Dec 04 21:49:25.678 INFO checking binshengliu/rforests against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 21:49:25.678 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-2/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/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 21:49:26.261 INFO [stdout] f1f9b1496d5d232d78d061830e189ff9d47aa6263e01a23d208548609e337346
Dec 04 21:49:26.263 INFO running `"docker" "start" "-a" "f1f9b1496d5d232d78d061830e189ff9d47aa6263e01a23d208548609e337346"`
Dec 04 21:49:27.851 INFO [stderr] usermod: no changes
Dec 04 21:49:28.031 INFO [stderr]     Checking clap v2.27.0
Dec 04 21:49:28.031 INFO [stderr]     Checking env_logger v0.4.3
Dec 04 21:49:36.867 INFO [stderr]     Checking rforests v0.1.0 (/source)
Dec 04 21:49:39.835 INFO [stderr] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 04 21:49:39.835 INFO [stderr]  --> src/lib.rs:2:12
Dec 04 21:49:39.835 INFO [stderr]   |
Dec 04 21:49:39.836 INFO [stderr] 2 | #![feature(conservative_impl_trait)]
Dec 04 21:49:39.836 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 21:49:39.836 INFO [stderr]   |
Dec 04 21:49:39.836 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 04 21:49:39.836 INFO [stderr] 
Dec 04 21:49:39.836 INFO [stderr] warning: the feature `ord_max_min` has been stable since 1.21.0 and no longer requires an attribute to enable
Dec 04 21:49:39.836 INFO [stderr]  --> src/lib.rs:1:12
Dec 04 21:49:39.837 INFO [stderr]   |
Dec 04 21:49:39.837 INFO [stderr] 1 | #![feature(ord_max_min)]
Dec 04 21:49:39.837 INFO [stderr]   |            ^^^^^^^^^^^
Dec 04 21:49:39.837 INFO [stderr] 
Dec 04 21:49:39.931 INFO [stderr] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 04 21:49:39.931 INFO [stderr]  --> src/lib.rs:2:12
Dec 04 21:49:39.932 INFO [stderr]   |
Dec 04 21:49:39.932 INFO [stderr] 2 | #![feature(conservative_impl_trait)]
Dec 04 21:49:39.932 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 21:49:39.932 INFO [stderr]   |
Dec 04 21:49:39.936 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 04 21:49:39.938 INFO [stderr] 
Dec 04 21:49:39.938 INFO [stderr] warning: the feature `ord_max_min` has been stable since 1.21.0 and no longer requires an attribute to enable
Dec 04 21:49:39.938 INFO [stderr]  --> src/lib.rs:1:12
Dec 04 21:49:39.938 INFO [stderr]   |
Dec 04 21:49:39.938 INFO [stderr] 1 | #![feature(ord_max_min)]
Dec 04 21:49:39.938 INFO [stderr]   |            ^^^^^^^^^^^
Dec 04 21:49:39.938 INFO [stderr] 
Dec 04 21:49:42.051 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.17s
Dec 04 21:49:42.056 INFO [stderr] su: No module specific data is present
Dec 04 21:49:42.733 INFO running `"docker" "inspect" "f1f9b1496d5d232d78d061830e189ff9d47aa6263e01a23d208548609e337346"`
Dec 04 21:49:43.035 INFO running `"docker" "rm" "-f" "f1f9b1496d5d232d78d061830e189ff9d47aa6263e01a23d208548609e337346"`
Dec 04 21:49:43.390 INFO [stdout] f1f9b1496d5d232d78d061830e189ff9d47aa6263e01a23d208548609e337346