[INFO] fetching crate etclient 0.3.0... [INFO] checking etclient-0.3.0 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526 [INFO] extracting crate etclient 0.3.0 into /workspace/builds/worker-7/source [INFO] validating manifest of crates.io crate etclient 0.3.0 on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking crates.io crate etclient 0.3.0 [INFO] finished tweaking crates.io crate etclient 0.3.0 [INFO] tweaked toml for crates.io crate etclient 0.3.0 written to /workspace/builds/worker-7/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded tokio-timer-plus v0.1.3 [INFO] [stderr] Downloaded ethash v0.3.1 [INFO] [stderr] Downloaded ethereum-block-core v0.1.0 [INFO] [stderr] Downloaded evm v0.9.4 [INFO] [stderr] Downloaded dpt v0.3.1 [INFO] [stderr] Downloaded evm-stateful v0.9.2 [INFO] [stderr] Downloaded devp2p v0.4.1 [INFO] [stderr] Downloaded rlpx v0.4.1 [INFO] [stderr] Downloaded ethereum-block v0.3.5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 6f8a3f5677dd2162d37d3647e770f109081c29242d14c8aa605b4686136c338e [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "6f8a3f5677dd2162d37d3647e770f109081c29242d14c8aa605b4686136c338e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "6f8a3f5677dd2162d37d3647e770f109081c29242d14c8aa605b4686136c338e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6f8a3f5677dd2162d37d3647e770f109081c29242d14c8aa605b4686136c338e", kill_on_drop: false }` [INFO] [stdout] 6f8a3f5677dd2162d37d3647e770f109081c29242d14c8aa605b4686136c338e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 8f1900d69af2555910739398b5f581025fac9b716ce27525a25b19bee4a5c9ba [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "8f1900d69af2555910739398b5f581025fac9b716ce27525a25b19bee4a5c9ba", kill_on_drop: false }` [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling byteorder v1.3.4 [INFO] [stderr] Compiling typenum v1.12.0 [INFO] [stderr] Checking nodrop v0.1.14 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Checking scopeguard v1.1.0 [INFO] [stderr] Checking byte-tools v0.2.0 [INFO] [stderr] Checking slab v0.4.2 [INFO] [stderr] Checking elastic-array-plus v0.9.1 [INFO] [stderr] Checking lazy_static v0.2.11 [INFO] [stderr] Checking ethereum-hexutil v0.2.3 [INFO] [stderr] Checking constant_time_eq v0.1.5 [INFO] [stderr] Checking fnv v1.0.7 [INFO] [stderr] Checking fake-simd v0.1.2 [INFO] [stderr] Compiling winapi-build v0.1.1 [INFO] [stderr] Checking arrayref v0.3.6 [INFO] [stderr] Checking winapi v0.2.8 [INFO] [stderr] Compiling gcc v0.3.55 [INFO] [stderr] Checking matches v0.1.8 [INFO] [stderr] Checking tinyvec v0.3.4 [INFO] [stderr] Compiling unicode-xid v0.2.1 [INFO] [stderr] Checking blockchain v0.2.0 [INFO] [stderr] Checking scoped-tls v0.1.2 [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Checking slab v0.3.0 [INFO] [stderr] Compiling syn v1.0.42 [INFO] [stderr] Compiling serde v1.0.116 [INFO] [stderr] Checking percent-encoding v1.0.1 [INFO] [stderr] Checking rustc-serialize v0.3.24 [INFO] [stderr] Compiling serde_derive v1.0.116 [INFO] [stderr] Checking utf8-ranges v0.1.3 [INFO] [stderr] Checking regex-syntax v0.3.9 [INFO] [stderr] Checking lock_api v0.3.4 [INFO] [stderr] Checking tokio-sync v0.1.8 [INFO] [stderr] Checking unicode-bidi v0.3.4 [INFO] [stderr] Checking tokio-timer-plus v0.1.3 [INFO] [stderr] Compiling kernel32-sys v0.2.2 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Checking log v0.4.11 [INFO] [stderr] Checking unicode-normalization v0.1.13 [INFO] [stderr] Compiling proc-macro2 v1.0.24 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Checking net2 v0.2.35 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking time v0.1.44 [INFO] [stderr] Checking memchr v0.1.11 [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 log v0.3.9 [INFO] [stderr] Checking aho-corasick v0.5.3 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Checking mio v0.6.22 [INFO] [stderr] Checking thread-id v2.0.0 [INFO] [stderr] Compiling quote v1.0.7 [INFO] [stderr] Checking thread_local v0.2.7 [INFO] [stderr] Checking bytes v0.4.12 [INFO] [stderr] Checking ethereum-rlp v0.2.3 [INFO] [stderr] Checking regex v0.1.80 [INFO] [stderr] Checking mio-uds v0.6.8 [INFO] [stderr] Compiling parking_lot_core v0.6.2 [INFO] [stderr] Compiling parking_lot v0.9.0 [INFO] [stderr] Compiling rust-crypto v0.2.36 [INFO] [stderr] Checking ethereum-bigint v0.2.9 [INFO] [stderr] Checking idna v0.1.5 [INFO] [stderr] Checking tokio-executor v0.1.10 [INFO] [stderr] Checking crossbeam-queue v0.2.3 [INFO] [stderr] Checking tokio-io v0.1.13 [INFO] [stderr] Checking generic-array v0.8.3 [INFO] [stderr] Checking tokio-timer v0.2.13 [INFO] [stderr] Checking tokio-current-thread v0.1.7 [INFO] [stderr] Checking digest v0.6.2 [INFO] [stderr] Checking block-buffer v0.2.0 [INFO] [stderr] Checking crypto-mac v0.4.0 [INFO] [stderr] Checking crossbeam-deque v0.7.3 [INFO] [stderr] Checking tokio-codec v0.1.2 [INFO] [stderr] Checking sha3 v0.6.0 [INFO] [stderr] Checking sha2 v0.6.0 [INFO] [stderr] Checking ripemd160 v0.6.0 [INFO] [stderr] Checking hmac v0.4.2 [INFO] [stderr] Checking tokio-threadpool v0.1.18 [INFO] [stderr] Checking hmac-drbg v0.1.2 [INFO] [stderr] Checking tokio-reactor v0.1.12 [INFO] [stderr] Checking url v1.7.2 [INFO] [stderr] Checking libsecp256k1 v0.1.15 [INFO] [stderr] Checking env_logger v0.3.5 [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 ethereum-block-core v0.1.0 [INFO] [stderr] Checking ethereum-trie v0.3.8 [INFO] [stderr] Checking ethereum-bloom v0.2.1 [INFO] [stderr] Checking ethash v0.3.1 [INFO] [stderr] Checking tokio-fs v0.1.7 [INFO] [stderr] Checking tokio v0.1.22 [INFO] [stderr] Checking tokio-core v0.1.17 [INFO] [stderr] Checking serde_json v1.0.58 [INFO] [stderr] Checking ethereum-block v0.3.5 [INFO] [stderr] Checking dpt v0.3.1 [INFO] [stderr] Checking rlpx v0.4.1 [INFO] [stderr] Checking evm v0.9.4 [INFO] [stderr] Checking devp2p v0.4.1 [INFO] [stderr] Checking evm-stateful v0.9.2 [INFO] [stderr] Checking etclient v0.3.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused `#[macro_use]` import [INFO] [stdout] --> src/main.rs:19:1 [INFO] [stdout] | [INFO] [stdout] 19 | #[macro_use] [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `MemoryStateful` [INFO] [stdout] --> src/validator/genesis.rs:2:30 [INFO] [stdout] | [INFO] [stdout] 2 | use evm_stateful::{Stateful, MemoryStateful}; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Block`, `TotalHeader`, `Transaction` [INFO] [stdout] --> src/validator/genesis.rs:4:21 [INFO] [stdout] | [INFO] [stdout] 4 | use block::{Header, Block, TotalHeader, Transaction, TransactionAction}; [INFO] [stdout] | ^^^^^ ^^^^^^^^^^^ ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `DatabaseGuard` [INFO] [stdout] --> src/validator/genesis.rs:5:12 [INFO] [stdout] | [INFO] [stdout] 5 | use trie::{DatabaseGuard, DatabaseOwned, MemoryTrie}; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `ethash` [INFO] [stdout] --> src/validator/genesis.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 10 | use ethash; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `FixedMemoryTrie` [INFO] [stdout] --> src/validator/mod.rs:3:28 [INFO] [stdout] | [INFO] [stdout] 3 | use trie::{MemoryDatabase, FixedMemoryTrie}; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `H64` [INFO] [stdout] --> src/validator/mod.rs:4:26 [INFO] [stdout] | [INFO] [stdout] 4 | use bigint::{U256, H256, H64, Gas}; [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Transaction`, `ommers_hash`, `transactions_root` [INFO] [stdout] --> src/validator/mod.rs:5:43 [INFO] [stdout] | [INFO] [stdout] 5 | use block::{Header, Receipt, TotalHeader, Transaction, Block, Log, TransactionAction, ommers_hash, transactions_root, receipts_root}; [INFO] [stdout] | ^^^^^^^^^^^ ^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Keccak256` [INFO] [stdout] --> src/validator/mod.rs:7:20 [INFO] [stdout] | [INFO] [stdout] 7 | use sha3::{Digest, Keccak256}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `rlp` [INFO] [stdout] --> src/validator/mod.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | use rlp; [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/validator/mod.rs:78:36 [INFO] [stdout] | [INFO] [stdout] 78 | let mut validator: Box = if block.header.number < U256::from(1150000) { [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn Validator` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `PublicKey` [INFO] [stdout] --> src/main.rs:32:17 [INFO] [stdout] | [INFO] [stdout] 32 | use secp256k1::{PublicKey, SecretKey}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `H512` [INFO] [stdout] --> src/main.rs:42:26 [INFO] [stdout] | [INFO] [stdout] 42 | use bigint::{H256, U256, H512}; [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Keccak256` [INFO] [stdout] --> src/main.rs:44:20 [INFO] [stdout] | [INFO] [stdout] 44 | use sha3::{Digest, Keccak256}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `receipts_root` [INFO] [stdout] --> src/main.rs:45:73 [INFO] [stdout] | [INFO] [stdout] 45 | use block::{Header, Block, Transaction, transactions_root, ommers_hash, receipts_root}; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `#[macro_use]` import [INFO] [stdout] --> src/main.rs:19:1 [INFO] [stdout] | [INFO] [stdout] 19 | #[macro_use] [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Block`, `TotalHeader`, `Transaction` [INFO] [stdout] --> src/validator/genesis.rs:4:21 [INFO] [stdout] | [INFO] [stdout] 4 | use block::{Header, Block, TotalHeader, Transaction, TransactionAction}; [INFO] [stdout] | ^^^^^ ^^^^^^^^^^^ ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `DatabaseGuard` [INFO] [stdout] --> src/validator/genesis.rs:5:12 [INFO] [stdout] | [INFO] [stdout] 5 | use trie::{DatabaseGuard, DatabaseOwned, MemoryTrie}; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `ethash` [INFO] [stdout] --> src/validator/genesis.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 10 | use ethash; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `ethash` [INFO] [stdout] --> src/validator/genesis.rs:81:9 [INFO] [stdout] | [INFO] [stdout] 81 | use ethash; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `FixedMemoryTrie` [INFO] [stdout] --> src/validator/mod.rs:3:28 [INFO] [stdout] | [INFO] [stdout] 3 | use trie::{MemoryDatabase, FixedMemoryTrie}; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `H64` [INFO] [stdout] --> src/validator/mod.rs:4:26 [INFO] [stdout] | [INFO] [stdout] 4 | use bigint::{U256, H256, H64, Gas}; [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Transaction`, `ommers_hash`, `transactions_root` [INFO] [stdout] --> src/validator/mod.rs:5:43 [INFO] [stdout] | [INFO] [stdout] 5 | use block::{Header, Receipt, TotalHeader, Transaction, Block, Log, TransactionAction, ommers_hash, transactions_root, receipts_root}; [INFO] [stdout] | ^^^^^^^^^^^ ^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Keccak256` [INFO] [stdout] --> src/validator/mod.rs:7:20 [INFO] [stdout] | [INFO] [stdout] 7 | use sha3::{Digest, Keccak256}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `rlp` [INFO] [stdout] --> src/validator/mod.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | use rlp; [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/validator/mod.rs:78:36 [INFO] [stdout] | [INFO] [stdout] 78 | let mut validator: Box = if block.header.number < U256::from(1150000) { [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn Validator` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `PublicKey` [INFO] [stdout] --> src/main.rs:32:17 [INFO] [stdout] | [INFO] [stdout] 32 | use secp256k1::{PublicKey, SecretKey}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `H512` [INFO] [stdout] --> src/main.rs:42:26 [INFO] [stdout] | [INFO] [stdout] 42 | use bigint::{H256, U256, H512}; [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Keccak256` [INFO] [stdout] --> src/main.rs:44:20 [INFO] [stdout] | [INFO] [stdout] 44 | use sha3::{Digest, Keccak256}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `receipts_root` [INFO] [stdout] --> src/main.rs:45:73 [INFO] [stdout] | [INFO] [stdout] 45 | use block::{Header, Block, Transaction, transactions_root, ommers_hash, receipts_root}; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated associated function `futures::Future::boxed`: removed without replacement, recommended to use a local extension trait or function if needed, more details in https://github.com/rust-lang-nursery/futures-rs/issues/228 [INFO] [stdout] --> src/main.rs:151:59 [INFO] [stdout] | [INFO] [stdout] 151 | let mut timeout = Timeout::new(dur, &handle).unwrap().boxed(); [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated associated function `futures::Future::boxed`: removed without replacement, recommended to use a local extension trait or function if needed, more details in https://github.com/rust-lang-nursery/futures-rs/issues/228 [INFO] [stdout] --> src/main.rs:166:29 [INFO] [stdout] | [INFO] [stdout] 166 | timeout = t.boxed(); [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated associated function `futures::Future::boxed`: removed without replacement, recommended to use a local extension trait or function if needed, more details in https://github.com/rust-lang-nursery/futures-rs/issues/228 [INFO] [stdout] --> src/main.rs:198:63 [INFO] [stdout] | [INFO] [stdout] 198 | timeout = Timeout::new(dur, &handle).unwrap().boxed(); [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated associated function `futures::Future::boxed`: removed without replacement, recommended to use a local extension trait or function if needed, more details in https://github.com/rust-lang-nursery/futures-rs/issues/228 [INFO] [stdout] --> src/main.rs:151:59 [INFO] [stdout] | [INFO] [stdout] 151 | let mut timeout = Timeout::new(dur, &handle).unwrap().boxed(); [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated associated function `futures::Future::boxed`: removed without replacement, recommended to use a local extension trait or function if needed, more details in https://github.com/rust-lang-nursery/futures-rs/issues/228 [INFO] [stdout] --> src/main.rs:297:71 [INFO] [stdout] | [INFO] [stdout] 297 | timeout = Timeout::new(dur, &handle).unwrap().boxed(); [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated associated function `futures::Future::boxed`: removed without replacement, recommended to use a local extension trait or function if needed, more details in https://github.com/rust-lang-nursery/futures-rs/issues/228 [INFO] [stdout] --> src/main.rs:166:29 [INFO] [stdout] | [INFO] [stdout] 166 | timeout = t.boxed(); [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated associated function `futures::Future::boxed`: removed without replacement, recommended to use a local extension trait or function if needed, more details in https://github.com/rust-lang-nursery/futures-rs/issues/228 [INFO] [stdout] --> src/main.rs:198:63 [INFO] [stdout] | [INFO] [stdout] 198 | timeout = Timeout::new(dur, &handle).unwrap().boxed(); [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated associated function `futures::Future::boxed`: removed without replacement, recommended to use a local extension trait or function if needed, more details in https://github.com/rust-lang-nursery/futures-rs/issues/228 [INFO] [stdout] --> src/main.rs:297:71 [INFO] [stdout] | [INFO] [stdout] 297 | timeout = Timeout::new(dur, &handle).unwrap().boxed(); [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Digest` [INFO] [stdout] --> src/validator/mod.rs:7:12 [INFO] [stdout] | [INFO] [stdout] 7 | use sha3::{Digest, Keccak256}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Digest` [INFO] [stdout] --> src/main.rs:44:12 [INFO] [stdout] | [INFO] [stdout] 44 | use sha3::{Digest, Keccak256}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/main.rs:88:9 [INFO] [stdout] | [INFO] [stdout] 88 | for i in validated_number..headers.len() { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `when` [INFO] [stdout] --> src/main.rs:147:9 [INFO] [stdout] | [INFO] [stdout] 147 | let mut when = Instant::now() + dur; [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_when` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `version` [INFO] [stdout] --> src/main.rs:211:29 [INFO] [stdout] | [INFO] [stdout] 211 | node, data, version [INFO] [stdout] | ^^^^^^^ help: try ignoring the field: `version: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `max_headers` [INFO] [stdout] --> src/main.rs:221:33 [INFO] [stdout] | [INFO] [stdout] 221 | number, max_headers, skip, reverse [INFO] [stdout] | ^^^^^^^^^^^ help: try ignoring the field: `max_headers: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `skip` [INFO] [stdout] --> src/main.rs:221:46 [INFO] [stdout] | [INFO] [stdout] 221 | number, max_headers, skip, reverse [INFO] [stdout] | ^^^^ help: try ignoring the field: `skip: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `reverse` [INFO] [stdout] --> src/main.rs:221:52 [INFO] [stdout] | [INFO] [stdout] 221 | number, max_headers, skip, reverse [INFO] [stdout] | ^^^^^^^ help: try ignoring the field: `reverse: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `max_headers` [INFO] [stdout] --> src/main.rs:241:31 [INFO] [stdout] | [INFO] [stdout] 241 | hash, max_headers, skip, reverse [INFO] [stdout] | ^^^^^^^^^^^ help: try ignoring the field: `max_headers: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `skip` [INFO] [stdout] --> src/main.rs:241:44 [INFO] [stdout] | [INFO] [stdout] 241 | hash, max_headers, skip, reverse [INFO] [stdout] | ^^^^ help: try ignoring the field: `skip: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `reverse` [INFO] [stdout] --> src/main.rs:241:50 [INFO] [stdout] | [INFO] [stdout] 241 | hash, max_headers, skip, reverse [INFO] [stdout] | ^^^^^^^ help: try ignoring the field: `reverse: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `difficulty_bound_divisor` [INFO] [stdout] --> src/validator/mod.rs:32:9 [INFO] [stdout] | [INFO] [stdout] 32 | let difficulty_bound_divisor = U256::from(0x0800); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_difficulty_bound_divisor` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `duration_limit` [INFO] [stdout] --> src/validator/mod.rs:34:9 [INFO] [stdout] | [INFO] [stdout] 34 | let duration_limit = 0x0d; [INFO] [stdout] | ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_duration_limit` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `frontier_limit` [INFO] [stdout] --> src/validator/mod.rs:35:9 [INFO] [stdout] | [INFO] [stdout] 35 | let frontier_limit = U256::from(1150000); [INFO] [stdout] | ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_frontier_limit` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `result` [INFO] [stdout] --> src/validator/mod.rs:144:24 [INFO] [stdout] | [INFO] [stdout] 144 | let (mix_hash, result) = self.dag.hashimoto(self.current_block.header.partial_hash(), [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `vm` [INFO] [stdout] --> src/validator/mod.rs:222:13 [INFO] [stdout] | [INFO] [stdout] 222 | let vm: SeqTransactionVM = stateful.execute( [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_vm` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `vm` [INFO] [stdout] --> src/validator/mod.rs:234:17 [INFO] [stdout] | [INFO] [stdout] 234 | let vm: SeqTransactionVM = stateful.execute( [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_vm` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `number` [INFO] [stdout] --> src/patch.rs:26:21 [INFO] [stdout] | [INFO] [stdout] 26 | fn block_reward(number: U256, uncles: usize) -> U256 { P::base_reward() + P::base_reward().shr(5) * U256::from(uncles) } [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_number` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `uncles` [INFO] [stdout] --> src/patch.rs:51:35 [INFO] [stdout] | [INFO] [stdout] 51 | fn block_reward(number: U256, uncles: usize) -> U256 { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_uncles` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `distance` [INFO] [stdout] --> src/patch.rs:59:21 [INFO] [stdout] | [INFO] [stdout] 59 | fn uncle_reward(distance: U256) -> U256 { [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_distance` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:119:9 [INFO] [stdout] | [INFO] [stdout] 119 | let mut client = ETHStream::new( [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:143:9 [INFO] [stdout] | [INFO] [stdout] 143 | let mut got_bodies_for_current = true; [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/main.rs:147:9 [INFO] [stdout] | [INFO] [stdout] 147 | let mut when = Instant::now() + dur; [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/main.rs:149:29 [INFO] [stdout] | [INFO] [stdout] 149 | let (mut client_sender, mut client_receiver) = client.split(); [INFO] [stdout] | ----^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Digest` [INFO] [stdout] --> src/validator/mod.rs:7:12 [INFO] [stdout] | [INFO] [stdout] 7 | use sha3::{Digest, Keccak256}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Digest` [INFO] [stdout] --> src/main.rs:44:12 [INFO] [stdout] | [INFO] [stdout] 44 | use sha3::{Digest, Keccak256}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/main.rs:88:9 [INFO] [stdout] | [INFO] [stdout] 88 | for i in validated_number..headers.len() { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `when` [INFO] [stdout] --> src/main.rs:147:9 [INFO] [stdout] | [INFO] [stdout] 147 | let mut when = Instant::now() + dur; [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_when` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `version` [INFO] [stdout] --> src/main.rs:211:29 [INFO] [stdout] | [INFO] [stdout] 211 | node, data, version [INFO] [stdout] | ^^^^^^^ help: try ignoring the field: `version: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `max_headers` [INFO] [stdout] --> src/main.rs:221:33 [INFO] [stdout] | [INFO] [stdout] 221 | number, max_headers, skip, reverse [INFO] [stdout] | ^^^^^^^^^^^ help: try ignoring the field: `max_headers: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `skip` [INFO] [stdout] --> src/main.rs:221:46 [INFO] [stdout] | [INFO] [stdout] 221 | number, max_headers, skip, reverse [INFO] [stdout] | ^^^^ help: try ignoring the field: `skip: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `reverse` [INFO] [stdout] --> src/main.rs:221:52 [INFO] [stdout] | [INFO] [stdout] 221 | number, max_headers, skip, reverse [INFO] [stdout] | ^^^^^^^ help: try ignoring the field: `reverse: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `max_headers` [INFO] [stdout] --> src/main.rs:241:31 [INFO] [stdout] | [INFO] [stdout] 241 | hash, max_headers, skip, reverse [INFO] [stdout] | ^^^^^^^^^^^ help: try ignoring the field: `max_headers: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `skip` [INFO] [stdout] --> src/main.rs:241:44 [INFO] [stdout] | [INFO] [stdout] 241 | hash, max_headers, skip, reverse [INFO] [stdout] | ^^^^ help: try ignoring the field: `skip: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `reverse` [INFO] [stdout] --> src/main.rs:241:50 [INFO] [stdout] | [INFO] [stdout] 241 | hash, max_headers, skip, reverse [INFO] [stdout] | ^^^^^^^ help: try ignoring the field: `reverse: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `difficulty_bound_divisor` [INFO] [stdout] --> src/validator/mod.rs:32:9 [INFO] [stdout] | [INFO] [stdout] 32 | let difficulty_bound_divisor = U256::from(0x0800); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_difficulty_bound_divisor` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `duration_limit` [INFO] [stdout] --> src/validator/mod.rs:34:9 [INFO] [stdout] | [INFO] [stdout] 34 | let duration_limit = 0x0d; [INFO] [stdout] | ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_duration_limit` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `frontier_limit` [INFO] [stdout] --> src/validator/mod.rs:35:9 [INFO] [stdout] | [INFO] [stdout] 35 | let frontier_limit = U256::from(1150000); [INFO] [stdout] | ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_frontier_limit` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `result` [INFO] [stdout] --> src/validator/mod.rs:144:24 [INFO] [stdout] | [INFO] [stdout] 144 | let (mix_hash, result) = self.dag.hashimoto(self.current_block.header.partial_hash(), [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `vm` [INFO] [stdout] --> src/validator/mod.rs:222:13 [INFO] [stdout] | [INFO] [stdout] 222 | let vm: SeqTransactionVM = stateful.execute( [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_vm` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `vm` [INFO] [stdout] --> src/validator/mod.rs:234:17 [INFO] [stdout] | [INFO] [stdout] 234 | let vm: SeqTransactionVM = stateful.execute( [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_vm` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `number` [INFO] [stdout] --> src/patch.rs:26:21 [INFO] [stdout] | [INFO] [stdout] 26 | fn block_reward(number: U256, uncles: usize) -> U256 { P::base_reward() + P::base_reward().shr(5) * U256::from(uncles) } [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_number` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `uncles` [INFO] [stdout] --> src/patch.rs:51:35 [INFO] [stdout] | [INFO] [stdout] 51 | fn block_reward(number: U256, uncles: usize) -> U256 { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_uncles` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `distance` [INFO] [stdout] --> src/patch.rs:59:21 [INFO] [stdout] | [INFO] [stdout] 59 | fn uncle_reward(distance: U256) -> U256 { [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_distance` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/validator/genesis.rs:20:9 [INFO] [stdout] | [INFO] [stdout] 20 | let mut header = Header { [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/validator/genesis.rs:50:9 [INFO] [stdout] | [INFO] [stdout] 50 | let mut accounts: Vec<(&String, &JSONAccount)> = genesis_accounts.iter().collect(); [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/main.rs:119:9 [INFO] [stdout] | [INFO] [stdout] 119 | let mut client = ETHStream::new( [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant is never used: `NETWORK_ID` [INFO] [stdout] --> src/main.rs:51:1 [INFO] [stdout] | [INFO] [stdout] 51 | const NETWORK_ID: usize = 1; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:143:9 [INFO] [stdout] | [INFO] [stdout] 143 | let mut got_bodies_for_current = true; [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/main.rs:147:9 [INFO] [stdout] | [INFO] [stdout] 147 | let mut when = Instant::now() + dur; [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/main.rs:149:29 [INFO] [stdout] | [INFO] [stdout] 149 | let (mut client_sender, mut client_receiver) = client.split(); [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/validator/genesis.rs:20:9 [INFO] [stdout] | [INFO] [stdout] 20 | let mut header = Header { [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/validator/genesis.rs:50:9 [INFO] [stdout] | [INFO] [stdout] 50 | let mut accounts: Vec<(&String, &JSONAccount)> = genesis_accounts.iter().collect(); [INFO] [stdout] | ----^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/main.rs:111:5 [INFO] [stdout] | [INFO] [stdout] 111 | env_logger::init(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 47 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant is never used: `NETWORK_ID` [INFO] [stdout] --> src/main.rs:51:1 [INFO] [stdout] | [INFO] [stdout] 51 | const NETWORK_ID: usize = 1; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/main.rs:111:5 [INFO] [stdout] | [INFO] [stdout] 111 | env_logger::init(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 47 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 55.29s [INFO] running `Command { std: "docker" "inspect" "8f1900d69af2555910739398b5f581025fac9b716ce27525a25b19bee4a5c9ba", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8f1900d69af2555910739398b5f581025fac9b716ce27525a25b19bee4a5c9ba", kill_on_drop: false }` [INFO] [stdout] 8f1900d69af2555910739398b5f581025fac9b716ce27525a25b19bee4a5c9ba