Dec 12 09:15:16.274 INFO checking regex_dfa-0.5.0 against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 12 09:15:16.274 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-7/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-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 12 09:15:16.656 INFO [stdout] 75b893c295f93ddd2273d1b556fe12752943de8df56d586a84eb9b54a61303a2
Dec 12 09:15:16.658 INFO running `"docker" "start" "-a" "75b893c295f93ddd2273d1b556fe12752943de8df56d586a84eb9b54a61303a2"`
Dec 12 09:15:17.721 INFO [stderr] usermod: no changes
Dec 12 09:15:17.760 INFO [stderr] warning: An explicit [[bench]] section is specified in Cargo.toml which currently
Dec 12 09:15:17.760 INFO [stderr] disables Cargo from automatically inferring other benchmark targets.
Dec 12 09:15:17.760 INFO [stderr] This inference behavior will change in the Rust 2018 edition and the following
Dec 12 09:15:17.760 INFO [stderr] files will be included as a benchmark target:
Dec 12 09:15:17.760 INFO [stderr] 
Dec 12 09:15:17.760 INFO [stderr] * /source/benches/bench.rs
Dec 12 09:15:17.760 INFO [stderr] 
Dec 12 09:15:17.760 INFO [stderr] This is likely to break cargo build or cargo test as these files may not be
Dec 12 09:15:17.760 INFO [stderr] ready to be compiled as a benchmark target today. You can future-proof yourself
Dec 12 09:15:17.760 INFO [stderr] and disable this warning by adding `autobenches = false` to your [package]
Dec 12 09:15:17.760 INFO [stderr] section. You may also move the files to a location where Cargo would not
Dec 12 09:15:17.760 INFO [stderr] automatically infer them to be a target, such as in subfolders.
Dec 12 09:15:17.760 INFO [stderr] 
Dec 12 09:15:17.760 INFO [stderr] For more information on this warning you can consult
Dec 12 09:15:17.760 INFO [stderr] https://github.com/rust-lang/cargo/issues/5330
Dec 12 09:15:17.760 INFO [stderr] warning: file found to be present in multiple build targets: /source/src/lib.rs
Dec 12 09:15:17.838 INFO [stderr]     Checking regex-syntax v0.2.6
Dec 12 09:15:17.838 INFO [stderr]     Checking refinery v0.1.1
Dec 12 09:15:17.846 INFO [stderr]     Checking range-map v0.1.5
Dec 12 09:15:19.972 INFO [stderr]     Checking regex_dfa v0.5.0 (/source)
Dec 12 09:15:21.024 INFO [stderr] warning: unused import: `std::cmp::max`
Dec 12 09:15:21.024 INFO [stderr]   --> src/nfa/has_looks.rs:11:5
Dec 12 09:15:21.024 INFO [stderr]    |
Dec 12 09:15:21.024 INFO [stderr] 11 | use std::cmp::max;
Dec 12 09:15:21.024 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 12 09:15:21.024 INFO [stderr]    |
Dec 12 09:15:21.024 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 12 09:15:21.024 INFO [stderr] 
Dec 12 09:15:22.024 INFO [stderr] warning: unused imports: `TestResult`, `quickcheck`
Dec 12 09:15:22.024 INFO [stderr]    --> src/dfa/prefix_searcher.rs:244:34
Dec 12 09:15:22.024 INFO [stderr]     |
Dec 12 09:15:22.024 INFO [stderr] 244 |     use quickcheck::{QuickCheck, quickcheck, StdGen, TestResult};
Dec 12 09:15:22.024 INFO [stderr]     |                                  ^^^^^^^^^^          ^^^^^^^^^^
Dec 12 09:15:22.024 INFO [stderr]     |
Dec 12 09:15:22.024 INFO [stderr]     = note: #[warn(unused_imports)] on by default
Dec 12 09:15:22.024 INFO [stderr] 
Dec 12 09:15:22.024 INFO [stderr] warning: unused import: `std::cmp::max`
Dec 12 09:15:22.024 INFO [stderr]   --> src/nfa/has_looks.rs:11:5
Dec 12 09:15:22.024 INFO [stderr]    |
Dec 12 09:15:22.024 INFO [stderr] 11 | use std::cmp::max;
Dec 12 09:15:22.024 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 12 09:15:22.024 INFO [stderr] 
Dec 12 09:15:24.472 INFO [stderr] warning: function is never used: `qc`
Dec 12 09:15:24.472 INFO [stderr]    --> src/dfa/prefix_searcher.rs:249:5
Dec 12 09:15:24.472 INFO [stderr]     |
Dec 12 09:15:24.472 INFO [stderr] 249 |     fn qc(size: usize) -> QuickCheck<StdGen<rand::ThreadRng>> {
Dec 12 09:15:24.472 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 09:15:24.472 INFO [stderr]     |
Dec 12 09:15:24.472 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 12 09:15:24.472 INFO [stderr] 
Dec 12 09:15:27.224 INFO [stderr] warning: unused imports: `TestResult`, `quickcheck`
Dec 12 09:15:27.224 INFO [stderr]    --> src/dfa/prefix_searcher.rs:244:34
Dec 12 09:15:27.225 INFO [stderr]     |
Dec 12 09:15:27.225 INFO [stderr] 244 |     use quickcheck::{QuickCheck, quickcheck, StdGen, TestResult};
Dec 12 09:15:27.225 INFO [stderr]     |                                  ^^^^^^^^^^          ^^^^^^^^^^
Dec 12 09:15:27.225 INFO [stderr]     |
Dec 12 09:15:27.225 INFO [stderr]     = note: #[warn(unused_imports)] on by default
Dec 12 09:15:27.225 INFO [stderr] 
Dec 12 09:15:27.225 INFO [stderr] warning: unused import: `std::cmp::max`
Dec 12 09:15:27.225 INFO [stderr]   --> src/nfa/has_looks.rs:11:5
Dec 12 09:15:27.225 INFO [stderr]    |
Dec 12 09:15:27.225 INFO [stderr] 11 | use std::cmp::max;
Dec 12 09:15:27.225 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 12 09:15:27.225 INFO [stderr] 
Dec 12 09:15:28.700 INFO [stderr] warning: function is never used: `qc`
Dec 12 09:15:28.700 INFO [stderr]    --> src/dfa/prefix_searcher.rs:249:5
Dec 12 09:15:28.700 INFO [stderr]     |
Dec 12 09:15:28.700 INFO [stderr] 249 |     fn qc(size: usize) -> QuickCheck<StdGen<rand::ThreadRng>> {
Dec 12 09:15:28.704 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 09:15:28.704 INFO [stderr]     |
Dec 12 09:15:28.704 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 12 09:15:28.704 INFO [stderr] 
Dec 12 09:15:33.243 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.50s
Dec 12 09:15:33.249 INFO [stderr] su: No module specific data is present
Dec 12 09:15:33.775 INFO running `"docker" "inspect" "75b893c295f93ddd2273d1b556fe12752943de8df56d586a84eb9b54a61303a2"`
Dec 12 09:15:33.917 INFO running `"docker" "rm" "-f" "75b893c295f93ddd2273d1b556fe12752943de8df56d586a84eb9b54a61303a2"`
Dec 12 09:15:34.039 INFO [stdout] 75b893c295f93ddd2273d1b556fe12752943de8df56d586a84eb9b54a61303a2