Dec 17 15:16:37.303 INFO checking sivakon/rust-exp against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 15:16:37.303 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-4/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/sivakon/rust-exp:/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 15:16:37.648 INFO [stdout] afc38267b30030c0dac21f64b150166134695ee3bb8990c61ff389d20b462451
Dec 17 15:16:37.654 INFO running `"docker" "start" "-a" "afc38267b30030c0dac21f64b150166134695ee3bb8990c61ff389d20b462451"`
Dec 17 15:16:39.608 INFO [stderr]     Checking rustlvl2 v0.1.0 (/opt/crater/workdir)
Dec 17 15:16:39.685 INFO [stderr] warning: lint `unused_doc_comment` has been renamed to `unused_doc_comments`
Dec 17 15:16:39.685 INFO [stderr]   --> src/main.rs:53:9
Dec 17 15:16:39.685 INFO [stderr]    |
Dec 17 15:16:39.685 INFO [stderr] 53 | #[allow(unused_doc_comment)]
Dec 17 15:16:39.685 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^ help: use the new name: `unused_doc_comments`
Dec 17 15:16:39.685 INFO [stderr]    |
Dec 17 15:16:39.685 INFO [stderr]    = note: #[warn(renamed_and_removed_lints)] on by default
Dec 17 15:16:39.685 INFO [stderr] 
Dec 17 15:16:39.736 INFO [stderr] warning: doc comment not used by rustdoc
Dec 17 15:16:39.736 INFO [stderr]    --> src/main.rs:97:5
Dec 17 15:16:39.736 INFO [stderr]     |
Dec 17 15:16:39.736 INFO [stderr] 97  | /     /**
Dec 17 15:16:39.736 INFO [stderr] 98  | |      * this is an unused documentation step
Dec 17 15:16:39.736 INFO [stderr] 99  | |      * HASHMAP
Dec 17 15:16:39.736 INFO [stderr] 100 | |      */
Dec 17 15:16:39.736 INFO [stderr]     | |_______^
Dec 17 15:16:39.736 INFO [stderr]     |
Dec 17 15:16:39.736 INFO [stderr]     = note: #[warn(unused_doc_comments)] on by default
Dec 17 15:16:39.736 INFO [stderr] 
Dec 17 15:16:39.736 INFO [stderr] warning: doc comment not used by rustdoc
Dec 17 15:16:39.736 INFO [stderr]    --> src/main.rs:148:5
Dec 17 15:16:39.736 INFO [stderr]     |
Dec 17 15:16:39.736 INFO [stderr] 148 | /     /**
Dec 17 15:16:39.736 INFO [stderr] 149 | |      * Some exercises
Dec 17 15:16:39.736 INFO [stderr] 150 | |      */
Dec 17 15:16:39.736 INFO [stderr]     | |_______^
Dec 17 15:16:39.736 INFO [stderr] 
Dec 17 15:16:39.752 INFO [stderr] warning: lint `unused_doc_comment` has been renamed to `unused_doc_comments`
Dec 17 15:16:39.752 INFO [stderr]   --> src/main.rs:53:9
Dec 17 15:16:39.752 INFO [stderr]    |
Dec 17 15:16:39.752 INFO [stderr] 53 | #[allow(unused_doc_comment)]
Dec 17 15:16:39.752 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^ help: use the new name: `unused_doc_comments`
Dec 17 15:16:39.752 INFO [stderr]    |
Dec 17 15:16:39.752 INFO [stderr]    = note: #[warn(renamed_and_removed_lints)] on by default
Dec 17 15:16:39.752 INFO [stderr] 
Dec 17 15:16:39.832 INFO [stderr] warning: doc comment not used by rustdoc
Dec 17 15:16:39.832 INFO [stderr]    --> src/main.rs:97:5
Dec 17 15:16:39.832 INFO [stderr]     |
Dec 17 15:16:39.832 INFO [stderr] 97  | /     /**
Dec 17 15:16:39.832 INFO [stderr] 98  | |      * this is an unused documentation step
Dec 17 15:16:39.832 INFO [stderr] 99  | |      * HASHMAP
Dec 17 15:16:39.832 INFO [stderr] 100 | |      */
Dec 17 15:16:39.832 INFO [stderr]     | |_______^
Dec 17 15:16:39.832 INFO [stderr]     |
Dec 17 15:16:39.832 INFO [stderr]     = note: #[warn(unused_doc_comments)] on by default
Dec 17 15:16:39.832 INFO [stderr] 
Dec 17 15:16:39.832 INFO [stderr] warning: doc comment not used by rustdoc
Dec 17 15:16:39.832 INFO [stderr]    --> src/main.rs:148:5
Dec 17 15:16:39.832 INFO [stderr]     |
Dec 17 15:16:39.832 INFO [stderr] 148 | /     /**
Dec 17 15:16:39.832 INFO [stderr] 149 | |      * Some exercises
Dec 17 15:16:39.832 INFO [stderr] 150 | |      */
Dec 17 15:16:39.832 INFO [stderr]     | |_______^
Dec 17 15:16:39.832 INFO [stderr] 
Dec 17 15:16:40.069 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.48s
Dec 17 15:16:40.524 INFO running `"docker" "inspect" "afc38267b30030c0dac21f64b150166134695ee3bb8990c61ff389d20b462451"`
Dec 17 15:16:40.842 INFO running `"docker" "rm" "-f" "afc38267b30030c0dac21f64b150166134695ee3bb8990c61ff389d20b462451"`
Dec 17 15:16:41.080 INFO [stdout] afc38267b30030c0dac21f64b150166134695ee3bb8990c61ff389d20b462451