[INFO] updating cached repository https://github.com/quody/mahjong-combinations
[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] 139636f9af7a02e5b7fb082b834ea2b21c5fc719
[INFO] checking quody/mahjong-combinations against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquody%2Fmahjong-combinations" "/workspace/builds/worker-8/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/quody/mahjong-combinations on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-8/source/Cargo.toml
[INFO] crate git repo https://github.com/quody/mahjong-combinations already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 871ad615bb3e1d19a45b60595ff4e19b4b7a91e0610ab004617361de61f8d1db
[INFO] running `"docker" "start" "-a" "871ad615bb3e1d19a45b60595ff4e19b4b7a91e0610ab004617361de61f8d1db"`
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]    Compiling quote v1.0.3
[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] [stderr] warning: unused import: `get_shanten`
[INFO] [stderr]   --> src/main.rs:14:21
[INFO] [stderr]    |
[INFO] [stderr] 14 | use mahjong_logic::{get_shanten, complete_set, tiles_to_chance};
[INFO] [stderr]    |                     ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::partition_combinations::PartitionCombinable`
[INFO] [stderr]  --> src/tests.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::partition_combinations::PartitionCombinable;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `test::Bencher`
[INFO] [stderr]  --> src/tests.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use test::Bencher;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `get_shanten`
[INFO] [stderr]   --> src/main.rs:14:21
[INFO] [stderr]    |
[INFO] [stderr] 14 | use mahjong_logic::{get_shanten, complete_set, tiles_to_chance};
[INFO] [stderr]    |                     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/mahjong_logic.rs:92:9
[INFO] [stderr]    |
[INFO] [stderr] 92 |     for i in 0..*v
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/mahjong_logic.rs:92:9
[INFO] [stderr]    |
[INFO] [stderr] 92 |     for i in 0..*v
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_shanten`
[INFO] [stderr]  --> src/mahjong_logic.rs:8:8
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub fn get_shanten(hand: &Vec<Tiles>)
[INFO] [stderr]   |        ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `shanten_helper`
[INFO] [stderr]   --> src/mahjong_logic.rs:38:4
[INFO] [stderr]    |
[INFO] [stderr] 38 | fn shanten_helper(set: &Vec<Tiles>) -> u32 {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_shanten`
[INFO] [stderr]  --> src/mahjong_logic.rs:8:8
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub fn get_shanten(hand: &Vec<Tiles>)
[INFO] [stderr]   |        ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `shanten_helper`
[INFO] [stderr]   --> src/mahjong_logic.rs:38:4
[INFO] [stderr]    |
[INFO] [stderr] 38 | fn shanten_helper(set: &Vec<Tiles>) -> u32 {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.44s
[INFO] running `"docker" "inspect" "871ad615bb3e1d19a45b60595ff4e19b4b7a91e0610ab004617361de61f8d1db"`
[INFO] running `"docker" "rm" "-f" "871ad615bb3e1d19a45b60595ff4e19b4b7a91e0610ab004617361de61f8d1db"`
[INFO] [stdout] 871ad615bb3e1d19a45b60595ff4e19b4b7a91e0610ab004617361de61f8d1db