[INFO] cloning repository https://github.com/quody/mahjong-combinations
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/quody/mahjong-combinations" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquody%2Fmahjong-combinations", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquody%2Fmahjong-combinations'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 139636f9af7a02e5b7fb082b834ea2b21c5fc719
[INFO] checking quody/mahjong-combinations against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquody%2Fmahjong-combinations" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/quody/mahjong-combinations on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/quody/mahjong-combinations
[INFO] finished tweaking git repo https://github.com/quody/mahjong-combinations
[INFO] tweaked toml for git repo https://github.com/quody/mahjong-combinations written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/quody/mahjong-combinations already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded enum-iterator-derive v0.6.0
[INFO] [stderr]   Downloaded enum-iterator v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 130436207ffad2d9d8e23b57dc7dc4c4b9397e9e287f53c528457a050b804651
[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" "130436207ffad2d9d8e23b57dc7dc4c4b9397e9e287f53c528457a050b804651", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "130436207ffad2d9d8e23b57dc7dc4c4b9397e9e287f53c528457a050b804651", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "130436207ffad2d9d8e23b57dc7dc4c4b9397e9e287f53c528457a050b804651", kill_on_drop: false }`
[INFO] [stdout] 130436207ffad2d9d8e23b57dc7dc4c4b9397e9e287f53c528457a050b804651
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 16440d093cb7b76802f1f210f519d20b25a9ea62f6ba957e9e17d7d5dd932105
[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" "16440d093cb7b76802f1f210f519d20b25a9ea62f6ba957e9e17d7d5dd932105", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]    Compiling enum-iterator-derive v0.6.0
[INFO] [stderr]     Checking enum-iterator v0.6.0
[INFO] [stderr]     Checking mahjong-combinations v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::partition_combinations::PartitionCombinable`
[INFO] [stdout]  --> src/tests.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::partition_combinations::PartitionCombinable;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `test::Bencher`
[INFO] [stdout]  --> src/tests.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use test::Bencher;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `get_shanten`
[INFO] [stdout]   --> src/main.rs:14:21
[INFO] [stdout]    |
[INFO] [stdout] 14 | use mahjong_logic::{get_shanten, complete_set, tiles_to_chance};
[INFO] [stdout]    |                     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `get_shanten`
[INFO] [stdout]   --> src/main.rs:14:21
[INFO] [stdout]    |
[INFO] [stdout] 14 | use mahjong_logic::{get_shanten, complete_set, tiles_to_chance};
[INFO] [stdout]    |                     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/mahjong_logic.rs:92:9
[INFO] [stdout]    |
[INFO] [stdout] 92 |     for i in 0..*v
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/mahjong_logic.rs:92:9
[INFO] [stdout]    |
[INFO] [stdout] 92 |     for i in 0..*v
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_shanten`
[INFO] [stdout]  --> src/mahjong_logic.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn get_shanten(hand: &Vec<Tiles>)
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `shanten_helper`
[INFO] [stdout]   --> src/mahjong_logic.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn shanten_helper(set: &Vec<Tiles>) -> u32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_shanten`
[INFO] [stdout]  --> src/mahjong_logic.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn get_shanten(hand: &Vec<Tiles>)
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `shanten_helper`
[INFO] [stdout]   --> src/mahjong_logic.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn shanten_helper(set: &Vec<Tiles>) -> u32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.83s
[INFO] running `Command { std: "docker" "inspect" "16440d093cb7b76802f1f210f519d20b25a9ea62f6ba957e9e17d7d5dd932105", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16440d093cb7b76802f1f210f519d20b25a9ea62f6ba957e9e17d7d5dd932105", kill_on_drop: false }`
[INFO] [stdout] 16440d093cb7b76802f1f210f519d20b25a9ea62f6ba957e9e17d7d5dd932105