Dec 18 16:28:47.225 INFO checking fixed_circular_buffer-0.2.2 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 16:28:47.226 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-6/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/reg/fixed_circular_buffer/0.2.2:/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 18 16:28:47.634 INFO [stdout] 347c9e0d31c08c13e31886f71e34e9934dc596e22500c922250dbe8d7b96a319
Dec 18 16:28:47.642 INFO running `"docker" "start" "-a" "347c9e0d31c08c13e31886f71e34e9934dc596e22500c922250dbe8d7b96a319"`
Dec 18 16:28:49.029 INFO [stderr]     Checking fixed_circular_buffer v0.2.2 (/opt/crater/workdir)
Dec 18 16:28:49.428 INFO [stderr] warning: the feature `core` has been stable since 1.6.0 and no longer requires an attribute to enable
Dec 18 16:28:49.428 INFO [stderr]  --> src/lib.rs:1:12
Dec 18 16:28:49.428 INFO [stderr]   |
Dec 18 16:28:49.428 INFO [stderr] 1 | #![feature(core)]
Dec 18 16:28:49.428 INFO [stderr]   |            ^^^^
Dec 18 16:28:49.428 INFO [stderr]   |
Dec 18 16:28:49.428 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 18 16:28:49.428 INFO [stderr] 
Dec 18 16:28:50.069 INFO [stderr] warning: the feature `core` has been stable since 1.6.0 and no longer requires an attribute to enable
Dec 18 16:28:50.069 INFO [stderr]  --> src/lib.rs:1:12
Dec 18 16:28:50.069 INFO [stderr]   |
Dec 18 16:28:50.069 INFO [stderr] 1 | #![feature(core)]
Dec 18 16:28:50.069 INFO [stderr]   |            ^^^^
Dec 18 16:28:50.069 INFO [stderr]   |
Dec 18 16:28:50.069 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 18 16:28:50.069 INFO [stderr] 
Dec 18 16:28:50.107 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.09s
Dec 18 16:28:50.562 INFO running `"docker" "inspect" "347c9e0d31c08c13e31886f71e34e9934dc596e22500c922250dbe8d7b96a319"`
Dec 18 16:28:50.704 INFO running `"docker" "rm" "-f" "347c9e0d31c08c13e31886f71e34e9934dc596e22500c922250dbe8d7b96a319"`
Dec 18 16:28:50.816 INFO [stdout] 347c9e0d31c08c13e31886f71e34e9934dc596e22500c922250dbe8d7b96a319