Dec 04 09:32:59.551 INFO checking stephen-lazaro/reuler against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 09:32:59.551 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-4/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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 04 09:33:00.108 INFO [stdout] ed0575de05ddd1fbb40b69c08aea29f0a94bdab7827474fdc5527b179ac7c65d
Dec 04 09:33:00.115 INFO running `"docker" "start" "-a" "ed0575de05ddd1fbb40b69c08aea29f0a94bdab7827474fdc5527b179ac7c65d"`
Dec 04 09:33:02.062 INFO [stderr] usermod: no changes
Dec 04 09:33:02.155 INFO [stderr]     Checking memchr v0.1.11
Dec 04 09:33:02.155 INFO [stderr]     Checking itertools v0.7.3
Dec 04 09:33:02.183 INFO [stderr]     Checking thread-id v2.0.0
Dec 04 09:33:02.707 INFO [stderr]     Checking thread_local v0.2.7
Dec 04 09:33:03.043 INFO [stderr]     Checking aho-corasick v0.5.3
Dec 04 09:33:04.195 INFO [stderr]     Checking regex v0.1.80
Dec 04 09:33:05.913 INFO [stderr]     Checking reuler v0.1.0 (/source)
Dec 04 09:33:06.054 INFO [stderr] warning: unknown lint: `unused_import`
Dec 04 09:33:06.054 INFO [stderr]  --> src/lib.rs:5:9
Dec 04 09:33:06.054 INFO [stderr]   |
Dec 04 09:33:06.054 INFO [stderr] 5 | #[allow(unused_import)]
Dec 04 09:33:06.054 INFO [stderr]   |         ^^^^^^^^^^^^^
Dec 04 09:33:06.054 INFO [stderr]   |
Dec 04 09:33:06.054 INFO [stderr]   = note: #[warn(unknown_lints)] on by default
Dec 04 09:33:06.054 INFO [stderr] 
Dec 04 09:33:06.259 INFO [stderr] warning: unused `#[macro_use]` import
Dec 04 09:33:06.259 INFO [stderr]  --> src/lib.rs:3:1
Dec 04 09:33:06.259 INFO [stderr]   |
Dec 04 09:33:06.259 INFO [stderr] 3 | #[macro_use] extern crate itertools;
Dec 04 09:33:06.259 INFO [stderr]   | ^^^^^^^^^^^^
Dec 04 09:33:06.259 INFO [stderr]   |
Dec 04 09:33:06.259 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 09:33:06.259 INFO [stderr] 
Dec 04 09:33:06.551 INFO [stderr] warning: value assigned to `triangular_num` is never read
Dec 04 09:33:06.551 INFO [stderr]  --> src/eulers/twelve.rs:6:13
Dec 04 09:33:06.551 INFO [stderr]   |
Dec 04 09:33:06.551 INFO [stderr] 6 |     let mut triangular_num = Some(6);
Dec 04 09:33:06.551 INFO [stderr]   |             ^^^^^^^^^^^^^^
Dec 04 09:33:06.551 INFO [stderr]   |
Dec 04 09:33:06.551 INFO [stderr]   = note: #[warn(unused_assignments)] on by default
Dec 04 09:33:06.551 INFO [stderr] 
Dec 04 09:33:06.639 INFO [stderr] warning: the feature `inclusive_range_syntax` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 04 09:33:06.639 INFO [stderr]  --> src/lib.rs:1:12
Dec 04 09:33:06.639 INFO [stderr]   |
Dec 04 09:33:06.639 INFO [stderr] 1 | #![feature(inclusive_range_syntax)]
Dec 04 09:33:06.639 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:33:06.639 INFO [stderr]   |
Dec 04 09:33:06.639 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 04 09:33:06.639 INFO [stderr] 
Dec 04 09:33:06.640 INFO [stderr] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
Dec 04 09:33:06.640 INFO [stderr]  --> src/lib.rs:2:12
Dec 04 09:33:06.640 INFO [stderr]   |
Dec 04 09:33:06.640 INFO [stderr] 2 | #![feature(iterator_step_by)]
Dec 04 09:33:06.640 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Dec 04 09:33:06.640 INFO [stderr] 
Dec 04 09:33:06.829 INFO [stderr] warning: unknown lint: `unused_import`
Dec 04 09:33:06.829 INFO [stderr]  --> src/main.rs:5:9
Dec 04 09:33:06.830 INFO [stderr]   |
Dec 04 09:33:06.830 INFO [stderr] 5 | #[allow(unused_import)]
Dec 04 09:33:06.830 INFO [stderr]   |         ^^^^^^^^^^^^^
Dec 04 09:33:06.831 INFO [stderr]   |
Dec 04 09:33:06.831 INFO [stderr]   = note: #[warn(unknown_lints)] on by default
Dec 04 09:33:06.831 INFO [stderr] 
Dec 04 09:33:07.063 INFO [stderr] warning: unused `#[macro_use]` import
Dec 04 09:33:07.063 INFO [stderr]  --> src/main.rs:3:1
Dec 04 09:33:07.064 INFO [stderr]   |
Dec 04 09:33:07.064 INFO [stderr] 3 | #[macro_use] extern crate itertools;
Dec 04 09:33:07.064 INFO [stderr]   | ^^^^^^^^^^^^
Dec 04 09:33:07.064 INFO [stderr]   |
Dec 04 09:33:07.065 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 09:33:07.065 INFO [stderr] 
Dec 04 09:33:07.296 INFO [stderr]     Checking env_logger v0.3.5
Dec 04 09:33:07.539 INFO [stderr] warning: value assigned to `triangular_num` is never read
Dec 04 09:33:07.539 INFO [stderr]  --> src/eulers/twelve.rs:6:13
Dec 04 09:33:07.540 INFO [stderr]   |
Dec 04 09:33:07.540 INFO [stderr] 6 |     let mut triangular_num = Some(6);
Dec 04 09:33:07.540 INFO [stderr]   |             ^^^^^^^^^^^^^^
Dec 04 09:33:07.540 INFO [stderr]   |
Dec 04 09:33:07.541 INFO [stderr]   = note: #[warn(unused_assignments)] on by default
Dec 04 09:33:07.541 INFO [stderr] 
Dec 04 09:33:07.640 INFO [stderr] warning: the feature `inclusive_range_syntax` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 04 09:33:07.641 INFO [stderr]  --> src/main.rs:1:12
Dec 04 09:33:07.641 INFO [stderr]   |
Dec 04 09:33:07.641 INFO [stderr] 1 | #![feature(inclusive_range_syntax)]
Dec 04 09:33:07.641 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:33:07.642 INFO [stderr]   |
Dec 04 09:33:07.642 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 04 09:33:07.642 INFO [stderr] 
Dec 04 09:33:07.642 INFO [stderr] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
Dec 04 09:33:07.643 INFO [stderr]  --> src/main.rs:2:12
Dec 04 09:33:07.643 INFO [stderr]   |
Dec 04 09:33:07.643 INFO [stderr] 2 | #![feature(iterator_step_by)]
Dec 04 09:33:07.643 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Dec 04 09:33:07.644 INFO [stderr] 
Dec 04 09:33:08.040 INFO [stderr]     Checking quickcheck v0.3.2
Dec 04 09:33:09.519 INFO [stderr] warning: unknown lint: `unused_import`
Dec 04 09:33:09.519 INFO [stderr]  --> src/lib.rs:5:9
Dec 04 09:33:09.519 INFO [stderr]   |
Dec 04 09:33:09.519 INFO [stderr] 5 | #[allow(unused_import)]
Dec 04 09:33:09.519 INFO [stderr]   |         ^^^^^^^^^^^^^
Dec 04 09:33:09.519 INFO [stderr]   |
Dec 04 09:33:09.519 INFO [stderr]   = note: #[warn(unknown_lints)] on by default
Dec 04 09:33:09.519 INFO [stderr] 
Dec 04 09:33:09.563 INFO [stderr] warning: unknown lint: `unused_import`
Dec 04 09:33:09.563 INFO [stderr]  --> src/main.rs:5:9
Dec 04 09:33:09.563 INFO [stderr]   |
Dec 04 09:33:09.564 INFO [stderr] 5 | #[allow(unused_import)]
Dec 04 09:33:09.564 INFO [stderr]   |         ^^^^^^^^^^^^^
Dec 04 09:33:09.564 INFO [stderr]   |
Dec 04 09:33:09.564 INFO [stderr]   = note: #[warn(unknown_lints)] on by default
Dec 04 09:33:09.565 INFO [stderr] 
Dec 04 09:33:09.886 INFO [stderr] warning: unused `#[macro_use]` import
Dec 04 09:33:09.886 INFO [stderr]  --> src/lib.rs:3:1
Dec 04 09:33:09.886 INFO [stderr]   |
Dec 04 09:33:09.887 INFO [stderr] 3 | #[macro_use] extern crate itertools;
Dec 04 09:33:09.887 INFO [stderr]   | ^^^^^^^^^^^^
Dec 04 09:33:09.887 INFO [stderr]   |
Dec 04 09:33:09.888 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 09:33:09.888 INFO [stderr] 
Dec 04 09:33:09.907 INFO [stderr] warning: unused `#[macro_use]` import
Dec 04 09:33:09.907 INFO [stderr]  --> src/main.rs:3:1
Dec 04 09:33:09.907 INFO [stderr]   |
Dec 04 09:33:09.908 INFO [stderr] 3 | #[macro_use] extern crate itertools;
Dec 04 09:33:09.908 INFO [stderr]   | ^^^^^^^^^^^^
Dec 04 09:33:09.908 INFO [stderr]   |
Dec 04 09:33:09.908 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 09:33:09.909 INFO [stderr] 
Dec 04 09:33:10.179 INFO [stderr] warning: value assigned to `triangular_num` is never read
Dec 04 09:33:10.179 INFO [stderr]  --> src/eulers/twelve.rs:6:13
Dec 04 09:33:10.179 INFO [stderr]   |
Dec 04 09:33:10.179 INFO [stderr] 6 |     let mut triangular_num = Some(6);
Dec 04 09:33:10.179 INFO [stderr]   |             ^^^^^^^^^^^^^^
Dec 04 09:33:10.180 INFO [stderr]   |
Dec 04 09:33:10.180 INFO [stderr]   = note: #[warn(unused_assignments)] on by default
Dec 04 09:33:10.180 INFO [stderr] 
Dec 04 09:33:10.284 INFO [stderr] warning: value assigned to `triangular_num` is never read
Dec 04 09:33:10.285 INFO [stderr]  --> src/eulers/twelve.rs:6:13
Dec 04 09:33:10.285 INFO [stderr]   |
Dec 04 09:33:10.285 INFO [stderr] 6 |     let mut triangular_num = Some(6);
Dec 04 09:33:10.285 INFO [stderr]   |             ^^^^^^^^^^^^^^
Dec 04 09:33:10.285 INFO [stderr]   |
Dec 04 09:33:10.285 INFO [stderr]   = note: #[warn(unused_assignments)] on by default
Dec 04 09:33:10.285 INFO [stderr] 
Dec 04 09:33:10.299 INFO [stderr] warning: struct is never constructed: `Valid`
Dec 04 09:33:10.299 INFO [stderr]   --> src/lib.rs:15:5
Dec 04 09:33:10.299 INFO [stderr]    |
Dec 04 09:33:10.299 INFO [stderr] 15 |     pub struct Valid <A : Testable> (A);
Dec 04 09:33:10.299 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:33:10.299 INFO [stderr]    |
Dec 04 09:33:10.303 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 04 09:33:10.303 INFO [stderr] 
Dec 04 09:33:10.303 INFO [stderr] warning: struct is never constructed: `Invalid`
Dec 04 09:33:10.303 INFO [stderr]   --> src/lib.rs:16:5
Dec 04 09:33:10.303 INFO [stderr]    |
Dec 04 09:33:10.303 INFO [stderr] 16 |     pub struct Invalid <A : Testable> (A);
Dec 04 09:33:10.303 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:33:10.303 INFO [stderr] 
Dec 04 09:33:10.303 INFO [stderr] warning: the feature `inclusive_range_syntax` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 04 09:33:10.303 INFO [stderr]  --> src/lib.rs:1:12
Dec 04 09:33:10.303 INFO [stderr]   |
Dec 04 09:33:10.303 INFO [stderr] 1 | #![feature(inclusive_range_syntax)]
Dec 04 09:33:10.303 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:33:10.303 INFO [stderr]   |
Dec 04 09:33:10.303 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 04 09:33:10.303 INFO [stderr] 
Dec 04 09:33:10.304 INFO [stderr] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
Dec 04 09:33:10.304 INFO [stderr]  --> src/lib.rs:2:12
Dec 04 09:33:10.304 INFO [stderr]   |
Dec 04 09:33:10.304 INFO [stderr] 2 | #![feature(iterator_step_by)]
Dec 04 09:33:10.304 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Dec 04 09:33:10.304 INFO [stderr] 
Dec 04 09:33:10.411 INFO [stderr] warning: the feature `inclusive_range_syntax` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 04 09:33:10.411 INFO [stderr]  --> src/main.rs:1:12
Dec 04 09:33:10.411 INFO [stderr]   |
Dec 04 09:33:10.411 INFO [stderr] 1 | #![feature(inclusive_range_syntax)]
Dec 04 09:33:10.411 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:33:10.411 INFO [stderr]   |
Dec 04 09:33:10.411 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 04 09:33:10.411 INFO [stderr] 
Dec 04 09:33:10.411 INFO [stderr] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
Dec 04 09:33:10.411 INFO [stderr]  --> src/main.rs:2:12
Dec 04 09:33:10.411 INFO [stderr]   |
Dec 04 09:33:10.411 INFO [stderr] 2 | #![feature(iterator_step_by)]
Dec 04 09:33:10.411 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Dec 04 09:33:10.411 INFO [stderr] 
Dec 04 09:33:10.462 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.37s
Dec 04 09:33:10.467 INFO [stderr] su: No module specific data is present
Dec 04 09:33:11.780 INFO running `"docker" "inspect" "ed0575de05ddd1fbb40b69c08aea29f0a94bdab7827474fdc5527b179ac7c65d"`
Dec 04 09:33:12.145 INFO running `"docker" "rm" "-f" "ed0575de05ddd1fbb40b69c08aea29f0a94bdab7827474fdc5527b179ac7c65d"`
Dec 04 09:33:12.427 INFO [stdout] ed0575de05ddd1fbb40b69c08aea29f0a94bdab7827474fdc5527b179ac7c65d