[INFO] cloning repository https://github.com/qaoo8/simple-blockchain-by-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/qaoo8/simple-blockchain-by-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqaoo8%2Fsimple-blockchain-by-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqaoo8%2Fsimple-blockchain-by-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 760bc3c51ab8728e7da842bbdffde73267b392db
[INFO] checking qaoo8/simple-blockchain-by-rust against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqaoo8%2Fsimple-blockchain-by-rust" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/qaoo8/simple-blockchain-by-rust on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/qaoo8/simple-blockchain-by-rust
[INFO] finished tweaking git repo https://github.com/qaoo8/simple-blockchain-by-rust
[INFO] tweaked toml for git repo https://github.com/qaoo8/simple-blockchain-by-rust written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/qaoo8/simple-blockchain-by-rust 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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bitcoin_hashes v0.7.6
[INFO] [stderr]   Downloaded bitcoincash-addr v0.5.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 97a470fb8ade6f03b672feb87a300df20a45f08c2d57fd36b0488c15690dd6ee
[INFO] running `Command { std: "docker" "start" "-a" "97a470fb8ade6f03b672feb87a300df20a45f08c2d57fd36b0488c15690dd6ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "97a470fb8ade6f03b672feb87a300df20a45f08c2d57fd36b0488c15690dd6ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97a470fb8ade6f03b672feb87a300df20a45f08c2d57fd36b0488c15690dd6ee", kill_on_drop: false }`
[INFO] [stdout] 97a470fb8ade6f03b672feb87a300df20a45f08c2d57fd36b0488c15690dd6ee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8c254aa67fcbc6833bbb72f7342b71c0f2db907b499914f56a58f409a494e8af
[INFO] running `Command { std: "docker" "start" "-a" "8c254aa67fcbc6833bbb72f7342b71c0f2db907b499914f56a58f409a494e8af", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling autocfg v1.3.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling serde v1.0.204
[INFO] [stderr]    Compiling crossbeam-utils v0.8.20
[INFO] [stderr]    Compiling cc v1.1.6
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]     Checking utf8parse v0.2.2
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]     Checking anstyle-parse v0.2.4
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking instant v0.1.13
[INFO] [stderr]     Checking anstyle-query v1.1.0
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]     Checking is_terminal_polyfill v1.70.0
[INFO] [stderr]     Checking anstyle v1.0.7
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]     Checking colorchoice v1.0.1
[INFO] [stderr]     Checking gimli v0.29.0
[INFO] [stderr]    Compiling syn v2.0.72
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking regex-syntax v0.8.4
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]    Compiling backtrace v0.3.73
[INFO] [stderr]     Checking miniz_oxide v0.7.4
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking anstream v0.6.14
[INFO] [stderr]     Checking object v0.36.2
[INFO] [stderr]     Checking clap_lex v0.7.1
[INFO] [stderr]     Checking rustc-demangle v0.1.24
[INFO] [stderr]    Compiling serde_json v1.0.120
[INFO] [stderr]     Checking regex-automata v0.4.7
[INFO] [stderr]     Checking log v0.4.22
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]     Checking clap_builder v4.5.10
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking is-terminal v0.4.12
[INFO] [stderr]     Checking time v0.1.45
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]     Checking addr2line v0.22.0
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking crc32fast v1.4.2
[INFO] [stderr]     Checking termcolor v1.4.1
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking cpufeatures v0.2.12
[INFO] [stderr]     Checking rustc-serialize v0.3.25
[INFO] [stderr]     Checking bitcoin_hashes v0.7.6
[INFO] [stderr]     Checking ryu v1.0.18
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]    Compiling serde_derive v1.0.204
[INFO] [stderr]     Checking sled v0.34.7
[INFO] [stderr]     Checking regex v1.10.5
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking clap v4.5.10
[INFO] [stderr]     Checking merkle-cbt v0.3.2
[INFO] [stderr]     Checking env_logger v0.10.2
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking bitcoincash-addr v0.5.2
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking blockchain-rust-demo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> src/block.rs:87:9
[INFO] [stdout]    |
[INFO] [stdout] 87 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/blockchain.rs:186:13
[INFO] [stdout]     |
[INFO] [stdout] 186 |         let mut b = Blockchain::new().unwrap();
[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: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 49.38s
[INFO] running `Command { std: "docker" "inspect" "8c254aa67fcbc6833bbb72f7342b71c0f2db907b499914f56a58f409a494e8af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c254aa67fcbc6833bbb72f7342b71c0f2db907b499914f56a58f409a494e8af", kill_on_drop: false }`
[INFO] [stdout] 8c254aa67fcbc6833bbb72f7342b71c0f2db907b499914f56a58f409a494e8af
[INFO] checking qaoo8/simple-blockchain-by-rust against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqaoo8%2Fsimple-blockchain-by-rust" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/qaoo8/simple-blockchain-by-rust on toolchain 6289438dbad80b1a0029c66dd3f6abf57c2c51be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/qaoo8/simple-blockchain-by-rust
[INFO] finished tweaking git repo https://github.com/qaoo8/simple-blockchain-by-rust
[INFO] tweaked toml for git repo https://github.com/qaoo8/simple-blockchain-by-rust written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/qaoo8/simple-blockchain-by-rust 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" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 793f89ac023f58fe5ed45e6bac14ead6be530993f5b4b0ca8c0f3aa0d50f83cd
[INFO] running `Command { std: "docker" "start" "-a" "793f89ac023f58fe5ed45e6bac14ead6be530993f5b4b0ca8c0f3aa0d50f83cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "793f89ac023f58fe5ed45e6bac14ead6be530993f5b4b0ca8c0f3aa0d50f83cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "793f89ac023f58fe5ed45e6bac14ead6be530993f5b4b0ca8c0f3aa0d50f83cd", kill_on_drop: false }`
[INFO] [stdout] 793f89ac023f58fe5ed45e6bac14ead6be530993f5b4b0ca8c0f3aa0d50f83cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 42c5a92fff0d3c677a762e644cf5c57d443bec328b940941460536af5b8a478f
[INFO] running `Command { std: "docker" "start" "-a" "42c5a92fff0d3c677a762e644cf5c57d443bec328b940941460536af5b8a478f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling autocfg v1.3.0
[INFO] [stderr]     Checking utf8parse v0.2.2
[INFO] [stderr]    Compiling serde v1.0.204
[INFO] [stderr]    Compiling cc v1.1.6
[INFO] [stderr]    Compiling crossbeam-utils v0.8.20
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]     Checking anstyle-parse v0.2.4
[INFO] [stderr]     Checking instant v0.1.13
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking colorchoice v1.0.1
[INFO] [stderr]     Checking anstyle-query v1.1.0
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]     Checking regex-syntax v0.8.4
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]    Compiling syn v2.0.72
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]     Checking anstyle v1.0.7
[INFO] [stderr]     Checking is_terminal_polyfill v1.70.0
[INFO] [stderr]     Checking gimli v0.29.0
[INFO] [stderr]     Checking anstream v0.6.14
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]     Checking miniz_oxide v0.7.4
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking regex-automata v0.4.7
[INFO] [stderr]    Compiling backtrace v0.3.73
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking object v0.36.2
[INFO] [stderr]     Checking rustc-demangle v0.1.24
[INFO] [stderr]     Checking clap_lex v0.7.1
[INFO] [stderr]     Checking log v0.4.22
[INFO] [stderr]    Compiling serde_json v1.0.120
[INFO] [stderr]     Checking clap_builder v4.5.10
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking is-terminal v0.4.12
[INFO] [stderr]     Checking time v0.1.45
[INFO] [stderr]     Checking crc32fast v1.4.2
[INFO] [stderr]     Checking addr2line v0.22.0
[INFO] [stderr]     Checking rustc-serialize v0.3.25
[INFO] [stderr]     Checking bitcoin_hashes v0.7.6
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]     Checking regex v1.10.5
[INFO] [stderr]    Compiling serde_derive v1.0.204
[INFO] [stderr]     Checking cpufeatures v0.2.12
[INFO] [stderr]     Checking ryu v1.0.18
[INFO] [stderr]     Checking termcolor v1.4.1
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking clap v4.5.10
[INFO] [stderr]     Checking sled v0.34.7
[INFO] [stderr]     Checking env_logger v0.10.2
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking merkle-cbt v0.3.2
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking bitcoincash-addr v0.5.2
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking blockchain-rust-demo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> src/block.rs:87:9
[INFO] [stdout]    |
[INFO] [stdout] 87 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/blockchain.rs:186:13
[INFO] [stdout]     |
[INFO] [stdout] 186 |         let mut b = Blockchain::new().unwrap();
[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: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 38.70s
[INFO] running `Command { std: "docker" "inspect" "42c5a92fff0d3c677a762e644cf5c57d443bec328b940941460536af5b8a478f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42c5a92fff0d3c677a762e644cf5c57d443bec328b940941460536af5b8a478f", kill_on_drop: false }`
[INFO] [stdout] 42c5a92fff0d3c677a762e644cf5c57d443bec328b940941460536af5b8a478f