[INFO] fetching crate retworkx 0.8.0...
[INFO] checking retworkx-0.8.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate retworkx 0.8.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate retworkx 0.8.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-7-tc1/source/.cargo/config
[INFO] started tweaking crates.io crate retworkx 0.8.0
[INFO] finished tweaking crates.io crate retworkx 0.8.0
[INFO] tweaked toml for crates.io crate retworkx 0.8.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 60 packages
[INFO] [stderr]       Adding ahash v0.4.8 (latest: v0.8.11)
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding cfg-if v0.1.10 (latest: v1.0.0)
[INFO] [stderr]       Adding ctor v0.1.26 (latest: v0.2.7)
[INFO] [stderr]       Adding fixedbitset v0.2.0 (latest: v0.5.6)
[INFO] [stderr]       Adding hashbrown v0.9.1 (latest: v0.14.3)
[INFO] [stderr]       Adding hashbrown v0.12.3 (latest: v0.14.3)
[INFO] [stderr]       Adding indexmap v1.9.3 (latest: v2.2.6)
[INFO] [stderr]       Adding indoc v0.3.6 (latest: v2.0.5)
[INFO] [stderr]       Adding indoc-impl v0.3.6 (latest: v0.3.7)
[INFO] [stderr]       Adding inventory v0.1.11 (latest: v0.3.15)
[INFO] [stderr]       Adding matrixmultiply v0.2.4 (latest: v0.3.8)
[INFO] [stderr]       Adding ndarray v0.13.1 (latest: v0.15.6)
[INFO] [stderr]       Adding num-complex v0.2.4 (latest: v0.4.5)
[INFO] [stderr]       Adding numpy v0.12.2 (latest: v0.21.0)
[INFO] [stderr]       Adding parking_lot v0.11.2 (latest: v0.12.1)
[INFO] [stderr]       Adding parking_lot_core v0.8.6 (latest: v0.9.9)
[INFO] [stderr]       Adding paste v0.1.18 (latest: v1.0.14)
[INFO] [stderr]       Adding petgraph v0.5.1 (latest: v0.6.4)
[INFO] [stderr]       Adding pyo3 v0.12.4 (latest: v0.21.1)
[INFO] [stderr]       Adding pyo3-derive-backend v0.12.4 (latest: v0.12.5)
[INFO] [stderr]       Adding pyo3cls v0.12.4 (latest: v0.12.5)
[INFO] [stderr]       Adding redox_syscall v0.2.16 (latest: v0.5.1)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding unindent v0.1.11 (latest: v0.2.3)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pyo3cls v0.12.4
[INFO] [stderr]   Downloaded numpy v0.12.2
[INFO] [stderr]   Downloaded pyo3-derive-backend v0.12.4
[INFO] [stderr]   Downloaded ahash v0.4.8
[INFO] [stderr]   Downloaded pyo3 v0.12.4
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9ac88a21a4b10ac33295c54b6294ab5f063fbf551522447d7a02b44dd18b0388
[INFO] running `Command { std: "docker" "start" "-a" "9ac88a21a4b10ac33295c54b6294ab5f063fbf551522447d7a02b44dd18b0388", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9ac88a21a4b10ac33295c54b6294ab5f063fbf551522447d7a02b44dd18b0388", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ac88a21a4b10ac33295c54b6294ab5f063fbf551522447d7a02b44dd18b0388", kill_on_drop: false }`
[INFO] [stdout] 9ac88a21a4b10ac33295c54b6294ab5f063fbf551522447d7a02b44dd18b0388
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 857fb75266eb3def7f1a99af2f3bd1912f984a0fcc2768f51d35da62e92c5c07
[INFO] running `Command { std: "docker" "start" "-a" "857fb75266eb3def7f1a99af2f3bd1912f984a0fcc2768f51d35da62e92c5c07", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking ahash v0.4.8
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling pyo3 v0.12.4
[INFO] [stderr]    Compiling ndarray v0.13.1
[INFO] [stderr]     Checking fixedbitset v0.2.0
[INFO] [stderr]    Compiling pyo3-derive-backend v0.12.4
[INFO] [stderr]     Checking rand_pcg v0.3.1
[INFO] [stderr]     Checking matrixmultiply v0.2.4
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking petgraph v0.5.1
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]    Compiling pyo3cls v0.12.4
[INFO] [stderr]     Checking numpy v0.12.2
[INFO] [stderr]     Checking retworkx v0.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Python` is imported redundantly
[INFO] [stdout]   --> src/digraph.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | use pyo3::prelude::*;
[INFO] [stdout]    |     ---------------- the item `Python` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 30 | use pyo3::Python;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `EdgeIndex` is imported redundantly
[INFO] [stdout]   --> src/digraph.rs:36:23
[INFO] [stdout]    |
[INFO] [stdout] 36 | use petgraph::graph::{EdgeIndex, NodeIndex};
[INFO] [stdout]    |                       ^^^^^^^^^
[INFO] [stdout] 37 | use petgraph::prelude::*;
[INFO] [stdout]    |     -------------------- the item `EdgeIndex` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `NodeIndex` is imported redundantly
[INFO] [stdout]   --> src/digraph.rs:36:34
[INFO] [stdout]    |
[INFO] [stdout] 36 | use petgraph::graph::{EdgeIndex, NodeIndex};
[INFO] [stdout]    |                                  ^^^^^^^^^
[INFO] [stdout] 37 | use petgraph::prelude::*;
[INFO] [stdout]    |     -------------------- the item `NodeIndex` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `StableDiGraph` is imported redundantly
[INFO] [stdout]   --> src/digraph.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | use petgraph::prelude::*;
[INFO] [stdout]    |     -------------------- the item `StableDiGraph` is already imported here
[INFO] [stdout] 38 | use petgraph::stable_graph::StableDiGraph;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `StableUnGraph` is imported redundantly
[INFO] [stdout]   --> src/digraph.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | use petgraph::prelude::*;
[INFO] [stdout]    |     -------------------- the item `StableUnGraph` is already imported here
[INFO] [stdout] 38 | use petgraph::stable_graph::StableDiGraph;
[INFO] [stdout] 39 | use petgraph::stable_graph::StableUnGraph;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Python` is imported redundantly
[INFO] [stdout]   --> src/generators.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use pyo3::prelude::*;
[INFO] [stdout]    |     ---------------- the item `Python` is already imported here
[INFO] [stdout] 21 | use pyo3::wrap_pyfunction;
[INFO] [stdout] 22 | use pyo3::Python;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Python` is imported redundantly
[INFO] [stdout]   --> src/graph.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | use pyo3::prelude::*;
[INFO] [stdout]    |     ---------------- the item `Python` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 29 | use pyo3::Python;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `EdgeIndex` is imported redundantly
[INFO] [stdout]   --> src/graph.rs:38:23
[INFO] [stdout]    |
[INFO] [stdout] 38 | use petgraph::graph::{EdgeIndex, NodeIndex};
[INFO] [stdout]    |                       ^^^^^^^^^
[INFO] [stdout] 39 | use petgraph::prelude::*;
[INFO] [stdout]    |     -------------------- the item `EdgeIndex` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `NodeIndex` is imported redundantly
[INFO] [stdout]   --> src/graph.rs:38:34
[INFO] [stdout]    |
[INFO] [stdout] 38 | use petgraph::graph::{EdgeIndex, NodeIndex};
[INFO] [stdout]    |                                  ^^^^^^^^^
[INFO] [stdout] 39 | use petgraph::prelude::*;
[INFO] [stdout]    |     -------------------- the item `NodeIndex` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `StableUnGraph` is imported redundantly
[INFO] [stdout]   --> src/graph.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 39 | use petgraph::prelude::*;
[INFO] [stdout]    |     -------------------- the item `StableUnGraph` is already imported here
[INFO] [stdout] 40 | use petgraph::stable_graph::StableUnGraph;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Python` is imported redundantly
[INFO] [stdout]   --> src/union.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use pyo3::prelude::*;
[INFO] [stdout]    |     ---------------- the item `Python` is already imported here
[INFO] [stdout] 18 | use pyo3::Python;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Python` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | use pyo3::prelude::*;
[INFO] [stdout]    |     ---------------- the item `Python` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 36 | use pyo3::Python;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `NodeIndex` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 | use petgraph::graph::NodeIndex;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 40 | use petgraph::prelude::*;
[INFO] [stdout]    |     -------------------- the item `NodeIndex` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Bfs` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 40 | use petgraph::prelude::*;
[INFO] [stdout]    |     -------------------- the item `Bfs` is already imported here
[INFO] [stdout] 41 | use petgraph::visit::{
[INFO] [stdout] 42 |     Bfs, Data, GraphBase, GraphProp, IntoEdgeReferences, IntoNeighbors,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Distribution` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:49:27
[INFO] [stdout]    |
[INFO] [stdout] 49 | use rand::distributions::{Distribution, Uniform};
[INFO] [stdout]    |                           ^^^^^^^^^^^^
[INFO] [stdout] 50 | use rand::prelude::*;
[INFO] [stdout]    |     ---------------- the item `Distribution` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Python` is imported redundantly
[INFO] [stdout]   --> src/digraph.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | use pyo3::prelude::*;
[INFO] [stdout]    |     ---------------- the item `Python` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 30 | use pyo3::Python;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `EdgeIndex` is imported redundantly
[INFO] [stdout]   --> src/digraph.rs:36:23
[INFO] [stdout]    |
[INFO] [stdout] 36 | use petgraph::graph::{EdgeIndex, NodeIndex};
[INFO] [stdout]    |                       ^^^^^^^^^
[INFO] [stdout] 37 | use petgraph::prelude::*;
[INFO] [stdout]    |     -------------------- the item `EdgeIndex` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `NodeIndex` is imported redundantly
[INFO] [stdout]   --> src/digraph.rs:36:34
[INFO] [stdout]    |
[INFO] [stdout] 36 | use petgraph::graph::{EdgeIndex, NodeIndex};
[INFO] [stdout]    |                                  ^^^^^^^^^
[INFO] [stdout] 37 | use petgraph::prelude::*;
[INFO] [stdout]    |     -------------------- the item `NodeIndex` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `StableDiGraph` is imported redundantly
[INFO] [stdout]   --> src/digraph.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | use petgraph::prelude::*;
[INFO] [stdout]    |     -------------------- the item `StableDiGraph` is already imported here
[INFO] [stdout] 38 | use petgraph::stable_graph::StableDiGraph;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `StableUnGraph` is imported redundantly
[INFO] [stdout]   --> src/digraph.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | use petgraph::prelude::*;
[INFO] [stdout]    |     -------------------- the item `StableUnGraph` is already imported here
[INFO] [stdout] 38 | use petgraph::stable_graph::StableDiGraph;
[INFO] [stdout] 39 | use petgraph::stable_graph::StableUnGraph;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Python` is imported redundantly
[INFO] [stdout]   --> src/generators.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use pyo3::prelude::*;
[INFO] [stdout]    |     ---------------- the item `Python` is already imported here
[INFO] [stdout] 21 | use pyo3::wrap_pyfunction;
[INFO] [stdout] 22 | use pyo3::Python;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Python` is imported redundantly
[INFO] [stdout]   --> src/graph.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | use pyo3::prelude::*;
[INFO] [stdout]    |     ---------------- the item `Python` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 29 | use pyo3::Python;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `EdgeIndex` is imported redundantly
[INFO] [stdout]   --> src/graph.rs:38:23
[INFO] [stdout]    |
[INFO] [stdout] 38 | use petgraph::graph::{EdgeIndex, NodeIndex};
[INFO] [stdout]    |                       ^^^^^^^^^
[INFO] [stdout] 39 | use petgraph::prelude::*;
[INFO] [stdout]    |     -------------------- the item `EdgeIndex` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `NodeIndex` is imported redundantly
[INFO] [stdout]   --> src/graph.rs:38:34
[INFO] [stdout]    |
[INFO] [stdout] 38 | use petgraph::graph::{EdgeIndex, NodeIndex};
[INFO] [stdout]    |                                  ^^^^^^^^^
[INFO] [stdout] 39 | use petgraph::prelude::*;
[INFO] [stdout]    |     -------------------- the item `NodeIndex` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `StableUnGraph` is imported redundantly
[INFO] [stdout]   --> src/graph.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 39 | use petgraph::prelude::*;
[INFO] [stdout]    |     -------------------- the item `StableUnGraph` is already imported here
[INFO] [stdout] 40 | use petgraph::stable_graph::StableUnGraph;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Python` is imported redundantly
[INFO] [stdout]   --> src/union.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use pyo3::prelude::*;
[INFO] [stdout]    |     ---------------- the item `Python` is already imported here
[INFO] [stdout] 18 | use pyo3::Python;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Python` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | use pyo3::prelude::*;
[INFO] [stdout]    |     ---------------- the item `Python` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 36 | use pyo3::Python;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `NodeIndex` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 | use petgraph::graph::NodeIndex;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 40 | use petgraph::prelude::*;
[INFO] [stdout]    |     -------------------- the item `NodeIndex` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Bfs` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 40 | use petgraph::prelude::*;
[INFO] [stdout]    |     -------------------- the item `Bfs` is already imported here
[INFO] [stdout] 41 | use petgraph::visit::{
[INFO] [stdout] 42 |     Bfs, Data, GraphBase, GraphProp, IntoEdgeReferences, IntoNeighbors,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Distribution` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:49:27
[INFO] [stdout]    |
[INFO] [stdout] 49 | use rand::distributions::{Distribution, Uniform};
[INFO] [stdout]    |                           ^^^^^^^^^^^^
[INFO] [stdout] 50 | use rand::prelude::*;
[INFO] [stdout]    |     ---------------- the item `Distribution` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.43s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: pyo3 v0.12.4, pyo3-derive-backend v0.12.4
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "857fb75266eb3def7f1a99af2f3bd1912f984a0fcc2768f51d35da62e92c5c07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "857fb75266eb3def7f1a99af2f3bd1912f984a0fcc2768f51d35da62e92c5c07", kill_on_drop: false }`
[INFO] [stdout] 857fb75266eb3def7f1a99af2f3bd1912f984a0fcc2768f51d35da62e92c5c07
[INFO] checking retworkx-0.8.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate retworkx 0.8.0 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate retworkx 0.8.0 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-7-tc2/source/.cargo/config
[INFO] started tweaking crates.io crate retworkx 0.8.0
[INFO] finished tweaking crates.io crate retworkx 0.8.0
[INFO] tweaked toml for crates.io crate retworkx 0.8.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 60 packages
[INFO] [stderr]       Adding ahash v0.4.8 (latest: v0.8.11)
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding cfg-if v0.1.10 (latest: v1.0.0)
[INFO] [stderr]       Adding ctor v0.1.26 (latest: v0.2.7)
[INFO] [stderr]       Adding fixedbitset v0.2.0 (latest: v0.5.6)
[INFO] [stderr]       Adding hashbrown v0.9.1 (latest: v0.14.3)
[INFO] [stderr]       Adding hashbrown v0.12.3 (latest: v0.14.3)
[INFO] [stderr]       Adding indexmap v1.9.3 (latest: v2.2.6)
[INFO] [stderr]       Adding indoc v0.3.6 (latest: v2.0.5)
[INFO] [stderr]       Adding indoc-impl v0.3.6 (latest: v0.3.7)
[INFO] [stderr]       Adding inventory v0.1.11 (latest: v0.3.15)
[INFO] [stderr]       Adding matrixmultiply v0.2.4 (latest: v0.3.8)
[INFO] [stderr]       Adding ndarray v0.13.1 (latest: v0.15.6)
[INFO] [stderr]       Adding num-complex v0.2.4 (latest: v0.4.5)
[INFO] [stderr]       Adding numpy v0.12.2 (latest: v0.21.0)
[INFO] [stderr]       Adding parking_lot v0.11.2 (latest: v0.12.1)
[INFO] [stderr]       Adding parking_lot_core v0.8.6 (latest: v0.9.9)
[INFO] [stderr]       Adding paste v0.1.18 (latest: v1.0.14)
[INFO] [stderr]       Adding petgraph v0.5.1 (latest: v0.6.4)
[INFO] [stderr]       Adding pyo3 v0.12.4 (latest: v0.21.1)
[INFO] [stderr]       Adding pyo3-derive-backend v0.12.4 (latest: v0.12.5)
[INFO] [stderr]       Adding pyo3cls v0.12.4 (latest: v0.12.5)
[INFO] [stderr]       Adding redox_syscall v0.2.16 (latest: v0.5.1)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding unindent v0.1.11 (latest: v0.2.3)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 9890c4f40aa51efc358b75db94500fcf7cf60ab007de231988c5cda622541d7f
[INFO] running `Command { std: "docker" "start" "-a" "9890c4f40aa51efc358b75db94500fcf7cf60ab007de231988c5cda622541d7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9890c4f40aa51efc358b75db94500fcf7cf60ab007de231988c5cda622541d7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9890c4f40aa51efc358b75db94500fcf7cf60ab007de231988c5cda622541d7f", kill_on_drop: false }`
[INFO] [stdout] 9890c4f40aa51efc358b75db94500fcf7cf60ab007de231988c5cda622541d7f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 7da9eac5fcc8c1fea05ef87cdb4c0b2e5f7a00ec23e7936e09ad4dcad8f7860b
[INFO] running `Command { std: "docker" "start" "-a" "7da9eac5fcc8c1fea05ef87cdb4c0b2e5f7a00ec23e7936e09ad4dcad8f7860b", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling ndarray v0.13.1
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]     Checking ahash v0.4.8
[INFO] [stderr]    Compiling pyo3 v0.12.4
[INFO] [stderr]     Checking fixedbitset v0.2.0
[INFO] [stderr]    Compiling pyo3-derive-backend v0.12.4
[INFO] [stderr]     Checking rand_pcg v0.3.1
[INFO] [stderr]     Checking matrixmultiply v0.2.4
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking petgraph v0.5.1
[INFO] [stderr]    Compiling pyo3cls v0.12.4
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking numpy v0.12.2
[INFO] [stderr]     Checking retworkx v0.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Python` is imported redundantly
[INFO] [stdout]   --> src/digraph.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | use pyo3::prelude::*;
[INFO] [stdout]    |     ---------------- the item `Python` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 30 | use pyo3::Python;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `EdgeIndex` is imported redundantly
[INFO] [stdout]   --> src/digraph.rs:36:23
[INFO] [stdout]    |
[INFO] [stdout] 36 | use petgraph::graph::{EdgeIndex, NodeIndex};
[INFO] [stdout]    |                       ^^^^^^^^^
[INFO] [stdout] 37 | use petgraph::prelude::*;
[INFO] [stdout]    |     -------------------- the item `EdgeIndex` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `NodeIndex` is imported redundantly
[INFO] [stdout]   --> src/digraph.rs:36:34
[INFO] [stdout]    |
[INFO] [stdout] 36 | use petgraph::graph::{EdgeIndex, NodeIndex};
[INFO] [stdout]    |                                  ^^^^^^^^^
[INFO] [stdout] 37 | use petgraph::prelude::*;
[INFO] [stdout]    |     -------------------- the item `NodeIndex` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `StableDiGraph` is imported redundantly
[INFO] [stdout]   --> src/digraph.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | use petgraph::prelude::*;
[INFO] [stdout]    |     -------------------- the item `StableDiGraph` is already imported here
[INFO] [stdout] 38 | use petgraph::stable_graph::StableDiGraph;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `StableUnGraph` is imported redundantly
[INFO] [stdout]   --> src/digraph.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | use petgraph::prelude::*;
[INFO] [stdout]    |     -------------------- the item `StableUnGraph` is already imported here
[INFO] [stdout] 38 | use petgraph::stable_graph::StableDiGraph;
[INFO] [stdout] 39 | use petgraph::stable_graph::StableUnGraph;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Python` is imported redundantly
[INFO] [stdout]   --> src/generators.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use pyo3::prelude::*;
[INFO] [stdout]    |     ---------------- the item `Python` is already imported here
[INFO] [stdout] 21 | use pyo3::wrap_pyfunction;
[INFO] [stdout] 22 | use pyo3::Python;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Python` is imported redundantly
[INFO] [stdout]   --> src/graph.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | use pyo3::prelude::*;
[INFO] [stdout]    |     ---------------- the item `Python` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 29 | use pyo3::Python;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `EdgeIndex` is imported redundantly
[INFO] [stdout]   --> src/graph.rs:38:23
[INFO] [stdout]    |
[INFO] [stdout] 38 | use petgraph::graph::{EdgeIndex, NodeIndex};
[INFO] [stdout]    |                       ^^^^^^^^^
[INFO] [stdout] 39 | use petgraph::prelude::*;
[INFO] [stdout]    |     -------------------- the item `EdgeIndex` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `NodeIndex` is imported redundantly
[INFO] [stdout]   --> src/graph.rs:38:34
[INFO] [stdout]    |
[INFO] [stdout] 38 | use petgraph::graph::{EdgeIndex, NodeIndex};
[INFO] [stdout]    |                                  ^^^^^^^^^
[INFO] [stdout] 39 | use petgraph::prelude::*;
[INFO] [stdout]    |     -------------------- the item `NodeIndex` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `StableUnGraph` is imported redundantly
[INFO] [stdout]   --> src/graph.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 39 | use petgraph::prelude::*;
[INFO] [stdout]    |     -------------------- the item `StableUnGraph` is already imported here
[INFO] [stdout] 40 | use petgraph::stable_graph::StableUnGraph;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Python` is imported redundantly
[INFO] [stdout]   --> src/union.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use pyo3::prelude::*;
[INFO] [stdout]    |     ---------------- the item `Python` is already imported here
[INFO] [stdout] 18 | use pyo3::Python;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Python` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | use pyo3::prelude::*;
[INFO] [stdout]    |     ---------------- the item `Python` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 36 | use pyo3::Python;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `NodeIndex` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 | use petgraph::graph::NodeIndex;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 40 | use petgraph::prelude::*;
[INFO] [stdout]    |     -------------------- the item `NodeIndex` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Bfs` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 40 | use petgraph::prelude::*;
[INFO] [stdout]    |     -------------------- the item `Bfs` is already imported here
[INFO] [stdout] 41 | use petgraph::visit::{
[INFO] [stdout] 42 |     Bfs, Data, GraphBase, GraphProp, IntoEdgeReferences, IntoNeighbors,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Distribution` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:49:27
[INFO] [stdout]    |
[INFO] [stdout] 49 | use rand::distributions::{Distribution, Uniform};
[INFO] [stdout]    |                           ^^^^^^^^^^^^
[INFO] [stdout] 50 | use rand::prelude::*;
[INFO] [stdout]    |     ---------------- the item `Distribution` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Python` is imported redundantly
[INFO] [stdout]   --> src/digraph.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | use pyo3::prelude::*;
[INFO] [stdout]    |     ---------------- the item `Python` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 30 | use pyo3::Python;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `EdgeIndex` is imported redundantly
[INFO] [stdout]   --> src/digraph.rs:36:23
[INFO] [stdout]    |
[INFO] [stdout] 36 | use petgraph::graph::{EdgeIndex, NodeIndex};
[INFO] [stdout]    |                       ^^^^^^^^^
[INFO] [stdout] 37 | use petgraph::prelude::*;
[INFO] [stdout]    |     -------------------- the item `EdgeIndex` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `NodeIndex` is imported redundantly
[INFO] [stdout]   --> src/digraph.rs:36:34
[INFO] [stdout]    |
[INFO] [stdout] 36 | use petgraph::graph::{EdgeIndex, NodeIndex};
[INFO] [stdout]    |                                  ^^^^^^^^^
[INFO] [stdout] 37 | use petgraph::prelude::*;
[INFO] [stdout]    |     -------------------- the item `NodeIndex` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `StableDiGraph` is imported redundantly
[INFO] [stdout]   --> src/digraph.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | use petgraph::prelude::*;
[INFO] [stdout]    |     -------------------- the item `StableDiGraph` is already imported here
[INFO] [stdout] 38 | use petgraph::stable_graph::StableDiGraph;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `StableUnGraph` is imported redundantly
[INFO] [stdout]   --> src/digraph.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | use petgraph::prelude::*;
[INFO] [stdout]    |     -------------------- the item `StableUnGraph` is already imported here
[INFO] [stdout] 38 | use petgraph::stable_graph::StableDiGraph;
[INFO] [stdout] 39 | use petgraph::stable_graph::StableUnGraph;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Python` is imported redundantly
[INFO] [stdout]   --> src/generators.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use pyo3::prelude::*;
[INFO] [stdout]    |     ---------------- the item `Python` is already imported here
[INFO] [stdout] 21 | use pyo3::wrap_pyfunction;
[INFO] [stdout] 22 | use pyo3::Python;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Python` is imported redundantly
[INFO] [stdout]   --> src/graph.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | use pyo3::prelude::*;
[INFO] [stdout]    |     ---------------- the item `Python` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 29 | use pyo3::Python;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `EdgeIndex` is imported redundantly
[INFO] [stdout]   --> src/graph.rs:38:23
[INFO] [stdout]    |
[INFO] [stdout] 38 | use petgraph::graph::{EdgeIndex, NodeIndex};
[INFO] [stdout]    |                       ^^^^^^^^^
[INFO] [stdout] 39 | use petgraph::prelude::*;
[INFO] [stdout]    |     -------------------- the item `EdgeIndex` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `NodeIndex` is imported redundantly
[INFO] [stdout]   --> src/graph.rs:38:34
[INFO] [stdout]    |
[INFO] [stdout] 38 | use petgraph::graph::{EdgeIndex, NodeIndex};
[INFO] [stdout]    |                                  ^^^^^^^^^
[INFO] [stdout] 39 | use petgraph::prelude::*;
[INFO] [stdout]    |     -------------------- the item `NodeIndex` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `StableUnGraph` is imported redundantly
[INFO] [stdout]   --> src/graph.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 39 | use petgraph::prelude::*;
[INFO] [stdout]    |     -------------------- the item `StableUnGraph` is already imported here
[INFO] [stdout] 40 | use petgraph::stable_graph::StableUnGraph;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Python` is imported redundantly
[INFO] [stdout]   --> src/union.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use pyo3::prelude::*;
[INFO] [stdout]    |     ---------------- the item `Python` is already imported here
[INFO] [stdout] 18 | use pyo3::Python;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Python` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | use pyo3::prelude::*;
[INFO] [stdout]    |     ---------------- the item `Python` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 36 | use pyo3::Python;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `NodeIndex` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 | use petgraph::graph::NodeIndex;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 40 | use petgraph::prelude::*;
[INFO] [stdout]    |     -------------------- the item `NodeIndex` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Bfs` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 40 | use petgraph::prelude::*;
[INFO] [stdout]    |     -------------------- the item `Bfs` is already imported here
[INFO] [stdout] 41 | use petgraph::visit::{
[INFO] [stdout] 42 |     Bfs, Data, GraphBase, GraphProp, IntoEdgeReferences, IntoNeighbors,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Distribution` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:49:27
[INFO] [stdout]    |
[INFO] [stdout] 49 | use rand::distributions::{Distribution, Uniform};
[INFO] [stdout]    |                           ^^^^^^^^^^^^
[INFO] [stdout] 50 | use rand::prelude::*;
[INFO] [stdout]    |     ---------------- the item `Distribution` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.39s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: pyo3 v0.12.4, pyo3-derive-backend v0.12.4
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "7da9eac5fcc8c1fea05ef87cdb4c0b2e5f7a00ec23e7936e09ad4dcad8f7860b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7da9eac5fcc8c1fea05ef87cdb4c0b2e5f7a00ec23e7936e09ad4dcad8f7860b", kill_on_drop: false }`
[INFO] [stdout] 7da9eac5fcc8c1fea05ef87cdb4c0b2e5f7a00ec23e7936e09ad4dcad8f7860b