Dec 04 21:49:23.674 INFO checking binshengliu/rforests against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 21:49:23.674 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-3/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/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 21:49:24.160 INFO [stdout] aaff635d39d5b3b6d8d6d54712e9a34ca0845633bb3c9188a3faf2b2d241c89e
Dec 04 21:49:24.163 INFO running `"docker" "start" "-a" "aaff635d39d5b3b6d8d6d54712e9a34ca0845633bb3c9188a3faf2b2d241c89e"`
Dec 04 21:49:25.377 INFO [stderr] usermod: no changes
Dec 04 21:49:25.491 INFO [stderr]     Checking memchr v1.0.2
Dec 04 21:49:25.491 INFO [stderr]     Checking clap v2.27.0
Dec 04 21:49:26.319 INFO [stderr]     Checking aho-corasick v0.6.3
Dec 04 21:49:27.347 INFO [stderr]     Checking regex v0.2.2
Dec 04 21:49:32.125 INFO [stderr]     Checking env_logger v0.4.3
Dec 04 21:49:35.875 INFO [stderr]     Checking rforests v0.1.0 (/source)
Dec 04 21:49:38.767 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 21:49:38.767 INFO [stderr]  --> src/lib.rs:2:12
Dec 04 21:49:38.767 INFO [stderr]   |
Dec 04 21:49:38.767 INFO [stderr] 2 | #![feature(conservative_impl_trait)]
Dec 04 21:49:38.767 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 21:49:38.767 INFO [stderr]   |
Dec 04 21:49:38.767 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 04 21:49:38.767 INFO [stderr] 
Dec 04 21:49:38.784 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 21:49:38.784 INFO [stderr]  --> src/lib.rs:1:12
Dec 04 21:49:38.784 INFO [stderr]   |
Dec 04 21:49:38.784 INFO [stderr] 1 | #![feature(ord_max_min)]
Dec 04 21:49:38.784 INFO [stderr]   |            ^^^^^^^^^^^
Dec 04 21:49:38.784 INFO [stderr] 
Dec 04 21:49:38.921 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 21:49:38.921 INFO [stderr]  --> src/lib.rs:2:12
Dec 04 21:49:38.921 INFO [stderr]   |
Dec 04 21:49:38.921 INFO [stderr] 2 | #![feature(conservative_impl_trait)]
Dec 04 21:49:38.921 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 21:49:38.921 INFO [stderr]   |
Dec 04 21:49:38.921 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 04 21:49:38.921 INFO [stderr] 
Dec 04 21:49:38.921 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 21:49:38.921 INFO [stderr]  --> src/lib.rs:1:12
Dec 04 21:49:38.921 INFO [stderr]   |
Dec 04 21:49:38.921 INFO [stderr] 1 | #![feature(ord_max_min)]
Dec 04 21:49:38.921 INFO [stderr]   |            ^^^^^^^^^^^
Dec 04 21:49:38.921 INFO [stderr] 
Dec 04 21:49:41.139 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.73s
Dec 04 21:49:41.145 INFO [stderr] su: No module specific data is present
Dec 04 21:49:41.765 INFO running `"docker" "inspect" "aaff635d39d5b3b6d8d6d54712e9a34ca0845633bb3c9188a3faf2b2d241c89e"`
Dec 04 21:49:42.092 INFO running `"docker" "rm" "-f" "aaff635d39d5b3b6d8d6d54712e9a34ca0845633bb3c9188a3faf2b2d241c89e"`
Dec 04 21:49:42.347 INFO [stdout] aaff635d39d5b3b6d8d6d54712e9a34ca0845633bb3c9188a3faf2b2d241c89e