[INFO] cloning repository https://github.com/KaloyanYosifov/leetcode
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/KaloyanYosifov/leetcode" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKaloyanYosifov%2Fleetcode", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKaloyanYosifov%2Fleetcode'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2ba22c469dd9a932f942f9ad4e3b870bcf35893b
[INFO] checking KaloyanYosifov/leetcode against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKaloyanYosifov%2Fleetcode" "/workspace/builds/worker-90/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-90/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/KaloyanYosifov/leetcode 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/KaloyanYosifov/leetcode
[INFO] finished tweaking git repo https://github.com/KaloyanYosifov/leetcode
[INFO] tweaked toml for git repo https://github.com/KaloyanYosifov/leetcode written to /workspace/builds/worker-90/source/Cargo.toml
[INFO] crate git repo https://github.com/KaloyanYosifov/leetcode 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]     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-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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] 84192bae82a5163abac61c3ceefb6dfe56fa729c397f2a5bd9213ea5f67696ce
[INFO] running `Command { std: "docker" "start" "-a" "84192bae82a5163abac61c3ceefb6dfe56fa729c397f2a5bd9213ea5f67696ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "84192bae82a5163abac61c3ceefb6dfe56fa729c397f2a5bd9213ea5f67696ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84192bae82a5163abac61c3ceefb6dfe56fa729c397f2a5bd9213ea5f67696ce", kill_on_drop: false }`
[INFO] [stdout] 84192bae82a5163abac61c3ceefb6dfe56fa729c397f2a5bd9213ea5f67696ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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] b5fa5464b4abec5aa3fa69e84f6779ab55fcbee61773fabdac4a42312e4dcaa7
[INFO] running `Command { std: "docker" "start" "-a" "b5fa5464b4abec5aa3fa69e84f6779ab55fcbee61773fabdac4a42312e4dcaa7", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking arrays v0.1.0 (/tmp/fixit/arrays)
[INFO] [stderr]     Checking linked_list_impl v0.1.0 (/tmp/fixit/linked_list_impl)
[INFO] [stderr]     Checking leetcode v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating arrays/src/lib.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating linked_list_impl/src/lib.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> arrays/src/plus_one.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Solution;
[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: `plus_one`
[INFO] [stdout]  --> arrays/src/plus_one.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub fn plus_one(mut digits: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> arrays/src/find_pivot_index.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pivot_index`
[INFO] [stdout]  --> arrays/src/find_pivot_index.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub fn pivot_index(nums: Vec<i32>) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> arrays/src/largest_number_twice.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dominant_index`
[INFO] [stdout]  --> arrays/src/largest_number_twice.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub fn dominant_index(nums: Vec<i32>) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]        Fixed linked_list_impl/src/lib.rs (5 fixes)
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> linked_list_impl/src/lib.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn new() -> Self {
[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: `new_with_value`
[INFO] [stdout]   --> linked_list_impl/src/lib.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn new_with_value(value: i32) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get`
[INFO] [stdout]   --> linked_list_impl/src/lib.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn get(&self, index: i32) -> i32 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_at_head`
[INFO] [stdout]   --> linked_list_impl/src/lib.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn add_at_head(&mut self, val: i32) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_at_tail`
[INFO] [stdout]   --> linked_list_impl/src/lib.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 |     fn add_at_tail(&mut self, val: i32) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_at_index`
[INFO] [stdout]   --> linked_list_impl/src/lib.rs:79:8
[INFO] [stdout]    |
[INFO] [stdout] 79 |     fn add_at_index(&mut self, index: i32, val: i32) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `delete_at_index`
[INFO] [stdout]    --> linked_list_impl/src/lib.rs:112:8
[INFO] [stdout]     |
[INFO] [stdout] 112 |     fn delete_at_index(&mut self, index: i32) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `last_item_in_list`
[INFO] [stdout]    --> linked_list_impl/src/lib.rs:146:8
[INFO] [stdout]     |
[INFO] [stdout] 146 |     fn last_item_in_list(&mut self) -> &mut Self {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `item_at_index`
[INFO] [stdout]    --> linked_list_impl/src/lib.rs:154:8
[INFO] [stdout]     |
[INFO] [stdout] 154 |     fn item_at_index(&mut self, index: i32) -> Option<&mut Self> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.96s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking leetcode v0.1.0 (/tmp/fixit)
[INFO] [stderr]     Checking linked_list_impl v0.1.0 (/tmp/fixit/linked_list_impl)
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> arrays/src/plus_one.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Solution;
[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: `plus_one`
[INFO] [stdout]  --> arrays/src/plus_one.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub fn plus_one(mut digits: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> arrays/src/find_pivot_index.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pivot_index`
[INFO] [stdout]  --> arrays/src/find_pivot_index.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub fn pivot_index(nums: Vec<i32>) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> arrays/src/largest_number_twice.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dominant_index`
[INFO] [stdout]  --> arrays/src/largest_number_twice.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub fn dominant_index(nums: Vec<i32>) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> linked_list_impl/src/lib.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn new() -> Self {
[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: `new_with_value`
[INFO] [stdout]   --> linked_list_impl/src/lib.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn new_with_value(value: i32) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get`
[INFO] [stdout]   --> linked_list_impl/src/lib.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn get(&self, index: i32) -> i32 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_at_head`
[INFO] [stdout]   --> linked_list_impl/src/lib.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn add_at_head(&mut self, val: i32) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_at_tail`
[INFO] [stdout]   --> linked_list_impl/src/lib.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 |     fn add_at_tail(&mut self, val: i32) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_at_index`
[INFO] [stdout]   --> linked_list_impl/src/lib.rs:79:8
[INFO] [stdout]    |
[INFO] [stdout] 79 |     fn add_at_index(&mut self, index: i32, val: i32) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `delete_at_index`
[INFO] [stdout]    --> linked_list_impl/src/lib.rs:112:8
[INFO] [stdout]     |
[INFO] [stdout] 112 |     fn delete_at_index(&mut self, index: i32) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `last_item_in_list`
[INFO] [stdout]    --> linked_list_impl/src/lib.rs:146:8
[INFO] [stdout]     |
[INFO] [stdout] 146 |     fn last_item_in_list(&mut self) -> &mut Self {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `item_at_index`
[INFO] [stdout]    --> linked_list_impl/src/lib.rs:154:8
[INFO] [stdout]     |
[INFO] [stdout] 154 |     fn item_at_index(&mut self, index: i32) -> Option<&mut Self> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.66s
[INFO] running `Command { std: "docker" "inspect" "b5fa5464b4abec5aa3fa69e84f6779ab55fcbee61773fabdac4a42312e4dcaa7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5fa5464b4abec5aa3fa69e84f6779ab55fcbee61773fabdac4a42312e4dcaa7", kill_on_drop: false }`
[INFO] [stdout] b5fa5464b4abec5aa3fa69e84f6779ab55fcbee61773fabdac4a42312e4dcaa7