[INFO] cloning repository https://github.com/yonatan-reicher/fuzzer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yonatan-reicher/fuzzer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyonatan-reicher%2Ffuzzer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyonatan-reicher%2Ffuzzer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0fbfd5d7377f34db840239ea82633dda02210f7c
[INFO] checking yonatan-reicher/fuzzer against master#82310651b93a594a3fd69015e1562186a080d94c for pr-145770
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyonatan-reicher%2Ffuzzer" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/yonatan-reicher/fuzzer
[INFO] finished tweaking git repo https://github.com/yonatan-reicher/fuzzer
[INFO] tweaked toml for git repo https://github.com/yonatan-reicher/fuzzer written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/yonatan-reicher/fuzzer on toolchain 82310651b93a594a3fd69015e1562186a080d94c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/yonatan-reicher/fuzzer 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" "+82310651b93a594a3fd69015e1562186a080d94c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6237ec81e3d8de66d691dc8a40d39be0b3de5ad1802e4c2b9d7256652f2fd07c
[INFO] running `Command { std: "docker" "start" "-a" "6237ec81e3d8de66d691dc8a40d39be0b3de5ad1802e4c2b9d7256652f2fd07c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6237ec81e3d8de66d691dc8a40d39be0b3de5ad1802e4c2b9d7256652f2fd07c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6237ec81e3d8de66d691dc8a40d39be0b3de5ad1802e4c2b9d7256652f2fd07c", kill_on_drop: false }`
[INFO] [stdout] 6237ec81e3d8de66d691dc8a40d39be0b3de5ad1802e4c2b9d7256652f2fd07c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2a57a5a2ff18b8f2bf56225c0229bda41741196387928174958725ee3b2acc59
[INFO] running `Command { std: "docker" "start" "-a" "2a57a5a2ff18b8f2bf56225c0229bda41741196387928174958725ee3b2acc59", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling unicode-ident v1.0.14
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking regex-syntax v0.8.5
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking utf8parse v0.2.2
[INFO] [stderr]     Checking anstyle v1.0.10
[INFO] [stderr]     Checking anstyle-parse v0.2.6
[INFO] [stderr]     Checking is_terminal_polyfill v1.70.1
[INFO] [stderr]     Checking anstyle-query v1.1.2
[INFO] [stderr]     Checking colorchoice v1.0.3
[INFO] [stderr]     Checking log v0.4.25
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking once_cell v1.20.2
[INFO] [stderr]     Checking anstream v0.6.18
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling syn v2.0.96
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking shared_child v1.0.1
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]     Checking regex v1.11.1
[INFO] [stderr]     Checking env_filter v0.1.3
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking env_logger v0.11.6
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking fuzzer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `empty` is never used
[INFO] [stdout]   --> src/random_strings.rs:91:14
[INFO] [stdout]    |
[INFO] [stdout] 91 | pub const fn empty() -> ByteGenerator {
[INFO] [stdout]    |              ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `FuzzingMutation` is never used
[INFO] [stdout]  --> src/mutations.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub trait FuzzingMutation<T> {
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AddRandomChar` is never constructed
[INFO] [stdout]   --> src/mutations.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct AddRandomChar;
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RemoveRandomChar` is never constructed
[INFO] [stdout]   --> src/mutations.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct RemoveRandomChar;
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `InsertRandomChar` is never constructed
[INFO] [stdout]   --> src/mutations.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct InsertRandomChar;
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MakeUppercase` is never constructed
[INFO] [stdout]   --> src/mutations.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub struct MakeUppercase;
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MakeLowercase` is never constructed
[INFO] [stdout]   --> src/mutations.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub struct MakeLowercase;
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ReverseString` is never constructed
[INFO] [stdout]   --> src/mutations.rs:54:12
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub struct ReverseString;
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ShuffleString` is never constructed
[INFO] [stdout]   --> src/mutations.rs:62:12
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub struct ShuffleString;
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DuplicateChars` is never constructed
[INFO] [stdout]   --> src/mutations.rs:73:12
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub struct DuplicateChars;
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RemoveVowels` is never constructed
[INFO] [stdout]   --> src/mutations.rs:87:12
[INFO] [stdout]    |
[INFO] [stdout] 87 | pub struct RemoveVowels;
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `InsertRandomSubstring` is never constructed
[INFO] [stdout]   --> src/mutations.rs:95:12
[INFO] [stdout]    |
[INFO] [stdout] 95 | pub struct InsertRandomSubstring;
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BitFlip` is never constructed
[INFO] [stdout]    --> src/mutations.rs:107:12
[INFO] [stdout]     |
[INFO] [stdout] 107 | pub struct BitFlip;
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SwapAdjacent` is never constructed
[INFO] [stdout]    --> src/mutations.rs:120:12
[INFO] [stdout]     |
[INFO] [stdout] 120 | pub struct SwapAdjacent;
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `ALL_MUTATIONS` is never used
[INFO] [stdout]    --> src/mutations.rs:135:12
[INFO] [stdout]     |
[INFO] [stdout] 135 | pub static ALL_MUTATIONS: Lazy<Vec<Box<dyn FuzzingMutation<String> + Sync + Send>>> =
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]   --> src/random_strings.rs:30:42
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let ret_non_negative: i64 = unsafe { std::mem::transmute(ret_non_negative) };
[INFO] [stdout]    |                                          -------------------^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                                          |
[INFO] [stdout]    |                                          help: replace this with: `u64::cast_signed`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StoppableLoop` is never constructed
[INFO] [stdout]  --> src/stoppable_loop.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct StoppableLoop<A: LoopAction> {
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `State` is never used
[INFO] [stdout]   --> src/stoppable_loop.rs:12:6
[INFO] [stdout]    |
[INFO] [stdout] 12 | enum State<Stoppable> {
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `LoopAction` is never used
[INFO] [stdout]   --> src/stoppable_loop.rs:19:11
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub trait LoopAction {
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_stopped` is never used
[INFO] [stdout]   --> src/stoppable_loop.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | impl<S> State<S> {
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] 32 |     fn is_stopped(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `get_stop`, `start_action`, and `run` are never used
[INFO] [stdout]   --> src/stoppable_loop.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 37 | impl<A: LoopAction> StoppableLoop<A> {
[INFO] [stdout]    | ------------------------------------ associated items in this implementation
[INFO] [stdout] 38 |     pub fn new(action: A) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 47 |     pub fn get_stop(&self) -> impl FnOnce() + Send + 'static {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |     fn start_action(&mut self) -> Option<A::Wait> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 70 |     pub fn run(&mut self) -> Option<A::Output> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `empty` is never used
[INFO] [stdout]   --> src/random_strings.rs:91:14
[INFO] [stdout]    |
[INFO] [stdout] 91 | pub const fn empty() -> ByteGenerator {
[INFO] [stdout]    |              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_raised` is never used
[INFO] [stdout]   --> src/flag/waitable_flag.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl WaitableFlag {
[INFO] [stdout]    | ----------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 21 |     pub fn is_raised(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `until_raised` is never used
[INFO] [stdout]   --> src/flag/waitable_flag.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | impl Wait {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] 34 |     pub fn until_raised(&self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `FuzzingMutation` is never used
[INFO] [stdout]  --> src/mutations.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub trait FuzzingMutation<T> {
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AddRandomChar` is never constructed
[INFO] [stdout]   --> src/mutations.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct AddRandomChar;
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RemoveRandomChar` is never constructed
[INFO] [stdout]   --> src/mutations.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct RemoveRandomChar;
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `InsertRandomChar` is never constructed
[INFO] [stdout]   --> src/mutations.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct InsertRandomChar;
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MakeUppercase` is never constructed
[INFO] [stdout]   --> src/mutations.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub struct MakeUppercase;
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MakeLowercase` is never constructed
[INFO] [stdout]   --> src/mutations.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub struct MakeLowercase;
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ReverseString` is never constructed
[INFO] [stdout]   --> src/mutations.rs:54:12
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub struct ReverseString;
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ShuffleString` is never constructed
[INFO] [stdout]   --> src/mutations.rs:62:12
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub struct ShuffleString;
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DuplicateChars` is never constructed
[INFO] [stdout]   --> src/mutations.rs:73:12
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub struct DuplicateChars;
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RemoveVowels` is never constructed
[INFO] [stdout]   --> src/mutations.rs:87:12
[INFO] [stdout]    |
[INFO] [stdout] 87 | pub struct RemoveVowels;
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `InsertRandomSubstring` is never constructed
[INFO] [stdout]   --> src/mutations.rs:95:12
[INFO] [stdout]    |
[INFO] [stdout] 95 | pub struct InsertRandomSubstring;
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BitFlip` is never constructed
[INFO] [stdout]    --> src/mutations.rs:107:12
[INFO] [stdout]     |
[INFO] [stdout] 107 | pub struct BitFlip;
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SwapAdjacent` is never constructed
[INFO] [stdout]    --> src/mutations.rs:120:12
[INFO] [stdout]     |
[INFO] [stdout] 120 | pub struct SwapAdjacent;
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `ALL_MUTATIONS` is never used
[INFO] [stdout]    --> src/mutations.rs:135:12
[INFO] [stdout]     |
[INFO] [stdout] 135 | pub static ALL_MUTATIONS: Lazy<Vec<Box<dyn FuzzingMutation<String> + Sync + Send>>> =
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]   --> src/random_strings.rs:30:42
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let ret_non_negative: i64 = unsafe { std::mem::transmute(ret_non_negative) };
[INFO] [stdout]    |                                          -------------------^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                                          |
[INFO] [stdout]    |                                          help: replace this with: `u64::cast_signed`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `time::Duration`
[INFO] [stdout]  --> src/main.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::{env, time::Duration};
[INFO] [stdout]   |                ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `time::Duration`
[INFO] [stdout]  --> src/main.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::{env, time::Duration};
[INFO] [stdout]   |                ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.58s
[INFO] running `Command { std: "docker" "inspect" "2a57a5a2ff18b8f2bf56225c0229bda41741196387928174958725ee3b2acc59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a57a5a2ff18b8f2bf56225c0229bda41741196387928174958725ee3b2acc59", kill_on_drop: false }`
[INFO] [stdout] 2a57a5a2ff18b8f2bf56225c0229bda41741196387928174958725ee3b2acc59
