Dec 11 13:17:06.863 INFO checking mplanchard/combinations against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 13:17:06.863 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-1/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +3a75e80557a103497cffbcab395a2f37061a77ea-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 11 13:17:07.301 INFO [stdout] c4a2a424a7c8fd3311cb26090dacc8d39fd32a93a12b97218bd9cb6f3847d581
Dec 11 13:17:07.303 INFO running `"docker" "start" "-a" "c4a2a424a7c8fd3311cb26090dacc8d39fd32a93a12b97218bd9cb6f3847d581"`
Dec 11 13:17:09.359 INFO [stderr] usermod: no changes
Dec 11 13:17:09.458 INFO [stderr]     Checking combinations v0.1.0 (/source)
Dec 11 13:17:10.216 INFO [stderr] warning: unused import: `std::slice`
Dec 11 13:17:10.216 INFO [stderr]  --> src/main.rs:6:5
Dec 11 13:17:10.216 INFO [stderr]   |
Dec 11 13:17:10.216 INFO [stderr] 6 | use std::slice;
Dec 11 13:17:10.216 INFO [stderr]   |     ^^^^^^^^^^
Dec 11 13:17:10.216 INFO [stderr]   |
Dec 11 13:17:10.216 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 13:17:10.216 INFO [stderr] 
Dec 11 13:17:10.297 INFO [stderr] warning: unused import: `std::slice`
Dec 11 13:17:10.297 INFO [stderr]  --> src/main.rs:6:5
Dec 11 13:17:10.297 INFO [stderr]   |
Dec 11 13:17:10.297 INFO [stderr] 6 | use std::slice;
Dec 11 13:17:10.297 INFO [stderr]   |     ^^^^^^^^^^
Dec 11 13:17:10.297 INFO [stderr]   |
Dec 11 13:17:10.297 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 13:17:10.297 INFO [stderr] 
Dec 11 13:17:10.369 INFO [stderr] warning: unused variable: `slice_one`
Dec 11 13:17:10.369 INFO [stderr]    --> src/main.rs:123:9
Dec 11 13:17:10.369 INFO [stderr]     |
Dec 11 13:17:10.369 INFO [stderr] 123 |     let slice_one: &[i32] = &[1, 2, 3, 4, 5];
Dec 11 13:17:10.369 INFO [stderr]     |         ^^^^^^^^^ help: consider using `_slice_one` instead
Dec 11 13:17:10.369 INFO [stderr]     |
Dec 11 13:17:10.376 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 11 13:17:10.376 INFO [stderr] 
Dec 11 13:17:10.392 INFO [stderr] warning: unused variable: `slice_two`
Dec 11 13:17:10.392 INFO [stderr]    --> src/main.rs:124:9
Dec 11 13:17:10.392 INFO [stderr]     |
Dec 11 13:17:10.392 INFO [stderr] 124 |     let slice_two: &[i32] = &[3, 4];
Dec 11 13:17:10.392 INFO [stderr]     |         ^^^^^^^^^ help: consider using `_slice_two` instead
Dec 11 13:17:10.392 INFO [stderr] 
Dec 11 13:17:10.440 INFO [stderr] warning: function is never used: `num_combinations`
Dec 11 13:17:10.440 INFO [stderr]   --> src/main.rs:19:1
Dec 11 13:17:10.440 INFO [stderr]    |
Dec 11 13:17:10.440 INFO [stderr] 19 | fn num_combinations(num_items: u64, take: u64) -> BigUint {
Dec 11 13:17:10.440 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:17:10.440 INFO [stderr] 
Dec 11 13:17:10.440 INFO [stderr] warning: function is never used: `print`
Dec 11 13:17:10.440 INFO [stderr]   --> src/main.rs:62:1
Dec 11 13:17:10.440 INFO [stderr]    |
Dec 11 13:17:10.440 INFO [stderr] 62 | fn print<T: Iterator + std::fmt::Debug>(thing: T) -> T{
Dec 11 13:17:10.440 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:17:10.440 INFO [stderr] 
Dec 11 13:17:10.460 INFO [stderr] warning: unused variable: `slice_one`
Dec 11 13:17:10.461 INFO [stderr]    --> src/main.rs:123:9
Dec 11 13:17:10.461 INFO [stderr]     |
Dec 11 13:17:10.461 INFO [stderr] 123 |     let slice_one: &[i32] = &[1, 2, 3, 4, 5];
Dec 11 13:17:10.461 INFO [stderr]     |         ^^^^^^^^^ help: consider using `_slice_one` instead
Dec 11 13:17:10.462 INFO [stderr]     |
Dec 11 13:17:10.462 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 11 13:17:10.462 INFO [stderr] 
Dec 11 13:17:10.462 INFO [stderr] warning: unused variable: `slice_two`
Dec 11 13:17:10.462 INFO [stderr]    --> src/main.rs:124:9
Dec 11 13:17:10.462 INFO [stderr]     |
Dec 11 13:17:10.462 INFO [stderr] 124 |     let slice_two: &[i32] = &[3, 4];
Dec 11 13:17:10.462 INFO [stderr]     |         ^^^^^^^^^ help: consider using `_slice_two` instead
Dec 11 13:17:10.462 INFO [stderr] 
Dec 11 13:17:10.493 INFO [stderr] warning: function is never used: `num_combinations`
Dec 11 13:17:10.493 INFO [stderr]   --> src/main.rs:19:1
Dec 11 13:17:10.493 INFO [stderr]    |
Dec 11 13:17:10.493 INFO [stderr] 19 | fn num_combinations(num_items: u64, take: u64) -> BigUint {
Dec 11 13:17:10.493 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:17:10.493 INFO [stderr] 
Dec 11 13:17:10.493 INFO [stderr] warning: function is never used: `print`
Dec 11 13:17:10.494 INFO [stderr]   --> src/main.rs:62:1
Dec 11 13:17:10.494 INFO [stderr]    |
Dec 11 13:17:10.494 INFO [stderr] 62 | fn print<T: Iterator + std::fmt::Debug>(thing: T) -> T{
Dec 11 13:17:10.494 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:17:10.494 INFO [stderr] 
Dec 11 13:17:10.508 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.12s
Dec 11 13:17:10.511 INFO [stderr] su: No module specific data is present
Dec 11 13:17:11.685 INFO running `"docker" "inspect" "c4a2a424a7c8fd3311cb26090dacc8d39fd32a93a12b97218bd9cb6f3847d581"`
Dec 11 13:17:11.966 INFO running `"docker" "rm" "-f" "c4a2a424a7c8fd3311cb26090dacc8d39fd32a93a12b97218bd9cb6f3847d581"`
Dec 11 13:17:12.280 INFO [stdout] c4a2a424a7c8fd3311cb26090dacc8d39fd32a93a12b97218bd9cb6f3847d581