[INFO] fetching crate almost-raft 0.3.0...
[INFO] checking almost-raft-0.3.0 against try#264a7c4a1c917c83d13895a31231f9d93c7b67e1 for pr-132289
[INFO] extracting crate almost-raft 0.3.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate almost-raft 0.3.0 on toolchain 264a7c4a1c917c83d13895a31231f9d93c7b67e1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+264a7c4a1c917c83d13895a31231f9d93c7b67e1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate almost-raft 0.3.0
[INFO] finished tweaking crates.io crate almost-raft 0.3.0
[INFO] tweaked toml for crates.io crate almost-raft 0.3.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+264a7c4a1c917c83d13895a31231f9d93c7b67e1" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 90 packages to latest compatible versions
[INFO] [stderr]       Adding tracing-subscriber v0.2.25 (available: v0.3.18)
[INFO] [stderr]       Adding uuid v0.8.2 (available: v1.11.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+264a7c4a1c917c83d13895a31231f9d93c7b67e1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+264a7c4a1c917c83d13895a31231f9d93c7b67e1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1ac3c0b6392122faca4e3246d614c7654b521d84b6101fc25b767064b0da72c5
[INFO] running `Command { std: "docker" "start" "-a" "1ac3c0b6392122faca4e3246d614c7654b521d84b6101fc25b767064b0da72c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1ac3c0b6392122faca4e3246d614c7654b521d84b6101fc25b767064b0da72c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ac3c0b6392122faca4e3246d614c7654b521d84b6101fc25b767064b0da72c5", kill_on_drop: false }`
[INFO] [stdout] 1ac3c0b6392122faca4e3246d614c7654b521d84b6101fc25b767064b0da72c5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+264a7c4a1c917c83d13895a31231f9d93c7b67e1" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2fc2ce10232cf409fe4b6b5816e0f03f9e01396e83097692b88c309b801918fc
[INFO] running `Command { std: "docker" "start" "-a" "2fc2ce10232cf409fe4b6b5816e0f03f9e01396e83097692b88c309b801918fc", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.85
[INFO] [stderr]     Checking regex-syntax v0.6.29
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]     Checking regex-automata v0.4.8
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking chrono v0.4.38
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking tracing-log v0.1.4
[INFO] [stderr]     Checking regex v1.11.1
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.214
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling tokio-macros v2.4.0
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling async-trait v0.1.83
[INFO] [stderr]     Checking tokio v1.41.0
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking tokio-stream v0.1.16
[INFO] [stderr]     Checking serde v1.0.214
[INFO] [stderr]     Checking serde_json v1.0.132
[INFO] [stderr]     Checking tracing-serde v0.1.3
[INFO] [stderr]     Checking almost-raft v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `incoming_tx` is never read
[INFO] [stdout]   --> src/election/mod.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct RaftElectionState<T> {
[INFO] [stdout]    |            ----------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 30 |     incoming_tx: Sender<Message<T>>,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RaftElectionState` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking tracing-subscriber v0.2.25
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/election/mod.rs:515:39
[INFO] [stdout]     |
[INFO] [stdout] 515 |             Duration::from_millis($ex);
[INFO] [stdout]     |                                       ^
[INFO] [stdout] ...
[INFO] [stdout] 561 |         advance(d!(timeout)).await;
[INFO] [stdout]     |                 ----------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: `#[warn(semicolon_in_expressions_from_macros)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `d` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/election/mod.rs:515:39
[INFO] [stdout]     |
[INFO] [stdout] 515 |             Duration::from_millis($ex);
[INFO] [stdout]     |                                       ^
[INFO] [stdout] ...
[INFO] [stdout] 570 |         advance(d!(timeout)).await;
[INFO] [stdout]     |                 ----------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: this warning originates in the macro `d` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/election/mod.rs:515:39
[INFO] [stdout]     |
[INFO] [stdout] 515 |             Duration::from_millis($ex);
[INFO] [stdout]     |                                       ^
[INFO] [stdout] ...
[INFO] [stdout] 580 |         advance(d!(timeout)).await;
[INFO] [stdout]     |                 ----------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: this warning originates in the macro `d` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/election/mod.rs:515:39
[INFO] [stdout]     |
[INFO] [stdout] 515 |             Duration::from_millis($ex);
[INFO] [stdout]     |                                       ^
[INFO] [stdout] ...
[INFO] [stdout] 620 |         advance(d!(timeout)).await;
[INFO] [stdout]     |                 ----------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: this warning originates in the macro `d` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/election/mod.rs:515:39
[INFO] [stdout]     |
[INFO] [stdout] 515 |             Duration::from_millis($ex);
[INFO] [stdout]     |                                       ^
[INFO] [stdout] ...
[INFO] [stdout] 693 |         advance(d!(timeout)).await;
[INFO] [stdout]     |                 ----------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: this warning originates in the macro `d` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/election/mod.rs:515:39
[INFO] [stdout]     |
[INFO] [stdout] 515 |             Duration::from_millis($ex);
[INFO] [stdout]     |                                       ^
[INFO] [stdout] ...
[INFO] [stdout] 708 |         advance(d!(timeout)).await;
[INFO] [stdout]     |                 ----------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: this warning originates in the macro `d` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/election/mod.rs:515:39
[INFO] [stdout]     |
[INFO] [stdout] 515 |             Duration::from_millis($ex);
[INFO] [stdout]     |                                       ^
[INFO] [stdout] ...
[INFO] [stdout] 829 |         tokio::time::sleep(d!(85)).await;
[INFO] [stdout]     |                            ------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: this warning originates in the macro `d` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `incoming_tx` is never read
[INFO] [stdout]   --> src/election/mod.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct RaftElectionState<T> {
[INFO] [stdout]    |            ----------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 30 |     incoming_tx: Sender<Message<T>>,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RaftElectionState` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/election/mod.rs:530:13
[INFO] [stdout]     |
[INFO] [stdout] 530 |             self.sender.send(msg).await;
[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)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 530 |             let _ = self.sender.send(msg).await;
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/election/mod.rs:566:9
[INFO] [stdout]     |
[INFO] [stdout] 566 |         tx.send(Message::ControlAddNode(dummy)).await;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 566 |         let _ = tx.send(Message::ControlAddNode(dummy)).await;
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/election/mod.rs:568:9
[INFO] [stdout]     |
[INFO] [stdout] 568 |         tx.send(Message::ControlAddNode(dummy)).await;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 568 |         let _ = tx.send(Message::ControlAddNode(dummy)).await;
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/election/mod.rs:578:9
[INFO] [stdout]     |
[INFO] [stdout] 578 |         tx.send(Message::ControlAddNode(dummy)).await;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 578 |         let _ = tx.send(Message::ControlAddNode(dummy)).await;
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/election/mod.rs:631:9
[INFO] [stdout]     |
[INFO] [stdout] 631 | /         tx_to_raft
[INFO] [stdout] 632 | |             .send(Message::RequestVoteResponse {
[INFO] [stdout] 633 | |                 vote: true,
[INFO] [stdout] 634 | |                 term: 1,
[INFO] [stdout] 635 | |             })
[INFO] [stdout] 636 | |             .await;
[INFO] [stdout]     | |__________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 631 |         let _ = tx_to_raft
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/election/mod.rs:637:9
[INFO] [stdout]     |
[INFO] [stdout] 637 | /         tx_to_raft
[INFO] [stdout] 638 | |             .send(Message::RequestVoteResponse {
[INFO] [stdout] 639 | |                 vote: true,
[INFO] [stdout] 640 | |                 term: 1,
[INFO] [stdout] 641 | |             })
[INFO] [stdout] 642 | |             .await;
[INFO] [stdout]     | |__________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 637 |         let _ = tx_to_raft
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/election/mod.rs:643:9
[INFO] [stdout]     |
[INFO] [stdout] 643 | /         tx_to_raft
[INFO] [stdout] 644 | |             .send(Message::RequestVoteResponse {
[INFO] [stdout] 645 | |                 vote: true,
[INFO] [stdout] 646 | |                 term: 1,
[INFO] [stdout] 647 | |             })
[INFO] [stdout] 648 | |             .await;
[INFO] [stdout]     | |__________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 643 |         let _ = tx_to_raft
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/election/mod.rs:701:9
[INFO] [stdout]     |
[INFO] [stdout] 701 | /         tx_to_raft
[INFO] [stdout] 702 | |             .send(Message::RequestVoteResponse {
[INFO] [stdout] 703 | |                 vote: true,
[INFO] [stdout] 704 | |                 term: 1,
[INFO] [stdout] 705 | |             })
[INFO] [stdout] 706 | |             .await;
[INFO] [stdout]     | |__________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 701 |         let _ = tx_to_raft
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/election/mod.rs:730:13
[INFO] [stdout]     |
[INFO] [stdout] 730 | /             tx_to_raft
[INFO] [stdout] 731 | |                 .send(Message::RequestVoteResponse {
[INFO] [stdout] 732 | |                     vote: true,
[INFO] [stdout] 733 | |                     term: 2,
[INFO] [stdout] 734 | |                 })
[INFO] [stdout] 735 | |                 .await;
[INFO] [stdout]     | |______________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 730 |             let _ = tx_to_raft
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/election/mod.rs:791:9
[INFO] [stdout]     |
[INFO] [stdout] 791 | /         tx_to_raft_node_1
[INFO] [stdout] 792 | |             .send(Message::ControlAddNode(new_node(
[INFO] [stdout] 793 | |                 self_id_2.as_str(),
[INFO] [stdout] 794 | |                 tx_to_raft_node_2.clone(),
[INFO] [stdout] 795 | |             )))
[INFO] [stdout] 796 | |             .await;
[INFO] [stdout]     | |__________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 791 |         let _ = tx_to_raft_node_1
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/election/mod.rs:797:9
[INFO] [stdout]     |
[INFO] [stdout] 797 | /         tx_to_raft_node_1
[INFO] [stdout] 798 | |             .send(Message::ControlAddNode(new_node(
[INFO] [stdout] 799 | |                 self_id_3.as_str(),
[INFO] [stdout] 800 | |                 tx_to_raft_node_3.clone(),
[INFO] [stdout] 801 | |             )))
[INFO] [stdout] 802 | |             .await;
[INFO] [stdout]     | |__________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 797 |         let _ = tx_to_raft_node_1
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/election/mod.rs:804:9
[INFO] [stdout]     |
[INFO] [stdout] 804 | /         tx_to_raft_node_2
[INFO] [stdout] 805 | |             .send(Message::ControlAddNode(new_node(
[INFO] [stdout] 806 | |                 self_id_1.as_str(),
[INFO] [stdout] 807 | |                 tx_to_raft_node_1.clone(),
[INFO] [stdout] 808 | |             )))
[INFO] [stdout] 809 | |             .await;
[INFO] [stdout]     | |__________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 804 |         let _ = tx_to_raft_node_2
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/election/mod.rs:810:9
[INFO] [stdout]     |
[INFO] [stdout] 810 | /         tx_to_raft_node_2
[INFO] [stdout] 811 | |             .send(Message::ControlAddNode(new_node(
[INFO] [stdout] 812 | |                 self_id_3.as_str(),
[INFO] [stdout] 813 | |                 tx_to_raft_node_3.clone(),
[INFO] [stdout] 814 | |             )))
[INFO] [stdout] 815 | |             .await;
[INFO] [stdout]     | |__________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 810 |         let _ = tx_to_raft_node_2
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/election/mod.rs:816:9
[INFO] [stdout]     |
[INFO] [stdout] 816 | /         tx_to_raft_node_3
[INFO] [stdout] 817 | |             .send(Message::ControlAddNode(new_node(
[INFO] [stdout] 818 | |                 self_id_1.as_str(),
[INFO] [stdout] 819 | |                 tx_to_raft_node_1.clone(),
[INFO] [stdout] 820 | |             )))
[INFO] [stdout] 821 | |             .await;
[INFO] [stdout]     | |__________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 816 |         let _ = tx_to_raft_node_3
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/election/mod.rs:822:9
[INFO] [stdout]     |
[INFO] [stdout] 822 | /         tx_to_raft_node_3
[INFO] [stdout] 823 | |             .send(Message::ControlAddNode(new_node(
[INFO] [stdout] 824 | |                 self_id_2.as_str(),
[INFO] [stdout] 825 | |                 tx_to_raft_node_2.clone(),
[INFO] [stdout] 826 | |             )))
[INFO] [stdout] 827 | |             .await;
[INFO] [stdout]     | |__________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 822 |         let _ = tx_to_raft_node_3
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.06s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: almost-raft v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "2fc2ce10232cf409fe4b6b5816e0f03f9e01396e83097692b88c309b801918fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fc2ce10232cf409fe4b6b5816e0f03f9e01396e83097692b88c309b801918fc", kill_on_drop: false }`
[INFO] [stdout] 2fc2ce10232cf409fe4b6b5816e0f03f9e01396e83097692b88c309b801918fc
