[INFO] cloning repository https://github.com/Feelx234/rust_subgroup_discovery
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Feelx234/rust_subgroup_discovery" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFeelx234%2Frust_subgroup_discovery"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFeelx234%2Frust_subgroup_discovery'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2bbc95d4822a8baeb23aeb17bbf0d22998e89c43
[INFO] checking Feelx234/rust_subgroup_discovery against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFeelx234%2Frust_subgroup_discovery" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Feelx234/rust_subgroup_discovery on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Feelx234/rust_subgroup_discovery
[INFO] finished tweaking git repo https://github.com/Feelx234/rust_subgroup_discovery
[INFO] tweaked toml for git repo https://github.com/Feelx234/rust_subgroup_discovery written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/Feelx234/rust_subgroup_discovery already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"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=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" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] a113fe46dd281896080ba24095dc59d9d1c912df20f4da4153269e320e8e0d7c
[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" "a113fe46dd281896080ba24095dc59d9d1c912df20f4da4153269e320e8e0d7c"`
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]    Compiling ndarray v0.13.0
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]     Checking bit-vec v0.5.1
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking crc32fast v1.2.0
[INFO] [stderr]     Checking matrixmultiply v0.2.3
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking flate2 v1.0.13
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling num-bigint v0.2.3
[INFO] [stderr]     Checking zip v0.5.3
[INFO] [stderr]     Checking ordered-float v1.0.2
[INFO] [stderr]    Compiling pest_derive v1.0.8
[INFO] [stderr]     Checking py_literal v0.2.1
[INFO] [stderr]     Checking ndarray-npy v0.5.0
[INFO] [stderr]     Checking hello_cargo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: type `target_type` should have an upper camel case name
[INFO] [stderr]   --> src/main.rs:31:10
[INFO] [stderr]    |
[INFO] [stderr] 31 |     type target_type = u16;
[INFO] [stderr]    |          ^^^^^^^^^^^ help: convert the identifier to upper camel case: `TargetType`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `d`
[INFO] [stderr]    --> src/main.rs:196:13
[INFO] [stderr]     |
[INFO] [stderr] 196 |         for d in 1..task.depth {
[INFO] [stderr]     |             ^ help: if this is intentional, prefix it with an underscore: `_d`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `qf`
[INFO] [stderr]    --> src/main.rs:188:12
[INFO] [stderr]     |
[INFO] [stderr] 188 | fn Apriori(qf : & impl QualityFunction,
[INFO] [stderr]     |            ^^ help: if this is intentional, prefix it with an underscore: `_qf`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `result`
[INFO] [stderr]    --> src/main.rs:190:5
[INFO] [stderr]     |
[INFO] [stderr] 190 |     result: &mut BTreeMap<OrderedFloat<f64>, Vec<usize>>) {
[INFO] [stderr]     |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stderr] 
[INFO] [stderr] warning: type `target_type` should have an upper camel case name
[INFO] [stderr]   --> src/main.rs:31:10
[INFO] [stderr]    |
[INFO] [stderr] 31 |     type target_type = u16;
[INFO] [stderr]    |          ^^^^^^^^^^^ help: convert the identifier to upper camel case: `TargetType`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `Apriori`
[INFO] [stderr]    --> src/main.rs:188:4
[INFO] [stderr]     |
[INFO] [stderr] 188 | fn Apriori(qf : & impl QualityFunction,
[INFO] [stderr]     |    ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `DFS` should have a snake case name
[INFO] [stderr]    --> src/main.rs:144:4
[INFO] [stderr]     |
[INFO] [stderr] 144 | fn DFS(prefix : &mut Vec<usize> ,
[INFO] [stderr]     |    ^^^ help: convert the identifier to snake case: `dfs`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `Apriori` should have a snake case name
[INFO] [stderr]    --> src/main.rs:188:4
[INFO] [stderr]     |
[INFO] [stderr] 188 | fn Apriori(qf : & impl QualityFunction,
[INFO] [stderr]     |    ^^^^^^^ help: convert the identifier to snake case: `apriori`
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `d`
[INFO] [stderr]    --> src/main.rs:196:13
[INFO] [stderr]     |
[INFO] [stderr] 196 |         for d in 1..task.depth {
[INFO] [stderr]     |             ^ help: if this is intentional, prefix it with an underscore: `_d`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `qf`
[INFO] [stderr]    --> src/main.rs:188:12
[INFO] [stderr]     |
[INFO] [stderr] 188 | fn Apriori(qf : & impl QualityFunction,
[INFO] [stderr]     |            ^^ help: if this is intentional, prefix it with an underscore: `_qf`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `result`
[INFO] [stderr]    --> src/main.rs:190:5
[INFO] [stderr]     |
[INFO] [stderr] 190 |     result: &mut BTreeMap<OrderedFloat<f64>, Vec<usize>>) {
[INFO] [stderr]     |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `Apriori`
[INFO] [stderr]    --> src/main.rs:188:4
[INFO] [stderr]     |
[INFO] [stderr] 188 | fn Apriori(qf : & impl QualityFunction,
[INFO] [stderr]     |    ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `DFS` should have a snake case name
[INFO] [stderr]    --> src/main.rs:144:4
[INFO] [stderr]     |
[INFO] [stderr] 144 | fn DFS(prefix : &mut Vec<usize> ,
[INFO] [stderr]     |    ^^^ help: convert the identifier to snake case: `dfs`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `Apriori` should have a snake case name
[INFO] [stderr]    --> src/main.rs:188:4
[INFO] [stderr]     |
[INFO] [stderr] 188 | fn Apriori(qf : & impl QualityFunction,
[INFO] [stderr]     |    ^^^^^^^ help: convert the identifier to snake case: `apriori`
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.58s
[INFO] running `"docker" "inspect" "a113fe46dd281896080ba24095dc59d9d1c912df20f4da4153269e320e8e0d7c"`
[INFO] running `"docker" "rm" "-f" "a113fe46dd281896080ba24095dc59d9d1c912df20f4da4153269e320e8e0d7c"`
[INFO] [stdout] a113fe46dd281896080ba24095dc59d9d1c912df20f4da4153269e320e8e0d7c