[INFO] fetching crate icentral-fast-brandes 0.1.0...
[INFO] checking icentral-fast-brandes-0.1.0 against master#d0835adc4e114eac911150b3692b830b5583223a for pr-149195-3
[INFO] extracting crate icentral-fast-brandes 0.1.0 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate icentral-fast-brandes 0.1.0
[INFO] finished tweaking crates.io crate icentral-fast-brandes 0.1.0
[INFO] tweaked toml for crates.io crate icentral-fast-brandes 0.1.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate icentral-fast-brandes 0.1.0 on toolchain d0835adc4e114eac911150b3692b830b5583223a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d0835adc4e114eac911150b3692b830b5583223a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate icentral-fast-brandes 0.1.0 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" "+d0835adc4e114eac911150b3692b830b5583223a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+d0835adc4e114eac911150b3692b830b5583223a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ded08c895c68430449dc0f7744d2344eda15470d7c6ef2976a27febb3b842247
[INFO] running `Command { std: "docker" "start" "-a" "ded08c895c68430449dc0f7744d2344eda15470d7c6ef2976a27febb3b842247", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ded08c895c68430449dc0f7744d2344eda15470d7c6ef2976a27febb3b842247", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ded08c895c68430449dc0f7744d2344eda15470d7c6ef2976a27febb3b842247", kill_on_drop: false }`
[INFO] [stdout] ded08c895c68430449dc0f7744d2344eda15470d7c6ef2976a27febb3b842247
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+d0835adc4e114eac911150b3692b830b5583223a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b58805a40603670822b57a7a9f9bc031fdf0b5abf4179b47a5d081d2d25d38a9
[INFO] running `Command { std: "docker" "start" "-a" "b58805a40603670822b57a7a9f9bc031fdf0b5abf4179b47a5d081d2d25d38a9", kill_on_drop: false }`
[INFO] [stderr]     Checking icentral-fast-brandes v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `icentral_graph_interface`
[INFO] [stdout]  --> src/imports.rs:7:16
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub(crate) use icentral_graph_interface::*;
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `icentral_graph_interface`
[INFO] [stdout]  --> src/imports.rs:7:16
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub(crate) use icentral_graph_interface::*;
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/fast_brandes.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let mut component = Component::new_from_graph_ref(graph, "fast_brandes_bc::component");
[INFO] [stdout]    |         ----^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/fast_brandes.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let mut component = Component::new_from_graph_ref(graph, "fast_brandes_bc::component");
[INFO] [stdout]    |         ----^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/fast_brandes.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 | /         brandes_iter(
[INFO] [stdout] 48 | |             &mut scores, 
[INFO] [stdout] 49 | |             component.clone(), 
[INFO] [stdout] 50 | |             source, 
[INFO] [stdout] 51 | |             &mut workspace
[INFO] [stdout] 52 | |         );
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[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] 47 |         let _ = brandes_iter(
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/fast_brandes.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 | /         brandes_iter(
[INFO] [stdout] 48 | |             &mut scores, 
[INFO] [stdout] 49 | |             component.clone(), 
[INFO] [stdout] 50 | |             source, 
[INFO] [stdout] 51 | |             &mut workspace
[INFO] [stdout] 52 | |         );
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[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] 47 |         let _ = brandes_iter(
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.98s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: icentral-neighbors v0.1.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 8`
[INFO] running `Command { std: "docker" "inspect" "b58805a40603670822b57a7a9f9bc031fdf0b5abf4179b47a5d081d2d25d38a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b58805a40603670822b57a7a9f9bc031fdf0b5abf4179b47a5d081d2d25d38a9", kill_on_drop: false }`
[INFO] [stdout] b58805a40603670822b57a7a9f9bc031fdf0b5abf4179b47a5d081d2d25d38a9