[INFO] fetching crate almost-raft 0.2.1...
[INFO] building almost-raft-0.2.1 against master#881c1ac408d93bb7adaa3a51dabab9266e82eee8 for issue-85264
[INFO] extracting crate almost-raft 0.2.1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate almost-raft 0.2.1 on toolchain 881c1ac408d93bb7adaa3a51dabab9266e82eee8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate almost-raft 0.2.1
[INFO] finished tweaking crates.io crate almost-raft 0.2.1
[INFO] tweaked toml for crates.io crate almost-raft 0.2.1 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e36464e2c78f8dd69917f801c5335e1568e8b21b654fbd414fba6258c461a741
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e36464e2c78f8dd69917f801c5335e1568e8b21b654fbd414fba6258c461a741", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e36464e2c78f8dd69917f801c5335e1568e8b21b654fbd414fba6258c461a741", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e36464e2c78f8dd69917f801c5335e1568e8b21b654fbd414fba6258c461a741", kill_on_drop: false }`
[INFO] [stdout] e36464e2c78f8dd69917f801c5335e1568e8b21b654fbd414fba6258c461a741
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ffa00810d06f9a9fb45a771e24e274ed0e62ffa1c4c82bbee1fb1e53a02e3c39
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ffa00810d06f9a9fb45a771e24e274ed0e62ffa1c4c82bbee1fb1e53a02e3c39", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]    Compiling tokio v1.6.1
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling tokio-macros v1.2.0
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling futures-macro v0.3.15
[INFO] [stderr]    Compiling async-trait v0.1.50
[INFO] [stderr]    Compiling tokio-stream v0.1.6
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling almost-raft v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.18s
[INFO] running `Command { std: "docker" "inspect" "ffa00810d06f9a9fb45a771e24e274ed0e62ffa1c4c82bbee1fb1e53a02e3c39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffa00810d06f9a9fb45a771e24e274ed0e62ffa1c4c82bbee1fb1e53a02e3c39", kill_on_drop: false }`
[INFO] [stdout] ffa00810d06f9a9fb45a771e24e274ed0e62ffa1c4c82bbee1fb1e53a02e3c39
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] da94b636cf5306cc4991364c6e6f541ba0a46e55ea4086d90fec9b12c352e36f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "da94b636cf5306cc4991364c6e6f541ba0a46e55ea4086d90fec9b12c352e36f", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling tracing-core v0.1.18
[INFO] [stderr]    Compiling sharded-slab v0.1.1
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling regex-automata v0.1.9
[INFO] [stderr]    Compiling tracing-log v0.1.2
[INFO] [stderr]    Compiling tracing v0.1.26
[INFO] [stderr]    Compiling tracing-serde v0.1.2
[INFO] [stderr]    Compiling matchers v0.0.1
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling tracing-subscriber v0.2.18
[INFO] [stderr]    Compiling almost-raft v0.2.1 (/opt/rustwide/workdir)
[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: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 15.84s
[INFO] running `Command { std: "docker" "inspect" "da94b636cf5306cc4991364c6e6f541ba0a46e55ea4086d90fec9b12c352e36f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da94b636cf5306cc4991364c6e6f541ba0a46e55ea4086d90fec9b12c352e36f", kill_on_drop: false }`
[INFO] [stdout] da94b636cf5306cc4991364c6e6f541ba0a46e55ea4086d90fec9b12c352e36f
