Dec 17 15:54:56.589 INFO checking scottwillmoore/rust-primer against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 15:54:56.589 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-4/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 15:54:56.986 INFO [stdout] af746b2452380ba511d5f23d07eb1364e753f0228cb118e11c9e2cd6a1a8687f
Dec 17 15:54:56.988 INFO running `"docker" "start" "-a" "af746b2452380ba511d5f23d07eb1364e753f0228cb118e11c9e2cd6a1a8687f"`
Dec 17 15:54:58.728 INFO [stderr]     Checking libc v0.2.39
Dec 17 15:55:00.016 INFO [stderr]     Checking memchr v2.0.1
Dec 17 15:55:00.332 INFO [stderr]     Checking aho-corasick v0.6.4
Dec 17 15:55:01.032 INFO [stderr]     Checking regex v0.2.10
Dec 17 15:55:03.278 INFO [stderr]     Checking docopt v0.8.3
Dec 17 15:55:04.609 INFO [stderr]     Checking primer v0.1.0 (/opt/crater/workdir)
Dec 17 15:55:04.972 INFO [stderr] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
Dec 17 15:55:04.972 INFO [stderr]  --> src/lib.rs:1:12
Dec 17 15:55:04.972 INFO [stderr]   |
Dec 17 15:55:04.972 INFO [stderr] 1 | #![feature(iterator_step_by)]
Dec 17 15:55:04.972 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Dec 17 15:55:04.972 INFO [stderr]   |
Dec 17 15:55:04.972 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 17 15:55:04.972 INFO [stderr] 
Dec 17 15:55:05.180 INFO [stderr] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
Dec 17 15:55:05.180 INFO [stderr]  --> src/lib.rs:1:12
Dec 17 15:55:05.180 INFO [stderr]   |
Dec 17 15:55:05.180 INFO [stderr] 1 | #![feature(iterator_step_by)]
Dec 17 15:55:05.180 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Dec 17 15:55:05.180 INFO [stderr]   |
Dec 17 15:55:05.180 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 17 15:55:05.180 INFO [stderr] 
Dec 17 15:55:06.168 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.54s
Dec 17 15:55:06.946 INFO running `"docker" "inspect" "af746b2452380ba511d5f23d07eb1364e753f0228cb118e11c9e2cd6a1a8687f"`
Dec 17 15:55:07.248 INFO running `"docker" "rm" "-f" "af746b2452380ba511d5f23d07eb1364e753f0228cb118e11c9e2cd6a1a8687f"`
Dec 17 15:55:07.596 INFO [stdout] af746b2452380ba511d5f23d07eb1364e753f0228cb118e11c9e2cd6a1a8687f