[INFO] fetching crate finny 0.3.0...
[INFO] checking finny-0.3.0 against 895980e0290783bb09b1ccf1b11f14eb09b10430 for pr-160186
[INFO] extracting crate finny 0.3.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate finny 0.3.0
[INFO] finished tweaking crates.io crate finny 0.3.0
[INFO] tweaked toml for crates.io crate finny 0.3.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate finny 0.3.0 on toolchain 895980e0290783bb09b1ccf1b11f14eb09b10430
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+895980e0290783bb09b1ccf1b11f14eb09b10430" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate finny 0.3.0 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" "+895980e0290783bb09b1ccf1b11f14eb09b10430" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 42f83ce1131fbdbadafa59286578318ca4ed088b426a635f75433a50aa6ee7f9
[INFO] running `Command { std: "docker" "start" "42f83ce1131fbdbadafa59286578318ca4ed088b426a635f75433a50aa6ee7f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "42f83ce1131fbdbadafa59286578318ca4ed088b426a635f75433a50aa6ee7f9", 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" "42f83ce1131fbdbadafa59286578318ca4ed088b426a635f75433a50aa6ee7f9" "/opt/rustwide/cargo-home/bin/cargo" "+895980e0290783bb09b1ccf1b11f14eb09b10430" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "42f83ce1131fbdbadafa59286578318ca4ed088b426a635f75433a50aa6ee7f9", 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" "42f83ce1131fbdbadafa59286578318ca4ed088b426a635f75433a50aa6ee7f9" "/opt/rustwide/cargo-home/bin/cargo" "+895980e0290783bb09b1ccf1b11f14eb09b10430" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling hashbrown v0.9.1
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling arraydeque v0.4.5
[INFO] [stderr]    Compiling heapless v0.7.7
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling fixedbitset v0.2.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking tracing v0.1.44
[INFO] [stderr]    Compiling syn v3.0.6
[INFO] [stderr]     Checking lock_api v0.4.5
[INFO] [stderr]     Checking hash32 v0.2.1
[INFO] [stderr]     Checking spin v0.9.2
[INFO] [stderr]    Compiling indexmap v1.6.1
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]    Compiling derive_more v0.99.11
[INFO] [stderr]    Compiling finny_derive v0.3.0
[INFO] [stderr]    Compiling tokio-macros v2.7.2
[INFO] [stderr]     Checking tokio v1.53.1
[INFO] [stderr]     Checking finny v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `FsmBackendImpl`
[INFO] [stdout]  --> src/decl/fsm.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::{FsmBackendImpl, lib::*};
[INFO] [stdout]   |             ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `FsmEventQueue`
[INFO] [stdout]  --> src/fsm/events.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::{FsmBackend, FsmEventQueue, FsmEventQueueSender, lib::*};
[INFO] [stdout]   |                         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `FsmTimersNull`
[INFO] [stdout]  --> src/fsm/fsm_factory.rs:1:91
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::{FsmBackend, FsmBackendImpl, FsmEventQueue, FsmFrontend, FsmResult, FsmTimers, FsmTimersNull, Inspect};
[INFO] [stdout]   |                                                                                           ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `lib::*`
[INFO] [stdout]  --> src/fsm/transitions.rs:3:24
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::{FsmTimers, lib::*};
[INFO] [stdout]   |                        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]    --> src/lib.rs:155:33
[INFO] [stdout]     |
[INFO] [stdout] 155 |    pub use self::core::marker::{self, PhantomData};
[INFO] [stdout]     |                                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `FsmStates`
[INFO] [stdout]  --> src/fsm/inspect/mod.rs:4:51
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::{FsmBackend, FsmBackendImpl, FsmEvent, FsmStates, TimerFsmSettings};
[INFO] [stdout]   |                                                   ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fsm`
[INFO] [stdout]   --> src/inspect/null.rs:47:40
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn event_done<F: FsmBackend>(self, fsm: &FsmBackendImpl<F>) {
[INFO] [stdout]    |                                        ^^^ help: if this is intentional, prefix it with an underscore: `_fsm`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> src/inspect/null.rs:51:27
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn on_error<E>(&self, msg: &str, error: &E) where E: core::fmt::Debug {
[INFO] [stdout]    |                           ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `error`
[INFO] [stdout]   --> src/inspect/null.rs:51:38
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn on_error<E>(&self, msg: &str, error: &E) where E: core::fmt::Debug {
[INFO] [stdout]    |                                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> src/inspect/null.rs:55:20
[INFO] [stdout]    |
[INFO] [stdout] 55 |     fn info(&self, msg: &str) {
[INFO] [stdout]    |                    ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `event`
[INFO] [stdout]   --> src/inspect/null.rs:61:48
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn on_event<S: Any + Debug + Clone>(&self, event: &InspectFsmEvent<S>) {
[INFO] [stdout]    |                                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_event`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fsm`
[INFO] [stdout]   --> src/inspect/events.rs:57:40
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn event_done<F: FsmBackend>(self, fsm: &FsmBackendImpl<F>) {
[INFO] [stdout]    |                                        ^^^ help: if this is intentional, prefix it with an underscore: `_fsm`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> src/inspect/events.rs:61:27
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn on_error<E>(&self, msg: &str, error: &E) where E: core::fmt::Debug {
[INFO] [stdout]    |                           ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `error`
[INFO] [stdout]   --> src/inspect/events.rs:61:38
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn on_error<E>(&self, msg: &str, error: &E) where E: core::fmt::Debug {
[INFO] [stdout]    |                                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> src/inspect/events.rs:65:20
[INFO] [stdout]    |
[INFO] [stdout] 65 |     fn info(&self, msg: &str) {
[INFO] [stdout]    |                    ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/timers/core.rs:41:17
[INFO] [stdout]    |
[INFO] [stdout] 41 |             let mut timer = self.timers.get_timer_storage_mut(&id);
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/timers/core.rs:84:17
[INFO] [stdout]    |
[INFO] [stdout] 84 |             let mut timer = self.timers.get_timer_storage_mut(&id);
[INFO] [stdout]    |                 ----^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StateA` is never constructed
[INFO] [stdout]  --> src/fsm/tests_fsm.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct StateA;
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `EventA` is never constructed
[INFO] [stdout]  --> src/fsm/tests_fsm.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct EventA { pub n: usize }
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TestFsm` is never constructed
[INFO] [stdout]   --> src/fsm/tests_fsm.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct TestFsm;
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `States` is never constructed
[INFO] [stdout]   --> src/fsm/tests_fsm.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct States {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `StateKind` is never used
[INFO] [stdout]   --> src/fsm/tests_fsm.rs:20:10
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub enum StateKind {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Events` is never used
[INFO] [stdout]   --> src/fsm/tests_fsm.rs:30:10
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub enum Events {
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `FsmBackendTimers` is never used
[INFO] [stdout]   --> src/fsm/tests_fsm.rs:40:10
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub enum FsmBackendTimers {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `FsmBackendImpl`
[INFO] [stdout]  --> src/decl/fsm.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::{FsmBackendImpl, lib::*};
[INFO] [stdout]   |             ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `FsmEventQueue`
[INFO] [stdout]  --> src/fsm/events.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::{FsmBackend, FsmEventQueue, FsmEventQueueSender, lib::*};
[INFO] [stdout]   |                         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `FsmTimersNull`
[INFO] [stdout]  --> src/fsm/fsm_factory.rs:1:91
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::{FsmBackend, FsmBackendImpl, FsmEventQueue, FsmFrontend, FsmResult, FsmTimers, FsmTimersNull, Inspect};
[INFO] [stdout]   |                                                                                           ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `lib::*`
[INFO] [stdout]  --> src/fsm/transitions.rs:3:24
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::{FsmTimers, lib::*};
[INFO] [stdout]   |                        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `FsmStates`
[INFO] [stdout]  --> src/fsm/inspect/mod.rs:4:51
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::{FsmBackend, FsmBackendImpl, FsmEvent, FsmStates, TimerFsmSettings};
[INFO] [stdout]   |                                                   ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]    --> src/lib.rs:155:33
[INFO] [stdout]     |
[INFO] [stdout] 155 |    pub use self::core::marker::{self, PhantomData};
[INFO] [stdout]     |                                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `IndexMut` and `Index`
[INFO] [stdout]    --> src/lib.rs:156:47
[INFO] [stdout]     |
[INFO] [stdout] 156 |    pub use self::core::ops::{Deref, DerefMut, Index, IndexMut};
[INFO] [stdout]     |                                               ^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::core::slice::SliceIndex`
[INFO] [stdout]    --> src/lib.rs:161:12
[INFO] [stdout]     |
[INFO] [stdout] 161 |    pub use self::core::slice::SliceIndex;
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fsm`
[INFO] [stdout]   --> src/inspect/null.rs:47:40
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn event_done<F: FsmBackend>(self, fsm: &FsmBackendImpl<F>) {
[INFO] [stdout]    |                                        ^^^ help: if this is intentional, prefix it with an underscore: `_fsm`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> src/inspect/null.rs:51:27
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn on_error<E>(&self, msg: &str, error: &E) where E: core::fmt::Debug {
[INFO] [stdout]    |                           ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `error`
[INFO] [stdout]   --> src/inspect/null.rs:51:38
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn on_error<E>(&self, msg: &str, error: &E) where E: core::fmt::Debug {
[INFO] [stdout]    |                                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> src/inspect/null.rs:55:20
[INFO] [stdout]    |
[INFO] [stdout] 55 |     fn info(&self, msg: &str) {
[INFO] [stdout]    |                    ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `event`
[INFO] [stdout]   --> src/inspect/null.rs:61:48
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn on_event<S: Any + Debug + Clone>(&self, event: &InspectFsmEvent<S>) {
[INFO] [stdout]    |                                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_event`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fsm`
[INFO] [stdout]   --> src/inspect/events.rs:57:40
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn event_done<F: FsmBackend>(self, fsm: &FsmBackendImpl<F>) {
[INFO] [stdout]    |                                        ^^^ help: if this is intentional, prefix it with an underscore: `_fsm`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> src/inspect/events.rs:61:27
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn on_error<E>(&self, msg: &str, error: &E) where E: core::fmt::Debug {
[INFO] [stdout]    |                           ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `error`
[INFO] [stdout]   --> src/inspect/events.rs:61:38
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn on_error<E>(&self, msg: &str, error: &E) where E: core::fmt::Debug {
[INFO] [stdout]    |                                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> src/inspect/events.rs:65:20
[INFO] [stdout]    |
[INFO] [stdout] 65 |     fn info(&self, msg: &str) {
[INFO] [stdout]    |                    ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/timers/core.rs:41:17
[INFO] [stdout]    |
[INFO] [stdout] 41 |             let mut timer = self.timers.get_timer_storage_mut(&id);
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/timers/core.rs:84:17
[INFO] [stdout]    |
[INFO] [stdout] 84 |             let mut timer = self.timers.get_timer_storage_mut(&id);
[INFO] [stdout]    |                 ----^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `state_a` is never read
[INFO] [stdout]   --> src/fsm/tests_fsm.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct States {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 16 |     state_a: StateA
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `StateA` is never constructed
[INFO] [stdout]   --> src/fsm/tests_fsm.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub enum StateKind {
[INFO] [stdout]    |          --------- variant in this enum
[INFO] [stdout] 21 |     StateA
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `StateKind` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.91s
[INFO] running `Command { std: "docker" "inspect" "42f83ce1131fbdbadafa59286578318ca4ed088b426a635f75433a50aa6ee7f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42f83ce1131fbdbadafa59286578318ca4ed088b426a635f75433a50aa6ee7f9", kill_on_drop: false }`
[INFO] [stdout] 42f83ce1131fbdbadafa59286578318ca4ed088b426a635f75433a50aa6ee7f9
