Dec 04 09:32:47.313 INFO checking stephen-lazaro/reuler against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 09:32:47.313 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-7/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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 09:32:47.836 INFO [stdout] d62cbb6ad5798a27cdd6af7329531071ce32df4e967368fa78ac2f7099583c8b
Dec 04 09:32:47.838 INFO running `"docker" "start" "-a" "d62cbb6ad5798a27cdd6af7329531071ce32df4e967368fa78ac2f7099583c8b"`
Dec 04 09:32:50.686 INFO [stderr] usermod: no changes
Dec 04 09:32:50.843 INFO [stderr]     Checking memchr v0.1.11
Dec 04 09:32:50.843 INFO [stderr]     Checking itertools v0.7.3
Dec 04 09:32:50.855 INFO [stderr]     Checking thread-id v2.0.0
Dec 04 09:32:51.460 INFO [stderr]     Checking thread_local v0.2.7
Dec 04 09:32:51.525 INFO [stderr]     Checking aho-corasick v0.5.3
Dec 04 09:32:53.089 INFO [stderr]     Checking regex v0.1.80
Dec 04 09:32:54.841 INFO [stderr]     Checking reuler v0.1.0 (/source)
Dec 04 09:32:55.011 INFO [stderr] warning: unknown lint: `unused_import`
Dec 04 09:32:55.011 INFO [stderr]  --> src/lib.rs:5:9
Dec 04 09:32:55.011 INFO [stderr]   |
Dec 04 09:32:55.012 INFO [stderr] 5 | #[allow(unused_import)]
Dec 04 09:32:55.012 INFO [stderr]   |         ^^^^^^^^^^^^^
Dec 04 09:32:55.012 INFO [stderr]   |
Dec 04 09:32:55.013 INFO [stderr]   = note: #[warn(unknown_lints)] on by default
Dec 04 09:32:55.013 INFO [stderr] 
Dec 04 09:32:55.243 INFO [stderr] warning: unused `#[macro_use]` import
Dec 04 09:32:55.243 INFO [stderr]  --> src/lib.rs:3:1
Dec 04 09:32:55.251 INFO [stderr]   |
Dec 04 09:32:55.251 INFO [stderr] 3 | #[macro_use] extern crate itertools;
Dec 04 09:32:55.251 INFO [stderr]   | ^^^^^^^^^^^^
Dec 04 09:32:55.252 INFO [stderr]   |
Dec 04 09:32:55.252 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 09:32:55.252 INFO [stderr] 
Dec 04 09:32:55.559 INFO [stderr] warning: value assigned to `triangular_num` is never read
Dec 04 09:32:55.559 INFO [stderr]  --> src/eulers/twelve.rs:6:13
Dec 04 09:32:55.559 INFO [stderr]   |
Dec 04 09:32:55.559 INFO [stderr] 6 |     let mut triangular_num = Some(6);
Dec 04 09:32:55.559 INFO [stderr]   |             ^^^^^^^^^^^^^^
Dec 04 09:32:55.559 INFO [stderr]   |
Dec 04 09:32:55.559 INFO [stderr]   = note: #[warn(unused_assignments)] on by default
Dec 04 09:32:55.559 INFO [stderr] 
Dec 04 09:32:55.625 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 09:32:55.625 INFO [stderr]  --> src/lib.rs:1:12
Dec 04 09:32:55.625 INFO [stderr]   |
Dec 04 09:32:55.625 INFO [stderr] 1 | #![feature(inclusive_range_syntax)]
Dec 04 09:32:55.625 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:32:55.626 INFO [stderr]   |
Dec 04 09:32:55.626 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 04 09:32:55.626 INFO [stderr] 
Dec 04 09:32:55.626 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 09:32:55.627 INFO [stderr]  --> src/lib.rs:2:12
Dec 04 09:32:55.627 INFO [stderr]   |
Dec 04 09:32:55.627 INFO [stderr] 2 | #![feature(iterator_step_by)]
Dec 04 09:32:55.627 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Dec 04 09:32:55.627 INFO [stderr] 
Dec 04 09:32:55.850 INFO [stderr] warning: unknown lint: `unused_import`
Dec 04 09:32:55.852 INFO [stderr]  --> src/main.rs:5:9
Dec 04 09:32:55.853 INFO [stderr]   |
Dec 04 09:32:55.853 INFO [stderr] 5 | #[allow(unused_import)]
Dec 04 09:32:55.853 INFO [stderr]   |         ^^^^^^^^^^^^^
Dec 04 09:32:55.853 INFO [stderr]   |
Dec 04 09:32:55.853 INFO [stderr]   = note: #[warn(unknown_lints)] on by default
Dec 04 09:32:55.853 INFO [stderr] 
Dec 04 09:32:56.075 INFO [stderr] warning: unused `#[macro_use]` import
Dec 04 09:32:56.075 INFO [stderr]  --> src/main.rs:3:1
Dec 04 09:32:56.075 INFO [stderr]   |
Dec 04 09:32:56.076 INFO [stderr] 3 | #[macro_use] extern crate itertools;
Dec 04 09:32:56.076 INFO [stderr]   | ^^^^^^^^^^^^
Dec 04 09:32:56.076 INFO [stderr]   |
Dec 04 09:32:56.077 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 09:32:56.077 INFO [stderr] 
Dec 04 09:32:56.371 INFO [stderr] warning: value assigned to `triangular_num` is never read
Dec 04 09:32:56.371 INFO [stderr]  --> src/eulers/twelve.rs:6:13
Dec 04 09:32:56.371 INFO [stderr]   |
Dec 04 09:32:56.372 INFO [stderr] 6 |     let mut triangular_num = Some(6);
Dec 04 09:32:56.372 INFO [stderr]   |             ^^^^^^^^^^^^^^
Dec 04 09:32:56.372 INFO [stderr]   |
Dec 04 09:32:56.372 INFO [stderr]   = note: #[warn(unused_assignments)] on by default
Dec 04 09:32:56.373 INFO [stderr] 
Dec 04 09:32:56.475 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 09:32:56.475 INFO [stderr]  --> src/main.rs:1:12
Dec 04 09:32:56.475 INFO [stderr]   |
Dec 04 09:32:56.476 INFO [stderr] 1 | #![feature(inclusive_range_syntax)]
Dec 04 09:32:56.476 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:32:56.476 INFO [stderr]   |
Dec 04 09:32:56.477 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 04 09:32:56.477 INFO [stderr] 
Dec 04 09:32:56.478 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 09:32:56.478 INFO [stderr]  --> src/main.rs:2:12
Dec 04 09:32:56.478 INFO [stderr]   |
Dec 04 09:32:56.479 INFO [stderr] 2 | #![feature(iterator_step_by)]
Dec 04 09:32:56.479 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Dec 04 09:32:56.479 INFO [stderr] 
Dec 04 09:32:56.949 INFO [stderr]     Checking env_logger v0.3.5
Dec 04 09:32:57.371 INFO [stderr]     Checking quickcheck v0.3.2
Dec 04 09:32:59.039 INFO [stderr] warning: unknown lint: `unused_import`
Dec 04 09:32:59.039 INFO [stderr]  --> src/lib.rs:5:9
Dec 04 09:32:59.039 INFO [stderr]   |
Dec 04 09:32:59.039 INFO [stderr] 5 | #[allow(unused_import)]
Dec 04 09:32:59.039 INFO [stderr]   |         ^^^^^^^^^^^^^
Dec 04 09:32:59.039 INFO [stderr]   |
Dec 04 09:32:59.039 INFO [stderr]   = note: #[warn(unknown_lints)] on by default
Dec 04 09:32:59.039 INFO [stderr] 
Dec 04 09:32:59.091 INFO [stderr] warning: unknown lint: `unused_import`
Dec 04 09:32:59.091 INFO [stderr]  --> src/main.rs:5:9
Dec 04 09:32:59.091 INFO [stderr]   |
Dec 04 09:32:59.095 INFO [stderr] 5 | #[allow(unused_import)]
Dec 04 09:32:59.095 INFO [stderr]   |         ^^^^^^^^^^^^^
Dec 04 09:32:59.095 INFO [stderr]   |
Dec 04 09:32:59.095 INFO [stderr]   = note: #[warn(unknown_lints)] on by default
Dec 04 09:32:59.095 INFO [stderr] 
Dec 04 09:32:59.395 INFO [stderr] warning: unused `#[macro_use]` import
Dec 04 09:32:59.395 INFO [stderr]  --> src/main.rs:3:1
Dec 04 09:32:59.395 INFO [stderr]   |
Dec 04 09:32:59.395 INFO [stderr] 3 | #[macro_use] extern crate itertools;
Dec 04 09:32:59.395 INFO [stderr]   | ^^^^^^^^^^^^
Dec 04 09:32:59.395 INFO [stderr]   |
Dec 04 09:32:59.395 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 09:32:59.395 INFO [stderr] 
Dec 04 09:32:59.583 INFO [stderr] warning: unused `#[macro_use]` import
Dec 04 09:32:59.583 INFO [stderr]  --> src/lib.rs:3:1
Dec 04 09:32:59.583 INFO [stderr]   |
Dec 04 09:32:59.583 INFO [stderr] 3 | #[macro_use] extern crate itertools;
Dec 04 09:32:59.583 INFO [stderr]   | ^^^^^^^^^^^^
Dec 04 09:32:59.583 INFO [stderr]   |
Dec 04 09:32:59.583 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 09:32:59.583 INFO [stderr] 
Dec 04 09:32:59.754 INFO [stderr] warning: value assigned to `triangular_num` is never read
Dec 04 09:32:59.755 INFO [stderr]  --> src/eulers/twelve.rs:6:13
Dec 04 09:32:59.755 INFO [stderr]   |
Dec 04 09:32:59.755 INFO [stderr] 6 |     let mut triangular_num = Some(6);
Dec 04 09:32:59.755 INFO [stderr]   |             ^^^^^^^^^^^^^^
Dec 04 09:32:59.755 INFO [stderr]   |
Dec 04 09:32:59.755 INFO [stderr]   = note: #[warn(unused_assignments)] on by default
Dec 04 09:32:59.755 INFO [stderr] 
Dec 04 09:32:59.771 INFO [stderr] warning: value assigned to `triangular_num` is never read
Dec 04 09:32:59.771 INFO [stderr]  --> src/eulers/twelve.rs:6:13
Dec 04 09:32:59.771 INFO [stderr]   |
Dec 04 09:32:59.771 INFO [stderr] 6 |     let mut triangular_num = Some(6);
Dec 04 09:32:59.771 INFO [stderr]   |             ^^^^^^^^^^^^^^
Dec 04 09:32:59.771 INFO [stderr]   |
Dec 04 09:32:59.771 INFO [stderr]   = note: #[warn(unused_assignments)] on by default
Dec 04 09:32:59.771 INFO [stderr] 
Dec 04 09:32:59.851 INFO [stderr] warning: struct is never constructed: `Valid`
Dec 04 09:32:59.851 INFO [stderr]   --> src/lib.rs:15:5
Dec 04 09:32:59.851 INFO [stderr]    |
Dec 04 09:32:59.851 INFO [stderr] 15 |     pub struct Valid <A : Testable> (A);
Dec 04 09:32:59.851 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:32:59.851 INFO [stderr]    |
Dec 04 09:32:59.851 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 04 09:32:59.851 INFO [stderr] 
Dec 04 09:32:59.851 INFO [stderr] warning: struct is never constructed: `Invalid`
Dec 04 09:32:59.851 INFO [stderr]   --> src/lib.rs:16:5
Dec 04 09:32:59.851 INFO [stderr]    |
Dec 04 09:32:59.855 INFO [stderr] 16 |     pub struct Invalid <A : Testable> (A);
Dec 04 09:32:59.855 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:32:59.855 INFO [stderr] 
Dec 04 09:32:59.855 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 09:32:59.855 INFO [stderr]  --> src/lib.rs:1:12
Dec 04 09:32:59.855 INFO [stderr]   |
Dec 04 09:32:59.855 INFO [stderr] 1 | #![feature(inclusive_range_syntax)]
Dec 04 09:32:59.855 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:32:59.855 INFO [stderr]   |
Dec 04 09:32:59.855 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 04 09:32:59.855 INFO [stderr] 
Dec 04 09:32:59.855 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 09:32:59.859 INFO [stderr]  --> src/lib.rs:2:12
Dec 04 09:32:59.859 INFO [stderr]   |
Dec 04 09:32:59.859 INFO [stderr] 2 | #![feature(iterator_step_by)]
Dec 04 09:32:59.859 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Dec 04 09:32:59.859 INFO [stderr] 
Dec 04 09:32:59.889 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 09:32:59.889 INFO [stderr]  --> src/main.rs:1:12
Dec 04 09:32:59.889 INFO [stderr]   |
Dec 04 09:32:59.889 INFO [stderr] 1 | #![feature(inclusive_range_syntax)]
Dec 04 09:32:59.889 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:32:59.889 INFO [stderr]   |
Dec 04 09:32:59.894 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 04 09:32:59.895 INFO [stderr] 
Dec 04 09:32:59.895 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 09:32:59.895 INFO [stderr]  --> src/main.rs:2:12
Dec 04 09:32:59.895 INFO [stderr]   |
Dec 04 09:32:59.895 INFO [stderr] 2 | #![feature(iterator_step_by)]
Dec 04 09:32:59.895 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Dec 04 09:32:59.895 INFO [stderr] 
Dec 04 09:32:59.963 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.25s
Dec 04 09:32:59.968 INFO [stderr] su: No module specific data is present
Dec 04 09:33:01.306 INFO running `"docker" "inspect" "d62cbb6ad5798a27cdd6af7329531071ce32df4e967368fa78ac2f7099583c8b"`
Dec 04 09:33:01.662 INFO running `"docker" "rm" "-f" "d62cbb6ad5798a27cdd6af7329531071ce32df4e967368fa78ac2f7099583c8b"`
Dec 04 09:33:01.939 INFO [stdout] d62cbb6ad5798a27cdd6af7329531071ce32df4e967368fa78ac2f7099583c8b