[INFO] fetching crate chalk-solve 0.104.0...
[INFO] testing chalk-solve-0.104.0 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7
[INFO] extracting crate chalk-solve 0.104.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate chalk-solve 0.104.0
[INFO] finished tweaking crates.io crate chalk-solve 0.104.0
[INFO] tweaked toml for crates.io crate chalk-solve 0.104.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate chalk-solve 0.104.0 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate chalk-solve 0.104.0 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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c4acb13fbe6828313ef78d5f77b3570d136556b9cdaacd41f6c16acb03768eb0
[INFO] running `Command { std: "docker" "start" "-a" "c4acb13fbe6828313ef78d5f77b3570d136556b9cdaacd41f6c16acb03768eb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c4acb13fbe6828313ef78d5f77b3570d136556b9cdaacd41f6c16acb03768eb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4acb13fbe6828313ef78d5f77b3570d136556b9cdaacd41f6c16acb03768eb0", kill_on_drop: false }`
[INFO] [stdout] c4acb13fbe6828313ef78d5f77b3570d136556b9cdaacd41f6c16acb03768eb0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1f60e1603cc8b311496871cad3247192e0dc778fb5678f3b90282d3bd62ee3b8
[INFO] running `Command { std: "docker" "start" "-a" "1f60e1603cc8b311496871cad3247192e0dc778fb5678f3b90282d3bd62ee3b8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling once_cell v1.18.0
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]    Compiling log v0.4.20
[INFO] [stderr]    Compiling pin-project-lite v0.2.13
[INFO] [stderr]    Compiling hashbrown v0.14.2
[INFO] [stderr]    Compiling smallvec v1.11.2
[INFO] [stderr]    Compiling nu-ansi-term v0.49.0
[INFO] [stderr]    Compiling bitflags v2.4.1
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling sharded-slab v0.1.7
[INFO] [stderr]    Compiling either v1.9.0
[INFO] [stderr]    Compiling ena v0.14.2
[INFO] [stderr]    Compiling itertools v0.12.0
[INFO] [stderr]    Compiling tracing-core v0.1.32
[INFO] [stderr]    Compiling thread_local v1.1.7
[INFO] [stderr]    Compiling tracing-log v0.2.0
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.39
[INFO] [stderr]    Compiling indexmap v2.1.0
[INFO] [stderr]    Compiling matchers v0.1.0
[INFO] [stderr]    Compiling petgraph v0.6.4
[INFO] [stderr]    Compiling regex-automata v0.4.3
[INFO] [stderr]    Compiling regex v1.10.2
[INFO] [stderr]    Compiling synstructure v0.13.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling chalk-derive v0.104.0
[INFO] [stderr]    Compiling chalk-ir v0.104.0
[INFO] [stderr]    Compiling tracing v0.1.40
[INFO] [stderr]    Compiling tracing-subscriber v0.3.18
[INFO] [stderr]    Compiling tracing-tree v0.3.0
[INFO] [stderr]    Compiling chalk-solve v0.104.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]   --> src/clauses/builtin_traits/unsize.rs:70:5
[INFO] [stdout]    |
[INFO] [stdout] 70 |     v.visit_with(&mut visitor, DebruijnIndex::INNERMOST);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 70 |     let _ = v.visit_with(&mut visitor, DebruijnIndex::INNERMOST);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]   --> src/clauses/env_elaborator.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     in_clauses.visit_with(&mut elaborater, DebruijnIndex::INNERMOST);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let _ = in_clauses.visit_with(&mut elaborater, DebruijnIndex::INNERMOST);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]   --> src/infer/ucanonicalize.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 | /         value0.value.visit_with(
[INFO] [stdout] 27 | |             &mut UCollector {
[INFO] [stdout] 28 | |                 universes: &mut universes,
[INFO] [stdout] 29 | |                 interner,
[INFO] [stdout] 30 | |             },
[INFO] [stdout] 31 | |             DebruijnIndex::INNERMOST,
[INFO] [stdout] 32 | |         );
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let _ = value0.value.visit_with(
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]   --> src/logging_db/id_collector.rs:47:17
[INFO] [stdout]    |
[INFO] [stdout] 47 | /                 collector
[INFO] [stdout] 48 | |                     .db
[INFO] [stdout] 49 | |                     .adt_datum(adt_id)
[INFO] [stdout] 50 | |                     .visit_with(&mut collector, DebruijnIndex::INNERMOST);
[INFO] [stdout]    | |_________________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 47 |                 let _ = collector
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]   --> src/logging_db/id_collector.rs:53:17
[INFO] [stdout]    |
[INFO] [stdout] 53 | /                 collector
[INFO] [stdout] 54 | |                     .db
[INFO] [stdout] 55 | |                     .fn_def_datum(fn_def)
[INFO] [stdout] 56 | |                     .visit_with(&mut collector, DebruijnIndex::INNERMOST);
[INFO] [stdout]    | |_________________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 53 |                 let _ = collector
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]   --> src/logging_db/id_collector.rs:62:17
[INFO] [stdout]    |
[INFO] [stdout] 62 |                 trait_datum.visit_with(&mut collector, DebruijnIndex::INNERMOST);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 62 |                 let _ = trait_datum.visit_with(&mut collector, DebruijnIndex::INNERMOST);
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]   --> src/logging_db/id_collector.rs:65:21
[INFO] [stdout]    |
[INFO] [stdout] 65 | /                     assoc_ty_datum
[INFO] [stdout] 66 | |                         .bounds_on_self(collector.db.interner())
[INFO] [stdout] 67 | |                         .visit_with(&mut collector, DebruijnIndex::INNERMOST);
[INFO] [stdout]    | |_____________________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 65 |                     let _ = assoc_ty_datum
[INFO] [stdout]    |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]   --> src/logging_db/id_collector.rs:68:21
[INFO] [stdout]    |
[INFO] [stdout] 68 |                     assoc_ty_datum.visit_with(&mut collector, DebruijnIndex::INNERMOST);
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 68 |                     let _ = assoc_ty_datum.visit_with(&mut collector, DebruijnIndex::INNERMOST);
[INFO] [stdout]    |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]   --> src/logging_db/id_collector.rs:72:17
[INFO] [stdout]    |
[INFO] [stdout] 72 | /                 collector
[INFO] [stdout] 73 | |                     .db
[INFO] [stdout] 74 | |                     .opaque_ty_data(opaque_id)
[INFO] [stdout] 75 | |                     .visit_with(&mut collector, DebruijnIndex::INNERMOST);
[INFO] [stdout]    | |_________________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 72 |                 let _ = collector
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]   --> src/logging_db/id_collector.rs:76:17
[INFO] [stdout]    |
[INFO] [stdout] 76 | /                 collector
[INFO] [stdout] 77 | |                     .db
[INFO] [stdout] 78 | |                     .hidden_opaque_type(opaque_id)
[INFO] [stdout] 79 | |                     .visit_with(&mut collector, DebruijnIndex::INNERMOST);
[INFO] [stdout]    | |_________________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 76 |                 let _ = collector
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]   --> src/logging_db/id_collector.rs:85:21
[INFO] [stdout]    |
[INFO] [stdout] 85 |                     assoc_ty_value.visit_with(&mut collector, DebruijnIndex::INNERMOST);
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 85 |                     let _ = assoc_ty_value.visit_with(&mut collector, DebruijnIndex::INNERMOST);
[INFO] [stdout]    |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]   --> src/logging_db/id_collector.rs:87:17
[INFO] [stdout]    |
[INFO] [stdout] 87 |                 impl_datum.visit_with(&mut collector, DebruijnIndex::INNERMOST);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 87 |                 let _ = impl_datum.visit_with(&mut collector, DebruijnIndex::INNERMOST);
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]   --> src/solve/truncate.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     value.visit_with(&mut visitor, DebruijnIndex::INNERMOST);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let _ = value.visit_with(&mut visitor, DebruijnIndex::INNERMOST);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]   --> src/solve/truncate.rs:63:13
[INFO] [stdout]    |
[INFO] [stdout] 63 |             normalized_ty.visit_with(self, outer_binder);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 63 |             let _ = normalized_ty.visit_with(self, outer_binder);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]   --> src/solve/truncate.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |         ty.super_visit_with(self, outer_binder);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let _ = ty.super_visit_with(self, outer_binder);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]   --> src/wf.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |         value.visit_with(&mut collector, DebruijnIndex::INNERMOST);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let _ = value.visit_with(&mut collector, DebruijnIndex::INNERMOST);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]    --> src/wf.rs:109:17
[INFO] [stdout]     |
[INFO] [stdout] 109 |                 id.visit_with(self, outer_binder);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 109 |                 let _ = id.visit_with(self, outer_binder);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]    --> src/wf.rs:114:17
[INFO] [stdout]     |
[INFO] [stdout] 114 |                 assoc_ty.visit_with(self, outer_binder);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 114 |                 let _ = assoc_ty.visit_with(self, outer_binder);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]    --> src/wf.rs:127:17
[INFO] [stdout]     |
[INFO] [stdout] 127 |                 arity.visit_with(self, outer_binder);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 127 |                 let _ = arity.visit_with(self, outer_binder);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]    --> src/wf.rs:132:17
[INFO] [stdout]     |
[INFO] [stdout] 132 |                 opaque_ty.visit_with(self, outer_binder);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 132 |                 let _ = opaque_ty.visit_with(self, outer_binder);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]    --> src/wf.rs:141:17
[INFO] [stdout]     |
[INFO] [stdout] 141 |                 fn_def.visit_with(self, outer_binder);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 141 |                 let _ = fn_def.visit_with(self, outer_binder);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]    --> src/wf.rs:146:17
[INFO] [stdout]     |
[INFO] [stdout] 146 |                 mutability.visit_with(self, outer_binder);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 146 |                 let _ = mutability.visit_with(self, outer_binder);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]    --> src/wf.rs:147:17
[INFO] [stdout]     |
[INFO] [stdout] 147 |                 lifetime.visit_with(self, outer_binder);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 147 |                 let _ = lifetime.visit_with(self, outer_binder);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]    --> src/wf.rs:152:17
[INFO] [stdout]     |
[INFO] [stdout] 152 |                 mutability.visit_with(self, outer_binder);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 152 |                 let _ = mutability.visit_with(self, outer_binder);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]    --> src/wf.rs:161:17
[INFO] [stdout]     |
[INFO] [stdout] 161 |                 ty.visit_with(self, outer_binder);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 161 |                 let _ = ty.visit_with(self, outer_binder);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.89s
[INFO] running `Command { std: "docker" "inspect" "1f60e1603cc8b311496871cad3247192e0dc778fb5678f3b90282d3bd62ee3b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f60e1603cc8b311496871cad3247192e0dc778fb5678f3b90282d3bd62ee3b8", kill_on_drop: false }`
[INFO] [stdout] 1f60e1603cc8b311496871cad3247192e0dc778fb5678f3b90282d3bd62ee3b8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 190e7f50d2cffd4e1156866b465eb1eee39152f500453afe5e9f5288a751fe3e
[INFO] running `Command { std: "docker" "start" "-a" "190e7f50d2cffd4e1156866b465eb1eee39152f500453afe5e9f5288a751fe3e", kill_on_drop: false }`
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]   --> src/clauses/builtin_traits/unsize.rs:70:5
[INFO] [stdout]    |
[INFO] [stdout] 70 |     v.visit_with(&mut visitor, DebruijnIndex::INNERMOST);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 70 |     let _ = v.visit_with(&mut visitor, DebruijnIndex::INNERMOST);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]   --> src/clauses/env_elaborator.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     in_clauses.visit_with(&mut elaborater, DebruijnIndex::INNERMOST);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let _ = in_clauses.visit_with(&mut elaborater, DebruijnIndex::INNERMOST);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]   --> src/infer/ucanonicalize.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 | /         value0.value.visit_with(
[INFO] [stdout] 27 | |             &mut UCollector {
[INFO] [stdout] 28 | |                 universes: &mut universes,
[INFO] [stdout] 29 | |                 interner,
[INFO] [stdout] 30 | |             },
[INFO] [stdout] 31 | |             DebruijnIndex::INNERMOST,
[INFO] [stdout] 32 | |         );
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let _ = value0.value.visit_with(
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]   --> src/logging_db/id_collector.rs:47:17
[INFO] [stdout]    |
[INFO] [stdout] 47 | /                 collector
[INFO] [stdout] 48 | |                     .db
[INFO] [stdout] 49 | |                     .adt_datum(adt_id)
[INFO] [stdout] 50 | |                     .visit_with(&mut collector, DebruijnIndex::INNERMOST);
[INFO] [stdout]    | |_________________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 47 |                 let _ = collector
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]   --> src/logging_db/id_collector.rs:53:17
[INFO] [stdout]    |
[INFO] [stdout] 53 | /                 collector
[INFO] [stdout] 54 | |                     .db
[INFO] [stdout] 55 | |                     .fn_def_datum(fn_def)
[INFO] [stdout] 56 | |                     .visit_with(&mut collector, DebruijnIndex::INNERMOST);
[INFO] [stdout]    | |_________________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 53 |                 let _ = collector
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]   --> src/logging_db/id_collector.rs:62:17
[INFO] [stdout]    |
[INFO] [stdout] 62 |                 trait_datum.visit_with(&mut collector, DebruijnIndex::INNERMOST);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 62 |                 let _ = trait_datum.visit_with(&mut collector, DebruijnIndex::INNERMOST);
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]   --> src/logging_db/id_collector.rs:65:21
[INFO] [stdout]    |
[INFO] [stdout] 65 | /                     assoc_ty_datum
[INFO] [stdout] 66 | |                         .bounds_on_self(collector.db.interner())
[INFO] [stdout] 67 | |                         .visit_with(&mut collector, DebruijnIndex::INNERMOST);
[INFO] [stdout]    | |_____________________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 65 |                     let _ = assoc_ty_datum
[INFO] [stdout]    |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]   --> src/logging_db/id_collector.rs:68:21
[INFO] [stdout]    |
[INFO] [stdout] 68 |                     assoc_ty_datum.visit_with(&mut collector, DebruijnIndex::INNERMOST);
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 68 |                     let _ = assoc_ty_datum.visit_with(&mut collector, DebruijnIndex::INNERMOST);
[INFO] [stdout]    |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]   --> src/logging_db/id_collector.rs:72:17
[INFO] [stdout]    |
[INFO] [stdout] 72 | /                 collector
[INFO] [stdout] 73 | |                     .db
[INFO] [stdout] 74 | |                     .opaque_ty_data(opaque_id)
[INFO] [stdout] 75 | |                     .visit_with(&mut collector, DebruijnIndex::INNERMOST);
[INFO] [stdout]    | |_________________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 72 |                 let _ = collector
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]   --> src/logging_db/id_collector.rs:76:17
[INFO] [stdout]    |
[INFO] [stdout] 76 | /                 collector
[INFO] [stdout] 77 | |                     .db
[INFO] [stdout] 78 | |                     .hidden_opaque_type(opaque_id)
[INFO] [stdout] 79 | |                     .visit_with(&mut collector, DebruijnIndex::INNERMOST);
[INFO] [stdout]    | |_________________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 76 |                 let _ = collector
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]   --> src/logging_db/id_collector.rs:85:21
[INFO] [stdout]    |
[INFO] [stdout] 85 |                     assoc_ty_value.visit_with(&mut collector, DebruijnIndex::INNERMOST);
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 85 |                     let _ = assoc_ty_value.visit_with(&mut collector, DebruijnIndex::INNERMOST);
[INFO] [stdout]    |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]   --> src/logging_db/id_collector.rs:87:17
[INFO] [stdout]    |
[INFO] [stdout] 87 |                 impl_datum.visit_with(&mut collector, DebruijnIndex::INNERMOST);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 87 |                 let _ = impl_datum.visit_with(&mut collector, DebruijnIndex::INNERMOST);
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]   --> src/solve/truncate.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     value.visit_with(&mut visitor, DebruijnIndex::INNERMOST);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let _ = value.visit_with(&mut visitor, DebruijnIndex::INNERMOST);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]   --> src/solve/truncate.rs:63:13
[INFO] [stdout]    |
[INFO] [stdout] 63 |             normalized_ty.visit_with(self, outer_binder);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 63 |             let _ = normalized_ty.visit_with(self, outer_binder);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]   --> src/solve/truncate.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |         ty.super_visit_with(self, outer_binder);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let _ = ty.super_visit_with(self, outer_binder);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]   --> src/wf.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |         value.visit_with(&mut collector, DebruijnIndex::INNERMOST);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let _ = value.visit_with(&mut collector, DebruijnIndex::INNERMOST);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]    --> src/wf.rs:109:17
[INFO] [stdout]     |
[INFO] [stdout] 109 |                 id.visit_with(self, outer_binder);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 109 |                 let _ = id.visit_with(self, outer_binder);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]    --> src/wf.rs:114:17
[INFO] [stdout]     |
[INFO] [stdout] 114 |                 assoc_ty.visit_with(self, outer_binder);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 114 |                 let _ = assoc_ty.visit_with(self, outer_binder);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]    --> src/wf.rs:127:17
[INFO] [stdout]     |
[INFO] [stdout] 127 |                 arity.visit_with(self, outer_binder);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 127 |                 let _ = arity.visit_with(self, outer_binder);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]    --> src/wf.rs:132:17
[INFO] [stdout]     |
[INFO] [stdout] 132 |                 opaque_ty.visit_with(self, outer_binder);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 132 |                 let _ = opaque_ty.visit_with(self, outer_binder);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]    --> src/wf.rs:141:17
[INFO] [stdout]     |
[INFO] [stdout] 141 |                 fn_def.visit_with(self, outer_binder);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 141 |                 let _ = fn_def.visit_with(self, outer_binder);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]    --> src/wf.rs:146:17
[INFO] [stdout]     |
[INFO] [stdout] 146 |                 mutability.visit_with(self, outer_binder);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 146 |                 let _ = mutability.visit_with(self, outer_binder);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]    --> src/wf.rs:147:17
[INFO] [stdout]     |
[INFO] [stdout] 147 |                 lifetime.visit_with(self, outer_binder);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 147 |                 let _ = lifetime.visit_with(self, outer_binder);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]    --> src/wf.rs:152:17
[INFO] [stdout]     |
[INFO] [stdout] 152 |                 mutability.visit_with(self, outer_binder);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 152 |                 let _ = mutability.visit_with(self, outer_binder);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]    --> src/wf.rs:161:17
[INFO] [stdout]     |
[INFO] [stdout] 161 |                 ty.visit_with(self, outer_binder);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 161 |                 let _ = ty.visit_with(self, outer_binder);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling chalk-solve v0.104.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `chalk_integration`
[INFO] [stdout]  --> src/infer/test.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use chalk_integration::interner::ChalkIr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `chalk_integration`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `chalk_integration`, use `cargo add chalk_integration` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `chalk_integration`
[INFO] [stdout]  --> src/infer/test.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use chalk_integration::{arg, lifetime, ty};
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `chalk_integration`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `chalk_integration`, use `cargo add chalk_integration` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `chalk_integration`
[INFO] [stdout]   --> src/solve/truncate.rs:94:13
[INFO] [stdout]    |
[INFO] [stdout] 94 |         use chalk_integration::interner::ChalkIr;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `chalk_integration`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `chalk_integration`, use `cargo add chalk_integration` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `chalk_integration`
[INFO] [stdout]    --> src/solve/truncate.rs:113:13
[INFO] [stdout]     |
[INFO] [stdout] 113 |         use chalk_integration::interner::ChalkIr;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `chalk_integration`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `chalk_integration`, use `cargo add chalk_integration` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `chalk_integration`
[INFO] [stdout]   --> src/solve/truncate.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 |     use chalk_integration::{arg, ty};
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `chalk_integration`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `chalk_integration`, use `cargo add chalk_integration` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `chalk_integration`
[INFO] [stdout]   --> src/solve/truncate.rs:96:42
[INFO] [stdout]    |
[INFO] [stdout] 96 |         let mut table = InferenceTable::<chalk_integration::interner::ChalkIr>::new();
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `chalk_integration`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `chalk_integration`, use `cargo add chalk_integration` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `chalk_integration`
[INFO] [stdout]    --> src/solve/truncate.rs:115:42
[INFO] [stdout]     |
[INFO] [stdout] 115 |         let mut table = InferenceTable::<chalk_integration::interner::ChalkIr>::new();
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `chalk_integration`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `chalk_integration`, use `cargo add chalk_integration` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `chalk-solve` (lib test) due to 7 previous errors
[INFO] running `Command { std: "docker" "inspect" "190e7f50d2cffd4e1156866b465eb1eee39152f500453afe5e9f5288a751fe3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "190e7f50d2cffd4e1156866b465eb1eee39152f500453afe5e9f5288a751fe3e", kill_on_drop: false }`
[INFO] [stdout] 190e7f50d2cffd4e1156866b465eb1eee39152f500453afe5e9f5288a751fe3e