Dec 17 18:42:49.397 INFO checking nikomatsakis/grep-test against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 18:42:49.397 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-0/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/nikomatsakis/grep-test:/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 18:42:49.843 INFO [stdout] 2ccdffe67b0b9bf427fb1fd56216ce5862138a868b07abb16ba772c12bb3d6a7
Dec 17 18:42:49.845 INFO running `"docker" "start" "-a" "2ccdffe67b0b9bf427fb1fd56216ce5862138a868b07abb16ba772c12bb3d6a7"`
Dec 17 18:42:51.620 INFO [stderr]     Checking backtrace v0.3.5
Dec 17 18:42:52.104 INFO [stderr]     Checking failure v0.1.1
Dec 17 18:42:52.555 INFO [stderr]     Checking grep-test v0.1.0 (/opt/crater/workdir)
Dec 17 18:42:52.899 INFO [stderr] warning: the feature `crate_in_paths` has been stable since 1.30.0 and no longer requires an attribute to enable
Dec 17 18:42:52.899 INFO [stderr]  --> src/main.rs:1:12
Dec 17 18:42:52.900 INFO [stderr]   |
Dec 17 18:42:52.900 INFO [stderr] 1 | #![feature(crate_in_paths, crate_visibility_modifier, extern_in_paths, decl_macro,
Dec 17 18:42:52.900 INFO [stderr]   |            ^^^^^^^^^^^^^^
Dec 17 18:42:52.900 INFO [stderr]   |
Dec 17 18:42:52.901 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 17 18:42:52.901 INFO [stderr] 
Dec 17 18:42:52.901 INFO [stderr] warning: the feature `termination_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 17 18:42:52.901 INFO [stderr]  --> src/main.rs:2:12
Dec 17 18:42:52.901 INFO [stderr]   |
Dec 17 18:42:52.901 INFO [stderr] 2 |            termination_trait, use_nested_groups, universal_impl_trait)]
Dec 17 18:42:52.901 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^
Dec 17 18:42:52.901 INFO [stderr] 
Dec 17 18:42:52.901 INFO [stderr] warning: the feature `use_nested_groups` has been stable since 1.25.0 and no longer requires an attribute to enable
Dec 17 18:42:52.901 INFO [stderr]  --> src/main.rs:2:31
Dec 17 18:42:52.901 INFO [stderr]   |
Dec 17 18:42:52.901 INFO [stderr] 2 |            termination_trait, use_nested_groups, universal_impl_trait)]
Dec 17 18:42:52.901 INFO [stderr]   |                               ^^^^^^^^^^^^^^^^^
Dec 17 18:42:52.901 INFO [stderr] 
Dec 17 18:42:52.903 INFO [stderr] warning: the feature `universal_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 17 18:42:52.903 INFO [stderr]  --> src/main.rs:2:50
Dec 17 18:42:52.903 INFO [stderr]   |
Dec 17 18:42:52.903 INFO [stderr] 2 |            termination_trait, use_nested_groups, universal_impl_trait)]
Dec 17 18:42:52.903 INFO [stderr]   |                                                  ^^^^^^^^^^^^^^^^^^^^
Dec 17 18:42:52.903 INFO [stderr] 
Dec 17 18:42:52.952 INFO [stderr] warning: the feature `crate_in_paths` has been stable since 1.30.0 and no longer requires an attribute to enable
Dec 17 18:42:52.952 INFO [stderr]  --> src/main.rs:1:12
Dec 17 18:42:52.952 INFO [stderr]   |
Dec 17 18:42:52.952 INFO [stderr] 1 | #![feature(crate_in_paths, crate_visibility_modifier, extern_in_paths, decl_macro,
Dec 17 18:42:52.953 INFO [stderr]   |            ^^^^^^^^^^^^^^
Dec 17 18:42:52.953 INFO [stderr]   |
Dec 17 18:42:52.953 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 17 18:42:52.953 INFO [stderr] 
Dec 17 18:42:52.953 INFO [stderr] warning: the feature `termination_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 17 18:42:52.953 INFO [stderr]  --> src/main.rs:2:12
Dec 17 18:42:52.953 INFO [stderr]   |
Dec 17 18:42:52.953 INFO [stderr] 2 |            termination_trait, use_nested_groups, universal_impl_trait)]
Dec 17 18:42:52.953 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^
Dec 17 18:42:52.953 INFO [stderr] 
Dec 17 18:42:52.953 INFO [stderr] warning: the feature `use_nested_groups` has been stable since 1.25.0 and no longer requires an attribute to enable
Dec 17 18:42:52.953 INFO [stderr]  --> src/main.rs:2:31
Dec 17 18:42:52.953 INFO [stderr]   |
Dec 17 18:42:52.953 INFO [stderr] 2 |            termination_trait, use_nested_groups, universal_impl_trait)]
Dec 17 18:42:52.953 INFO [stderr]   |                               ^^^^^^^^^^^^^^^^^
Dec 17 18:42:52.953 INFO [stderr] 
Dec 17 18:42:52.953 INFO [stderr] warning: the feature `universal_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 17 18:42:52.953 INFO [stderr]  --> src/main.rs:2:50
Dec 17 18:42:52.953 INFO [stderr]   |
Dec 17 18:42:52.953 INFO [stderr] 2 |            termination_trait, use_nested_groups, universal_impl_trait)]
Dec 17 18:42:52.953 INFO [stderr]   |                                                  ^^^^^^^^^^^^^^^^^^^^
Dec 17 18:42:52.953 INFO [stderr] 
Dec 17 18:42:52.992 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.47s
Dec 17 18:42:54.192 INFO running `"docker" "inspect" "2ccdffe67b0b9bf427fb1fd56216ce5862138a868b07abb16ba772c12bb3d6a7"`
Dec 17 18:42:54.480 INFO running `"docker" "rm" "-f" "2ccdffe67b0b9bf427fb1fd56216ce5862138a868b07abb16ba772c12bb3d6a7"`
Dec 17 18:42:54.832 INFO [stdout] 2ccdffe67b0b9bf427fb1fd56216ce5862138a868b07abb16ba772c12bb3d6a7