[INFO] cloning repository https://github.com/hridambasu/hack-movement
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hridambasu/hack-movement" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhridambasu%2Fhack-movement", kill_on_drop: false }`
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f92550153c15492ffbeb3cefb21cbb91f13ea5fd
[INFO] building hridambasu/hack-movement against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhridambasu%2Fhack-movement" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/hridambasu/hack-movement
[INFO] finished tweaking git repo https://github.com/hridambasu/hack-movement
[INFO] tweaked toml for git repo https://github.com/hridambasu/hack-movement written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/hridambasu/hack-movement on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/hridambasu/hack-movement already has a lockfile, it will not be regenerated
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[INFO] [stderr]    Compiling mini-chain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/mini_chain/chain.rs:5:73
[INFO] [stdout]   |
[INFO] [stdout] 5 | use super::metadata::{BlockchainMetadata, BlockchainMetadataOperations, self};
[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 imports: `Rng` and `distributions::Standard`
[INFO] [stdout]  --> src/mini_chain/chain.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | use rand::{Rng, distributions::Standard};
[INFO] [stdout]   |            ^^^  ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stream`
[INFO] [stdout]  --> src/mini_chain/chain.rs:9:34
[INFO] [stdout]   |
[INFO] [stdout] 9 | use futures::stream::{BoxStream, Stream, StreamExt};
[INFO] [stdout]   |                                  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::hash_map::DefaultHasher`
[INFO] [stdout]   --> src/mini_chain/chain.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::collections::hash_map::DefaultHasher;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Hasher`
[INFO] [stdout]   --> src/mini_chain/chain.rs:13:23
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::hash::{Hash, Hasher};
[INFO] [stdout]    |                       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `info` and `instrument`
[INFO] [stdout]   --> src/mini_chain/chain.rs:14:15
[INFO] [stdout]    |
[INFO] [stdout] 14 | use tracing::{instrument, info};
[INFO] [stdout]    |               ^^^^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Receiver`
[INFO] [stdout]  --> src/mini_chain/client.rs:5:29
[INFO] [stdout]   |
[INFO] [stdout] 5 | use async_channel::{Sender, Receiver};
[INFO] [stdout]   |                             ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]  --> src/mini_chain/node.rs:2:34
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::{BTreeSet, HashSet, HashMap};
[INFO] [stdout]   |                                  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]   --> src/mini_chain/node.rs:14:18
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Transaction, self
[INFO] [stdout]    |                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::sync::mpsc`
[INFO] [stdout]   --> src/mini_chain/node.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | use tokio::sync::mpsc;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::stream::FuturesUnordered`
[INFO] [stdout]  --> src/network.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use futures::stream::FuturesUnordered;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::time::sleep`
[INFO] [stdout]  --> src/network.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tokio::time::sleep;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tracing::info`
[INFO] [stdout]  --> src/network.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tracing::info;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> src/network.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::mini_chain::metadata`
[INFO] [stdout]   --> src/network.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use crate::mini_chain::metadata;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `FullNode`
[INFO] [stdout]   --> src/network.rs:14:22
[INFO] [stdout]    |
[INFO] [stdout] 14 |     ChannelFullNode, FullNode
[INFO] [stdout]    |                      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::sync::mpsc`
[INFO] [stdout]   --> src/network.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use tokio::sync::mpsc;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/lib.rs:67:25
[INFO] [stdout]    |
[INFO] [stdout] 62 | /                         loop {
[INFO] [stdout] 63 | |                             let transaction = Transaction::random_now(rng);
[INFO] [stdout] 64 | |                             client.submit_transaction(transaction).await?;
[INFO] [stdout] 65 | |                             tokio::time::sleep(Duration::from_millis(client_delay)).await;
[INFO] [stdout] 66 | |                         }
[INFO] [stdout]    | |_________________________- any code following this expression is unreachable
[INFO] [stdout] 67 |                           Ok::<(), String>(())
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/lib.rs:75:25
[INFO] [stdout]    |
[INFO] [stdout] 70 | /                         loop {
[INFO] [stdout] 71 | |                             tokio::time::sleep(Duration::from_secs(1)).await;
[INFO] [stdout] ...  |
[INFO] [stdout] 74 | |                         }
[INFO] [stdout]    | |_________________________- any code following this expression is unreachable
[INFO] [stdout] 75 |                           Ok::<(), String>(())
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:101:25
[INFO] [stdout]     |
[INFO] [stdout]  78 | /                         loop {
[INFO] [stdout]  79 | |                             {
[INFO] [stdout]  80 | |                                 let now = SystemTime::now()
[INFO] [stdout]  81 | |                                     .duration_since(UNIX_EPOCH)
[INFO] [stdout] ...   |
[INFO] [stdout]  99 | |                             )).await; 
[INFO] [stdout] 100 | |                         }
[INFO] [stdout]     | |_________________________- any code following this expression is unreachable
[INFO] [stdout] 101 |                           Ok::<(), String>(())
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Hash`
[INFO] [stdout]   --> src/mini_chain/chain.rs:13:17
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::hash::{Hash, Hasher};
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::SinkExt`
[INFO] [stdout]   --> src/mini_chain/chain.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use futures::SinkExt;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/mini_chain/block.rs:289:13
[INFO] [stdout]     |
[INFO] [stdout] 289 |         let mut transactions = BTreeSet::new();
[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/mini_chain/node.rs:695:13
[INFO] [stdout]     |
[INFO] [stdout] 695 |         let mut rx = self.synchronizer_request_receiver.clone();
[INFO] [stdout]     |             ----^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/mini_chain/node.rs:807:13
[INFO] [stdout]     |
[INFO] [stdout] 807 |         let mut rx = self.mempool_transaction_receiver.clone();
[INFO] [stdout]     |             ----^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/mini_chain/chain.rs:692:14
[INFO] [stdout]     |
[INFO] [stdout] 692 |         let (mut tx, rx) = tokio::sync::mpsc::channel::<Result<Transaction, String>>(32);
[INFO] [stdout]     |              ----^^
[INFO] [stdout]     |              |
[INFO] [stdout]     |              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/mini_chain/node.rs:545:13
[INFO] [stdout]     |
[INFO] [stdout] 545 |         let mut rx = self.mined_block_receiver.clone();
[INFO] [stdout]     |             ----^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/mini_chain/node.rs:410:13
[INFO] [stdout]     |
[INFO] [stdout] 410 |         let mut rx = self.proposed_block_receiver.clone();
[INFO] [stdout]     |             ----^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/mini_chain/chain.rs:74:60
[INFO] [stdout]    |
[INFO] [stdout] 74 |     async fn compute_genesis_block(&self) -> Result<Option<&(Block, HashSet<String>)>, String>;
[INFO] [stdout]    |                                    -                       ^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is elided here
[INFO] [stdout]    |                                    |
[INFO] [stdout]    |                                    the lifetime is named here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'life0`
[INFO] [stdout]    |
[INFO] [stdout] 74 |     async fn compute_genesis_block(&self) -> Result<Option<&'life0 (Block, HashSet<String>)>, String>;
[INFO] [stdout]    |                                                             ++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/mini_chain/chain.rs:305:60
[INFO] [stdout]     |
[INFO] [stdout] 305 |     async fn compute_genesis_block(&self) -> Result<Option<&(Block, HashSet<String>)>, String> {
[INFO] [stdout]     |                                    -                       ^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is elided here
[INFO] [stdout]     |                                    |
[INFO] [stdout]     |                                    the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'life0`
[INFO] [stdout]     |
[INFO] [stdout] 305 |     async fn compute_genesis_block(&self) -> Result<Option<&'life0 (Block, HashSet<String>)>, String> {
[INFO] [stdout]     |                                                             ++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/mini_chain/chain.rs:620:61
[INFO] [stdout]     |
[INFO] [stdout] 620 |     async fn stream_transactions(&self) -> Result<BoxStream<'_, Result<Transaction, String>>, String>;
[INFO] [stdout]     |                                  -                          ^^ the same lifetime is elided here
[INFO] [stdout]     |                                  |
[INFO] [stdout]     |                                  the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'life0`
[INFO] [stdout]     |
[INFO] [stdout] 620 -     async fn stream_transactions(&self) -> Result<BoxStream<'_, Result<Transaction, String>>, String>;
[INFO] [stdout] 620 +     async fn stream_transactions(&self) -> Result<BoxStream<'life0, Result<Transaction, String>>, String>;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/mini_chain/chain.rs:691:61
[INFO] [stdout]     |
[INFO] [stdout] 691 |     async fn stream_transactions(&self) -> Result<BoxStream<'_, Result<Transaction, String>>, String> {
[INFO] [stdout]     |                                  -                          ^^ the same lifetime is elided here
[INFO] [stdout]     |                                  |
[INFO] [stdout]     |                                  the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'life0`
[INFO] [stdout]     |
[INFO] [stdout] 691 -     async fn stream_transactions(&self) -> Result<BoxStream<'_, Result<Transaction, String>>, String> {
[INFO] [stdout] 691 +     async fn stream_transactions(&self) -> Result<BoxStream<'life0, Result<Transaction, String>>, String> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/mini_chain/mempool.rs:56:24
[INFO] [stdout]    |
[INFO] [stdout] 55 |         &self
[INFO] [stdout]    |         - the lifetime is named here
[INFO] [stdout] 56 |     ) -> Result<Option<&Transaction>, String>;
[INFO] [stdout]    |                        ^^^^^^^^^^^^ the same lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'life0`
[INFO] [stdout]    |
[INFO] [stdout] 56 |     ) -> Result<Option<&'life0 Transaction>, String>;
[INFO] [stdout]    |                         ++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/mini_chain/mempool.rs:227:24
[INFO] [stdout]     |
[INFO] [stdout] 226 |         &self
[INFO] [stdout]     |         - the lifetime is named here
[INFO] [stdout] 227 |     ) -> Result<Option<&Transaction>, String> {
[INFO] [stdout]     |                        ^^^^^^^^^^^^ the same lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'life0`
[INFO] [stdout]     |
[INFO] [stdout] 227 |     ) -> Result<Option<&'life0 Transaction>, String> {
[INFO] [stdout]     |                         ++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 01s
[INFO] running `Command { std: "docker" "inspect" "77af05d78ccbd40d7ce9c53a9566764b6cfaee2c8e1f0f9571b2cf2d6c168999", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77af05d78ccbd40d7ce9c53a9566764b6cfaee2c8e1f0f9571b2cf2d6c168999", kill_on_drop: false }`
[INFO] [stdout] 77af05d78ccbd40d7ce9c53a9566764b6cfaee2c8e1f0f9571b2cf2d6c168999
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cfc4186033a07cfc34d2e0add252ce2eacff4aad6f4cd6303dc01f20736e129f
[INFO] running `Command { std: "docker" "start" "-a" "cfc4186033a07cfc34d2e0add252ce2eacff4aad6f4cd6303dc01f20736e129f", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/mini_chain/chain.rs:5:73
[INFO] [stdout]   |
[INFO] [stdout] 5 | use super::metadata::{BlockchainMetadata, BlockchainMetadataOperations, self};
[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 imports: `Rng` and `distributions::Standard`
[INFO] [stdout]  --> src/mini_chain/chain.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | use rand::{Rng, distributions::Standard};
[INFO] [stdout]   |            ^^^  ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stream`
[INFO] [stdout]  --> src/mini_chain/chain.rs:9:34
[INFO] [stdout]   |
[INFO] [stdout] 9 | use futures::stream::{BoxStream, Stream, StreamExt};
[INFO] [stdout]   |                                  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::hash_map::DefaultHasher`
[INFO] [stdout]   --> src/mini_chain/chain.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::collections::hash_map::DefaultHasher;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Hasher`
[INFO] [stdout]   --> src/mini_chain/chain.rs:13:23
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::hash::{Hash, Hasher};
[INFO] [stdout]    |                       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `info` and `instrument`
[INFO] [stdout]   --> src/mini_chain/chain.rs:14:15
[INFO] [stdout]    |
[INFO] [stdout] 14 | use tracing::{instrument, info};
[INFO] [stdout]    |               ^^^^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Receiver`
[INFO] [stdout]  --> src/mini_chain/client.rs:5:29
[INFO] [stdout]   |
[INFO] [stdout] 5 | use async_channel::{Sender, Receiver};
[INFO] [stdout]   |                             ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]  --> src/mini_chain/node.rs:2:34
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::{BTreeSet, HashSet, HashMap};
[INFO] [stdout]   |                                  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]   --> src/mini_chain/node.rs:14:18
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Transaction, self
[INFO] [stdout]    |                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::sync::mpsc`
[INFO] [stdout]   --> src/mini_chain/node.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | use tokio::sync::mpsc;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::stream::FuturesUnordered`
[INFO] [stdout]  --> src/network.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use futures::stream::FuturesUnordered;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::time::sleep`
[INFO] [stdout]  --> src/network.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tokio::time::sleep;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tracing::info`
[INFO] [stdout]  --> src/network.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tracing::info;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> src/network.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::mini_chain::metadata`
[INFO] [stdout]   --> src/network.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use crate::mini_chain::metadata;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `FullNode`
[INFO] [stdout]   --> src/network.rs:14:22
[INFO] [stdout]    |
[INFO] [stdout] 14 |     ChannelFullNode, FullNode
[INFO] [stdout]    |                      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling mini-chain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `tokio::sync::mpsc`
[INFO] [stdout]   --> src/network.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use tokio::sync::mpsc;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/lib.rs:67:25
[INFO] [stdout]    |
[INFO] [stdout] 62 | /                         loop {
[INFO] [stdout] 63 | |                             let transaction = Transaction::random_now(rng);
[INFO] [stdout] 64 | |                             client.submit_transaction(transaction).await?;
[INFO] [stdout] 65 | |                             tokio::time::sleep(Duration::from_millis(client_delay)).await;
[INFO] [stdout] 66 | |                         }
[INFO] [stdout]    | |_________________________- any code following this expression is unreachable
[INFO] [stdout] 67 |                           Ok::<(), String>(())
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/lib.rs:75:25
[INFO] [stdout]    |
[INFO] [stdout] 70 | /                         loop {
[INFO] [stdout] 71 | |                             tokio::time::sleep(Duration::from_secs(1)).await;
[INFO] [stdout] ...  |
[INFO] [stdout] 74 | |                         }
[INFO] [stdout]    | |_________________________- any code following this expression is unreachable
[INFO] [stdout] 75 |                           Ok::<(), String>(())
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:101:25
[INFO] [stdout]     |
[INFO] [stdout]  78 | /                         loop {
[INFO] [stdout]  79 | |                             {
[INFO] [stdout]  80 | |                                 let now = SystemTime::now()
[INFO] [stdout]  81 | |                                     .duration_since(UNIX_EPOCH)
[INFO] [stdout] ...   |
[INFO] [stdout]  99 | |                             )).await; 
[INFO] [stdout] 100 | |                         }
[INFO] [stdout]     | |_________________________- any code following this expression is unreachable
[INFO] [stdout] 101 |                           Ok::<(), String>(())
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Hash`
[INFO] [stdout]   --> src/mini_chain/chain.rs:13:17
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::hash::{Hash, Hasher};
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::SinkExt`
[INFO] [stdout]   --> src/mini_chain/chain.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use futures::SinkExt;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/mini_chain/block.rs:289:13
[INFO] [stdout]     |
[INFO] [stdout] 289 |         let mut transactions = BTreeSet::new();
[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/mini_chain/node.rs:695:13
[INFO] [stdout]     |
[INFO] [stdout] 695 |         let mut rx = self.synchronizer_request_receiver.clone();
[INFO] [stdout]     |             ----^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/mini_chain/node.rs:807:13
[INFO] [stdout]     |
[INFO] [stdout] 807 |         let mut rx = self.mempool_transaction_receiver.clone();
[INFO] [stdout]     |             ----^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/mini_chain/chain.rs:692:14
[INFO] [stdout]     |
[INFO] [stdout] 692 |         let (mut tx, rx) = tokio::sync::mpsc::channel::<Result<Transaction, String>>(32);
[INFO] [stdout]     |              ----^^
[INFO] [stdout]     |              |
[INFO] [stdout]     |              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/mini_chain/node.rs:545:13
[INFO] [stdout]     |
[INFO] [stdout] 545 |         let mut rx = self.mined_block_receiver.clone();
[INFO] [stdout]     |             ----^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/mini_chain/node.rs:410:13
[INFO] [stdout]     |
[INFO] [stdout] 410 |         let mut rx = self.proposed_block_receiver.clone();
[INFO] [stdout]     |             ----^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/mini_chain/chain.rs:74:60
[INFO] [stdout]    |
[INFO] [stdout] 74 |     async fn compute_genesis_block(&self) -> Result<Option<&(Block, HashSet<String>)>, String>;
[INFO] [stdout]    |                                    -                       ^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is elided here
[INFO] [stdout]    |                                    |
[INFO] [stdout]    |                                    the lifetime is named here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'life0`
[INFO] [stdout]    |
[INFO] [stdout] 74 |     async fn compute_genesis_block(&self) -> Result<Option<&'life0 (Block, HashSet<String>)>, String>;
[INFO] [stdout]    |                                                             ++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/mini_chain/chain.rs:305:60
[INFO] [stdout]     |
[INFO] [stdout] 305 |     async fn compute_genesis_block(&self) -> Result<Option<&(Block, HashSet<String>)>, String> {
[INFO] [stdout]     |                                    -                       ^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is elided here
[INFO] [stdout]     |                                    |
[INFO] [stdout]     |                                    the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'life0`
[INFO] [stdout]     |
[INFO] [stdout] 305 |     async fn compute_genesis_block(&self) -> Result<Option<&'life0 (Block, HashSet<String>)>, String> {
[INFO] [stdout]     |                                                             ++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/mini_chain/chain.rs:620:61
[INFO] [stdout]     |
[INFO] [stdout] 620 |     async fn stream_transactions(&self) -> Result<BoxStream<'_, Result<Transaction, String>>, String>;
[INFO] [stdout]     |                                  -                          ^^ the same lifetime is elided here
[INFO] [stdout]     |                                  |
[INFO] [stdout]     |                                  the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'life0`
[INFO] [stdout]     |
[INFO] [stdout] 620 -     async fn stream_transactions(&self) -> Result<BoxStream<'_, Result<Transaction, String>>, String>;
[INFO] [stdout] 620 +     async fn stream_transactions(&self) -> Result<BoxStream<'life0, Result<Transaction, String>>, String>;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/mini_chain/chain.rs:691:61
[INFO] [stdout]     |
[INFO] [stdout] 691 |     async fn stream_transactions(&self) -> Result<BoxStream<'_, Result<Transaction, String>>, String> {
[INFO] [stdout]     |                                  -                          ^^ the same lifetime is elided here
[INFO] [stdout]     |                                  |
[INFO] [stdout]     |                                  the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'life0`
[INFO] [stdout]     |
[INFO] [stdout] 691 -     async fn stream_transactions(&self) -> Result<BoxStream<'_, Result<Transaction, String>>, String> {
[INFO] [stdout] 691 +     async fn stream_transactions(&self) -> Result<BoxStream<'life0, Result<Transaction, String>>, String> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/mini_chain/mempool.rs:56:24
[INFO] [stdout]    |
[INFO] [stdout] 55 |         &self
[INFO] [stdout]    |         - the lifetime is named here
[INFO] [stdout] 56 |     ) -> Result<Option<&Transaction>, String>;
[INFO] [stdout]    |                        ^^^^^^^^^^^^ the same lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'life0`
[INFO] [stdout]    |
[INFO] [stdout] 56 |     ) -> Result<Option<&'life0 Transaction>, String>;
[INFO] [stdout]    |                         ++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/mini_chain/mempool.rs:227:24
[INFO] [stdout]     |
[INFO] [stdout] 226 |         &self
[INFO] [stdout]     |         - the lifetime is named here
[INFO] [stdout] 227 |     ) -> Result<Option<&Transaction>, String> {
[INFO] [stdout]     |                        ^^^^^^^^^^^^ the same lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'life0`
[INFO] [stdout]     |
[INFO] [stdout] 227 |     ) -> Result<Option<&'life0 Transaction>, String> {
[INFO] [stdout]     |                         ++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/mini_chain/chain.rs:5:73
[INFO] [stdout]   |
[INFO] [stdout] 5 | use super::metadata::{BlockchainMetadata, BlockchainMetadataOperations, self};
[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: `distributions::Standard`
[INFO] [stdout]  --> src/mini_chain/chain.rs:7:17
[INFO] [stdout]   |
[INFO] [stdout] 7 | use rand::{Rng, distributions::Standard};
[INFO] [stdout]   |                 ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stream`
[INFO] [stdout]  --> src/mini_chain/chain.rs:9:34
[INFO] [stdout]   |
[INFO] [stdout] 9 | use futures::stream::{BoxStream, Stream, StreamExt};
[INFO] [stdout]   |                                  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::hash_map::DefaultHasher`
[INFO] [stdout]   --> src/mini_chain/chain.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::collections::hash_map::DefaultHasher;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `info` and `instrument`
[INFO] [stdout]   --> src/mini_chain/chain.rs:14:15
[INFO] [stdout]    |
[INFO] [stdout] 14 | use tracing::{instrument, info};
[INFO] [stdout]    |               ^^^^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Receiver`
[INFO] [stdout]  --> src/mini_chain/client.rs:5:29
[INFO] [stdout]   |
[INFO] [stdout] 5 | use async_channel::{Sender, Receiver};
[INFO] [stdout]   |                             ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]  --> src/mini_chain/node.rs:2:34
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::{BTreeSet, HashSet, HashMap};
[INFO] [stdout]   |                                  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]   --> src/mini_chain/node.rs:14:18
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Transaction, self
[INFO] [stdout]    |                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::sync::mpsc`
[INFO] [stdout]   --> src/mini_chain/node.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | use tokio::sync::mpsc;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Receiver`, `Sender`, and `self`
[INFO] [stdout]    --> src/mini_chain/node.rs:889:29
[INFO] [stdout]     |
[INFO] [stdout] 889 |     use tokio::sync::mpsc::{self, Sender, Receiver};
[INFO] [stdout]     |                             ^^^^  ^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::stream::FuturesUnordered`
[INFO] [stdout]  --> src/network.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use futures::stream::FuturesUnordered;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::time::sleep`
[INFO] [stdout]  --> src/network.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tokio::time::sleep;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tracing::info`
[INFO] [stdout]  --> src/network.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tracing::info;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> src/network.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::mini_chain::metadata`
[INFO] [stdout]   --> src/network.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use crate::mini_chain::metadata;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `FullNode`
[INFO] [stdout]   --> src/network.rs:14:22
[INFO] [stdout]    |
[INFO] [stdout] 14 |     ChannelFullNode, FullNode
[INFO] [stdout]    |                      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::sync::mpsc`
[INFO] [stdout]   --> src/network.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use tokio::sync::mpsc;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/lib.rs:67:25
[INFO] [stdout]    |
[INFO] [stdout] 62 | /                         loop {
[INFO] [stdout] 63 | |                             let transaction = Transaction::random_now(rng);
[INFO] [stdout] 64 | |                             client.submit_transaction(transaction).await?;
[INFO] [stdout] 65 | |                             tokio::time::sleep(Duration::from_millis(client_delay)).await;
[INFO] [stdout] 66 | |                         }
[INFO] [stdout]    | |_________________________- any code following this expression is unreachable
[INFO] [stdout] 67 |                           Ok::<(), String>(())
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/lib.rs:75:25
[INFO] [stdout]    |
[INFO] [stdout] 70 | /                         loop {
[INFO] [stdout] 71 | |                             tokio::time::sleep(Duration::from_secs(1)).await;
[INFO] [stdout] ...  |
[INFO] [stdout] 74 | |                         }
[INFO] [stdout]    | |_________________________- any code following this expression is unreachable
[INFO] [stdout] 75 |                           Ok::<(), String>(())
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:101:25
[INFO] [stdout]     |
[INFO] [stdout]  78 | /                         loop {
[INFO] [stdout]  79 | |                             {
[INFO] [stdout]  80 | |                                 let now = SystemTime::now()
[INFO] [stdout]  81 | |                                     .duration_since(UNIX_EPOCH)
[INFO] [stdout] ...   |
[INFO] [stdout]  99 | |                             )).await; 
[INFO] [stdout] 100 | |                         }
[INFO] [stdout]     | |_________________________- any code following this expression is unreachable
[INFO] [stdout] 101 |                           Ok::<(), String>(())
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Hash`
[INFO] [stdout]   --> src/mini_chain/chain.rs:13:17
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::hash::{Hash, Hasher};
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Hasher`
[INFO] [stdout]   --> src/mini_chain/chain.rs:13:23
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::hash::{Hash, Hasher};
[INFO] [stdout]    |                       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::SinkExt`
[INFO] [stdout]   --> src/mini_chain/chain.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use futures::SinkExt;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/mini_chain/node.rs:545:13
[INFO] [stdout]     |
[INFO] [stdout] 545 |         let mut rx = self.mined_block_receiver.clone();
[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/mini_chain/node.rs:410:13
[INFO] [stdout]     |
[INFO] [stdout] 410 |         let mut rx = self.proposed_block_receiver.clone();
[INFO] [stdout]     |             ----^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/mini_chain/node.rs:695:13
[INFO] [stdout]     |
[INFO] [stdout] 695 |         let mut rx = self.synchronizer_request_receiver.clone();
[INFO] [stdout]     |             ----^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/mini_chain/chain.rs:692:14
[INFO] [stdout]     |
[INFO] [stdout] 692 |         let (mut tx, rx) = tokio::sync::mpsc::channel::<Result<Transaction, String>>(32);
[INFO] [stdout]     |              ----^^
[INFO] [stdout]     |              |
[INFO] [stdout]     |              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/mini_chain/node.rs:807:13
[INFO] [stdout]     |
[INFO] [stdout] 807 |         let mut rx = self.mempool_transaction_receiver.clone();
[INFO] [stdout]     |             ----^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/mini_chain/block.rs:289:13
[INFO] [stdout]     |
[INFO] [stdout] 289 |         let mut transactions = BTreeSet::new();
[INFO] [stdout]     |             ----^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/mini_chain/chain.rs:74:60
[INFO] [stdout]    |
[INFO] [stdout] 74 |     async fn compute_genesis_block(&self) -> Result<Option<&(Block, HashSet<String>)>, String>;
[INFO] [stdout]    |                                    -                       ^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is elided here
[INFO] [stdout]    |                                    |
[INFO] [stdout]    |                                    the lifetime is named here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'life0`
[INFO] [stdout]    |
[INFO] [stdout] 74 |     async fn compute_genesis_block(&self) -> Result<Option<&'life0 (Block, HashSet<String>)>, String>;
[INFO] [stdout]    |                                                             ++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/mini_chain/chain.rs:305:60
[INFO] [stdout]     |
[INFO] [stdout] 305 |     async fn compute_genesis_block(&self) -> Result<Option<&(Block, HashSet<String>)>, String> {
[INFO] [stdout]     |                                    -                       ^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is elided here
[INFO] [stdout]     |                                    |
[INFO] [stdout]     |                                    the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'life0`
[INFO] [stdout]     |
[INFO] [stdout] 305 |     async fn compute_genesis_block(&self) -> Result<Option<&'life0 (Block, HashSet<String>)>, String> {
[INFO] [stdout]     |                                                             ++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/mini_chain/chain.rs:620:61
[INFO] [stdout]     |
[INFO] [stdout] 620 |     async fn stream_transactions(&self) -> Result<BoxStream<'_, Result<Transaction, String>>, String>;
[INFO] [stdout]     |                                  -                          ^^ the same lifetime is elided here
[INFO] [stdout]     |                                  |
[INFO] [stdout]     |                                  the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'life0`
[INFO] [stdout]     |
[INFO] [stdout] 620 -     async fn stream_transactions(&self) -> Result<BoxStream<'_, Result<Transaction, String>>, String>;
[INFO] [stdout] 620 +     async fn stream_transactions(&self) -> Result<BoxStream<'life0, Result<Transaction, String>>, String>;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/mini_chain/mempool.rs:56:24
[INFO] [stdout]    |
[INFO] [stdout] 55 |         &self
[INFO] [stdout]    |         - the lifetime is named here
[INFO] [stdout] 56 |     ) -> Result<Option<&Transaction>, String>;
[INFO] [stdout]    |                        ^^^^^^^^^^^^ the same lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'life0`
[INFO] [stdout]    |
[INFO] [stdout] 56 |     ) -> Result<Option<&'life0 Transaction>, String>;
[INFO] [stdout]    |                         ++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/mini_chain/chain.rs:691:61
[INFO] [stdout]     |
[INFO] [stdout] 691 |     async fn stream_transactions(&self) -> Result<BoxStream<'_, Result<Transaction, String>>, String> {
[INFO] [stdout]     |                                  -                          ^^ the same lifetime is elided here
[INFO] [stdout]     |                                  |
[INFO] [stdout]     |                                  the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'life0`
[INFO] [stdout]     |
[INFO] [stdout] 691 -     async fn stream_transactions(&self) -> Result<BoxStream<'_, Result<Transaction, String>>, String> {
[INFO] [stdout] 691 +     async fn stream_transactions(&self) -> Result<BoxStream<'life0, Result<Transaction, String>>, String> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/mini_chain/mempool.rs:227:24
[INFO] [stdout]     |
[INFO] [stdout] 226 |         &self
[INFO] [stdout]     |         - the lifetime is named here
[INFO] [stdout] 227 |     ) -> Result<Option<&Transaction>, String> {
[INFO] [stdout]     |                        ^^^^^^^^^^^^ the same lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'life0`
[INFO] [stdout]     |
[INFO] [stdout] 227 |     ) -> Result<Option<&'life0 Transaction>, String> {
[INFO] [stdout]     |                         ++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 5.28s
[INFO] running `Command { std: "docker" "inspect" "cfc4186033a07cfc34d2e0add252ce2eacff4aad6f4cd6303dc01f20736e129f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cfc4186033a07cfc34d2e0add252ce2eacff4aad6f4cd6303dc01f20736e129f", kill_on_drop: false }`
[INFO] [stdout] cfc4186033a07cfc34d2e0add252ce2eacff4aad6f4cd6303dc01f20736e129f