[INFO] cloning repository https://github.com/VadzimBelski-ScienceSoft/rust-ethereum-monitor
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/VadzimBelski-ScienceSoft/rust-ethereum-monitor" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVadzimBelski-ScienceSoft%2Frust-ethereum-monitor", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVadzimBelski-ScienceSoft%2Frust-ethereum-monitor'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 841bfac9784fa801e0ddea8d33678051f00bb30a
[INFO] building VadzimBelski-ScienceSoft/rust-ethereum-monitor against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVadzimBelski-ScienceSoft%2Frust-ethereum-monitor" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/VadzimBelski-ScienceSoft/rust-ethereum-monitor
[INFO] finished tweaking git repo https://github.com/VadzimBelski-ScienceSoft/rust-ethereum-monitor
[INFO] tweaked toml for git repo https://github.com/VadzimBelski-ScienceSoft/rust-ethereum-monitor written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/VadzimBelski-ScienceSoft/rust-ethereum-monitor on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/VadzimBelski-ScienceSoft/rust-ethereum-monitor 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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lock_api v0.4.8
[INFO] [stderr]   Downloaded byte-slice-cast v1.2.1
[INFO] [stderr]   Downloaded impl-codec v0.5.1
[INFO] [stderr]   Downloaded thiserror v1.0.34
[INFO] [stderr]   Downloaded base64ct v1.0.1
[INFO] [stderr]   Downloaded primitive-types v0.9.1
[INFO] [stderr]   Downloaded radium v0.6.2
[INFO] [stderr]   Downloaded rlp v0.5.1
[INFO] [stderr]   Downloaded zeroize v1.5.7
[INFO] [stderr]   Downloaded sha2 v0.10.5
[INFO] [stderr]   Downloaded password-hash v0.3.2
[INFO] [stderr]   Downloaded pbkdf2 v0.10.1
[INFO] [stderr]   Downloaded secp256k1 v0.24.0
[INFO] [stderr]   Downloaded parity-scale-codec v2.3.1
[INFO] [stderr]   Downloaded web3 v0.17.0
[INFO] [stderr]   Downloaded ticker v0.1.1
[INFO] [stderr]   Downloaded uint v0.9.3
[INFO] [stderr]   Downloaded sha1 v0.10.4
[INFO] [stderr]   Downloaded semver v1.0.13
[INFO] [stderr]   Downloaded bip0039 v0.10.1
[INFO] [stderr]   Downloaded parity-scale-codec-derive v2.3.1
[INFO] [stderr]   Downloaded secp256k1-sys v0.4.2
[INFO] [stderr]   Downloaded bitvec v0.20.4
[INFO] [stderr]   Downloaded keccak v0.1.2
[INFO] [stderr]   Downloaded tokio v1.21.0
[INFO] [stderr]   Downloaded ethabi v14.1.0
[INFO] [stderr]   Downloaded ethbloom v0.11.1
[INFO] [stderr]   Downloaded ethereum-types v0.11.0
[INFO] [stderr]   Downloaded secp256k1 v0.20.3
[INFO] [stderr]   Downloaded soketto v0.5.0
[INFO] [stderr]   Downloaded thiserror-impl v1.0.34
[INFO] [stderr]   Downloaded anyhow v1.0.64
[INFO] [stderr]   Downloaded tokio-stream v0.1.9
[INFO] [stderr]   Downloaded once_cell v1.14.0
[INFO] [stderr]   Downloaded bitcoin v0.29.1
[INFO] [stderr]   Downloaded secp256k1-sys v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4186286f0e39c88020c3b229e70359dec749099b8a92bcc632c628fc453f2cdd
[INFO] running `Command { std: "docker" "start" "-a" "4186286f0e39c88020c3b229e70359dec749099b8a92bcc632c628fc453f2cdd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4186286f0e39c88020c3b229e70359dec749099b8a92bcc632c628fc453f2cdd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4186286f0e39c88020c3b229e70359dec749099b8a92bcc632c628fc453f2cdd", kill_on_drop: false }`
[INFO] [stdout] 4186286f0e39c88020c3b229e70359dec749099b8a92bcc632c628fc453f2cdd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9af79aa3675ff1c63763c5ba343d71ef47f931a2ff4bbd18e8ffae466ef87082
[INFO] running `Command { std: "docker" "start" "-a" "9af79aa3675ff1c63763c5ba343d71ef47f931a2ff4bbd18e8ffae466ef87082", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]    Compiling bytes v1.2.1
[INFO] [stderr]    Compiling once_cell v1.14.0
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.9
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling futures-core v0.3.24
[INFO] [stderr]    Compiling smallvec v1.9.0
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling lock_api v0.4.8
[INFO] [stderr]    Compiling serde_derive v1.0.144
[INFO] [stderr]    Compiling serde v1.0.144
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]    Compiling itoa v1.0.3
[INFO] [stderr]    Compiling futures-sink v0.3.24
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]    Compiling tokio v1.21.0
[INFO] [stderr]    Compiling futures-channel v0.3.24
[INFO] [stderr]    Compiling futures-task v0.3.24
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling futures-util v0.3.24
[INFO] [stderr]    Compiling futures-io v0.3.24
[INFO] [stderr]    Compiling subtle v2.4.1
[INFO] [stderr]    Compiling radium v0.6.2
[INFO] [stderr]    Compiling openssl v0.10.41
[INFO] [stderr]    Compiling tinyvec v1.6.0
[INFO] [stderr]    Compiling tracing-core v0.1.29
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]    Compiling funty v1.1.0
[INFO] [stderr]    Compiling http v0.2.8
[INFO] [stderr]    Compiling cpufeatures v0.2.5
[INFO] [stderr]    Compiling native-tls v0.2.10
[INFO] [stderr]    Compiling tap v1.0.1
[INFO] [stderr]    Compiling wyz v0.2.0
[INFO] [stderr]    Compiling matches v0.1.9
[INFO] [stderr]    Compiling rlp v0.5.1
[INFO] [stderr]    Compiling byte-slice-cast v1.2.1
[INFO] [stderr]    Compiling serde_json v1.0.85
[INFO] [stderr]    Compiling ryu v1.0.11
[INFO] [stderr]    Compiling arrayvec v0.7.2
[INFO] [stderr]    Compiling form_urlencoded v1.0.1
[INFO] [stderr]    Compiling httpdate v1.0.2
[INFO] [stderr]    Compiling impl-rlp v0.3.0
[INFO] [stderr]    Compiling unicode-bidi v0.3.8
[INFO] [stderr]    Compiling openssl-sys v0.9.75
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling bitvec v0.20.4
[INFO] [stderr]    Compiling getrandom v0.2.7
[INFO] [stderr]    Compiling mio v0.8.4
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling socket2 v0.4.7
[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling parking_lot v0.12.1
[INFO] [stderr]    Compiling tracing v0.1.36
[INFO] [stderr]    Compiling secp256k1-sys v0.4.2
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling http-body v0.4.5
[INFO] [stderr]    Compiling secp256k1-sys v0.6.0
[INFO] [stderr]    Compiling uint v0.9.3
[INFO] [stderr]    Compiling unicode-normalization v0.1.21
[INFO] [stderr]    Compiling anyhow v1.0.64
[INFO] [stderr]    Compiling encoding_rs v0.8.31
[INFO] [stderr]    Compiling base64 v0.13.0
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling block-buffer v0.10.3
[INFO] [stderr]    Compiling block-buffer v0.9.0
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling digest v0.10.3
[INFO] [stderr]    Compiling base64ct v1.0.1
[INFO] [stderr]    Compiling keccak v0.1.2
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling sha-1 v0.9.8
[INFO] [stderr]    Compiling idna v0.2.3
[INFO] [stderr]    Compiling sha3 v0.9.1
[INFO] [stderr]    Compiling password-hash v0.3.2
[INFO] [stderr]    Compiling sha1 v0.10.4
[INFO] [stderr]    Compiling headers-core v0.2.0
[INFO] [stderr]    Compiling ipnet v2.5.0
[INFO] [stderr]    Compiling bitcoin_hashes v0.11.0
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling headers v0.3.8
[INFO] [stderr]    Compiling fixed-hash v0.7.0
[INFO] [stderr]    Compiling pbkdf2 v0.10.1
[INFO] [stderr]    Compiling hmac v0.12.1
[INFO] [stderr]    Compiling url v2.2.2
[INFO] [stderr]    Compiling sha2 v0.10.5
[INFO] [stderr]    Compiling zeroize v1.5.7
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling ticker v0.1.1
[INFO] [stderr]    Compiling bip0039 v0.10.1
[INFO] [stderr]    Compiling secp256k1 v0.20.3
[INFO] [stderr]    Compiling toml v0.5.9
[INFO] [stderr]    Compiling tokio-macros v1.8.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.34
[INFO] [stderr]    Compiling futures-macro v0.3.24
[INFO] [stderr]    Compiling openssl-macros v0.1.0
[INFO] [stderr]    Compiling impl-trait-for-tuples v0.2.2
[INFO] [stderr]    Compiling pin-project-internal v1.0.12
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]    Compiling secp256k1 v0.24.0
[INFO] [stderr]    Compiling pin-project v1.0.12
[INFO] [stderr]    Compiling bitcoin v0.29.1
[INFO] [stderr]    Compiling thiserror v1.0.34
[INFO] [stderr]    Compiling proc-macro-crate v1.2.1
[INFO] [stderr]    Compiling parity-scale-codec-derive v2.3.1
[INFO] [stderr]    Compiling futures-executor v0.3.24
[INFO] [stderr]    Compiling futures v0.3.24
[INFO] [stderr]    Compiling soketto v0.5.0
[INFO] [stderr]    Compiling tokio-util v0.7.3
[INFO] [stderr]    Compiling tokio-native-tls v0.3.0
[INFO] [stderr]    Compiling tokio-stream v0.1.9
[INFO] [stderr]    Compiling web3-async-native-tls v0.4.0
[INFO] [stderr]    Compiling tokio-util v0.6.10
[INFO] [stderr]    Compiling h2 v0.3.14
[INFO] [stderr]    Compiling impl-serde v0.3.2
[INFO] [stderr]    Compiling parity-scale-codec v2.3.1
[INFO] [stderr]    Compiling serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling ethbloom v0.11.1
[INFO] [stderr]    Compiling impl-codec v0.5.1
[INFO] [stderr]    Compiling primitive-types v0.9.1
[INFO] [stderr]    Compiling jsonrpc-core v18.0.0
[INFO] [stderr]    Compiling ethereum-types v0.11.0
[INFO] [stderr]    Compiling ethabi v14.1.0
[INFO] [stderr]    Compiling hyper v0.14.20
[INFO] [stderr]    Compiling hyper-tls v0.5.0
[INFO] [stderr]    Compiling reqwest v0.11.11
[INFO] [stderr]    Compiling web3 v0.17.0
[INFO] [stderr]    Compiling rust-ethereum-monitor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `secp256k1::rand::rngs::OsRng`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use secp256k1::rand::rngs::OsRng;
[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: `Count`
[INFO] [stdout]   --> src/main.rs:19:15
[INFO] [stdout]    |
[INFO] [stdout] 19 | use bip0039::{Count, Mnemonic};
[INFO] [stdout]    |               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ChildNumber`
[INFO] [stdout]   --> src/main.rs:21:28
[INFO] [stdout]    |
[INFO] [stdout] 21 | use bitcoin::util::bip32::{ChildNumber, DerivationPath, ExtendedPrivKey, ExtendedPubKey};
[INFO] [stdout]    |                            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `bitcoin::PublicKey`
[INFO] [stdout]   --> src/main.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | use bitcoin::PublicKey;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let mut sub = web3.eth_subscribe().subscribe_new_heads().await?;
[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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 13s
[INFO] running `Command { std: "docker" "inspect" "9af79aa3675ff1c63763c5ba343d71ef47f931a2ff4bbd18e8ffae466ef87082", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9af79aa3675ff1c63763c5ba343d71ef47f931a2ff4bbd18e8ffae466ef87082", kill_on_drop: false }`
[INFO] [stdout] 9af79aa3675ff1c63763c5ba343d71ef47f931a2ff4bbd18e8ffae466ef87082
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c6c27d1de2320200516d5eb1cab3c820a7ad9eeb6a5d3669a7f2d4be55e306e4
[INFO] running `Command { std: "docker" "start" "-a" "c6c27d1de2320200516d5eb1cab3c820a7ad9eeb6a5d3669a7f2d4be55e306e4", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-ethereum-monitor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `secp256k1::rand::rngs::OsRng`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use secp256k1::rand::rngs::OsRng;
[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: `Count`
[INFO] [stdout]   --> src/main.rs:19:15
[INFO] [stdout]    |
[INFO] [stdout] 19 | use bip0039::{Count, Mnemonic};
[INFO] [stdout]    |               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ChildNumber`
[INFO] [stdout]   --> src/main.rs:21:28
[INFO] [stdout]    |
[INFO] [stdout] 21 | use bitcoin::util::bip32::{ChildNumber, DerivationPath, ExtendedPrivKey, ExtendedPubKey};
[INFO] [stdout]    |                            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `bitcoin::PublicKey`
[INFO] [stdout]   --> src/main.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | use bitcoin::PublicKey;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let mut sub = web3.eth_subscribe().subscribe_new_heads().await?;
[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] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `Command { std: "docker" "inspect" "c6c27d1de2320200516d5eb1cab3c820a7ad9eeb6a5d3669a7f2d4be55e306e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6c27d1de2320200516d5eb1cab3c820a7ad9eeb6a5d3669a7f2d4be55e306e4", kill_on_drop: false }`
[INFO] [stdout] c6c27d1de2320200516d5eb1cab3c820a7ad9eeb6a5d3669a7f2d4be55e306e4
