[INFO] updating cached repository https://github.com/rgrativol/lotto6
[INFO] running `"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"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1cf9ca4ab5aff21d0c62abfae4dde01b617cc309
[INFO] checking rgrativol/lotto6 against master#fdc0011561c6365c596dfd8fa1ef388162bc89c7 for pr-66504-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frgrativol%2Flotto6" "/workspace/builds/worker-12/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rgrativol/lotto6 on toolchain fdc0011561c6365c596dfd8fa1ef388162bc89c7
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/rgrativol/lotto6
[INFO] finished tweaking git repo https://github.com/rgrativol/lotto6
[INFO] tweaked toml for git repo https://github.com/rgrativol/lotto6 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/rgrativol/lotto6 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=forbid" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 8329bae7ac887ea8d554ef98af61990c2606785b587621cd640c86957a17bf17
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "8329bae7ac887ea8d554ef98af61990c2606785b587621cd640c86957a17bf17"`
[INFO] [stderr]     Checking lotto6 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `draws`
[INFO] [stderr]   --> src/main.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let draws = load_csv(csv_path);
[INFO] [stderr]    |         ^^^^^ help: consider prefixing with an underscore: `_draws`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `draws`
[INFO] [stderr]  --> src/stats.rs:5:14
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn frequency(draws: &Vec<Draw>) -> Vec<DrawSummary> {
[INFO] [stderr]   |              ^^^^^ help: consider prefixing with an underscore: `_draws`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `draws`
[INFO] [stderr]  --> src/stats.rs:9:25
[INFO] [stderr]   |
[INFO] [stderr] 9 | fn most_overdue_numbers(draws: &Vec<Draw>) -> Vec<DrawSummary> {
[INFO] [stderr]   |                         ^^^^^ help: consider prefixing with an underscore: `_draws`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `draws`
[INFO] [stderr]   --> src/stats.rs:13:24
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn most_common_numbers(draws: &Vec<Draw>) -> Vec<DrawSummary> {
[INFO] [stderr]    |                        ^^^^^ help: consider prefixing with an underscore: `_draws`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `draws`
[INFO] [stderr]   --> src/stats.rs:17:31
[INFO] [stderr]    |
[INFO] [stderr] 17 | fn least_often_picked_numbers(draws: &Vec<Draw>) -> Vec<DrawSummary> {
[INFO] [stderr]    |                               ^^^^^ help: consider prefixing with an underscore: `_draws`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `draws`
[INFO] [stderr]   --> src/stats.rs:21:21
[INFO] [stderr]    |
[INFO] [stderr] 21 | fn most_common_pair(draws: &Vec<Draw>) -> Vec<(u8,u8, u32)> {
[INFO] [stderr]    |                     ^^^^^ help: consider prefixing with an underscore: `_draws`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `draws`
[INFO] [stderr]   --> src/stats.rs:25:25
[INFO] [stderr]    |
[INFO] [stderr] 25 | fn most_common_triplets(draws: &Vec<Draw>) -> Vec<(u8, u8, u8, u32)> {
[INFO] [stderr]    |                         ^^^^^ help: consider prefixing with an underscore: `_draws`
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `DrawSummary`
[INFO] [stderr]  --> src/stats.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | type DrawSummary = (u8, u32);
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `frequency`
[INFO] [stderr]  --> src/stats.rs:5:4
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn frequency(draws: &Vec<Draw>) -> Vec<DrawSummary> {
[INFO] [stderr]   |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `most_overdue_numbers`
[INFO] [stderr]  --> src/stats.rs:9:4
[INFO] [stderr]   |
[INFO] [stderr] 9 | fn most_overdue_numbers(draws: &Vec<Draw>) -> Vec<DrawSummary> {
[INFO] [stderr]   |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `most_common_numbers`
[INFO] [stderr]   --> src/stats.rs:13:4
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn most_common_numbers(draws: &Vec<Draw>) -> Vec<DrawSummary> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `least_often_picked_numbers`
[INFO] [stderr]   --> src/stats.rs:17:4
[INFO] [stderr]    |
[INFO] [stderr] 17 | fn least_often_picked_numbers(draws: &Vec<Draw>) -> Vec<DrawSummary> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `most_common_pair`
[INFO] [stderr]   --> src/stats.rs:21:4
[INFO] [stderr]    |
[INFO] [stderr] 21 | fn most_common_pair(draws: &Vec<Draw>) -> Vec<(u8,u8, u32)> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `most_common_triplets`
[INFO] [stderr]   --> src/stats.rs:25:4
[INFO] [stderr]    |
[INFO] [stderr] 25 | fn most_common_triplets(draws: &Vec<Draw>) -> Vec<(u8, u8, u8, u32)> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `FrequencyStack`
[INFO] [stderr]  --> src/frequency_stack.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct FrequencyStack{
[INFO] [stderr]   |            ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `push`
[INFO] [stderr]  --> src/frequency_stack.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn push(&self){
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `pop`
[INFO] [stderr]   --> src/frequency_stack.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn pop(&self){
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `draws`
[INFO] [stderr]   --> src/main.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let draws = load_csv(csv_path);
[INFO] [stderr]    |         ^^^^^ help: consider prefixing with an underscore: `_draws`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `draws`
[INFO] [stderr]  --> src/stats.rs:5:14
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn frequency(draws: &Vec<Draw>) -> Vec<DrawSummary> {
[INFO] [stderr]   |              ^^^^^ help: consider prefixing with an underscore: `_draws`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `draws`
[INFO] [stderr]  --> src/stats.rs:9:25
[INFO] [stderr]   |
[INFO] [stderr] 9 | fn most_overdue_numbers(draws: &Vec<Draw>) -> Vec<DrawSummary> {
[INFO] [stderr]   |                         ^^^^^ help: consider prefixing with an underscore: `_draws`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `draws`
[INFO] [stderr]   --> src/stats.rs:13:24
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn most_common_numbers(draws: &Vec<Draw>) -> Vec<DrawSummary> {
[INFO] [stderr]    |                        ^^^^^ help: consider prefixing with an underscore: `_draws`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `draws`
[INFO] [stderr]   --> src/stats.rs:17:31
[INFO] [stderr]    |
[INFO] [stderr] 17 | fn least_often_picked_numbers(draws: &Vec<Draw>) -> Vec<DrawSummary> {
[INFO] [stderr]    |                               ^^^^^ help: consider prefixing with an underscore: `_draws`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `draws`
[INFO] [stderr]   --> src/stats.rs:21:21
[INFO] [stderr]    |
[INFO] [stderr] 21 | fn most_common_pair(draws: &Vec<Draw>) -> Vec<(u8,u8, u32)> {
[INFO] [stderr]    |                     ^^^^^ help: consider prefixing with an underscore: `_draws`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `draws`
[INFO] [stderr]   --> src/stats.rs:25:25
[INFO] [stderr]    |
[INFO] [stderr] 25 | fn most_common_triplets(draws: &Vec<Draw>) -> Vec<(u8, u8, u8, u32)> {
[INFO] [stderr]    |                         ^^^^^ help: consider prefixing with an underscore: `_draws`
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `DrawSummary`
[INFO] [stderr]  --> src/stats.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | type DrawSummary = (u8, u32);
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `frequency`
[INFO] [stderr]  --> src/stats.rs:5:4
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn frequency(draws: &Vec<Draw>) -> Vec<DrawSummary> {
[INFO] [stderr]   |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `most_overdue_numbers`
[INFO] [stderr]  --> src/stats.rs:9:4
[INFO] [stderr]   |
[INFO] [stderr] 9 | fn most_overdue_numbers(draws: &Vec<Draw>) -> Vec<DrawSummary> {
[INFO] [stderr]   |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `most_common_numbers`
[INFO] [stderr]   --> src/stats.rs:13:4
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn most_common_numbers(draws: &Vec<Draw>) -> Vec<DrawSummary> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `least_often_picked_numbers`
[INFO] [stderr]   --> src/stats.rs:17:4
[INFO] [stderr]    |
[INFO] [stderr] 17 | fn least_often_picked_numbers(draws: &Vec<Draw>) -> Vec<DrawSummary> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `most_common_pair`
[INFO] [stderr]   --> src/stats.rs:21:4
[INFO] [stderr]    |
[INFO] [stderr] 21 | fn most_common_pair(draws: &Vec<Draw>) -> Vec<(u8,u8, u32)> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `most_common_triplets`
[INFO] [stderr]   --> src/stats.rs:25:4
[INFO] [stderr]    |
[INFO] [stderr] 25 | fn most_common_triplets(draws: &Vec<Draw>) -> Vec<(u8, u8, u8, u32)> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `FrequencyStack`
[INFO] [stderr]  --> src/frequency_stack.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct FrequencyStack{
[INFO] [stderr]   |            ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `push`
[INFO] [stderr]  --> src/frequency_stack.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn push(&self){
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `pop`
[INFO] [stderr]   --> src/frequency_stack.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn pop(&self){
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `"docker" "inspect" "8329bae7ac887ea8d554ef98af61990c2606785b587621cd640c86957a17bf17"`
[INFO] running `"docker" "rm" "-f" "8329bae7ac887ea8d554ef98af61990c2606785b587621cd640c86957a17bf17"`
[INFO] [stdout] 8329bae7ac887ea8d554ef98af61990c2606785b587621cd640c86957a17bf17