[INFO] fetching crate rustc_utils 0.14.3-nightly-2025-08-20...
[INFO] testing rustc_utils-0.14.3-nightly-2025-08-20 against master#caccb4d0368bd918ef6668af8e13834d07040417 for pr-146098-1
[INFO] extracting crate rustc_utils 0.14.3-nightly-2025-08-20 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate rustc_utils 0.14.3-nightly-2025-08-20
[INFO] finished tweaking crates.io crate rustc_utils 0.14.3-nightly-2025-08-20
[INFO] tweaked toml for crates.io crate rustc_utils 0.14.3-nightly-2025-08-20 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rustc_utils 0.14.3-nightly-2025-08-20 on toolchain caccb4d0368bd918ef6668af8e13834d07040417
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rustc_utils 0.14.3-nightly-2025-08-20 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded textwrap v0.16.2
[INFO] [stderr]   Downloaded smawk v0.3.2
[INFO] [stderr]   Downloaded unicode-linebreak v0.1.5
[INFO] [stderr]   Downloaded ts-rs v7.1.1
[INFO] [stderr]   Downloaded windows-targets v0.53.4
[INFO] [stderr]   Downloaded serde v1.0.227
[INFO] [stderr]   Downloaded env_logger v0.9.3
[INFO] [stderr]   Downloaded anyhow v1.0.100
[INFO] [stderr]   Downloaded indexical v0.9.3
[INFO] [stderr]   Downloaded serde_core v1.0.227
[INFO] [stderr]   Downloaded serde_derive v1.0.227
[INFO] [stderr]   Downloaded test-log-macros v0.2.18
[INFO] [stderr]   Downloaded test-log v0.2.18
[INFO] [stderr]   Downloaded ts-rs-macros v7.1.1
[INFO] [stderr]   Downloaded intervaltree v0.2.7
[INFO] [stderr]   Downloaded index_vec v0.1.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d7d896255664bf57079df372632a03ffa1331ef4516c0f8a88435d2714cc0da8
[INFO] running `Command { std: "docker" "start" "-a" "d7d896255664bf57079df372632a03ffa1331ef4516c0f8a88435d2714cc0da8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d7d896255664bf57079df372632a03ffa1331ef4516c0f8a88435d2714cc0da8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7d896255664bf57079df372632a03ffa1331ef4516c0f8a88435d2714cc0da8", kill_on_drop: false }`
[INFO] [stdout] d7d896255664bf57079df372632a03ffa1331ef4516c0f8a88435d2714cc0da8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2b2d84071e69df8350a6c8017fcdeb7e9e1c8a7822d4a813c525e6215765f7f4
[INFO] running `Command { std: "docker" "start" "-a" "2b2d84071e69df8350a6c8017fcdeb7e9e1c8a7822d4a813c525e6215765f7f4", kill_on_drop: false }`
[INFO] [stderr]    Compiling anyhow v1.0.100
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling log v0.4.28
[INFO] [stderr]    Compiling cfg-if v1.0.3
[INFO] [stderr]    Compiling intervaltree v0.2.7
[INFO] [stderr]    Compiling rustc_utils v0.14.3-nightly-2025-08-20 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `either`
[INFO] [stdout]   --> src/lib.rs:41:1
[INFO] [stdout]    |
[INFO] [stdout] 41 | extern crate either;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `rustc_abi`
[INFO] [stdout]   --> src/lib.rs:42:1
[INFO] [stdout]    |
[INFO] [stdout] 42 | extern crate rustc_abi;
[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 `rustc_borrowck`
[INFO] [stdout]   --> src/lib.rs:43:1
[INFO] [stdout]    |
[INFO] [stdout] 43 | extern crate rustc_borrowck;
[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 `rustc_data_structures`
[INFO] [stdout]   --> src/lib.rs:44:1
[INFO] [stdout]    |
[INFO] [stdout] 44 | extern crate rustc_data_structures;
[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 `rustc_driver`
[INFO] [stdout]   --> src/lib.rs:45:1
[INFO] [stdout]    |
[INFO] [stdout] 45 | extern crate rustc_driver;
[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 `rustc_errors`
[INFO] [stdout]   --> src/lib.rs:46:1
[INFO] [stdout]    |
[INFO] [stdout] 46 | extern crate rustc_errors;
[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 `rustc_graphviz`
[INFO] [stdout]   --> src/lib.rs:47:1
[INFO] [stdout]    |
[INFO] [stdout] 47 | extern crate rustc_graphviz;
[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 `rustc_hir`
[INFO] [stdout]   --> src/lib.rs:48:1
[INFO] [stdout]    |
[INFO] [stdout] 48 | extern crate rustc_hir;
[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 `rustc_index`
[INFO] [stdout]   --> src/lib.rs:49:1
[INFO] [stdout]    |
[INFO] [stdout] 49 | extern crate rustc_index;
[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 `rustc_infer`
[INFO] [stdout]   --> src/lib.rs:50:1
[INFO] [stdout]    |
[INFO] [stdout] 50 | extern crate rustc_infer;
[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 `rustc_interface`
[INFO] [stdout]   --> src/lib.rs:51:1
[INFO] [stdout]    |
[INFO] [stdout] 51 | extern crate rustc_interface;
[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 `rustc_lint_defs`
[INFO] [stdout]   --> src/lib.rs:52:1
[INFO] [stdout]    |
[INFO] [stdout] 52 | extern crate rustc_lint_defs;
[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 `rustc_macros`
[INFO] [stdout]   --> src/lib.rs:53:1
[INFO] [stdout]    |
[INFO] [stdout] 53 | extern crate rustc_macros;
[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 `rustc_middle`
[INFO] [stdout]   --> src/lib.rs:54:1
[INFO] [stdout]    |
[INFO] [stdout] 54 | extern crate rustc_middle;
[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 `rustc_mir_dataflow`
[INFO] [stdout]   --> src/lib.rs:55:1
[INFO] [stdout]    |
[INFO] [stdout] 55 | extern crate rustc_mir_dataflow;
[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 `rustc_mir_transform`
[INFO] [stdout]   --> src/lib.rs:56:1
[INFO] [stdout]    |
[INFO] [stdout] 56 | extern crate rustc_mir_transform;
[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 `rustc_serialize`
[INFO] [stdout]   --> src/lib.rs:57:1
[INFO] [stdout]    |
[INFO] [stdout] 57 | extern crate rustc_serialize;
[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 `rustc_session`
[INFO] [stdout]   --> src/lib.rs:58:1
[INFO] [stdout]    |
[INFO] [stdout] 58 | extern crate rustc_session;
[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 `rustc_span`
[INFO] [stdout]   --> src/lib.rs:59:1
[INFO] [stdout]    |
[INFO] [stdout] 59 | extern crate rustc_span;
[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 `rustc_target`
[INFO] [stdout]   --> src/lib.rs:60:1
[INFO] [stdout]    |
[INFO] [stdout] 60 | extern crate rustc_target;
[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 `rustc_trait_selection`
[INFO] [stdout]   --> src/lib.rs:61:1
[INFO] [stdout]    |
[INFO] [stdout] 61 | extern crate rustc_trait_selection;
[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 `rustc_type_ir`
[INFO] [stdout]   --> src/lib.rs:62:1
[INFO] [stdout]    |
[INFO] [stdout] 62 | extern crate rustc_type_ir;
[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 `smallvec`
[INFO] [stdout]   --> src/lib.rs:63:1
[INFO] [stdout]    |
[INFO] [stdout] 63 | extern crate smallvec;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `super::filename::FilenameIndex`
[INFO] [stdout]   --> src/source_map/range.rs:20:33
[INFO] [stdout]    |
[INFO] [stdout] 20 | use super::filename::{Filename, FilenameIndex};
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^ no `FilenameIndex` in `source_map::filename`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `PlaceExt`
[INFO] [stdout]   --> src/source_map/spanner/mir_span.rs:15:22
[INFO] [stdout]    |
[INFO] [stdout] 15 | use crate::{BodyExt, PlaceExt, SpanExt, mir::location_or_arg::LocationOrArg};
[INFO] [stdout]    |                      ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0220]: associated type `Node` not found for `G`
[INFO] [stdout]   --> src/mir/control_dependencies.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 |   exit: G::Node,
[INFO] [stdout]    |            ^^^^ associated type `Node` not found
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0223]: ambiguous associated type
[INFO] [stdout]   --> src/mir/control_dependencies.rs:36:27
[INFO] [stdout]    |
[INFO] [stdout] 36 |   fn start_node(&self) -> Self::Node {
[INFO] [stdout]    |                           ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: if there were a trait named `Example` with associated type `Node` implemented for `ReversedGraph<'_, G>`, you could use the fully-qualified path
[INFO] [stdout]    |
[INFO] [stdout] 36 -   fn start_node(&self) -> Self::Node {
[INFO] [stdout] 36 +   fn start_node(&self) -> <ReversedGraph<'_, G> as Example>::Node {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0223]: ambiguous associated type
[INFO] [stdout]   --> src/mir/control_dependencies.rs:42:30
[INFO] [stdout]    |
[INFO] [stdout] 42 |   fn successors(&self, node: Self::Node) -> impl Iterator<Item = Self::Node> {
[INFO] [stdout]    |                              ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: if there were a trait named `Example` with associated type `Node` implemented for `ReversedGraph<'_, G>`, you could use the fully-qualified path
[INFO] [stdout]    |
[INFO] [stdout] 42 -   fn successors(&self, node: Self::Node) -> impl Iterator<Item = Self::Node> {
[INFO] [stdout] 42 +   fn successors(&self, node: <ReversedGraph<'_, G> as Example>::Node) -> impl Iterator<Item = Self::Node> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0223]: ambiguous associated type
[INFO] [stdout]   --> src/mir/control_dependencies.rs:56:32
[INFO] [stdout]    |
[INFO] [stdout] 56 |   fn predecessors(&self, node: Self::Node) -> impl Iterator<Item = Self::Node> {
[INFO] [stdout]    |                                ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: if there were a trait named `Example` with associated type `Node` implemented for `ReversedGraph<'_, G>`, you could use the fully-qualified path
[INFO] [stdout]    |
[INFO] [stdout] 56 -   fn predecessors(&self, node: Self::Node) -> impl Iterator<Item = Self::Node> {
[INFO] [stdout] 56 +   fn predecessors(&self, node: <ReversedGraph<'_, G> as Example>::Node) -> impl Iterator<Item = Self::Node> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0223]: ambiguous associated type
[INFO] [stdout]    --> src/mir/place.rs:599:59
[INFO] [stdout]     |
[INFO] [stdout] 599 |   fn visit_region(&mut self, region: ty::Region<'tcx>) -> Self::Result {
[INFO] [stdout]     |                                                           ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: if there were a trait named `Example` with associated type `Result` implemented for `RegionVisitor<'tcx, Dispatcher>`, you could use the fully-qualified path
[INFO] [stdout]     |
[INFO] [stdout] 599 -   fn visit_region(&mut self, region: ty::Region<'tcx>) -> Self::Result {
[INFO] [stdout] 599 +   fn visit_region(&mut self, region: ty::Region<'tcx>) -> <RegionVisitor<'tcx, Dispatcher> as Example>::Result {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0220, E0223, E0432, E0463.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0220`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustc_utils` (lib) due to 29 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "2b2d84071e69df8350a6c8017fcdeb7e9e1c8a7822d4a813c525e6215765f7f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b2d84071e69df8350a6c8017fcdeb7e9e1c8a7822d4a813c525e6215765f7f4", kill_on_drop: false }`
[INFO] [stdout] 2b2d84071e69df8350a6c8017fcdeb7e9e1c8a7822d4a813c525e6215765f7f4