[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/beta-1.37-6/sources/1.36.0/gh/sivakon/rust-exp"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/sivakon/rust-exp'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/sivakon/rust-exp" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/sivakon/rust-exp"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/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 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of sivakon/rust-exp on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "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/beta-1.37-6/sources/1.36.0/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/beta-1.37-6/sources/beta-2019-07-23/gh/sivakon/rust-exp/Cargo.toml
[INFO] crate sivakon/rust-exp already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing sivakon/rust-exp against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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=warn" "-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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] a5c2a33e3a8d3586b864ad036c8232cb33d74a56259e87ecd438bad2d4cfb564
[INFO] running `"docker" "start" "-a" "a5c2a33e3a8d3586b864ad036c8232cb33d74a56259e87ecd438bad2d4cfb564"`
[INFO] [stderr]    Compiling 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: unused doc comment
[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] 103 |       let mut scores = HashMap::new();
[INFO] [stderr]     |       -------------------------------- rustdoc does not generate documentation for statements
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_doc_comments)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/main.rs:148:5
[INFO] [stderr]     |
[INFO] [stderr] 148 | /     /**
[INFO] [stderr] 149 | |      * Some exercises
[INFO] [stderr] 150 | |      */
[INFO] [stderr]     | |_______^
[INFO] [stderr] 151 |       let v = vec![1,2,3,4,5];
[INFO] [stderr]     |       ------------------------ rustdoc does not generate documentation for statements
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.42s
[INFO] running `"docker" "inspect" "a5c2a33e3a8d3586b864ad036c8232cb33d74a56259e87ecd438bad2d4cfb564"`
[INFO] running `"docker" "rm" "-f" "a5c2a33e3a8d3586b864ad036c8232cb33d74a56259e87ecd438bad2d4cfb564"`
[INFO] [stdout] a5c2a33e3a8d3586b864ad036c8232cb33d74a56259e87ecd438bad2d4cfb564
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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=warn" "-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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 96539a77fc02145de3275a631eba980566f7a241420b35efe992cdac33a8dc01
[INFO] running `"docker" "start" "-a" "96539a77fc02145de3275a631eba980566f7a241420b35efe992cdac33a8dc01"`
[INFO] [stderr]    Compiling 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: unused doc comment
[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] 103 |       let mut scores = HashMap::new();
[INFO] [stderr]     |       -------------------------------- rustdoc does not generate documentation for statements
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_doc_comments)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/main.rs:148:5
[INFO] [stderr]     |
[INFO] [stderr] 148 | /     /**
[INFO] [stderr] 149 | |      * Some exercises
[INFO] [stderr] 150 | |      */
[INFO] [stderr]     | |_______^
[INFO] [stderr] 151 |       let v = vec![1,2,3,4,5];
[INFO] [stderr]     |       ------------------------ rustdoc does not generate documentation for statements
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `"docker" "inspect" "96539a77fc02145de3275a631eba980566f7a241420b35efe992cdac33a8dc01"`
[INFO] running `"docker" "rm" "-f" "96539a77fc02145de3275a631eba980566f7a241420b35efe992cdac33a8dc01"`
[INFO] [stdout] 96539a77fc02145de3275a631eba980566f7a241420b35efe992cdac33a8dc01
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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=warn" "-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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 74e32560f65143fcca7db72ef1af7ec27fb46f83c67c3b8d804359fd2a93e397
[INFO] running `"docker" "start" "-a" "74e32560f65143fcca7db72ef1af7ec27fb46f83c67c3b8d804359fd2a93e397"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rustlvl2-b94a5656390d13e8
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "74e32560f65143fcca7db72ef1af7ec27fb46f83c67c3b8d804359fd2a93e397"`
[INFO] running `"docker" "rm" "-f" "74e32560f65143fcca7db72ef1af7ec27fb46f83c67c3b8d804359fd2a93e397"`
[INFO] [stdout] 74e32560f65143fcca7db72ef1af7ec27fb46f83c67c3b8d804359fd2a93e397