[INFO] updating cached repository riginding/rust-hero
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/riginding/rust-hero
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/riginding/rust-hero" "work/ex/beta-1.38-1/sources/1.37.0/gh/riginding/rust-hero"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/riginding/rust-hero'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/riginding/rust-hero" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/riginding/rust-hero"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/riginding/rust-hero'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7e626ab5b2a930cc8e0f837af2e6e76c76638463
[INFO] sha for GitHub repo riginding/rust-hero: 7e626ab5b2a930cc8e0f837af2e6e76c76638463
[INFO] validating manifest of riginding/rust-hero on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of riginding/rust-hero on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing riginding/rust-hero
[INFO] finished frobbing riginding/rust-hero
[INFO] frobbed toml for riginding/rust-hero written to work/ex/beta-1.38-1/sources/1.37.0/gh/riginding/rust-hero/Cargo.toml
[INFO] started frobbing riginding/rust-hero
[INFO] finished frobbing riginding/rust-hero
[INFO] frobbed toml for riginding/rust-hero written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/riginding/rust-hero/Cargo.toml
[INFO] crate riginding/rust-hero already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing riginding/rust-hero against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/riginding/rust-hero:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 8b15b5e5824f99a3a7f9269f497a7f3889a23f3b06d8ee875f533e467b10892a
[INFO] running `"docker" "start" "-a" "8b15b5e5824f99a3a7f9269f497a7f3889a23f3b06d8ee875f533e467b10892a"`
[INFO] [stderr]    Compiling rusthero v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: struct is never constructed: `Segment`
[INFO] [stderr]  --> src/main.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | struct Segment(i32, char);
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Segments`
[INFO] [stderr]   --> src/main.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | struct Segments(pub Vec<Segment>);
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `rust_hero_solve`
[INFO] [stderr]   --> src/main.rs:25:1
[INFO] [stderr]    |
[INFO] [stderr] 25 | fn rust_hero_solve(input: &str) -> String {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `recursive_super_duper_function`
[INFO] [stderr]   --> src/main.rs:50:1
[INFO] [stderr]    |
[INFO] [stderr] 50 | fn recursive_super_duper_function(input: &str) -> String {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `"docker" "inspect" "8b15b5e5824f99a3a7f9269f497a7f3889a23f3b06d8ee875f533e467b10892a"`
[INFO] running `"docker" "rm" "-f" "8b15b5e5824f99a3a7f9269f497a7f3889a23f3b06d8ee875f533e467b10892a"`
[INFO] [stdout] 8b15b5e5824f99a3a7f9269f497a7f3889a23f3b06d8ee875f533e467b10892a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/riginding/rust-hero:/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] d47c6de298a998d6d9423768327776100fad8eb258f77567a12fed29d1050143
[INFO] running `"docker" "start" "-a" "d47c6de298a998d6d9423768327776100fad8eb258f77567a12fed29d1050143"`
[INFO] [stderr]    Compiling rusthero v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.19s
[INFO] running `"docker" "inspect" "d47c6de298a998d6d9423768327776100fad8eb258f77567a12fed29d1050143"`
[INFO] running `"docker" "rm" "-f" "d47c6de298a998d6d9423768327776100fad8eb258f77567a12fed29d1050143"`
[INFO] [stdout] d47c6de298a998d6d9423768327776100fad8eb258f77567a12fed29d1050143
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/riginding/rust-hero:/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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] fc43879e0419496fcb44d2da4fe711c42b1a1a278954ee5c6235b9c3a02e1af2
[INFO] running `"docker" "start" "-a" "fc43879e0419496fcb44d2da4fe711c42b1a1a278954ee5c6235b9c3a02e1af2"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rusthero-ff4b1ed6a075864f
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test tests::sample1 ... ok
[INFO] [stdout] test tests::hero_solve2 ... ok
[INFO] [stdout] test tests::hero_solve ... ok
[INFO] [stdout] test tests::sample3 ... ok
[INFO] [stdout] test tests::sample2 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "fc43879e0419496fcb44d2da4fe711c42b1a1a278954ee5c6235b9c3a02e1af2"`
[INFO] running `"docker" "rm" "-f" "fc43879e0419496fcb44d2da4fe711c42b1a1a278954ee5c6235b9c3a02e1af2"`
[INFO] [stdout] fc43879e0419496fcb44d2da4fe711c42b1a1a278954ee5c6235b9c3a02e1af2