Dec 12 09:24:23.143 INFO checking rats-0.0.1 against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 09:24:23.143 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 12 09:24:23.561 INFO [stdout] 209cf025ee84409373c96d9f3f031167d68b36298e57ac6b8ae64ae983defe87
Dec 12 09:24:23.566 INFO running `"docker" "start" "-a" "209cf025ee84409373c96d9f3f031167d68b36298e57ac6b8ae64ae983defe87"`
Dec 12 09:24:25.013 INFO [stderr] usermod: no changes
Dec 12 09:24:25.156 INFO [stderr]     Checking rats v0.0.1 (/source)
Dec 12 09:24:27.688 INFO [stderr] warning: unused import: `futures::future::AndThen`
Dec 12 09:24:27.688 INFO [stderr]  --> src/instances/future.rs:7:5
Dec 12 09:24:27.688 INFO [stderr]   |
Dec 12 09:24:27.688 INFO [stderr] 7 | use futures::future::AndThen;
Dec 12 09:24:27.688 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 09:24:27.688 INFO [stderr]   |
Dec 12 09:24:27.689 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 09:24:27.689 INFO [stderr] 
Dec 12 09:24:27.692 INFO [stderr] warning: unused import: `futures::future`
Dec 12 09:24:27.692 INFO [stderr]   --> src/instances/option.rs:77:13
Dec 12 09:24:27.692 INFO [stderr]    |
Dec 12 09:24:27.692 INFO [stderr] 77 |         use futures::future;
Dec 12 09:24:27.692 INFO [stderr]    |             ^^^^^^^^^^^^^^^
Dec 12 09:24:27.692 INFO [stderr] 
Dec 12 09:24:27.692 INFO [stderr] warning: unused import: `futures::future::FutureResult`
Dec 12 09:24:27.692 INFO [stderr]   --> src/instances/option.rs:79:13
Dec 12 09:24:27.692 INFO [stderr]    |
Dec 12 09:24:27.692 INFO [stderr] 79 |         use futures::future::FutureResult;
Dec 12 09:24:27.692 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 09:24:27.692 INFO [stderr] 
Dec 12 09:24:27.692 INFO [stderr] warning: unused import: `applicative::Applicative`
Dec 12 09:24:27.692 INFO [stderr]  --> src/instances/result.rs:5:5
Dec 12 09:24:27.692 INFO [stderr]   |
Dec 12 09:24:27.692 INFO [stderr] 5 | use applicative::Applicative;
Dec 12 09:24:27.692 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 09:24:27.692 INFO [stderr] 
Dec 12 09:24:28.096 INFO [stderr] warning: unused import: `futures::future::AndThen`
Dec 12 09:24:28.096 INFO [stderr]  --> src/instances/future.rs:7:5
Dec 12 09:24:28.096 INFO [stderr]   |
Dec 12 09:24:28.096 INFO [stderr] 7 | use futures::future::AndThen;
Dec 12 09:24:28.096 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 09:24:28.096 INFO [stderr]   |
Dec 12 09:24:28.096 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 09:24:28.096 INFO [stderr] 
Dec 12 09:24:28.096 INFO [stderr] warning: unused import: `applicative::Applicative`
Dec 12 09:24:28.096 INFO [stderr]  --> src/instances/result.rs:5:5
Dec 12 09:24:28.096 INFO [stderr]   |
Dec 12 09:24:28.096 INFO [stderr] 5 | use applicative::Applicative;
Dec 12 09:24:28.096 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 09:24:28.096 INFO [stderr] 
Dec 12 09:24:28.380 INFO [stderr] warning: the feature `tool_attributes` has been stable since 1.30.0 and no longer requires an attribute to enable
Dec 12 09:24:28.380 INFO [stderr]  --> src/lib.rs:4:12
Dec 12 09:24:28.380 INFO [stderr]   |
Dec 12 09:24:28.380 INFO [stderr] 4 | #![feature(tool_attributes)]
Dec 12 09:24:28.380 INFO [stderr]   |            ^^^^^^^^^^^^^^^
Dec 12 09:24:28.380 INFO [stderr]   |
Dec 12 09:24:28.380 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 12 09:24:28.380 INFO [stderr] 
Dec 12 09:24:28.668 INFO [stderr] warning: the feature `tool_attributes` has been stable since 1.30.0 and no longer requires an attribute to enable
Dec 12 09:24:28.668 INFO [stderr]  --> src/lib.rs:4:12
Dec 12 09:24:28.668 INFO [stderr]   |
Dec 12 09:24:28.668 INFO [stderr] 4 | #![feature(tool_attributes)]
Dec 12 09:24:28.668 INFO [stderr]   |            ^^^^^^^^^^^^^^^
Dec 12 09:24:28.668 INFO [stderr]   |
Dec 12 09:24:28.668 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 12 09:24:28.668 INFO [stderr] 
Dec 12 09:24:28.760 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.71s
Dec 12 09:24:28.773 INFO [stderr] su: No module specific data is present
Dec 12 09:24:29.416 INFO running `"docker" "inspect" "209cf025ee84409373c96d9f3f031167d68b36298e57ac6b8ae64ae983defe87"`
Dec 12 09:24:29.778 INFO running `"docker" "rm" "-f" "209cf025ee84409373c96d9f3f031167d68b36298e57ac6b8ae64ae983defe87"`
Dec 12 09:24:30.170 INFO [stdout] 209cf025ee84409373c96d9f3f031167d68b36298e57ac6b8ae64ae983defe87