Dec 04 10:36:47.370 INFO checking scottwillmoore/rust-primer against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 10:36:47.370 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-6/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/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 10:36:48.004 INFO [stdout] 423ed55b7bdf576f03c56e6c993a2559997e310b3e184ff4e6fc64134368b2e4
Dec 04 10:36:48.007 INFO running `"docker" "start" "-a" "423ed55b7bdf576f03c56e6c993a2559997e310b3e184ff4e6fc64134368b2e4"`
Dec 04 10:36:50.291 INFO [stderr] usermod: no changes
Dec 04 10:36:50.436 INFO [stderr]     Checking libc v0.2.39
Dec 04 10:36:51.723 INFO [stderr]     Checking memchr v2.0.1
Dec 04 10:36:52.059 INFO [stderr]     Checking aho-corasick v0.6.4
Dec 04 10:36:52.831 INFO [stderr]     Checking regex v0.2.10
Dec 04 10:36:55.011 INFO [stderr]     Checking docopt v0.8.3
Dec 04 10:36:56.572 INFO [stderr]     Checking primer v0.1.0 (/source)
Dec 04 10:36:57.170 INFO [stderr] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
Dec 04 10:36:57.170 INFO [stderr]  --> src/lib.rs:1:12
Dec 04 10:36:57.170 INFO [stderr]   |
Dec 04 10:36:57.170 INFO [stderr] 1 | #![feature(iterator_step_by)]
Dec 04 10:36:57.170 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Dec 04 10:36:57.170 INFO [stderr]   |
Dec 04 10:36:57.170 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 04 10:36:57.170 INFO [stderr] 
Dec 04 10:36:57.171 INFO [stderr] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
Dec 04 10:36:57.171 INFO [stderr]  --> src/lib.rs:1:12
Dec 04 10:36:57.171 INFO [stderr]   |
Dec 04 10:36:57.171 INFO [stderr] 1 | #![feature(iterator_step_by)]
Dec 04 10:36:57.171 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Dec 04 10:36:57.171 INFO [stderr]   |
Dec 04 10:36:57.171 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 04 10:36:57.171 INFO [stderr] 
Dec 04 10:36:58.411 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.09s
Dec 04 10:36:58.424 INFO [stderr] su: No module specific data is present
Dec 04 10:36:59.976 INFO running `"docker" "inspect" "423ed55b7bdf576f03c56e6c993a2559997e310b3e184ff4e6fc64134368b2e4"`
Dec 04 10:37:00.335 INFO running `"docker" "rm" "-f" "423ed55b7bdf576f03c56e6c993a2559997e310b3e184ff4e6fc64134368b2e4"`
Dec 04 10:37:00.696 INFO [stdout] 423ed55b7bdf576f03c56e6c993a2559997e310b3e184ff4e6fc64134368b2e4