[INFO] cloning repository https://github.com/AlperROzkan/rustfam
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AlperROzkan/rustfam" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlperROzkan%2Frustfam", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlperROzkan%2Frustfam'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 32ffcfaff87b514ee48962a66ca7acc8baeaa9e9
[INFO] checking AlperROzkan/rustfam against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlperROzkan%2Frustfam" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AlperROzkan/rustfam on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/AlperROzkan/rustfam
[INFO] finished tweaking git repo https://github.com/AlperROzkan/rustfam
[INFO] tweaked toml for git repo https://github.com/AlperROzkan/rustfam written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/AlperROzkan/rustfam already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_test v1.0.126
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b154dc38065ca1183df96ab0e9ec687cf385309ab11b40fa8e7edcf10dece3de
[INFO] running `Command { std: "docker" "start" "-a" "b154dc38065ca1183df96ab0e9ec687cf385309ab11b40fa8e7edcf10dece3de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b154dc38065ca1183df96ab0e9ec687cf385309ab11b40fa8e7edcf10dece3de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b154dc38065ca1183df96ab0e9ec687cf385309ab11b40fa8e7edcf10dece3de", kill_on_drop: false }`
[INFO] [stdout] b154dc38065ca1183df96ab0e9ec687cf385309ab11b40fa8e7edcf10dece3de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0fa8fe7b7aa9c7553c6c0a32756bde0792d31e0dffef5e82b6aabe2a4500ef2e
[INFO] running `Command { std: "docker" "start" "-a" "0fa8fe7b7aa9c7553c6c0a32756bde0792d31e0dffef5e82b6aabe2a4500ef2e", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking serde_test v1.0.126
[INFO] [stderr]     Checking FamRust v0.2.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed src/model/family/tree.rs (1 fix)
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/model/family/tree.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn node_1(&self) -> &'a Family<'a> {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] 47 |         &self.node_1()
[INFO] [stdout]    |          ------------- recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/model/family/tree.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 |     pub fn node_2(&self) -> &'a Family<'a> {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] 52 |         &self.node_2()
[INFO] [stdout]    |          ------------- recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_children`
[INFO] [stdout]    --> src/model/family/family.rs:114:12
[INFO] [stdout]     |
[INFO] [stdout] 114 |     pub fn add_children(&mut self, children: Vec<Person<'a>>) {
[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_family_member_firstname`
[INFO] [stdout]    --> src/model/family/family.rs:125:12
[INFO] [stdout]     |
[INFO] [stdout] 125 |     pub fn get_family_member_firstname(&mut self, firstname: String) -> Option<Person> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `linked_1`
[INFO] [stdout]   --> src/model/family/pairing.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn linked_1(&self) -> &T {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `linked_1_mut`
[INFO] [stdout]   --> src/model/family/pairing.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn linked_1_mut(&mut self) -> &mut T {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `linked_2`
[INFO] [stdout]   --> src/model/family/pairing.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn linked_2(&self) -> &T {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `linked_2_mut`
[INFO] [stdout]   --> src/model/family/pairing.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn linked_2_mut(&mut self) -> &mut T {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `node_1`
[INFO] [stdout]   --> src/model/family/tree.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn node_1(&self) -> &'a Family<'a> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `node_2`
[INFO] [stdout]   --> src/model/family/tree.rs:51:12
[INFO] [stdout]    |
[INFO] [stdout] 51 |     pub fn node_2(&self) -> &'a Family<'a> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `id`
[INFO] [stdout]   --> src/model/person.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn id(&self) -> &u16 {
[INFO] [stdout]    |            ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `lastname`
[INFO] [stdout]   --> src/model/person.rs:45:12
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn lastname(&self) -> &'a str {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/model/family/tree.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn node_1(&self) -> &'a Family<'a> {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] 47 |         &self.node_1()
[INFO] [stdout]    |          ------------- recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/model/family/family.rs:289:17
[INFO] [stdout]     |
[INFO] [stdout] 289 |                 buf_reader.read_to_string(&mut contents);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/model/family/tree.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 |     pub fn node_2(&self) -> &'a Family<'a> {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] 52 |         &self.node_2()
[INFO] [stdout]    |          ------------- recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_existing`
[INFO] [stdout]   --> src/model/family/family.rs:75:12
[INFO] [stdout]    |
[INFO] [stdout] 75 |     pub fn new_existing(
[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: `add_children`
[INFO] [stdout]    --> src/model/family/family.rs:114:12
[INFO] [stdout]     |
[INFO] [stdout] 114 |     pub fn add_children(&mut self, children: Vec<Person<'a>>) {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_family_member_firstname`
[INFO] [stdout]    --> src/model/family/family.rs:125:12
[INFO] [stdout]     |
[INFO] [stdout] 125 |     pub fn get_family_member_firstname(&mut self, firstname: String) -> Option<Person> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_parent_firstname`
[INFO] [stdout]    --> src/model/family/family.rs:144:12
[INFO] [stdout]     |
[INFO] [stdout] 144 |     pub fn get_parent_firstname(&mut self, firstname: String) -> Option<Person> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_child_firstname`
[INFO] [stdout]    --> src/model/family/family.rs:158:12
[INFO] [stdout]     |
[INFO] [stdout] 158 |     pub fn get_child_firstname(&mut self, firstname: String) -> Option<Person> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `init_1`
[INFO] [stdout]    --> src/model/family/family.rs:190:12
[INFO] [stdout]     |
[INFO] [stdout] 190 |     pub fn init_1() -> Family<'a> {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `init_2`
[INFO] [stdout]    --> src/model/family/family.rs:207:12
[INFO] [stdout]     |
[INFO] [stdout] 207 |     pub fn init_2() -> Family<'a> {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/model/family/pairing.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn new(linked_1: T, linked_2: T) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `linked_1`
[INFO] [stdout]   --> src/model/family/pairing.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn linked_1(&self) -> &T {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `linked_1_mut`
[INFO] [stdout]   --> src/model/family/pairing.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn linked_1_mut(&mut self) -> &mut T {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `linked_2`
[INFO] [stdout]   --> src/model/family/pairing.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn linked_2(&self) -> &T {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `linked_2_mut`
[INFO] [stdout]   --> src/model/family/pairing.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn linked_2_mut(&mut self) -> &mut T {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Tree`
[INFO] [stdout]   --> src/model/family/tree.rs:14:10
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub enum Tree<'a> {
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/model/family/tree.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn new(
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `node_1`
[INFO] [stdout]   --> src/model/family/tree.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn node_1(&self) -> &'a Family<'a> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `node_2`
[INFO] [stdout]   --> src/model/family/tree.rs:51:12
[INFO] [stdout]    |
[INFO] [stdout] 51 |     pub fn node_2(&self) -> &'a Family<'a> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `id`
[INFO] [stdout]   --> src/model/person.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn id(&self) -> &u16 {
[INFO] [stdout]    |            ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `firstname`
[INFO] [stdout]   --> src/model/person.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn firstname(&self) -> &'a str {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `lastname`
[INFO] [stdout]   --> src/model/person.rs:45:12
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn lastname(&self) -> &'a str {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 21 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.08s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Checking FamRust v0.2.0 (/tmp/fixit)
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/model/family/tree.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn node_1(&self) -> &'a Family<'a> {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] 47 |         &self.node_1()
[INFO] [stdout]    |          ------------- recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/model/family/tree.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 |     pub fn node_2(&self) -> &'a Family<'a> {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] 52 |         &self.node_2()
[INFO] [stdout]    |          ------------- recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/model/family/tree.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn node_1(&self) -> &'a Family<'a> {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] 47 |         &self.node_1()
[INFO] [stdout]    |          ------------- recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/model/family/tree.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 |     pub fn node_2(&self) -> &'a Family<'a> {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] 52 |         &self.node_2()
[INFO] [stdout]    |          ------------- recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_existing`
[INFO] [stdout]   --> src/model/family/family.rs:75:12
[INFO] [stdout]    |
[INFO] [stdout] 75 |     pub fn new_existing(
[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: `add_children`
[INFO] [stdout]    --> src/model/family/family.rs:114:12
[INFO] [stdout]     |
[INFO] [stdout] 114 |     pub fn add_children(&mut self, children: Vec<Person<'a>>) {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_family_member_firstname`
[INFO] [stdout]    --> src/model/family/family.rs:125:12
[INFO] [stdout]     |
[INFO] [stdout] 125 |     pub fn get_family_member_firstname(&mut self, firstname: String) -> Option<Person> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_parent_firstname`
[INFO] [stdout]    --> src/model/family/family.rs:144:12
[INFO] [stdout]     |
[INFO] [stdout] 144 |     pub fn get_parent_firstname(&mut self, firstname: String) -> Option<Person> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_child_firstname`
[INFO] [stdout]    --> src/model/family/family.rs:158:12
[INFO] [stdout]     |
[INFO] [stdout] 158 |     pub fn get_child_firstname(&mut self, firstname: String) -> Option<Person> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `init_1`
[INFO] [stdout]    --> src/model/family/family.rs:190:12
[INFO] [stdout]     |
[INFO] [stdout] 190 |     pub fn init_1() -> Family<'a> {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `init_2`
[INFO] [stdout]    --> src/model/family/family.rs:207:12
[INFO] [stdout]     |
[INFO] [stdout] 207 |     pub fn init_2() -> Family<'a> {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/model/family/pairing.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn new(linked_1: T, linked_2: T) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `linked_1`
[INFO] [stdout]   --> src/model/family/pairing.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn linked_1(&self) -> &T {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `linked_1_mut`
[INFO] [stdout]   --> src/model/family/pairing.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn linked_1_mut(&mut self) -> &mut T {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `linked_2`
[INFO] [stdout]   --> src/model/family/pairing.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn linked_2(&self) -> &T {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `linked_2_mut`
[INFO] [stdout]   --> src/model/family/pairing.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn linked_2_mut(&mut self) -> &mut T {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Tree`
[INFO] [stdout]   --> src/model/family/tree.rs:14:10
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub enum Tree<'a> {
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/model/family/tree.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn new(
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_children`
[INFO] [stdout]    --> src/model/family/family.rs:114:12
[INFO] [stdout]     |
[INFO] [stdout] 114 |     pub fn add_children(&mut self, children: Vec<Person<'a>>) {
[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: `node_1`
[INFO] [stdout]   --> src/model/family/tree.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn node_1(&self) -> &'a Family<'a> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_family_member_firstname`
[INFO] [stdout]    --> src/model/family/family.rs:125:12
[INFO] [stdout]     |
[INFO] [stdout] 125 |     pub fn get_family_member_firstname(&mut self, firstname: String) -> Option<Person> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `node_2`
[INFO] [stdout]   --> src/model/family/tree.rs:51:12
[INFO] [stdout]    |
[INFO] [stdout] 51 |     pub fn node_2(&self) -> &'a Family<'a> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `id`
[INFO] [stdout]   --> src/model/person.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn id(&self) -> &u16 {
[INFO] [stdout]    |            ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `linked_1`
[INFO] [stdout]   --> src/model/family/pairing.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn linked_1(&self) -> &T {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `firstname`
[INFO] [stdout]   --> src/model/person.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn firstname(&self) -> &'a str {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `linked_1_mut`
[INFO] [stdout]   --> src/model/family/pairing.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn linked_1_mut(&mut self) -> &mut T {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `linked_2`
[INFO] [stdout]   --> src/model/family/pairing.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn linked_2(&self) -> &T {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `lastname`
[INFO] [stdout]   --> src/model/person.rs:45:12
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn lastname(&self) -> &'a str {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `linked_2_mut`
[INFO] [stdout]   --> src/model/family/pairing.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn linked_2_mut(&mut self) -> &mut T {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `node_1`
[INFO] [stdout]   --> src/model/family/tree.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn node_1(&self) -> &'a Family<'a> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `node_2`
[INFO] [stdout]   --> src/model/family/tree.rs:51:12
[INFO] [stdout]    |
[INFO] [stdout] 51 |     pub fn node_2(&self) -> &'a Family<'a> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `id`
[INFO] [stdout]   --> src/model/person.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn id(&self) -> &u16 {
[INFO] [stdout]    |            ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `lastname`
[INFO] [stdout]   --> src/model/person.rs:45:12
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn lastname(&self) -> &'a str {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/model/family/family.rs:289:17
[INFO] [stdout]     |
[INFO] [stdout] 289 |                 buf_reader.read_to_string(&mut contents);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 21 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "0fa8fe7b7aa9c7553c6c0a32756bde0792d31e0dffef5e82b6aabe2a4500ef2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fa8fe7b7aa9c7553c6c0a32756bde0792d31e0dffef5e82b6aabe2a4500ef2e", kill_on_drop: false }`
[INFO] [stdout] 0fa8fe7b7aa9c7553c6c0a32756bde0792d31e0dffef5e82b6aabe2a4500ef2e