[INFO] updating cached repository https://github.com/Adenylatcyclase/rust-circle
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8f83bec6f85bc53da5b4204e976b4795110222a8
[INFO] testing Adenylatcyclase/rust-circle against beta-2020-07-24 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAdenylatcyclase%2Frust-circle" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Adenylatcyclase/rust-circle on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Adenylatcyclase/rust-circle
[INFO] finished tweaking git repo https://github.com/Adenylatcyclase/rust-circle
[INFO] tweaked toml for git repo https://github.com/Adenylatcyclase/rust-circle written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/Adenylatcyclase/rust-circle already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f6f101131a38d7f09c49e5d7dbfd04744e2cc99966006faa5bd71edf70572389
[INFO] running `Command { std: "docker" "start" "-a" "f6f101131a38d7f09c49e5d7dbfd04744e2cc99966006faa5bd71edf70572389", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f6f101131a38d7f09c49e5d7dbfd04744e2cc99966006faa5bd71edf70572389", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6f101131a38d7f09c49e5d7dbfd04744e2cc99966006faa5bd71edf70572389", kill_on_drop: false }`
[INFO] [stdout] f6f101131a38d7f09c49e5d7dbfd04744e2cc99966006faa5bd71edf70572389
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 635927634d6aa7301e00f696b0ed361f65eb19fcd4854b436d29d90ef8c810e1
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "635927634d6aa7301e00f696b0ed361f65eb19fcd4854b436d29d90ef8c810e1", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-circle v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `RefMut`
[INFO] [stdout]  --> src/circle_safe_int.rs:2:26
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::cell::{RefCell, RefMut};
[INFO] [stdout]   |                          ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Circle`
[INFO] [stdout]  --> src/circle_safe_ext.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Circle{
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Node`
[INFO] [stdout]  --> src/circle_safe_ext.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct Node{
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `remove`
[INFO] [stdout]   --> src/circle_safe_ext.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn remove(&mut self) -> i32 {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/circle_safe_ext.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn new(val: i32) -> Circle {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `value`
[INFO] [stdout]   --> src/circle_safe_ext.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn value(&self) -> i32 {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next`
[INFO] [stdout]   --> src/circle_safe_ext.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn next(&mut self) -> i32{
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `last`
[INFO] [stdout]   --> src/circle_safe_ext.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 44 |     pub fn last(&mut self) -> i32{
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_after`
[INFO] [stdout]   --> src/circle_safe_ext.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub fn insert_after(&mut self, val: i32){
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_after_step`
[INFO] [stdout]   --> src/circle_safe_ext.rs:62:12
[INFO] [stdout]    |
[INFO] [stdout] 62 |     pub fn insert_after_step(&mut self, val: i32){
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_before`
[INFO] [stdout]   --> src/circle_safe_ext.rs:67:12
[INFO] [stdout]    |
[INFO] [stdout] 67 |     pub fn insert_before(&mut self, val: i32){
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_before_step`
[INFO] [stdout]   --> src/circle_safe_ext.rs:77:12
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub fn insert_before_step(&mut self, val: i32){
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/circle_safe_ext.rs:84:12
[INFO] [stdout]    |
[INFO] [stdout] 84 |     pub fn new(val: i32) -> Rc<RefCell<Node>> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `combine`
[INFO] [stdout]   --> src/circle_safe_ext.rs:88:12
[INFO] [stdout]    |
[INFO] [stdout] 88 |     pub fn combine(node1: &mut Rc<RefCell<Node>>, node2: &mut Rc<RefCell<Node>>){
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `value`
[INFO] [stdout]   --> src/circle_safe_ext.rs:93:12
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub fn value(&self) -> i32 {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push_after_step`
[INFO] [stdout]   --> src/circle_safe_int.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn push_after_step(&mut self, val: T){
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push_before`
[INFO] [stdout]   --> src/circle_safe_int.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn push_before(&mut self, val:T){
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push_before_step`
[INFO] [stdout]   --> src/circle_safe_int.rs:58:12
[INFO] [stdout]    |
[INFO] [stdout] 58 |     pub fn push_before_step(&mut self, val: T){
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `last`
[INFO] [stdout]   --> src/circle_safe_int.rs:71:12
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn last(&mut self) -> &T{
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `last`
[INFO] [stdout]    --> src/circle_safe_int.rs:108:12
[INFO] [stdout]     |
[INFO] [stdout] 108 |     pub fn last(&self) -> Option<Rc<Self>> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `advent09`
[INFO] [stdout]   --> src/main.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn advent09(){
[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 0.80s
[INFO] running `Command { std: "docker" "inspect" "635927634d6aa7301e00f696b0ed361f65eb19fcd4854b436d29d90ef8c810e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "635927634d6aa7301e00f696b0ed361f65eb19fcd4854b436d29d90ef8c810e1", kill_on_drop: false }`
[INFO] [stdout] 635927634d6aa7301e00f696b0ed361f65eb19fcd4854b436d29d90ef8c810e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 558f81a37f1a7af02a45ba236e94bd206b4119ad71036c3ec1fff810f1dfb245
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "558f81a37f1a7af02a45ba236e94bd206b4119ad71036c3ec1fff810f1dfb245", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-circle v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `RefMut`
[INFO] [stdout]  --> src/circle_safe_int.rs:2:26
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::cell::{RefCell, RefMut};
[INFO] [stdout]   |                          ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Circle`
[INFO] [stdout]  --> src/circle_safe_ext.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Circle{
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Node`
[INFO] [stdout]  --> src/circle_safe_ext.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct Node{
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `remove`
[INFO] [stdout]   --> src/circle_safe_ext.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn remove(&mut self) -> i32 {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/circle_safe_ext.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn new(val: i32) -> Circle {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `value`
[INFO] [stdout]   --> src/circle_safe_ext.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn value(&self) -> i32 {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next`
[INFO] [stdout]   --> src/circle_safe_ext.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn next(&mut self) -> i32{
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `last`
[INFO] [stdout]   --> src/circle_safe_ext.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 44 |     pub fn last(&mut self) -> i32{
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_after`
[INFO] [stdout]   --> src/circle_safe_ext.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub fn insert_after(&mut self, val: i32){
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_after_step`
[INFO] [stdout]   --> src/circle_safe_ext.rs:62:12
[INFO] [stdout]    |
[INFO] [stdout] 62 |     pub fn insert_after_step(&mut self, val: i32){
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_before`
[INFO] [stdout]   --> src/circle_safe_ext.rs:67:12
[INFO] [stdout]    |
[INFO] [stdout] 67 |     pub fn insert_before(&mut self, val: i32){
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_before_step`
[INFO] [stdout]   --> src/circle_safe_ext.rs:77:12
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub fn insert_before_step(&mut self, val: i32){
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/circle_safe_ext.rs:84:12
[INFO] [stdout]    |
[INFO] [stdout] 84 |     pub fn new(val: i32) -> Rc<RefCell<Node>> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `combine`
[INFO] [stdout]   --> src/circle_safe_ext.rs:88:12
[INFO] [stdout]    |
[INFO] [stdout] 88 |     pub fn combine(node1: &mut Rc<RefCell<Node>>, node2: &mut Rc<RefCell<Node>>){
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `value`
[INFO] [stdout]   --> src/circle_safe_ext.rs:93:12
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub fn value(&self) -> i32 {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push_after_step`
[INFO] [stdout]   --> src/circle_safe_int.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn push_after_step(&mut self, val: T){
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push_before`
[INFO] [stdout]   --> src/circle_safe_int.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn push_before(&mut self, val:T){
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push_before_step`
[INFO] [stdout]   --> src/circle_safe_int.rs:58:12
[INFO] [stdout]    |
[INFO] [stdout] 58 |     pub fn push_before_step(&mut self, val: T){
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `last`
[INFO] [stdout]   --> src/circle_safe_int.rs:71:12
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn last(&mut self) -> &T{
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `last`
[INFO] [stdout]    --> src/circle_safe_int.rs:108:12
[INFO] [stdout]     |
[INFO] [stdout] 108 |     pub fn last(&self) -> Option<Rc<Self>> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `advent09`
[INFO] [stdout]   --> src/main.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn advent09(){
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 21 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.72s
[INFO] running `Command { std: "docker" "inspect" "558f81a37f1a7af02a45ba236e94bd206b4119ad71036c3ec1fff810f1dfb245", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "558f81a37f1a7af02a45ba236e94bd206b4119ad71036c3ec1fff810f1dfb245", kill_on_drop: false }`
[INFO] [stdout] 558f81a37f1a7af02a45ba236e94bd206b4119ad71036c3ec1fff810f1dfb245
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 910be6846a67cd998b5c433dd45c6016965f530bff4ee5a52432e0fcc84423b3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "910be6846a67cd998b5c433dd45c6016965f530bff4ee5a52432e0fcc84423b3", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `RefMut`
[INFO] [stderr]  --> src/circle_safe_int.rs:2:26
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::cell::{RefCell, RefMut};
[INFO] [stderr]   |                          ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Circle`
[INFO] [stderr]  --> src/circle_safe_ext.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct Circle{
[INFO] [stderr]   |            ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Node`
[INFO] [stderr]  --> src/circle_safe_ext.rs:8:8
[INFO] [stderr]   |
[INFO] [stderr] 8 | struct Node{
[INFO] [stderr]   |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `remove`
[INFO] [stderr]   --> src/circle_safe_ext.rs:16:12
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn remove(&mut self) -> i32 {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/circle_safe_ext.rs:28:12
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub fn new(val: i32) -> Circle {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `value`
[INFO] [stderr]   --> src/circle_safe_ext.rs:32:12
[INFO] [stderr]    |
[INFO] [stderr] 32 |     pub fn value(&self) -> i32 {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `next`
[INFO] [stderr]   --> src/circle_safe_ext.rs:36:12
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn next(&mut self) -> i32{
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `last`
[INFO] [stderr]   --> src/circle_safe_ext.rs:44:12
[INFO] [stderr]    |
[INFO] [stderr] 44 |     pub fn last(&mut self) -> i32{
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `insert_after`
[INFO] [stderr]   --> src/circle_safe_ext.rs:52:12
[INFO] [stderr]    |
[INFO] [stderr] 52 |     pub fn insert_after(&mut self, val: i32){
[INFO] [stderr]    |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `insert_after_step`
[INFO] [stderr]   --> src/circle_safe_ext.rs:62:12
[INFO] [stderr]    |
[INFO] [stderr] 62 |     pub fn insert_after_step(&mut self, val: i32){
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `insert_before`
[INFO] [stderr]   --> src/circle_safe_ext.rs:67:12
[INFO] [stderr]    |
[INFO] [stderr] 67 |     pub fn insert_before(&mut self, val: i32){
[INFO] [stderr]    |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `insert_before_step`
[INFO] [stderr]   --> src/circle_safe_ext.rs:77:12
[INFO] [stderr]    |
[INFO] [stderr] 77 |     pub fn insert_before_step(&mut self, val: i32){
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/circle_safe_ext.rs:84:12
[INFO] [stderr]    |
[INFO] [stderr] 84 |     pub fn new(val: i32) -> Rc<RefCell<Node>> {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `combine`
[INFO] [stderr]   --> src/circle_safe_ext.rs:88:12
[INFO] [stderr]    |
[INFO] [stderr] 88 |     pub fn combine(node1: &mut Rc<RefCell<Node>>, node2: &mut Rc<RefCell<Node>>){
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `value`
[INFO] [stderr]   --> src/circle_safe_ext.rs:93:12
[INFO] [stderr]    |
[INFO] [stderr] 93 |     pub fn value(&self) -> i32 {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `push_after_step`
[INFO] [stderr]   --> src/circle_safe_int.rs:34:12
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn push_after_step(&mut self, val: T){
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `push_before`
[INFO] [stderr]   --> src/circle_safe_int.rs:43:12
[INFO] [stderr]    |
[INFO] [stderr] 43 |     pub fn push_before(&mut self, val:T){
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `push_before_step`
[INFO] [stderr]   --> src/circle_safe_int.rs:58:12
[INFO] [stderr]    |
[INFO] [stderr] 58 |     pub fn push_before_step(&mut self, val: T){
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `last`
[INFO] [stderr]   --> src/circle_safe_int.rs:71:12
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn last(&mut self) -> &T{
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `last`
[INFO] [stderr]    --> src/circle_safe_int.rs:108:12
[INFO] [stderr]     |
[INFO] [stderr] 108 |     pub fn last(&self) -> Option<Rc<Self>> {
[INFO] [stderr]     |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `advent09`
[INFO] [stderr]   --> src/main.rs:30:4
[INFO] [stderr]    |
[INFO] [stderr] 30 | fn advent09(){
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 21 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_circle-40fabf38fef772b7
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "910be6846a67cd998b5c433dd45c6016965f530bff4ee5a52432e0fcc84423b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "910be6846a67cd998b5c433dd45c6016965f530bff4ee5a52432e0fcc84423b3", kill_on_drop: false }`
[INFO] [stdout] 910be6846a67cd998b5c433dd45c6016965f530bff4ee5a52432e0fcc84423b3