue for not freezing the resolver. r? ``@petrochenkov`` cc ``@eddyb`` ``@ollie27``

…chenkov rustdoc: Don't load all extern crates unconditionally Instead, only load the crates that are linked to with intra-doc links. This doesn't help very much with any of rustdoc's fundamental issues with freezing the resolver, but it at least fixes a stable-to-stable regression, and makes the crate loading model somewhat more consistent with rustc's. I tested and it unfortunately does not help at all with rust-lang#82496. Closes rust-lang#68427. Let me know if you want me to open a separate issue for not freezing the resolver. r? `@petrochenkov` cc `@eddyb` `@ollie27`

jyn514 · 2021-05-09T03:34:49Z

This can be closed when #84867 lands I believe.

GuillaumeGomez · 2021-05-09T10:36:13Z

It can be closed already. :)

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GuillaumeGomez force-pushed the put-back-impls branch from 62fa802 to 8cbc8e0 Compare February 24, 2021 21:34

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Fix impl being removed excessively

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GuillaumeGomez force-pushed the put-back-impls branch from 5caf793 to 237e524 Compare February 25, 2021 20:41

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jyn514 mentioned this pull request Apr 1, 2021

rustdoc: Don't load all extern crates unconditionally #83738

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rustdoc: Stop cloning the resolver #83761

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Anders429 mentioned this pull request Apr 5, 2021

0.2.0 Checklist Anders429/more_ranges#3

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Fix impl being removed excessively #82496

Fix impl being removed excessively #82496

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Fix impl being removed excessively #82496

Fix impl being removed excessively #82496

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