[INFO] cloning repository https://github.com/isubasinghe/diff-dataflow-examples
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
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[INFO] checking isubasinghe/diff-dataflow-examples against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fisubasinghe%2Fdiff-dataflow-examples" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
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[INFO] validating manifest of git repo https://github.com/isubasinghe/diff-dataflow-examples on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
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[INFO] crate git repo https://github.com/isubasinghe/diff-dataflow-examples already has a lockfile, it will not be regenerated
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[INFO] [stderr]   Downloaded differential-dataflow v0.10.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "818bcc62e68c7908383c5ede62d8748aa4d867bf656a1a364c45c7af753e1fe7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "818bcc62e68c7908383c5ede62d8748aa4d867bf656a1a364c45c7af753e1fe7", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f999a354ff450c3e97a31ec506fce4408d626ec8b874274a043ee99529fdde1d
[INFO] running `Command { std: "docker" "start" "-a" "f999a354ff450c3e97a31ec506fce4408d626ec8b874274a043ee99529fdde1d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking abomonation v0.7.3
[INFO] [stderr]     Checking timely_logging v0.10.0
[INFO] [stderr]     Checking timely_bytes v0.10.0
[INFO] [stderr]     Checking timely_sort v0.1.6
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking memmap v0.5.2
[INFO] [stderr]    Compiling abomonation_derive v0.3.0
[INFO] [stderr]     Checking graph_map v0.1.0
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling abomonation_derive v0.4.0
[INFO] [stderr]     Checking timely_communication v0.10.0
[INFO] [stderr]     Checking timely v0.10.0
[INFO] [stderr]     Checking differential-dataflow v0.10.0
[INFO] [stderr]     Checking graphs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `differential_dataflow::lattice::Lattice`
[INFO] [stdout]  --> src/bin/reachable.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use differential_dataflow::lattice::Lattice;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Collection`
[INFO] [stdout]  --> src/bin/reachable.rs:2:43
[INFO] [stdout]   |
[INFO] [stdout] 2 | use differential_dataflow::{AsCollection, Collection};
[INFO] [stdout]   |                                           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Edge`, `Iter`
[INFO] [stdout]  --> src/bin/reachable.rs:3:14
[INFO] [stdout]   |
[INFO] [stdout] 3 | use graphs::{Iter, Node, Edge};
[INFO] [stdout]   |              ^^^^        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `timely::dataflow::Scope`
[INFO] [stdout]  --> src/bin/reachable.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use timely::dataflow::Scope;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `differential_dataflow::operators::Iterate`
[INFO] [stdout]  --> src/bin/reachable.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use differential_dataflow::operators::Iterate;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `differential_dataflow::operators::join::Join`
[INFO] [stdout]  --> src/bin/reachable.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use differential_dataflow::operators::join::Join;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `differential_dataflow::operators::reduce::Threshold`
[INFO] [stdout]  --> src/bin/reachable.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use differential_dataflow::operators::reduce::Threshold;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `differential_dataflow::lattice::Lattice`
[INFO] [stdout]  --> src/bin/neighbourhood.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use differential_dataflow::lattice::Lattice;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `differential_dataflow::lattice::Lattice`
[INFO] [stdout]  --> src/bin/neighbourhood.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use differential_dataflow::lattice::Lattice;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `neighbours`
[INFO] [stdout]   --> src/bin/neighbourhood.rs:52:17
[INFO] [stdout]    |
[INFO] [stdout] 52 |             let neighbours = 
[INFO] [stdout]    |                 ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_neighbours`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `neighbourhoods` is never used
[INFO] [stdout]    --> src/bin/neighbourhood.rs:100:4
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn neighbourhoods<G>(edges: Collection<G, Edge<Node>>, source: Collection<G, (Node, Iter)>) -> Collection<G, (Node, Node)> 
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `neighbours`
[INFO] [stdout]   --> src/bin/neighbourhood.rs:52:17
[INFO] [stdout]    |
[INFO] [stdout] 52 |             let neighbours = 
[INFO] [stdout]    |                 ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_neighbours`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `neighbourhoods` is never used
[INFO] [stdout]    --> src/bin/neighbourhood.rs:100:4
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn neighbourhoods<G>(edges: Collection<G, Edge<Node>>, source: Collection<G, (Node, Iter)>) -> Collection<G, (Node, Node)> 
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `differential_dataflow::lattice::Lattice`
[INFO] [stdout]  --> src/bin/reachable.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use differential_dataflow::lattice::Lattice;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Collection`
[INFO] [stdout]  --> src/bin/reachable.rs:2:43
[INFO] [stdout]   |
[INFO] [stdout] 2 | use differential_dataflow::{AsCollection, Collection};
[INFO] [stdout]   |                                           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Edge`, `Iter`
[INFO] [stdout]  --> src/bin/reachable.rs:3:14
[INFO] [stdout]   |
[INFO] [stdout] 3 | use graphs::{Iter, Node, Edge};
[INFO] [stdout]   |              ^^^^        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `timely::dataflow::Scope`
[INFO] [stdout]  --> src/bin/reachable.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use timely::dataflow::Scope;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `differential_dataflow::operators::Iterate`
[INFO] [stdout]  --> src/bin/reachable.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use differential_dataflow::operators::Iterate;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `differential_dataflow::operators::join::Join`
[INFO] [stdout]  --> src/bin/reachable.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use differential_dataflow::operators::join::Join;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `differential_dataflow::operators::reduce::Threshold`
[INFO] [stdout]  --> src/bin/reachable.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use differential_dataflow::operators::reduce::Threshold;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 25.44s
[INFO] running `Command { std: "docker" "inspect" "f999a354ff450c3e97a31ec506fce4408d626ec8b874274a043ee99529fdde1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f999a354ff450c3e97a31ec506fce4408d626ec8b874274a043ee99529fdde1d", kill_on_drop: false }`
[INFO] [stdout] f999a354ff450c3e97a31ec506fce4408d626ec8b874274a043ee99529fdde1d
[INFO] checking isubasinghe/diff-dataflow-examples against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fisubasinghe%2Fdiff-dataflow-examples" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/isubasinghe/diff-dataflow-examples on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-1-tc2/source/.cargo/config
[INFO] started tweaking git repo https://github.com/isubasinghe/diff-dataflow-examples
[INFO] finished tweaking git repo https://github.com/isubasinghe/diff-dataflow-examples
[INFO] tweaked toml for git repo https://github.com/isubasinghe/diff-dataflow-examples written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/isubasinghe/diff-dataflow-examples 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b13b1e237f6e6239a16bb061e80b979c2a464d4238ac80939d044215153746dc
[INFO] running `Command { std: "docker" "start" "-a" "b13b1e237f6e6239a16bb061e80b979c2a464d4238ac80939d044215153746dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b13b1e237f6e6239a16bb061e80b979c2a464d4238ac80939d044215153746dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b13b1e237f6e6239a16bb061e80b979c2a464d4238ac80939d044215153746dc", kill_on_drop: false }`
[INFO] [stdout] b13b1e237f6e6239a16bb061e80b979c2a464d4238ac80939d044215153746dc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 345c95336e0fc1a9a36a0dfc1348baec7e28ac972ce1b4675a38e567975275cb
[INFO] running `Command { std: "docker" "start" "-a" "345c95336e0fc1a9a36a0dfc1348baec7e28ac972ce1b4675a38e567975275cb", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking timely_bytes v0.10.0
[INFO] [stderr]     Checking abomonation v0.7.3
[INFO] [stderr]     Checking timely_logging v0.10.0
[INFO] [stderr]     Checking timely_sort v0.1.6
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking memmap v0.5.2
[INFO] [stderr]    Compiling abomonation_derive v0.3.0
[INFO] [stderr]     Checking graph_map v0.1.0
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling abomonation_derive v0.4.0
[INFO] [stderr]     Checking timely_communication v0.10.0
[INFO] [stderr]     Checking timely v0.10.0
[INFO] [stderr]     Checking differential-dataflow v0.10.0
[INFO] [stderr]     Checking graphs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `differential_dataflow::lattice::Lattice`
[INFO] [stdout]  --> src/bin/reachable.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use differential_dataflow::lattice::Lattice;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Collection`
[INFO] [stdout]  --> src/bin/reachable.rs:2:43
[INFO] [stdout]   |
[INFO] [stdout] 2 | use differential_dataflow::{AsCollection, Collection};
[INFO] [stdout]   |                                           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Edge`, `Iter`
[INFO] [stdout]  --> src/bin/reachable.rs:3:14
[INFO] [stdout]   |
[INFO] [stdout] 3 | use graphs::{Iter, Node, Edge};
[INFO] [stdout]   |              ^^^^        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `timely::dataflow::Scope`
[INFO] [stdout]  --> src/bin/reachable.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use timely::dataflow::Scope;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `differential_dataflow::operators::Iterate`
[INFO] [stdout]  --> src/bin/reachable.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use differential_dataflow::operators::Iterate;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `differential_dataflow::operators::join::Join`
[INFO] [stdout]  --> src/bin/reachable.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use differential_dataflow::operators::join::Join;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `differential_dataflow::operators::reduce::Threshold`
[INFO] [stdout]  --> src/bin/reachable.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use differential_dataflow::operators::reduce::Threshold;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `differential_dataflow::lattice::Lattice`
[INFO] [stdout]  --> src/bin/neighbourhood.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use differential_dataflow::lattice::Lattice;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `differential_dataflow::lattice::Lattice`
[INFO] [stdout]  --> src/bin/reachable.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use differential_dataflow::lattice::Lattice;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `differential_dataflow::lattice::Lattice`
[INFO] [stdout]  --> src/bin/neighbourhood.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use differential_dataflow::lattice::Lattice;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Collection`
[INFO] [stdout]  --> src/bin/reachable.rs:2:43
[INFO] [stdout]   |
[INFO] [stdout] 2 | use differential_dataflow::{AsCollection, Collection};
[INFO] [stdout]   |                                           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Edge`, `Iter`
[INFO] [stdout]  --> src/bin/reachable.rs:3:14
[INFO] [stdout]   |
[INFO] [stdout] 3 | use graphs::{Iter, Node, Edge};
[INFO] [stdout]   |              ^^^^        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `timely::dataflow::Scope`
[INFO] [stdout]  --> src/bin/reachable.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use timely::dataflow::Scope;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `differential_dataflow::operators::Iterate`
[INFO] [stdout]  --> src/bin/reachable.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use differential_dataflow::operators::Iterate;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `differential_dataflow::operators::join::Join`
[INFO] [stdout]  --> src/bin/reachable.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use differential_dataflow::operators::join::Join;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `differential_dataflow::operators::reduce::Threshold`
[INFO] [stdout]  --> src/bin/reachable.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use differential_dataflow::operators::reduce::Threshold;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `neighbours`
[INFO] [stdout]   --> src/bin/neighbourhood.rs:52:17
[INFO] [stdout]    |
[INFO] [stdout] 52 |             let neighbours = 
[INFO] [stdout]    |                 ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_neighbours`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `neighbourhoods` is never used
[INFO] [stdout]    --> src/bin/neighbourhood.rs:100:4
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn neighbourhoods<G>(edges: Collection<G, Edge<Node>>, source: Collection<G, (Node, Iter)>) -> Collection<G, (Node, Node)> 
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `neighbours`
[INFO] [stdout]   --> src/bin/neighbourhood.rs:52:17
[INFO] [stdout]    |
[INFO] [stdout] 52 |             let neighbours = 
[INFO] [stdout]    |                 ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_neighbours`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `neighbourhoods` is never used
[INFO] [stdout]    --> src/bin/neighbourhood.rs:100:4
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn neighbourhoods<G>(edges: Collection<G, Edge<Node>>, source: Collection<G, (Node, Iter)>) -> Collection<G, (Node, Node)> 
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 23.93s
[INFO] running `Command { std: "docker" "inspect" "345c95336e0fc1a9a36a0dfc1348baec7e28ac972ce1b4675a38e567975275cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "345c95336e0fc1a9a36a0dfc1348baec7e28ac972ce1b4675a38e567975275cb", kill_on_drop: false }`
[INFO] [stdout] 345c95336e0fc1a9a36a0dfc1348baec7e28ac972ce1b4675a38e567975275cb