[INFO] cloning repository https://github.com/burgossrodrigo/vigilante
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/burgossrodrigo/vigilante" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fburgossrodrigo%2Fvigilante", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fburgossrodrigo%2Fvigilante'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 344e040d94722b8e557f3bb8dff1c276e8563fb7
[INFO] checking burgossrodrigo/vigilante against 656a9da186dacaf3bf8f7f7296a825d256cb4ae3 for pr-158915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fburgossrodrigo%2Fvigilante" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/burgossrodrigo/vigilante
[INFO] finished tweaking git repo https://github.com/burgossrodrigo/vigilante
[INFO] tweaked toml for git repo https://github.com/burgossrodrigo/vigilante written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/burgossrodrigo/vigilante on toolchain 656a9da186dacaf3bf8f7f7296a825d256cb4ae3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+656a9da186dacaf3bf8f7f7296a825d256cb4ae3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/burgossrodrigo/vigilante 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" "+656a9da186dacaf3bf8f7f7296a825d256cb4ae3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: binary `eth_block_listener` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /workspace/builds/worker-0-tc1/source/target/.../eth_block_listener
[INFO] [stderr]    |                                                  ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `eth-block-listener`, convert `package.name`
[INFO] [stderr]   --> Cargo.toml:11:8
[INFO] [stderr]    |
[INFO] [stderr] 11 - name = "eth_block_listener"
[INFO] [stderr] 11 + name = "eth-block-listener"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `eth-block-listener`, specify `bin.name`
[INFO] [stderr]   --> Cargo.toml:12:19
[INFO] [stderr]    |
[INFO] [stderr] 12 ~ version = "0.1.0"
[INFO] [stderr] 13 + [[bin]]
[INFO] [stderr] 14 + name = "eth-block-listener"
[INFO] [stderr] 15 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `eth_block_listener` (manifest) generated 1 warning
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro2 v1.0.80
[INFO] [stderr]   Downloaded jobserver v0.1.30
[INFO] [stderr]   Downloaded ethers v2.0.14
[INFO] [stderr]   Downloaded svm-rs v0.3.5
[INFO] [stderr]   Downloaded bson v2.10.0
[INFO] [stderr]   Downloaded serde_json v1.0.115
[INFO] [stderr]   Downloaded ethers-solc v2.0.14
[INFO] [stderr]   Downloaded solang-parser v0.3.3
[INFO] [stderr]   Downloaded open-fastrlp v0.1.4
[INFO] [stderr]   Downloaded open-fastrlp-derive v0.1.1
[INFO] [stderr]   Downloaded scale-info-derive v2.11.2
[INFO] [stderr]   Downloaded scale-info v2.11.2
[INFO] [stderr]   Downloaded lalrpop v0.20.2
[INFO] [stderr]   Downloaded ethers-core v2.0.14
[INFO] [stderr]   Downloaded const-hex v1.11.3
[INFO] [stderr]   Downloaded dunce v1.0.4
[INFO] [stderr]   Downloaded coins-core v0.8.7
[INFO] [stderr]   Downloaded ethers-signers v2.0.14
[INFO] [stderr]   Downloaded coins-bip32 v0.8.7
[INFO] [stderr]   Downloaded ws_stream_wasm v0.7.4
[INFO] [stderr]   Downloaded async_io_stream v0.3.3
[INFO] [stderr]   Downloaded pharos v0.5.3
[INFO] [stderr]   Downloaded futures-locks v0.7.1
[INFO] [stderr]   Downloaded ethers-addressbook v2.0.14
[INFO] [stderr]   Downloaded ethers-middleware v2.0.14
[INFO] [stderr]   Downloaded ethers-etherscan v2.0.14
[INFO] [stderr]   Downloaded jsonwebtoken v8.3.0
[INFO] [stderr]   Downloaded ethers-contract-derive v2.0.14
[INFO] [stderr]   Downloaded ethers-contract v2.0.14
[INFO] [stderr]   Downloaded ethers-contract-abigen v2.0.14
[INFO] [stderr]   Downloaded coins-bip39 v0.8.7
[INFO] [stderr]   Downloaded ethers-providers v2.0.14
[INFO] [stderr]   Downloaded enr v0.10.0
[INFO] [stderr]   Downloaded toml v0.8.12
[INFO] [stderr]   Downloaded toml_edit v0.22.9
[INFO] [stderr]   Downloaded winnow v0.6.6
[INFO] [stderr]   Downloaded mongodb v2.8.2
[INFO] [stderr]   Downloaded hashers v1.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] eb1cc29e4848c08ea05d48ad936219f7782100e31030b107ac42a3ffb93d0f63
[INFO] running `Command { std: "docker" "start" "eb1cc29e4848c08ea05d48ad936219f7782100e31030b107ac42a3ffb93d0f63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb1cc29e4848c08ea05d48ad936219f7782100e31030b107ac42a3ffb93d0f63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "eb1cc29e4848c08ea05d48ad936219f7782100e31030b107ac42a3ffb93d0f63" "/opt/rustwide/cargo-home/bin/cargo" "+656a9da186dacaf3bf8f7f7296a825d256cb4ae3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb1cc29e4848c08ea05d48ad936219f7782100e31030b107ac42a3ffb93d0f63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "eb1cc29e4848c08ea05d48ad936219f7782100e31030b107ac42a3ffb93d0f63" "/opt/rustwide/cargo-home/bin/cargo" "+656a9da186dacaf3bf8f7f7296a825d256cb4ae3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] warning: binary `eth_block_listener` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /opt/rustwide/target/.../eth_block_listener
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `eth-block-listener`, convert `package.name`
[INFO] [stderr]   --> Cargo.toml:11:8
[INFO] [stderr]    |
[INFO] [stderr] 11 - name = "eth_block_listener"
[INFO] [stderr] 11 + name = "eth-block-listener"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `eth-block-listener`, specify `bin.name`
[INFO] [stderr]   --> Cargo.toml:12:19
[INFO] [stderr]    |
[INFO] [stderr] 12 ~ version = "0.1.0"
[INFO] [stderr] 13 + [[bin]]
[INFO] [stderr] 14 + name = "eth-block-listener"
[INFO] [stderr] 15 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `eth_block_listener` (manifest) generated 1 warning
[INFO] [stderr]    Compiling proc-macro2 v1.0.80
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling hashbrown v0.14.3
[INFO] [stderr]    Compiling thiserror v1.0.58
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling zeroize v1.7.0
[INFO] [stderr]    Compiling cc v1.0.94
[INFO] [stderr]    Compiling subtle v2.5.0
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]    Compiling const-oid v0.9.6
[INFO] [stderr]     Checking hmac v0.12.1
[INFO] [stderr]    Compiling parking_lot_core v0.9.9
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking der v0.7.9
[INFO] [stderr]    Compiling serde_json v1.0.115
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling camino v1.1.6
[INFO] [stderr]    Compiling semver v1.0.22
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling rustix v0.38.32
[INFO] [stderr]    Compiling rustversion v1.0.15
[INFO] [stderr]     Checking futures-task v0.3.30
[INFO] [stderr]     Checking futures-io v0.3.30
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]    Compiling block-buffer v0.10.4
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[INFO] [stderr]     Checking unicode-normalization v0.1.23
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[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]     Checking rfc6979 v0.4.0
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]    Compiling rustc-hex v2.1.0
[INFO] [stderr]     Checking uint v0.9.5
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]     Checking aho-corasick v1.1.3
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[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking spki v0.7.3
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[INFO] [stderr]     Checking indexmap v2.2.6
[INFO] [stderr]    Compiling rand_core v0.6.4
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[INFO] [stderr]     Checking num_cpus v1.16.0
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[INFO] [stderr]    Compiling rustls v0.21.10
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking ff v0.13.0
[INFO] [stderr]     Checking crypto-bigint v0.5.5
[INFO] [stderr]     Checking signature v2.2.0
[INFO] [stderr]     Checking regex-syntax v0.8.3
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[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]     Checking group v0.13.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking linux-raw-sys v0.4.13
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[INFO] [stderr]    Compiling memchr v2.7.2
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[INFO] [stderr]     Checking chrono v0.4.38
[INFO] [stderr]     Checking fixed-hash v0.8.0
[INFO] [stderr]    Compiling time-core v0.1.2
[INFO] [stderr]    Compiling base16ct v0.2.0
[INFO] [stderr]     Checking fastrand v2.0.2
[INFO] [stderr]     Checking deranged v0.3.11
[INFO] [stderr]    Compiling time-macros v0.2.18
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[INFO] [stderr]    Compiling eyre v0.6.12
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[INFO] [stderr]     Checking elliptic-curve v0.13.8
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[INFO] [stderr]     Checking data-encoding v2.5.0
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[INFO] [stderr]     Checking unicode-xid v0.2.4
[INFO] [stderr]     Checking cipher v0.4.4
[INFO] [stderr]     Checking ecdsa v0.16.9
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]    Compiling keccak v0.1.5
[INFO] [stderr]     Checking k256 v0.13.3
[INFO] [stderr]     Checking time v0.3.36
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking tempfile v3.10.1
[INFO] [stderr]    Compiling winnow v0.6.6
[INFO] [stderr]     Checking bitvec v1.0.1
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[INFO] [stderr]     Checking pbkdf2 v0.11.0
[INFO] [stderr]     Checking ripemd v0.1.3
[INFO] [stderr]     Checking sha1 v0.10.6
[INFO] [stderr]     Checking encoding_rs v0.8.34
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]    Compiling indenter v0.3.3
[INFO] [stderr]    Compiling darling_core v0.13.4
[INFO] [stderr]     Checking regex v1.10.4
[INFO] [stderr]    Compiling walkdir v2.5.0
[INFO] [stderr]     Checking pem v1.1.1
[INFO] [stderr]     Checking salsa20 v0.10.2
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]    Compiling dunce v1.0.4
[INFO] [stderr]     Checking send_wrapper v0.4.0
[INFO] [stderr]     Checking scrypt v0.10.0
[INFO] [stderr]     Checking hashers v1.0.1
[INFO] [stderr]     Checking ctr v0.9.2
[INFO] [stderr]     Checking aes v0.8.4
[INFO] [stderr]     Checking Inflector v0.11.4
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[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.92
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[INFO] [stderr]     Checking match_cfg v0.1.0
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking hostname v0.3.1
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]    Compiling rustc_version_runtime v0.2.1
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[INFO] [stderr]     Checking zerocopy v0.7.32
[INFO] [stderr]     Checking rustc_version v0.2.3
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[INFO] [stderr]     Checking resolv-conf v0.7.0
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[INFO] [stderr]     Checking sct v0.7.1
[INFO] [stderr]     Checking ahash v0.8.11
[INFO] [stderr]     Checking futures-locks v0.7.1
[INFO] [stderr]     Checking finl_unicode v1.2.0
[INFO] [stderr]     Checking socket2 v0.4.10
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.92
[INFO] [stderr]     Checking stringprep v0.1.4
[INFO] [stderr]     Checking md-5 v0.10.6
[INFO] [stderr]     Checking sha-1 v0.10.1
[INFO] [stderr]     Checking take_mut v0.2.2
[INFO] [stderr]    Compiling impl-trait-for-tuples v0.2.2
[INFO] [stderr]    Compiling rlp-derive v0.1.0
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]    Compiling enum-as-inner v0.4.0
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling typed-builder v0.10.0
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling strum_macros v0.26.2
[INFO] [stderr]    Compiling auto_impl v1.2.0
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.92
[INFO] [stderr]    Compiling async-trait v0.1.80
[INFO] [stderr]     Checking wasm-bindgen v0.2.92
[INFO] [stderr]    Compiling pin-project-internal v1.1.5
[INFO] [stderr]    Compiling darling_macro v0.13.4
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[INFO] [stderr]     Checking js-sys v0.3.69
[INFO] [stderr]     Checking simple_asn1 v0.6.2
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[INFO] [stderr]    Compiling serde_with_macros v1.5.2
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[INFO] [stderr]     Checking strum v0.26.2
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[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking serde_spanned v0.6.5
[INFO] [stderr]     Checking coins-core v0.8.7
[INFO] [stderr]     Checking uuid v0.8.2
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[INFO] [stderr]    Compiling toml_edit v0.20.7
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[INFO] [stderr]    Compiling toml_edit v0.21.1
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[INFO] [stderr]     Checking cargo_metadata v0.18.1
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[INFO] [stderr]     Checking eth-keystore v0.5.0
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[INFO] [stderr]    Compiling proc-macro-crate v3.1.0
[INFO] [stderr]    Compiling proc-macro-crate v1.3.1
[INFO] [stderr]    Compiling proc-macro-crate v2.0.0
[INFO] [stderr]    Compiling num_enum_derive v0.7.2
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[INFO] [stderr]     Checking ethers-providers v2.0.14
[INFO] [stderr]     Checking ethers-signers v2.0.14
[INFO] [stderr]     Checking ethers-etherscan v2.0.14
[INFO] [stderr]     Checking ethers-addressbook v2.0.14
[INFO] [stderr]    Compiling ethers-contract-derive v2.0.14
[INFO] [stderr]     Checking ethers-contract v2.0.14
[INFO] [stderr]     Checking ethers-middleware v2.0.14
[INFO] [stderr]     Checking ethers v2.0.14
[INFO] [stderr]     Checking eth_block_listener v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `types::Transaction`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     types::Transaction,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout] 38 |         let mut provider = provider_clone.lock().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] [stdout] warning: unused variable: `none`
[INFO] [stdout]   --> src/main.rs:54:20
[INFO] [stdout]    |
[INFO] [stdout] 54 |                 Ok(none) => eprint!("Block not found for hash: {:?}", block_hash),
[INFO] [stdout]    |                    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: you might have meant to pattern match on the similarly named variant `None`
[INFO] [stdout]    |
[INFO] [stdout] 54 -                 Ok(none) => eprint!("Block not found for hash: {:?}", block_hash),
[INFO] [stdout] 54 +                 Ok(std::prelude::v1::None) => eprint!("Block not found for hash: {:?}", block_hash),
[INFO] [stdout]    |
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]    |
[INFO] [stdout] 54 |                 Ok(_none) => eprint!("Block not found for hash: {:?}", block_hash),
[INFO] [stdout]    |                    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `types::Transaction`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     types::Transaction,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout] 38 |         let mut provider = provider_clone.lock().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] [stdout] warning: unused variable: `none`
[INFO] [stdout]   --> src/main.rs:54:20
[INFO] [stdout]    |
[INFO] [stdout] 54 |                 Ok(none) => eprint!("Block not found for hash: {:?}", block_hash),
[INFO] [stdout]    |                    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: you might have meant to pattern match on the similarly named variant `None`
[INFO] [stdout]    |
[INFO] [stdout] 54 -                 Ok(none) => eprint!("Block not found for hash: {:?}", block_hash),
[INFO] [stdout] 54 +                 Ok(std::prelude::v1::None) => eprint!("Block not found for hash: {:?}", block_hash),
[INFO] [stdout]    |
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]    |
[INFO] [stdout] 54 |                 Ok(_none) => eprint!("Block not found for hash: {:?}", block_hash),
[INFO] [stdout]    |                    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: unused dependency `mongodb`
[INFO] [stderr]  --> Cargo.toml:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | mongodb = "2.0.0"
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `cargo::unused_dependencies` is set to `warn` by default
[INFO] [stderr] help: consider removing the dependency on `mongodb`
[INFO] [stderr] warning: `eth_block_listener` (manifest) generated 1 warning
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 39s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: ethereum-types v0.14.1, ethers-contract-abigen v2.0.14, primitive-types v0.12.2
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 8`
[INFO] running `Command { std: "docker" "inspect" "eb1cc29e4848c08ea05d48ad936219f7782100e31030b107ac42a3ffb93d0f63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb1cc29e4848c08ea05d48ad936219f7782100e31030b107ac42a3ffb93d0f63", kill_on_drop: false }`
[INFO] [stdout] eb1cc29e4848c08ea05d48ad936219f7782100e31030b107ac42a3ffb93d0f63
