Dec 18 12:33:08.965 INFO checking rats-0.0.1 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 12:33:08.965 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-5/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/reg/rats/0.0.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 12:33:09.361 INFO [stdout] 6fb3699fb184db1a925e57941f9cbe273ab0d7f4edd4ea9fad1f6637f9b2f032
Dec 18 12:33:09.366 INFO running `"docker" "start" "-a" "6fb3699fb184db1a925e57941f9cbe273ab0d7f4edd4ea9fad1f6637f9b2f032"`
Dec 18 12:33:11.196 INFO [stderr]     Checking futures-io-preview v0.2.2
Dec 18 12:33:11.598 INFO [stderr]     Checking futures-util-preview v0.2.2
Dec 18 12:33:14.376 INFO [stderr]     Checking futures-executor-preview v0.2.2
Dec 18 12:33:15.020 INFO [stderr]     Checking futures-stable-preview v0.2.3
Dec 18 12:33:15.256 INFO [stderr]     Checking futures-async-runtime-preview v0.2.3
Dec 18 12:33:15.448 INFO [stderr]     Checking futures-preview v0.2.2
Dec 18 12:33:15.844 INFO [stderr]     Checking rats v0.0.1 (/opt/crater/workdir)
Dec 18 12:33:16.646 INFO [stderr] warning: unused import: `futures::future::AndThen`
Dec 18 12:33:16.646 INFO [stderr]  --> src/instances/future.rs:7:5
Dec 18 12:33:16.646 INFO [stderr]   |
Dec 18 12:33:16.646 INFO [stderr] 7 | use futures::future::AndThen;
Dec 18 12:33:16.646 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 12:33:16.646 INFO [stderr]   |
Dec 18 12:33:16.646 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 12:33:16.646 INFO [stderr] 
Dec 18 12:33:16.646 INFO [stderr] warning: unused import: `futures::future`
Dec 18 12:33:16.646 INFO [stderr]   --> src/instances/option.rs:77:13
Dec 18 12:33:16.647 INFO [stderr]    |
Dec 18 12:33:16.647 INFO [stderr] 77 |         use futures::future;
Dec 18 12:33:16.647 INFO [stderr]    |             ^^^^^^^^^^^^^^^
Dec 18 12:33:16.647 INFO [stderr] 
Dec 18 12:33:16.647 INFO [stderr] warning: unused import: `futures::future::FutureResult`
Dec 18 12:33:16.647 INFO [stderr]   --> src/instances/option.rs:79:13
Dec 18 12:33:16.647 INFO [stderr]    |
Dec 18 12:33:16.647 INFO [stderr] 79 |         use futures::future::FutureResult;
Dec 18 12:33:16.647 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 12:33:16.647 INFO [stderr] 
Dec 18 12:33:16.647 INFO [stderr] warning: unused import: `applicative::Applicative`
Dec 18 12:33:16.647 INFO [stderr]  --> src/instances/result.rs:5:5
Dec 18 12:33:16.647 INFO [stderr]   |
Dec 18 12:33:16.647 INFO [stderr] 5 | use applicative::Applicative;
Dec 18 12:33:16.647 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 12:33:16.647 INFO [stderr] 
Dec 18 12:33:16.720 INFO [stderr] warning: unused import: `futures::future::AndThen`
Dec 18 12:33:16.721 INFO [stderr]  --> src/instances/future.rs:7:5
Dec 18 12:33:16.721 INFO [stderr]   |
Dec 18 12:33:16.721 INFO [stderr] 7 | use futures::future::AndThen;
Dec 18 12:33:16.722 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 12:33:16.722 INFO [stderr]   |
Dec 18 12:33:16.722 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 12:33:16.723 INFO [stderr] 
Dec 18 12:33:16.723 INFO [stderr] warning: unused import: `applicative::Applicative`
Dec 18 12:33:16.723 INFO [stderr]  --> src/instances/result.rs:5:5
Dec 18 12:33:16.723 INFO [stderr]   |
Dec 18 12:33:16.723 INFO [stderr] 5 | use applicative::Applicative;
Dec 18 12:33:16.723 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 12:33:16.723 INFO [stderr] 
Dec 18 12:33:17.064 INFO [stderr] warning: the feature `tool_attributes` has been stable since 1.30.0 and no longer requires an attribute to enable
Dec 18 12:33:17.065 INFO [stderr]  --> src/lib.rs:4:12
Dec 18 12:33:17.065 INFO [stderr]   |
Dec 18 12:33:17.065 INFO [stderr] 4 | #![feature(tool_attributes)]
Dec 18 12:33:17.066 INFO [stderr]   |            ^^^^^^^^^^^^^^^
Dec 18 12:33:17.066 INFO [stderr]   |
Dec 18 12:33:17.066 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 18 12:33:17.066 INFO [stderr] 
Dec 18 12:33:17.290 INFO [stderr] warning: the feature `tool_attributes` has been stable since 1.30.0 and no longer requires an attribute to enable
Dec 18 12:33:17.290 INFO [stderr]  --> src/lib.rs:4:12
Dec 18 12:33:17.290 INFO [stderr]   |
Dec 18 12:33:17.290 INFO [stderr] 4 | #![feature(tool_attributes)]
Dec 18 12:33:17.290 INFO [stderr]   |            ^^^^^^^^^^^^^^^
Dec 18 12:33:17.290 INFO [stderr]   |
Dec 18 12:33:17.290 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 18 12:33:17.290 INFO [stderr] 
Dec 18 12:33:17.361 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.26s
Dec 18 12:33:18.551 INFO running `"docker" "inspect" "6fb3699fb184db1a925e57941f9cbe273ab0d7f4edd4ea9fad1f6637f9b2f032"`
Dec 18 12:33:18.782 INFO running `"docker" "rm" "-f" "6fb3699fb184db1a925e57941f9cbe273ab0d7f4edd4ea9fad1f6637f9b2f032"`
Dec 18 12:33:19.079 INFO [stdout] 6fb3699fb184db1a925e57941f9cbe273ab0d7f4edd4ea9fad1f6637f9b2f032