[INFO] fetching crate kythe-indexer 0.1.0...
[INFO] documenting kythe-indexer-0.1.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate kythe-indexer 0.1.0 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate kythe-indexer 0.1.0 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate kythe-indexer 0.1.0
[INFO] finished tweaking crates.io crate kythe-indexer 0.1.0
[INFO] tweaked toml for crates.io crate kythe-indexer 0.1.0 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 39bc74eefb78f943e1c8781b3f0b562cd6b9efce5e618ce13dda8135afb13a27
[INFO] running `Command { std: "docker" "start" "-a" "39bc74eefb78f943e1c8781b3f0b562cd6b9efce5e618ce13dda8135afb13a27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "39bc74eefb78f943e1c8781b3f0b562cd6b9efce5e618ce13dda8135afb13a27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39bc74eefb78f943e1c8781b3f0b562cd6b9efce5e618ce13dda8135afb13a27", kill_on_drop: false }`
[INFO] [stdout] 39bc74eefb78f943e1c8781b3f0b562cd6b9efce5e618ce13dda8135afb13a27
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] afaa95f1d770230f88e357d8dbf97dc7439cef100f46a5f95ac854917869ad29
[INFO] running `Command { std: "docker" "start" "-a" "afaa95f1d770230f88e357d8dbf97dc7439cef100f46a5f95ac854917869ad29", kill_on_drop: false }`
[INFO] [stderr]  Documenting kythe-indexer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]   --> src/lib.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | #![feature(plugin_registrar)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]    |
[INFO] [stdout]    = note: a __rustc_plugin_registrar symbol must now be defined instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `syntax`
[INFO] [stdout]   --> src/lib.rs:19:1
[INFO] [stdout]    |
[INFO] [stdout] 19 | extern crate syntax;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0462]: found staticlib `rustc` instead of rlib or dylib
[INFO] [stdout]   --> src/lib.rs:24:1
[INFO] [stdout]    |
[INFO] [stdout] 24 | extern crate rustc;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: please recompile that crate using --crate-type lib
[INFO] [stdout]    = note: the following crate versions were found:
[INFO] [stdout]            crate `rustc`: /opt/rustwide/rustup-home/toolchains/1.61.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-stable_rt.msan.a
[INFO] [stdout]            crate `rustc`: /opt/rustwide/rustup-home/toolchains/1.61.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-stable_rt.lsan.a
[INFO] [stdout]            crate `rustc`: /opt/rustwide/rustup-home/toolchains/1.61.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-stable_rt.asan.a
[INFO] [stdout]            crate `rustc`: /opt/rustwide/rustup-home/toolchains/1.61.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-stable_rt.tsan.a
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `rustc_plugin`
[INFO] [stdout]   --> src/lib.rs:25:1
[INFO] [stdout]    |
[INFO] [stdout] 25 | extern crate rustc_plugin;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe you need to install the missing components with: `rustup component add rust-src rustc-dev llvm-tools-preview`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `log`
[INFO] [stdout]   --> src/lib.rs:28:1
[INFO] [stdout]    |
[INFO] [stdout] 28 | extern crate log;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `lint_array` in this scope
[INFO] [stdout]   --> src/pass.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |         lint_array!()
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `walk_list` in this scope
[INFO] [stdout]    --> src/visitor.rs:275:45
[INFO] [stdout]     |
[INFO] [stdout] 275 | ...                   walk_list!(self, visit_expr, args);
[INFO] [stdout]     |                       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `plugin_registrar` in this scope
[INFO] [stdout]   --> src/lib.rs:39:3
[INFO] [stdout]    |
[INFO] [stdout] 39 | #[plugin_registrar]
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `plugin_registrar` is in scope, but it is a function, not an attribute
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `hir`
[INFO] [stdout]   --> src/pass.rs:41:53
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn check_crate(&mut self, cx: &LateContext, _: &hir::Crate) {
[INFO] [stdout]    |                                                     ^^^ use of undeclared crate or module `hir`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `ast`
[INFO] [stdout]    --> src/visitor.rs:132:43
[INFO] [stdout]     |
[INFO] [stdout] 132 |     fn function_call(&self, call_node_id: ast::NodeId, callee_def_id: DefId) {
[INFO] [stdout]     |                                           ^^^ use of undeclared crate or module `ast`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `hir`
[INFO] [stdout]    --> src/visitor.rs:343:23
[INFO] [stdout]     |
[INFO] [stdout] 343 |                 kind: hir::intravisit::FnKind<'v>,
[INFO] [stdout]     |                       ^^^ use of undeclared crate or module `hir`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `hir`
[INFO] [stdout]    --> src/visitor.rs:344:27
[INFO] [stdout]     |
[INFO] [stdout] 344 |                 decl: &'v hir::FnDecl,
[INFO] [stdout]     |                           ^^^ use of undeclared crate or module `hir`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `hir`
[INFO] [stdout]    --> src/visitor.rs:345:27
[INFO] [stdout]     |
[INFO] [stdout] 345 |                 body: &'v hir::Block,
[INFO] [stdout]     |                           ^^^ use of undeclared crate or module `hir`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `ast`
[INFO] [stdout]    --> src/visitor.rs:347:21
[INFO] [stdout]     |
[INFO] [stdout] 347 |                 id: ast::NodeId) {
[INFO] [stdout]     |                     ^^^ use of undeclared crate or module `ast`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `hir`
[INFO] [stdout]    --> src/visitor.rs:384:40
[INFO] [stdout]     |
[INFO] [stdout] 384 |     fn visit_item(&mut self, item: &'v hir::Item) {
[INFO] [stdout]     |                                        ^^^ use of undeclared crate or module `hir`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `hir`
[INFO] [stdout]    --> src/visitor.rs:441:34
[INFO] [stdout]     |
[INFO] [stdout] 441 |                           v: &'v hir::VariantData,
[INFO] [stdout]     |                                  ^^^ use of undeclared crate or module `hir`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `ast`
[INFO] [stdout]    --> src/visitor.rs:442:30
[INFO] [stdout]     |
[INFO] [stdout] 442 |                           n: ast::Name,
[INFO] [stdout]     |                              ^^^ use of undeclared crate or module `ast`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `hir`
[INFO] [stdout]    --> src/visitor.rs:443:34
[INFO] [stdout]     |
[INFO] [stdout] 443 |                           _: &'v hir::Generics,
[INFO] [stdout]     |                                  ^^^ use of undeclared crate or module `hir`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `ast`
[INFO] [stdout]    --> src/visitor.rs:444:39
[INFO] [stdout]     |
[INFO] [stdout] 444 |                           _parent_id: ast::NodeId,
[INFO] [stdout]     |                                       ^^^ use of undeclared crate or module `ast`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0405]: cannot find trait `LintPass` in this scope
[INFO] [stdout]   --> src/pass.rs:34:6
[INFO] [stdout]    |
[INFO] [stdout] 34 | impl LintPass for KytheLintPass {
[INFO] [stdout]    |      ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `LintArray` in this scope
[INFO] [stdout]   --> src/pass.rs:35:28
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn get_lints(&self) -> LintArray {
[INFO] [stdout]    |                            ^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0405]: cannot find trait `LateLintPass` in this scope
[INFO] [stdout]   --> src/pass.rs:40:10
[INFO] [stdout]    |
[INFO] [stdout] 40 | impl<'a> LateLintPass for KytheLintPass {
[INFO] [stdout]    |          ^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `LateContext` in this scope
[INFO] [stdout]   --> src/pass.rs:41:36
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn check_crate(&mut self, cx: &LateContext, _: &hir::Crate) {
[INFO] [stdout]    |                                    ^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `TyCtxt` in this scope
[INFO] [stdout]   --> src/visitor.rs:34:14
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub tcx: TyCtxt<'a, 'tcx, 'tcx>,
[INFO] [stdout]    |              ^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `CodeMap` in this scope
[INFO] [stdout]   --> src/visitor.rs:35:22
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub codemap: &'a CodeMap,
[INFO] [stdout]    |                      ^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `LateContext` in this scope
[INFO] [stdout]   --> src/visitor.rs:47:24
[INFO] [stdout]    |
[INFO] [stdout] 47 |                cx: &'a LateContext<'a, 'tcx>)
[INFO] [stdout]    |                        ^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Span` in this scope
[INFO] [stdout]   --> src/visitor.rs:62:38
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn anchor_from_span(&self, span: Span) -> VName {
[INFO] [stdout]    |                                      ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Span` in this scope
[INFO] [stdout]   --> src/visitor.rs:75:42
[INFO] [stdout]    |
[INFO] [stdout] 75 |     fn anchor_from_sub_span(&self, span: Span, sub: &str) -> Result<VName, String> {
[INFO] [stdout]    |                                          ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `DefId` in this scope
[INFO] [stdout]    --> src/visitor.rs:119:40
[INFO] [stdout]     |
[INFO] [stdout] 119 |     fn vname_from_defid(&self, def_id: DefId) -> VName {
[INFO] [stdout]     |                                        ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `DefId` in this scope
[INFO] [stdout]    --> src/visitor.rs:132:71
[INFO] [stdout]     |
[INFO] [stdout] 132 |     fn function_call(&self, call_node_id: ast::NodeId, callee_def_id: DefId) {
[INFO] [stdout]     |                                                                       ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Span` in this scope
[INFO] [stdout]    --> src/visitor.rs:145:36
[INFO] [stdout]     |
[INFO] [stdout] 145 |     fn ref_def_id(&self, ref_span: Span, def_id: DefId) {
[INFO] [stdout]     |                                    ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `DefId` in this scope
[INFO] [stdout]    --> src/visitor.rs:145:50
[INFO] [stdout]     |
[INFO] [stdout] 145 |     fn ref_def_id(&self, ref_span: Span, def_id: DefId) {
[INFO] [stdout]     |                                                  ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Def` in this scope
[INFO] [stdout]    --> src/visitor.rs:152:37
[INFO] [stdout]     |
[INFO] [stdout] 152 |     fn opt_variant_did(&self, def: &Def) -> Option<DefId> {
[INFO] [stdout]     |                                     ^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `DefId` in this scope
[INFO] [stdout]    --> src/visitor.rs:152:52
[INFO] [stdout]     |
[INFO] [stdout] 44  | impl<'a, 'tcx> KytheVisitor<'a, 'tcx> {
[INFO] [stdout]     |              - help: you might be missing a type parameter: `, DefId`
[INFO] [stdout] ...
[INFO] [stdout] 152 |     fn opt_variant_did(&self, def: &Def) -> Option<DefId> {
[INFO] [stdout]     |                                                    ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Span` in this scope
[INFO] [stdout]    --> src/visitor.rs:199:25
[INFO] [stdout]     |
[INFO] [stdout] 199 | fn is_from_macro(span: &Span) -> bool {
[INFO] [stdout]     |                         ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0405]: cannot find trait `Visitor` in this scope
[INFO] [stdout]    --> src/visitor.rs:203:20
[INFO] [stdout]     |
[INFO] [stdout] 203 | impl<'v, 'tcx: 'v> Visitor<'v> for KytheVisitor<'v, 'tcx> {
[INFO] [stdout]     |                    ^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `ItemId` in this scope
[INFO] [stdout]    --> src/visitor.rs:205:41
[INFO] [stdout]     |
[INFO] [stdout] 205 |     fn visit_nested_item(&mut self, id: ItemId) {
[INFO] [stdout]     |                                         ^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Pat` in this scope
[INFO] [stdout]     --> src/visitor.rs:211:38
[INFO] [stdout]      |
[INFO] [stdout] 211  |       fn visit_pat(&mut self, pat: &'v Pat) {
[INFO] [stdout]      |                                        ^^^ help: a struct with a similar name exists: `Path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Block` in this scope
[INFO] [stdout]    --> src/visitor.rs:239:42
[INFO] [stdout]     |
[INFO] [stdout] 239 |     fn visit_block(&mut self, block: &'v Block) {
[INFO] [stdout]     |                                          ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Expr` in this scope
[INFO] [stdout]    --> src/visitor.rs:294:40
[INFO] [stdout]     |
[INFO] [stdout] 294 |     fn visit_expr(&mut self, expr: &'v Expr) {
[INFO] [stdout]     |                                        ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Span` in this scope
[INFO] [stdout]    --> src/visitor.rs:346:23
[INFO] [stdout]     |
[INFO] [stdout] 346 |                 span: Span,
[INFO] [stdout]     |                       ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `ImplItem` in this scope
[INFO] [stdout]    --> src/visitor.rs:374:50
[INFO] [stdout]     |
[INFO] [stdout] 374 |     fn visit_impl_item(&mut self, impl_item: &'v ImplItem) {
[INFO] [stdout]     |                                                  ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Span` in this scope
[INFO] [stdout]    --> src/visitor.rs:445:33
[INFO] [stdout]     |
[INFO] [stdout] 445 |                           span: Span) {
[INFO] [stdout]     |                                 ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Registry` in this scope
[INFO] [stdout]   --> src/lib.rs:40:35
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn plugin_registrar(reg: &mut Registry) {
[INFO] [stdout]    |                                   ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | #![feature(plugin_registrar)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | #![feature(slice_patterns, box_syntax, rustc_private)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: the feature `slice_patterns` has been stable since 1.42.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 47 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0405, E0412, E0433, E0463, E0554, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0405`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `kythe-indexer`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type dylib --crate-name kythe_indexer src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=5090007703a4105d -L dependency=/opt/rustwide/target/debug/deps --extern rustc_serialize=/opt/rustwide/target/debug/deps/librustc_serialize-8bfa9ab41fa1e22e.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "afaa95f1d770230f88e357d8dbf97dc7439cef100f46a5f95ac854917869ad29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "afaa95f1d770230f88e357d8dbf97dc7439cef100f46a5f95ac854917869ad29", kill_on_drop: false }`
[INFO] [stdout] afaa95f1d770230f88e357d8dbf97dc7439cef100f46a5f95ac854917869ad29