[INFO] cloning repository https://github.com/twone-lv/eth-rpc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/twone-lv/eth-rpc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftwone-lv%2Feth-rpc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftwone-lv%2Feth-rpc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5c089cf7cec8c44c435ce0b06fc2d7b4f00cc6f4
[INFO] checking twone-lv/eth-rpc against try#438eb4c1a1c3841523d7f672601e8adbe04cff28 for pr-147589-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftwone-lv%2Feth-rpc" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/twone-lv/eth-rpc
[INFO] finished tweaking git repo https://github.com/twone-lv/eth-rpc
[INFO] tweaked toml for git repo https://github.com/twone-lv/eth-rpc written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/twone-lv/eth-rpc on toolchain 438eb4c1a1c3841523d7f672601e8adbe04cff28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+438eb4c1a1c3841523d7f672601e8adbe04cff28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/twone-lv/eth-rpc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+438eb4c1a1c3841523d7f672601e8adbe04cff28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded jsonrpc-http-server v14.2.0
[INFO] [stderr]   Downloaded uint v0.8.5
[INFO] [stderr]   Downloaded primitive-types v0.7.3
[INFO] [stderr]   Downloaded ethereum-types v0.9.2
[INFO] [stderr]   Downloaded jsonrpc-derive v14.2.2
[INFO] [stderr]   Downloaded impl-rlp v0.2.1
[INFO] [stderr]   Downloaded jsonrpc-server-utils v14.2.0
[INFO] [stderr]   Downloaded jsonrpc-core v14.2.0
[INFO] [stderr]   Downloaded ethbloom v0.9.2
[INFO] [stderr]   Downloaded fixed-hash v0.6.1
[INFO] [stderr]   Downloaded parity-scale-codec v1.3.7
[INFO] [stderr]   Downloaded hyper v0.12.36
[INFO] [stderr]   Downloaded rlp v0.4.6
[INFO] [stderr]   Downloaded impl-serde v0.3.1
[INFO] [stderr]   Downloaded bstr v0.2.16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+438eb4c1a1c3841523d7f672601e8adbe04cff28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 36a15ee01616e485065162ac76fbfd30f0d13d2a7d579fa94352c6c514464f1a
[INFO] running `Command { std: "docker" "start" "-a" "36a15ee01616e485065162ac76fbfd30f0d13d2a7d579fa94352c6c514464f1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "36a15ee01616e485065162ac76fbfd30f0d13d2a7d579fa94352c6c514464f1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36a15ee01616e485065162ac76fbfd30f0d13d2a7d579fa94352c6c514464f1a", kill_on_drop: false }`
[INFO] [stdout] 36a15ee01616e485065162ac76fbfd30f0d13d2a7d579fa94352c6c514464f1a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+438eb4c1a1c3841523d7f672601e8adbe04cff28" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5bc9428868a760b079df77e99b887758fdcf3bb41214dfd8eca73601dc5ecedf
[INFO] running `Command { std: "docker" "start" "-a" "5bc9428868a760b079df77e99b887758fdcf3bb41214dfd8eca73601dc5ecedf", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]     Checking futures v0.1.31
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]     Checking rustc-hex v2.1.0
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking radium v0.3.0
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]     Checking rlp v0.4.6
[INFO] [stderr]     Checking ryu v1.0.5
[INFO] [stderr]     Checking bitvec v0.17.4
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]     Checking byte-slice-cast v0.3.5
[INFO] [stderr]    Compiling httparse v1.4.1
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]     Checking bstr v0.2.16
[INFO] [stderr]    Compiling hyper v0.12.36
[INFO] [stderr]     Checking impl-rlp v0.2.1
[INFO] [stderr]     Checking uint v0.8.5
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]    Compiling hex-literal v0.3.1
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking tokio-executor v0.1.10
[INFO] [stderr]     Checking tokio-sync v0.1.8
[INFO] [stderr]     Checking want v0.2.0
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking tokio-threadpool v0.1.18
[INFO] [stderr]     Checking tokio-timer v0.2.13
[INFO] [stderr]     Checking tokio-current-thread v0.1.7
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking http v0.1.21
[INFO] [stderr]     Checking string v0.2.1
[INFO] [stderr]     Checking tokio-buf v0.1.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking globset v0.4.6
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking tokio-codec v0.1.2
[INFO] [stderr]     Checking tokio-fs v0.1.7
[INFO] [stderr]     Checking tokio-uds v0.2.7
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking tokio-udp v0.1.6
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking fixed-hash v0.6.1
[INFO] [stderr]     Checking h2 v0.1.26
[INFO] [stderr]     Checking http-body v0.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]     Checking impl-serde v0.3.1
[INFO] [stderr]     Checking parity-scale-codec v1.3.7
[INFO] [stderr]     Checking ethbloom v0.9.2
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]     Checking jsonrpc-core v14.2.0
[INFO] [stderr]     Checking jsonrpc-server-utils v14.2.0
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]     Checking jsonrpc-http-server v14.2.0
[INFO] [stderr]    Compiling jsonrpc-derive v14.2.2
[INFO] [stderr]     Checking impl-codec v0.4.2
[INFO] [stderr]     Checking primitive-types v0.7.3
[INFO] [stderr]     Checking ethereum-types v0.9.2
[INFO] [stderr]     Checking rpc-server v0.1.0 (/opt/rustwide/workdir/rpc-server)
[INFO] [stdout] warning: unused import: `BoxFuture`
[INFO] [stdout]  --> rpc-server/src/rpc/impls/eth.rs:4:28
[INFO] [stdout]   |
[INFO] [stdout] 4 | use jsonrpc_core::{Result, BoxFuture};
[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: `jsonrpc_core::futures::future`
[INFO] [stdout]  --> rpc-server/src/rpc/impls/eth.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use jsonrpc_core::futures::future;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `H160`, `H256`, `H64`, and `U64`
[INFO] [stdout]  --> rpc-server/src/rpc/impls/eth.rs:7:22
[INFO] [stdout]   |
[INFO] [stdout] 7 | use ethereum_types::{H64, H160, H256, U64, U256};
[INFO] [stdout]   |                      ^^^  ^^^^  ^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Serialize` and `Serializer`
[INFO] [stdout]   --> rpc-server/src/rpc/impls/eth.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 | use serde::{Serialize, Serializer};
[INFO] [stdout]    |             ^^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> rpc-server/src/rpc/impls/eth.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |             /// Current block
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 27 |             current_block: U256::from(133),
[INFO] [stdout]    |             ------------------------------ rustdoc does not generate documentation for expression fields
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> rpc-server/src/rpc/impls/eth.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout] 28 |             /// Highest block seen so far
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 29 |             highest_block: U256::from(134),
[INFO] [stdout]    |             ------------------------------ rustdoc does not generate documentation for expression fields
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> rpc-server/src/rpc/impls/eth.rs:30:13
[INFO] [stdout]    |
[INFO] [stdout] 30 |             /// Starting block
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 31 |             starting_block: U256::from(0x432),
[INFO] [stdout]    |             --------------------------------- rustdoc does not generate documentation for expression fields
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BoxFuture`
[INFO] [stdout]  --> rpc-server/src/rpc/traits/eth.rs:2:28
[INFO] [stdout]   |
[INFO] [stdout] 2 | use jsonrpc_core::{Result, BoxFuture};
[INFO] [stdout]   |                            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `H160`, `H256`, `H64`, `U256`, and `U64`
[INFO] [stdout]  --> rpc-server/src/rpc/traits/eth.rs:4:22
[INFO] [stdout]   |
[INFO] [stdout] 4 | use ethereum_types::{H64, H160, H256, U64, U256};
[INFO] [stdout]   |                      ^^^  ^^^^  ^^^^  ^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SyncInfo`
[INFO] [stdout]  --> rpc-server/src/rpc/mod.rs:7:28
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub use types::{SyncStatus,SyncInfo,Metadata};
[INFO] [stdout]   |                            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]   --> rpc-server/src/main.rs:12:25
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::sync::atomic::{self, AtomicUsize};
[INFO] [stdout]    |                         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]   --> rpc-server/src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::env;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BoxFuture`
[INFO] [stdout]  --> rpc-server/src/rpc/impls/eth.rs:4:28
[INFO] [stdout]   |
[INFO] [stdout] 4 | use jsonrpc_core::{Result, BoxFuture};
[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: `jsonrpc_core::futures::future`
[INFO] [stdout]  --> rpc-server/src/rpc/impls/eth.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use jsonrpc_core::futures::future;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `H160`, `H256`, `H64`, and `U64`
[INFO] [stdout]  --> rpc-server/src/rpc/impls/eth.rs:7:22
[INFO] [stdout]   |
[INFO] [stdout] 7 | use ethereum_types::{H64, H160, H256, U64, U256};
[INFO] [stdout]   |                      ^^^  ^^^^  ^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Serialize` and `Serializer`
[INFO] [stdout]   --> rpc-server/src/rpc/impls/eth.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 | use serde::{Serialize, Serializer};
[INFO] [stdout]    |             ^^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> rpc-server/src/rpc/impls/eth.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |             /// Current block
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 27 |             current_block: U256::from(133),
[INFO] [stdout]    |             ------------------------------ rustdoc does not generate documentation for expression fields
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> rpc-server/src/rpc/impls/eth.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout] 28 |             /// Highest block seen so far
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 29 |             highest_block: U256::from(134),
[INFO] [stdout]    |             ------------------------------ rustdoc does not generate documentation for expression fields
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> rpc-server/src/rpc/impls/eth.rs:30:13
[INFO] [stdout]    |
[INFO] [stdout] 30 |             /// Starting block
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 31 |             starting_block: U256::from(0x432),
[INFO] [stdout]    |             --------------------------------- rustdoc does not generate documentation for expression fields
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BoxFuture`
[INFO] [stdout]  --> rpc-server/src/rpc/traits/eth.rs:2:28
[INFO] [stdout]   |
[INFO] [stdout] 2 | use jsonrpc_core::{Result, BoxFuture};
[INFO] [stdout]   |                            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `H160`, `H256`, `H64`, `U256`, and `U64`
[INFO] [stdout]  --> rpc-server/src/rpc/traits/eth.rs:4:22
[INFO] [stdout]   |
[INFO] [stdout] 4 | use ethereum_types::{H64, H160, H256, U64, U256};
[INFO] [stdout]   |                      ^^^  ^^^^  ^^^^  ^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SyncInfo`
[INFO] [stdout]  --> rpc-server/src/rpc/mod.rs:7:28
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub use types::{SyncStatus,SyncInfo,Metadata};
[INFO] [stdout]   |                            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]   --> rpc-server/src/main.rs:12:25
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::sync::atomic::{self, AtomicUsize};
[INFO] [stdout]    |                         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]   --> rpc-server/src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::env;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> rpc-server/src/main.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |         let mut req = request;
[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]   --> rpc-server/src/main.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |         let mut req = request;
[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: field `0` is never read
[INFO] [stdout]   --> rpc-server/src/main.rs:32:21
[INFO] [stdout]    |
[INFO] [stdout] 32 | struct MyMiddleware(AtomicUsize);
[INFO] [stdout]    |        ------------ ^^^^^^^^^^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> rpc-server/src/main.rs:32:21
[INFO] [stdout]    |
[INFO] [stdout] 32 | struct MyMiddleware(AtomicUsize);
[INFO] [stdout]    |        ------------ ^^^^^^^^^^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.95s
[INFO] running `Command { std: "docker" "inspect" "5bc9428868a760b079df77e99b887758fdcf3bb41214dfd8eca73601dc5ecedf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5bc9428868a760b079df77e99b887758fdcf3bb41214dfd8eca73601dc5ecedf", kill_on_drop: false }`
[INFO] [stdout] 5bc9428868a760b079df77e99b887758fdcf3bb41214dfd8eca73601dc5ecedf
