[INFO] cloning repository https://github.com/u1roh/graph_in_rust_with_unsafe
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/u1roh/graph_in_rust_with_unsafe" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fu1roh%2Fgraph_in_rust_with_unsafe", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fu1roh%2Fgraph_in_rust_with_unsafe'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 05589b16939a5f01e51d2bdd5167cc70fc0fe4f2
[INFO] testing u1roh/graph_in_rust_with_unsafe against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fu1roh%2Fgraph_in_rust_with_unsafe" "/workspace/builds/worker-48/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-48/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/u1roh/graph_in_rust_with_unsafe on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/u1roh/graph_in_rust_with_unsafe
[INFO] finished tweaking git repo https://github.com/u1roh/graph_in_rust_with_unsafe
[INFO] tweaked toml for git repo https://github.com/u1roh/graph_in_rust_with_unsafe written to /workspace/builds/worker-48/source/Cargo.toml
[INFO] crate git repo https://github.com/u1roh/graph_in_rust_with_unsafe already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c18f86a58b71f3ce063f16506aedd8891ce39524e01e04b778ba9794f0759eea
[INFO] running `Command { std: "docker" "start" "-a" "c18f86a58b71f3ce063f16506aedd8891ce39524e01e04b778ba9794f0759eea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c18f86a58b71f3ce063f16506aedd8891ce39524e01e04b778ba9794f0759eea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c18f86a58b71f3ce063f16506aedd8891ce39524e01e04b778ba9794f0759eea", kill_on_drop: false }`
[INFO] [stdout] c18f86a58b71f3ce063f16506aedd8891ce39524e01e04b778ba9794f0759eea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7496a65344e7137ec640063c7aa4145394dc6ad3ec4b309626897e94facca704
[INFO] running `Command { std: "docker" "start" "-a" "7496a65344e7137ec640063c7aa4145394dc6ad3ec4b309626897e94facca704", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling typed-arena v2.0.1
[INFO] [stderr]    Compiling mepoo v0.1.0 (https://github.com/u1roh/mepoo.git#dd29e280)
[INFO] [stderr]    Compiling c2-chacha v0.2.3
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling graph_in_rust_with_unsafe v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/test07_nodes_in_arena.rs:322:13
[INFO] [stdout]     |
[INFO] [stdout] 315 |         unsafe fn insert_unsafe(&mut self, mut next: Ptr<Node<T>>, value: T) {
[INFO] [stdout]     |         -------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] ...
[INFO] [stdout] 322 |             unsafe {
[INFO] [stdout]     |             ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout]     = note: this `unsafe` block does contain unsafe operations, but those are already allowed in an `unsafe fn`
[INFO] [stdout]     = note: `#[allow(unsafe_op_in_unsafe_fn)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `sentinel`
[INFO] [stdout]   --> src/test05_nodes_in_hashmap.rs:99:16
[INFO] [stdout]    |
[INFO] [stdout] 99 |         pub fn sentinel(&self) -> *const Node<T> {
[INFO] [stdout]    |                ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_mut_unchecked`
[INFO] [stdout]    --> src/test05_nodes_in_hashmap.rs:115:23
[INFO] [stdout]     |
[INFO] [stdout] 115 |         pub unsafe fn get_mut_unchecked(&mut self, ptr: *const Node<T>) -> Option<&mut Node<T>> {
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_mut`
[INFO] [stdout]    --> src/test05_nodes_in_hashmap.rs:120:16
[INFO] [stdout]     |
[INFO] [stdout] 120 |         pub fn get_mut(&mut self, ptr: *const Node<T>) -> Option<NodeMut<T>> {
[INFO] [stdout]     |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `tail`
[INFO] [stdout]    --> src/test05_nodes_in_hashmap.rs:127:16
[INFO] [stdout]     |
[INFO] [stdout] 127 |         pub fn tail(&self) -> &Node<T> {
[INFO] [stdout]     |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_empty`
[INFO] [stdout]    --> src/test05_nodes_in_hashmap.rs:130:16
[INFO] [stdout]     |
[INFO] [stdout] 130 |         pub fn is_empty(&self) -> bool {
[INFO] [stdout]     |                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push_front`
[INFO] [stdout]    --> src/test05_nodes_in_hashmap.rs:155:16
[INFO] [stdout]     |
[INFO] [stdout] 155 |         pub fn push_front(&mut self, value: T) {
[INFO] [stdout]     |                ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_mut_unchecked`
[INFO] [stdout]   --> src/test06_nodes_in_mepoo.rs:64:23
[INFO] [stdout]    |
[INFO] [stdout] 64 |         pub unsafe fn get_mut_unchecked(&mut self, ptr: Ptr<Node<T>>) -> Option<&mut Node<T>> {
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_mut`
[INFO] [stdout]   --> src/test06_nodes_in_mepoo.rs:67:16
[INFO] [stdout]    |
[INFO] [stdout] 67 |         pub fn get_mut(&mut self, ptr: Ptr<Node<T>>) -> Option<NodeMut<T>> {
[INFO] [stdout]    |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `tail`
[INFO] [stdout]   --> src/test06_nodes_in_mepoo.rs:73:16
[INFO] [stdout]    |
[INFO] [stdout] 73 |         pub fn tail(&self) -> Ref<Node<T>> {
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_empty`
[INFO] [stdout]   --> src/test06_nodes_in_mepoo.rs:76:16
[INFO] [stdout]    |
[INFO] [stdout] 76 |         pub fn is_empty(&self) -> bool {
[INFO] [stdout]    |                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push_front`
[INFO] [stdout]    --> src/test06_nodes_in_mepoo.rs:100:16
[INFO] [stdout]     |
[INFO] [stdout] 100 |         pub fn push_front(&mut self, value: T) {
[INFO] [stdout]     |                ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Node`
[INFO] [stdout]  --> src/test07_nodes_in_arena.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 |     struct Node<'a, T> {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Graph`
[INFO] [stdout]   --> src/test07_nodes_in_arena.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 |     struct Graph<'a, T> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Node`
[INFO] [stdout]   --> src/test07_nodes_in_arena.rs:56:16
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub struct Node<T> {
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Graph`
[INFO] [stdout]   --> src/test07_nodes_in_arena.rs:61:16
[INFO] [stdout]    |
[INFO] [stdout] 61 |     pub struct Graph<T> {
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `NodeRefMut`
[INFO] [stdout]   --> src/test07_nodes_in_arena.rs:66:16
[INFO] [stdout]    |
[INFO] [stdout] 66 |     pub struct NodeRefMut<'a, T>(&'a mut Node<T>);
[INFO] [stdout]    |                ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `value`
[INFO] [stdout]   --> src/test07_nodes_in_arena.rs:68:16
[INFO] [stdout]    |
[INFO] [stdout] 68 |         pub fn value(&self) -> &T {
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `value_mut`
[INFO] [stdout]   --> src/test07_nodes_in_arena.rs:71:16
[INFO] [stdout]    |
[INFO] [stdout] 71 |         pub fn value_mut(&mut self) -> &mut T {
[INFO] [stdout]    |                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `other`
[INFO] [stdout]   --> src/test07_nodes_in_arena.rs:74:16
[INFO] [stdout]    |
[INFO] [stdout] 74 |         pub fn other(&mut self) -> Self {
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `construct_graph`
[INFO] [stdout]   --> src/test07_nodes_in_arena.rs:79:12
[INFO] [stdout]    |
[INFO] [stdout] 79 |     pub fn construct_graph() -> Graph<usize> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `other`
[INFO] [stdout]   --> src/test07_nodes_in_arena.rs:95:16
[INFO] [stdout]    |
[INFO] [stdout] 95 |         pub fn other(&self) -> &Self {
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `head`
[INFO] [stdout]    --> src/test07_nodes_in_arena.rs:101:16
[INFO] [stdout]     |
[INFO] [stdout] 101 |         pub fn head(&self) -> &Node<T> {
[INFO] [stdout]     |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `head_mut`
[INFO] [stdout]    --> src/test07_nodes_in_arena.rs:105:16
[INFO] [stdout]     |
[INFO] [stdout] 105 |         pub fn head_mut(&mut self) -> NodeRefMut<T> {
[INFO] [stdout]     |                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_mut`
[INFO] [stdout]    --> src/test07_nodes_in_arena.rs:232:16
[INFO] [stdout]     |
[INFO] [stdout] 232 |         pub fn get_mut(&mut self, p: Ptr<T>) -> &mut T {
[INFO] [stdout]     |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `sentinel`
[INFO] [stdout]    --> src/test07_nodes_in_arena.rs:295:16
[INFO] [stdout]     |
[INFO] [stdout] 295 |         pub fn sentinel(&self) -> Ptr<Node<T>> {
[INFO] [stdout]     |                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `tail`
[INFO] [stdout]    --> src/test07_nodes_in_arena.rs:301:16
[INFO] [stdout]     |
[INFO] [stdout] 301 |         pub fn tail(&self) -> Ref<Node<T>> {
[INFO] [stdout]     |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_empty`
[INFO] [stdout]    --> src/test07_nodes_in_arena.rs:304:16
[INFO] [stdout]     |
[INFO] [stdout] 304 |         pub fn is_empty(&self) -> bool {
[INFO] [stdout]     |                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push_front`
[INFO] [stdout]    --> src/test07_nodes_in_arena.rs:338:16
[INFO] [stdout]     |
[INFO] [stdout] 338 |         pub fn push_front(&mut self, value: T) {
[INFO] [stdout]     |                ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 29 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 28s
[INFO] running `Command { std: "docker" "inspect" "7496a65344e7137ec640063c7aa4145394dc6ad3ec4b309626897e94facca704", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7496a65344e7137ec640063c7aa4145394dc6ad3ec4b309626897e94facca704", kill_on_drop: false }`
[INFO] [stdout] 7496a65344e7137ec640063c7aa4145394dc6ad3ec4b309626897e94facca704
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e102ac5a5b4915d1ffeff4a7b0eea397dac61a3eb24d10743448cdb916b80ebd
[INFO] running `Command { std: "docker" "start" "-a" "e102ac5a5b4915d1ffeff4a7b0eea397dac61a3eb24d10743448cdb916b80ebd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling graph_in_rust_with_unsafe v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/test07_nodes_in_arena.rs:322:13
[INFO] [stdout]     |
[INFO] [stdout] 315 |         unsafe fn insert_unsafe(&mut self, mut next: Ptr<Node<T>>, value: T) {
[INFO] [stdout]     |         -------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] ...
[INFO] [stdout] 322 |             unsafe {
[INFO] [stdout]     |             ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout]     = note: this `unsafe` block does contain unsafe operations, but those are already allowed in an `unsafe fn`
[INFO] [stdout]     = note: `#[allow(unsafe_op_in_unsafe_fn)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `value`
[INFO] [stdout]  --> src/test03_two_nodes_graph.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |         pub value: T,
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `value`
[INFO] [stdout]    --> src/test03_two_nodes_graph.rs:102:16
[INFO] [stdout]     |
[INFO] [stdout] 102 |         pub fn value(&self) -> &T {
[INFO] [stdout]     |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `value`
[INFO] [stdout]  --> src/test07_nodes_in_arena.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |         pub value: T,
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Graph`
[INFO] [stdout]   --> src/test07_nodes_in_arena.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 |     struct Graph<'a, T> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `nodes`
[INFO] [stdout]   --> src/test07_nodes_in_arena.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |         nodes: Arena<Node<T>>,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `value`
[INFO] [stdout]   --> src/test07_nodes_in_arena.rs:68:16
[INFO] [stdout]    |
[INFO] [stdout] 68 |         pub fn value(&self) -> &T {
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `other`
[INFO] [stdout]   --> src/test07_nodes_in_arena.rs:74:16
[INFO] [stdout]    |
[INFO] [stdout] 74 |         pub fn other(&mut self) -> Self {
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_mut`
[INFO] [stdout]    --> src/test07_nodes_in_arena.rs:232:16
[INFO] [stdout]     |
[INFO] [stdout] 232 |         pub fn get_mut(&mut self, p: Ptr<T>) -> &mut T {
[INFO] [stdout]     |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 6.55s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/graph_in_rust_with_unsafe-d7cbe88c1999184b)
[INFO] running `Command { std: "docker" "inspect" "e102ac5a5b4915d1ffeff4a7b0eea397dac61a3eb24d10743448cdb916b80ebd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e102ac5a5b4915d1ffeff4a7b0eea397dac61a3eb24d10743448cdb916b80ebd", kill_on_drop: false }`
[INFO] [stdout] e102ac5a5b4915d1ffeff4a7b0eea397dac61a3eb24d10743448cdb916b80ebd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 134d00430d26d61212e6a499fcf482806a9e883f7599e6f08dc626bd99df81df
[INFO] running `Command { std: "docker" "start" "-a" "134d00430d26d61212e6a499fcf482806a9e883f7599e6f08dc626bd99df81df", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]    --> src/test07_nodes_in_arena.rs:322:13
[INFO] [stderr]     |
[INFO] [stderr] 315 |         unsafe fn insert_unsafe(&mut self, mut next: Ptr<Node<T>>, value: T) {
[INFO] [stderr]     |         -------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stderr] ...
[INFO] [stderr] 322 |             unsafe {
[INFO] [stderr]     |             ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stderr]     = note: this `unsafe` block does contain unsafe operations, but those are already allowed in an `unsafe fn`
[INFO] [stderr]     = note: `#[allow(unsafe_op_in_unsafe_fn)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `value`
[INFO] [stderr]  --> src/test03_two_nodes_graph.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |         pub value: T,
[INFO] [stderr]   |         ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `value`
[INFO] [stderr]    --> src/test03_two_nodes_graph.rs:102:16
[INFO] [stderr]     |
[INFO] [stderr] 102 |         pub fn value(&self) -> &T {
[INFO] [stderr]     |                ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `value`
[INFO] [stderr]  --> src/test07_nodes_in_arena.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |         pub value: T,
[INFO] [stderr]   |         ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Graph`
[INFO] [stderr]   --> src/test07_nodes_in_arena.rs:30:12
[INFO] [stderr]    |
[INFO] [stderr] 30 |     struct Graph<'a, T> {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `nodes`
[INFO] [stderr]   --> src/test07_nodes_in_arena.rs:62:9
[INFO] [stderr]    |
[INFO] [stderr] 62 |         nodes: Arena<Node<T>>,
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `value`
[INFO] [stderr]   --> src/test07_nodes_in_arena.rs:68:16
[INFO] [stderr]    |
[INFO] [stderr] 68 |         pub fn value(&self) -> &T {
[INFO] [stderr]    |                ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `other`
[INFO] [stderr]   --> src/test07_nodes_in_arena.rs:74:16
[INFO] [stderr]    |
[INFO] [stderr] 74 |         pub fn other(&mut self) -> Self {
[INFO] [stderr]    |                ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_mut`
[INFO] [stderr]    --> src/test07_nodes_in_arena.rs:232:16
[INFO] [stderr]     |
[INFO] [stderr] 232 |         pub fn get_mut(&mut self, p: Ptr<T>) -> &mut T {
[INFO] [stderr]     |                ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `graph_in_rust_with_unsafe` (bin "graph_in_rust_with_unsafe" test) generated 9 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.32s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/graph_in_rust_with_unsafe-d7cbe88c1999184b)
[INFO] [stdout] 
[INFO] [stdout] running 17 tests
[INFO] [stdout] test test01_box_and_ptr::test01_0 ... ok
[INFO] [stdout] test test01_box_and_ptr::test01_1 ... ok
[INFO] [stdout] test test01_box_and_ptr::test01_2::test ... ok
[INFO] [stdout] test test01_box_and_ptr::test01_3::test ... ok
[INFO] [stdout] test test02_single_node_graph::test02_1 ... ok
[INFO] [stdout] test test03_two_nodes_graph::not_compilable::test ... ok
[INFO] [stdout] test test03_two_nodes_graph::test03_1 ... ok
[INFO] [stdout] test test03_two_nodes_graph::with_cell::test1 ... ok
[INFO] [stdout] test test03_two_nodes_graph::graph3::test ... ok
[INFO] [stdout] test test03_two_nodes_graph::with_cell::test2 ... ok
[INFO] [stdout] test test04_nodes_in_vec::test ... ok
[INFO] [stdout] test test05_nodes_in_hashmap::test_list ... ok
[INFO] [stdout] test test05_nodes_in_hashmap::test_pool ... ok
[INFO] [stdout] test test06_nodes_in_mepoo::test_list ... ok
[INFO] [stdout] test test07_nodes_in_arena::test_list ... ok
[INFO] [stdout] test test07_nodes_in_arena::test_with_pointer ... ok
[INFO] [stdout] test test07_nodes_in_arena::without_pointer::test1 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 17 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "134d00430d26d61212e6a499fcf482806a9e883f7599e6f08dc626bd99df81df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "134d00430d26d61212e6a499fcf482806a9e883f7599e6f08dc626bd99df81df", kill_on_drop: false }`
[INFO] [stdout] 134d00430d26d61212e6a499fcf482806a9e883f7599e6f08dc626bd99df81df