[INFO] updating cached repository sivakon/rust-exp
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/sivakon/rust-exp
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/sivakon/rust-exp" "work/ex/pr-57617/sources/master#e2f221c75932de7a29845c8d6f1f73536ad00c41/gh/sivakon/rust-exp"`
[INFO] [stderr] Cloning into 'work/ex/pr-57617/sources/master#e2f221c75932de7a29845c8d6f1f73536ad00c41/gh/sivakon/rust-exp'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/sivakon/rust-exp" "work/ex/pr-57617/sources/try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff/gh/sivakon/rust-exp"`
[INFO] [stderr] Cloning into 'work/ex/pr-57617/sources/try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff/gh/sivakon/rust-exp'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6411253d18b8a00ba05b0b068ed9a3b91a8a859d
[INFO] sha for GitHub repo sivakon/rust-exp: 6411253d18b8a00ba05b0b068ed9a3b91a8a859d
[INFO] validating manifest of sivakon/rust-exp on toolchain master#e2f221c75932de7a29845c8d6f1f73536ad00c41
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e2f221c75932de7a29845c8d6f1f73536ad00c41-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of sivakon/rust-exp on toolchain try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0bfb90d213a93e466b33d078a5b535a2a6f9c5ff-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing sivakon/rust-exp
[INFO] finished frobbing sivakon/rust-exp
[INFO] frobbed toml for sivakon/rust-exp written to work/ex/pr-57617/sources/master#e2f221c75932de7a29845c8d6f1f73536ad00c41/gh/sivakon/rust-exp/Cargo.toml
[INFO] started frobbing sivakon/rust-exp
[INFO] finished frobbing sivakon/rust-exp
[INFO] frobbed toml for sivakon/rust-exp written to work/ex/pr-57617/sources/try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff/gh/sivakon/rust-exp/Cargo.toml
[INFO] crate sivakon/rust-exp has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e2f221c75932de7a29845c8d6f1f73536ad00c41-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0bfb90d213a93e466b33d078a5b535a2a6f9c5ff-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking sivakon/rust-exp against try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff for pr-57617
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57617/worker-5/try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57617/sources/try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff/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" "+0bfb90d213a93e466b33d078a5b535a2a6f9c5ff-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] dcf1e3035323c7ce6127cc3f856d4506122ea36d21176e43405ff242c0e1c7fa
[INFO] running `"docker" "start" "-a" "dcf1e3035323c7ce6127cc3f856d4506122ea36d21176e43405ff242c0e1c7fa"`
[INFO] [stderr]     Checking rustlvl2 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: lint `unused_doc_comment` has been renamed to `unused_doc_comments`
[INFO] [stderr]   --> src/main.rs:53:9
[INFO] [stderr]    |
[INFO] [stderr] 53 | #[allow(unused_doc_comment)]
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^ help: use the new name: `unused_doc_comments`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(renamed_and_removed_lints)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: lint `unused_doc_comment` has been renamed to `unused_doc_comments`
[INFO] [stderr]   --> src/main.rs:53:9
[INFO] [stderr]    |
[INFO] [stderr] 53 | #[allow(unused_doc_comment)]
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^ help: use the new name: `unused_doc_comments`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(renamed_and_removed_lints)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: doc comment not used by rustdoc
[INFO] [stderr]    --> src/main.rs:97:5
[INFO] [stderr]     |
[INFO] [stderr] 97  | /     /**
[INFO] [stderr] 98  | |      * this is an unused documentation step
[INFO] [stderr] 99  | |      * HASHMAP
[INFO] [stderr] 100 | |      */
[INFO] [stderr]     | |_______^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_doc_comments)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: doc comment not used by rustdoc
[INFO] [stderr]    --> src/main.rs:148:5
[INFO] [stderr]     |
[INFO] [stderr] 148 | /     /**
[INFO] [stderr] 149 | |      * Some exercises
[INFO] [stderr] 150 | |      */
[INFO] [stderr]     | |_______^
[INFO] [stderr] 
[INFO] [stderr] warning: doc comment not used by rustdoc
[INFO] [stderr]    --> src/main.rs:97:5
[INFO] [stderr]     |
[INFO] [stderr] 97  | /     /**
[INFO] [stderr] 98  | |      * this is an unused documentation step
[INFO] [stderr] 99  | |      * HASHMAP
[INFO] [stderr] 100 | |      */
[INFO] [stderr]     | |_______^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_doc_comments)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: doc comment not used by rustdoc
[INFO] [stderr]    --> src/main.rs:148:5
[INFO] [stderr]     |
[INFO] [stderr] 148 | /     /**
[INFO] [stderr] 149 | |      * Some exercises
[INFO] [stderr] 150 | |      */
[INFO] [stderr]     | |_______^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `"docker" "inspect" "dcf1e3035323c7ce6127cc3f856d4506122ea36d21176e43405ff242c0e1c7fa"`
[INFO] running `"docker" "rm" "-f" "dcf1e3035323c7ce6127cc3f856d4506122ea36d21176e43405ff242c0e1c7fa"`
[INFO] [stdout] dcf1e3035323c7ce6127cc3f856d4506122ea36d21176e43405ff242c0e1c7fa