Dec 19 09:14:54.205 INFO checking scottwillmoore/rust-primer against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 09:14:54.205 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-7/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/scottwillmoore/rust-primer:/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 09:14:54.701 INFO [stdout] ee89f54b1992b440651b0b3a011832c54593d96699df303ce6f9fa4c9f44e65b
Dec 19 09:14:54.708 INFO running `"docker" "start" "-a" "ee89f54b1992b440651b0b3a011832c54593d96699df303ce6f9fa4c9f44e65b"`
Dec 19 09:14:56.312 INFO [stderr]     Checking libc v0.2.39
Dec 19 09:14:56.336 INFO [stderr]    Compiling serde_derive_internals v0.21.0
Dec 19 09:14:59.724 INFO [stderr]     Checking memchr v2.0.1
Dec 19 09:15:00.336 INFO [stderr]     Checking aho-corasick v0.6.4
Dec 19 09:15:00.384 INFO [stderr]    Compiling serde_derive v1.0.33
Dec 19 09:15:01.312 INFO [stderr]     Checking regex v0.2.10
Dec 19 09:15:11.080 INFO [stderr]     Checking docopt v0.8.3
Dec 19 09:15:12.296 INFO [stderr]     Checking primer v0.1.0 (/opt/crater/workdir)
Dec 19 09:15:12.488 INFO [stderr] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
Dec 19 09:15:12.488 INFO [stderr]  --> src/lib.rs:1:12
Dec 19 09:15:12.488 INFO [stderr]   |
Dec 19 09:15:12.488 INFO [stderr] 1 | #![feature(iterator_step_by)]
Dec 19 09:15:12.488 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Dec 19 09:15:12.488 INFO [stderr]   |
Dec 19 09:15:12.488 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 19 09:15:12.488 INFO [stderr] 
Dec 19 09:15:12.907 INFO [stderr] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
Dec 19 09:15:12.907 INFO [stderr]  --> src/lib.rs:1:12
Dec 19 09:15:12.907 INFO [stderr]   |
Dec 19 09:15:12.916 INFO [stderr] 1 | #![feature(iterator_step_by)]
Dec 19 09:15:12.917 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Dec 19 09:15:12.917 INFO [stderr]   |
Dec 19 09:15:12.917 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 19 09:15:12.917 INFO [stderr] 
Dec 19 09:15:13.385 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.17s
Dec 19 09:15:14.348 INFO running `"docker" "inspect" "ee89f54b1992b440651b0b3a011832c54593d96699df303ce6f9fa4c9f44e65b"`
Dec 19 09:15:14.706 INFO running `"docker" "rm" "-f" "ee89f54b1992b440651b0b3a011832c54593d96699df303ce6f9fa4c9f44e65b"`
Dec 19 09:15:15.056 INFO [stdout] ee89f54b1992b440651b0b3a011832c54593d96699df303ce6f9fa4c9f44e65b