[INFO] cloning repository https://github.com/henke443/fast-list
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/henke443/fast-list" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhenke443%2Ffast-list", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhenke443%2Ffast-list'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 73eda0cf72dbcacc63544be82e2cfa2b820b9f33
[INFO] testing henke443/fast-list against 1.98.0-beta.1 for beta-1.98-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhenke443%2Ffast-list" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/henke443/fast-list
[INFO] finished tweaking git repo https://github.com/henke443/fast-list
[INFO] tweaked toml for git repo https://github.com/henke443/fast-list written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/henke443/fast-list on toolchain 1.98.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.98.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/henke443/fast-list 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" "+1.98.0-beta.1" "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-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:3d5ced03c013a94a2f102a4510f48a6e9184255caf5fd8244f58017bde7f5210" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 73adcbdfa26eeaf3873b55cbdb1fc27b7127960b84fd786856722cf6b7083d43
[INFO] running `Command { std: "docker" "start" "73adcbdfa26eeaf3873b55cbdb1fc27b7127960b84fd786856722cf6b7083d43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "73adcbdfa26eeaf3873b55cbdb1fc27b7127960b84fd786856722cf6b7083d43", 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" "73adcbdfa26eeaf3873b55cbdb1fc27b7127960b84fd786856722cf6b7083d43" "/opt/rustwide/cargo-home/bin/cargo" "+1.98.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "73adcbdfa26eeaf3873b55cbdb1fc27b7127960b84fd786856722cf6b7083d43", 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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "73adcbdfa26eeaf3873b55cbdb1fc27b7127960b84fd786856722cf6b7083d43" "/opt/rustwide/cargo-home/bin/cargo" "+1.98.0-beta.1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.81
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling once_cell v1.19.0
[INFO] [stderr]    Compiling thiserror v1.0.58
[INFO] [stderr]    Compiling zerocopy v0.7.32
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling allocator-api2 v0.2.18
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]    Compiling slotmap v1.0.7
[INFO] [stderr]    Compiling hashbrown v0.14.3
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.60
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]    Compiling fast-list v0.1.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `LinkedListItem`
[INFO] [stdout]  --> src/walker.rs:1:55
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::linked_list::{LinkedList, LinkedListIndex, LinkedListItem};
[INFO] [stdout]   |                                                       ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/linked_list.rs:402:13
[INFO] [stdout]     |
[INFO] [stdout] 402 |         let mut current = index;
[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/linked_list.rs:511:29
[INFO] [stdout]     |
[INFO] [stdout] 511 |     pub fn retain<F>(&self, mut f: F) -> Self
[INFO] [stdout]     |                             ----^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `list`
[INFO] [stdout]   --> src/walker.rs:82:19
[INFO] [stdout]    |
[INFO] [stdout] 82 |     pub fn new<T>(list: &LinkedList<T>, start: LinkedListIndex, reverse: bool) -> Self {
[INFO] [stdout]    |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_list`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Walker` is never used
[INFO] [stdout]   --> src/walker.rs:10:11
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub trait Walker<Context> {
[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 `WalkerIter` is never constructed
[INFO] [stdout]   --> src/walker.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub struct WalkerIter<W, C> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `context`, `inner_ref`, and `inner_mut` are never used
[INFO] [stdout]   --> src/walker.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 35 | / impl<W, C> WalkerIter<W, C>
[INFO] [stdout] 36 | | where
[INFO] [stdout] 37 | |     W: Walker<C>,
[INFO] [stdout] 38 | |     C: Clone,
[INFO] [stdout]    | |_____________- methods in this implementation
[INFO] [stdout] 39 |   {
[INFO] [stdout] 40 |       pub fn context(&self) -> C {
[INFO] [stdout]    |              ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |       pub fn inner_ref(&self) -> &W {
[INFO] [stdout]    |              ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |       pub fn inner_mut(&mut self) -> &mut W {
[INFO] [stdout]    |              ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LinkedListWalker` is never constructed
[INFO] [stdout]   --> src/walker.rs:74:12
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub struct LinkedListWalker {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/walker.rs:82:12
[INFO] [stdout]    |
[INFO] [stdout] 81 | impl LinkedListWalker {
[INFO] [stdout]    | --------------------- associated function in this implementation
[INFO] [stdout] 82 |     pub fn new<T>(list: &LinkedList<T>, start: LinkedListIndex, reverse: bool) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.32s
[INFO] running `Command { std: "docker" "inspect" "73adcbdfa26eeaf3873b55cbdb1fc27b7127960b84fd786856722cf6b7083d43", 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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "73adcbdfa26eeaf3873b55cbdb1fc27b7127960b84fd786856722cf6b7083d43" "/opt/rustwide/cargo-home/bin/cargo" "+1.98.0-beta.1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]    Compiling autocfg v1.2.0
[INFO] [stderr]    Compiling serde v1.0.198
[INFO] [stderr]    Compiling either v1.11.0
[INFO] [stderr]    Compiling serde_json v1.0.116
[INFO] [stderr]    Compiling serde_derive v1.0.198
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]    Compiling once_cell v1.19.0
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]    Compiling half v2.4.1
[INFO] [stderr]    Compiling ryu v1.0.17
[INFO] [stderr]    Compiling itoa v1.0.11
[INFO] [stderr]    Compiling ciborium-io v0.2.2
[INFO] [stderr]    Compiling regex-syntax v0.8.3
[INFO] [stderr]    Compiling plotters-backend v0.3.5
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling hashbrown v0.6.3
[INFO] [stderr]    Compiling clap_lex v0.7.0
[INFO] [stderr]    Compiling anstyle v1.0.6
[INFO] [stderr]    Compiling plotters-svg v0.3.5
[INFO] [stderr]    Compiling ciborium-ll v0.2.2
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling clap_builder v4.5.2
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling crossbeam-deque v0.8.5
[INFO] [stderr]    Compiling cast v0.3.0
[INFO] [stderr]    Compiling ahash v0.2.19
[INFO] [stderr]    Compiling plotters v0.3.5
[INFO] [stderr]    Compiling is-terminal v0.4.12
[INFO] [stderr]    Compiling hashbrown v0.14.3
[INFO] [stderr]    Compiling rayon v1.10.0
[INFO] [stderr]    Compiling regex-automata v0.4.6
[INFO] [stderr]    Compiling walkdir v2.5.0
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling criterion-plot v0.5.0
[INFO] [stderr]    Compiling crossbeam-queue v0.3.11
[INFO] [stderr]    Compiling crossbeam-channel v0.5.12
[INFO] [stderr]    Compiling clap v4.5.4
[INFO] [stderr]    Compiling rand_isaac v0.2.0
[INFO] [stderr]    Compiling oorandom v11.1.3
[INFO] [stderr]    Compiling anes v0.1.6
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling crossbeam v0.8.4
[INFO] [stderr]    Compiling fast-list v0.1.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `LinkedListItem`
[INFO] [stdout]  --> src/walker.rs:1:55
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::linked_list::{LinkedList, LinkedListIndex, LinkedListItem};
[INFO] [stdout]   |                                                       ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/linked_list.rs:402:13
[INFO] [stdout]     |
[INFO] [stdout] 402 |         let mut current = index;
[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/linked_list.rs:511:29
[INFO] [stdout]     |
[INFO] [stdout] 511 |     pub fn retain<F>(&self, mut f: F) -> Self
[INFO] [stdout]     |                             ----^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `list`
[INFO] [stdout]   --> src/walker.rs:82:19
[INFO] [stdout]    |
[INFO] [stdout] 82 |     pub fn new<T>(list: &LinkedList<T>, start: LinkedListIndex, reverse: bool) -> Self {
[INFO] [stdout]    |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_list`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Walker` is never used
[INFO] [stdout]   --> src/walker.rs:10:11
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub trait Walker<Context> {
[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 `WalkerIter` is never constructed
[INFO] [stdout]   --> src/walker.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub struct WalkerIter<W, C> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `context`, `inner_ref`, and `inner_mut` are never used
[INFO] [stdout]   --> src/walker.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 35 | / impl<W, C> WalkerIter<W, C>
[INFO] [stdout] 36 | | where
[INFO] [stdout] 37 | |     W: Walker<C>,
[INFO] [stdout] 38 | |     C: Clone,
[INFO] [stdout]    | |_____________- methods in this implementation
[INFO] [stdout] 39 |   {
[INFO] [stdout] 40 |       pub fn context(&self) -> C {
[INFO] [stdout]    |              ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |       pub fn inner_ref(&self) -> &W {
[INFO] [stdout]    |              ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |       pub fn inner_mut(&mut self) -> &mut W {
[INFO] [stdout]    |              ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LinkedListWalker` is never constructed
[INFO] [stdout]   --> src/walker.rs:74:12
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub struct LinkedListWalker {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/walker.rs:82:12
[INFO] [stdout]    |
[INFO] [stdout] 81 | impl LinkedListWalker {
[INFO] [stdout]    | --------------------- associated function in this implementation
[INFO] [stdout] 82 |     pub fn new<T>(list: &LinkedList<T>, start: LinkedListIndex, reverse: bool) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling graphlib v0.6.3
[INFO] [stderr]    Compiling regex v1.10.4
[INFO] [stderr]    Compiling ciborium v0.2.2
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling criterion v0.5.1
[INFO] [stdout] warning: unused imports: `AtomicI32` and `Ordering`
[INFO] [stdout]  --> tests/test_linked_list.rs:3:18
[INFO] [stdout]   |
[INFO] [stdout] 3 |         atomic::{AtomicI32, Ordering},
[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 variable: `c`
[INFO] [stdout]    --> tests/test_linked_list.rs:146:16
[INFO] [stdout]     |
[INFO] [stdout] 146 |     let (a, b, c, d) = {
[INFO] [stdout]     |                ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `LinkedListItem`
[INFO] [stdout]  --> src/walker.rs:1:55
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::linked_list::{LinkedList, LinkedListIndex, LinkedListItem};
[INFO] [stdout]   |                                                       ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/linked_list.rs:402:13
[INFO] [stdout]     |
[INFO] [stdout] 402 |         let mut current = index;
[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/linked_list.rs:511:29
[INFO] [stdout]     |
[INFO] [stdout] 511 |     pub fn retain<F>(&self, mut f: F) -> Self
[INFO] [stdout]     |                             ----^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `list`
[INFO] [stdout]   --> src/walker.rs:82:19
[INFO] [stdout]    |
[INFO] [stdout] 82 |     pub fn new<T>(list: &LinkedList<T>, start: LinkedListIndex, reverse: bool) -> Self {
[INFO] [stdout]    |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_list`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `iter` is never used
[INFO] [stdout]   --> src/walker.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub trait Walker<Context> {
[INFO] [stdout]    |           ------ method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 16 |     fn iter(self, context: Context) -> WalkerIter<Self, Context>
[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 `WalkerIter` is never constructed
[INFO] [stdout]   --> src/walker.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub struct WalkerIter<W, C> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `context`, `inner_ref`, and `inner_mut` are never used
[INFO] [stdout]   --> src/walker.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 35 | / impl<W, C> WalkerIter<W, C>
[INFO] [stdout] 36 | | where
[INFO] [stdout] 37 | |     W: Walker<C>,
[INFO] [stdout] 38 | |     C: Clone,
[INFO] [stdout]    | |_____________- methods in this implementation
[INFO] [stdout] 39 |   {
[INFO] [stdout] 40 |       pub fn context(&self) -> C {
[INFO] [stdout]    |              ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |       pub fn inner_ref(&self) -> &W {
[INFO] [stdout]    |              ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |       pub fn inner_mut(&mut self) -> &mut W {
[INFO] [stdout]    |              ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 46.44s
[INFO] running `Command { std: "docker" "inspect" "73adcbdfa26eeaf3873b55cbdb1fc27b7127960b84fd786856722cf6b7083d43", 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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "73adcbdfa26eeaf3873b55cbdb1fc27b7127960b84fd786856722cf6b7083d43" "/opt/rustwide/cargo-home/bin/cargo" "+1.98.0-beta.1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `LinkedListItem`
[INFO] [stderr]  --> src/walker.rs:1:55
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::linked_list::{LinkedList, LinkedListIndex, LinkedListItem};
[INFO] [stderr]   |                                                       ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/linked_list.rs:402:13
[INFO] [stderr]     |
[INFO] [stderr] 402 |         let mut current = index;
[INFO] [stderr]     |             ----^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/linked_list.rs:511:29
[INFO] [stderr]     |
[INFO] [stderr] 511 |     pub fn retain<F>(&self, mut f: F) -> Self
[INFO] [stderr]     |                             ----^
[INFO] [stderr]     |                             |
[INFO] [stderr]     |                             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `list`
[INFO] [stderr]   --> src/walker.rs:82:19
[INFO] [stderr]    |
[INFO] [stderr] 82 |     pub fn new<T>(list: &LinkedList<T>, start: LinkedListIndex, reverse: bool) -> Self {
[INFO] [stderr]    |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_list`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait `Walker` is never used
[INFO] [stderr]   --> src/walker.rs:10:11
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub trait Walker<Context> {
[INFO] [stderr]    |           ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `WalkerIter` is never constructed
[INFO] [stderr]   --> src/walker.rs:30:12
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub struct WalkerIter<W, C> {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: methods `context`, `inner_ref`, and `inner_mut` are never used
[INFO] [stderr]   --> src/walker.rs:40:12
[INFO] [stderr]    |
[INFO] [stderr] 35 | / impl<W, C> WalkerIter<W, C>
[INFO] [stderr] 36 | | where
[INFO] [stderr] 37 | |     W: Walker<C>,
[INFO] [stderr] 38 | |     C: Clone,
[INFO] [stderr]    | |_____________- methods in this implementation
[INFO] [stderr] 39 |   {
[INFO] [stderr] 40 |       pub fn context(&self) -> C {
[INFO] [stderr]    |              ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 44 |       pub fn inner_ref(&self) -> &W {
[INFO] [stderr]    |              ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 48 |       pub fn inner_mut(&mut self) -> &mut W {
[INFO] [stderr]    |              ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `LinkedListWalker` is never constructed
[INFO] [stderr]   --> src/walker.rs:74:12
[INFO] [stderr]    |
[INFO] [stderr] 74 | pub struct LinkedListWalker {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> src/walker.rs:82:12
[INFO] [stderr]    |
[INFO] [stderr] 81 | impl LinkedListWalker {
[INFO] [stderr]    | --------------------- associated function in this implementation
[INFO] [stderr] 82 |     pub fn new<T>(list: &LinkedList<T>, start: LinkedListIndex, reverse: bool) -> Self {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `fast-list` (lib) generated 9 warnings (run `cargo fix --lib -p fast-list` to apply 4 suggestions)
[INFO] [stderr] warning: unused imports: `AtomicI32` and `Ordering`
[INFO] [stderr]  --> tests/test_linked_list.rs:3:18
[INFO] [stderr]   |
[INFO] [stderr] 3 |         atomic::{AtomicI32, Ordering},
[INFO] [stderr]   |                  ^^^^^^^^^  ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]    --> tests/test_linked_list.rs:146:16
[INFO] [stderr]     |
[INFO] [stderr] 146 |     let (a, b, c, d) = {
[INFO] [stderr]     |                ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `iter` is never used
[INFO] [stderr]   --> src/walker.rs:16:8
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub trait Walker<Context> {
[INFO] [stderr]    |           ------ method in this trait
[INFO] [stderr] ...
[INFO] [stderr] 16 |     fn iter(self, context: Context) -> WalkerIter<Self, Context>
[INFO] [stderr]    |        ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `fast-list` (test "test_linked_list") generated 2 warnings (run `cargo fix --test "test_linked_list" -p fast-list` to apply 2 suggestions)
[INFO] [stderr] warning: `fast-list` (lib test) generated 7 warnings (6 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.18s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/fast_list-0c2b977f9e3ed4b7)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test walker::tests::test_list_walker ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/test_linked_list.rs (/opt/rustwide/target/debug/deps/test_linked_list-c702df4633f1b2ff)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test test_fn_insert_after_fn_insert_before ... ok
[INFO] [stdout] test test_associated_data ... ok
[INFO] [stdout] test test_iter ... ok
[INFO] [stdout] test test_popback ... ok
[INFO] [stdout] test test_fn_push_back_fn_next_of_fn_prev_of ... ok
[INFO] [stdout] test test_split_off ... ok
[INFO] [stderr]    Doc-tests fast_list
[INFO] [stdout] test test_multithreading ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/lib.rs - (line 108) ... ignored
[INFO] [stdout] test src/lib.rs - (line 116) ... ignored
[INFO] [stdout] test src/lib.rs - (line 95) ... ignored
[INFO] [stdout] test src/lib.rs - (line 30) ... ok
[INFO] [stdout] test src/linked_list.rs - linked_list::LinkedList<T>::iter (line 315) ... ok
[INFO] [stdout] test src/lib.rs - (line 53) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 3 ignored; 0 measured; 0 filtered out; finished in 0.55s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "73adcbdfa26eeaf3873b55cbdb1fc27b7127960b84fd786856722cf6b7083d43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73adcbdfa26eeaf3873b55cbdb1fc27b7127960b84fd786856722cf6b7083d43", kill_on_drop: false }`
[INFO] [stdout] 73adcbdfa26eeaf3873b55cbdb1fc27b7127960b84fd786856722cf6b7083d43
