[INFO] updating cached repository notryanb/rust_snake
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/notryanb/rust_snake
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/notryanb/rust_snake" "work/ex/beta-1.38-1/sources/1.37.0/gh/notryanb/rust_snake"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/notryanb/rust_snake'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/notryanb/rust_snake" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/notryanb/rust_snake"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/notryanb/rust_snake'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e587778a994fc846f9b6c94269d95ac0795e5fd7
[INFO] sha for GitHub repo notryanb/rust_snake: e587778a994fc846f9b6c94269d95ac0795e5fd7
[INFO] validating manifest of notryanb/rust_snake 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 notryanb/rust_snake 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 notryanb/rust_snake
[INFO] finished frobbing notryanb/rust_snake
[INFO] frobbed toml for notryanb/rust_snake written to work/ex/beta-1.38-1/sources/1.37.0/gh/notryanb/rust_snake/Cargo.toml
[INFO] started frobbing notryanb/rust_snake
[INFO] finished frobbing notryanb/rust_snake
[INFO] frobbed toml for notryanb/rust_snake written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/notryanb/rust_snake/Cargo.toml
[INFO] crate notryanb/rust_snake 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 notryanb/rust_snake 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-4/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/notryanb/rust_snake:/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] 2036e1f226c3528e9348336b33f644e7b6574a551195f4259083afab6a2508c5
[INFO] running `"docker" "start" "-a" "2036e1f226c3528e9348336b33f644e7b6574a551195f4259083afab6a2508c5"`
[INFO] [stderr]    Compiling termion v1.5.1
[INFO] [stderr]    Compiling rust_snake v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `style`
[INFO] [stderr]  --> src/board.rs:3:22
[INFO] [stderr]   |
[INFO] [stderr] 3 | use termion::{color, style};
[INFO] [stderr]   |                      ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `color`, `style`
[INFO] [stderr]  --> src/main.rs:6:15
[INFO] [stderr]   |
[INFO] [stderr] 6 | use termion::{color,style};
[INFO] [stderr]   |               ^^^^^ ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `width`
[INFO] [stderr]   --> src/board.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     width: i32,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/board.rs:59:13
[INFO] [stderr]    |
[INFO] [stderr] 59 | /             match cell.x % self.height {
[INFO] [stderr] 60 | |                 0 => write!(f, "{}\n", color::Fg(color::Green)),
[INFO] [stderr] 61 | |                 _ => write!(f, "{}", color::Fg(color::Blue))
[INFO] [stderr] 62 | |             };
[INFO] [stderr]    | |______________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.61s
[INFO] running `"docker" "inspect" "2036e1f226c3528e9348336b33f644e7b6574a551195f4259083afab6a2508c5"`
[INFO] running `"docker" "rm" "-f" "2036e1f226c3528e9348336b33f644e7b6574a551195f4259083afab6a2508c5"`
[INFO] [stdout] 2036e1f226c3528e9348336b33f644e7b6574a551195f4259083afab6a2508c5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/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/notryanb/rust_snake:/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] 3d08a4f96126769312b4f3e0cfbccd45ca578ea7e7fd3de3579d4a18105ed9f9
[INFO] running `"docker" "start" "-a" "3d08a4f96126769312b4f3e0cfbccd45ca578ea7e7fd3de3579d4a18105ed9f9"`
[INFO] [stderr]    Compiling rust_snake v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `style`
[INFO] [stderr]  --> src/board.rs:3:22
[INFO] [stderr]   |
[INFO] [stderr] 3 | use termion::{color, style};
[INFO] [stderr]   |                      ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `color`, `style`
[INFO] [stderr]  --> src/main.rs:6:15
[INFO] [stderr]   |
[INFO] [stderr] 6 | use termion::{color,style};
[INFO] [stderr]   |               ^^^^^ ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `grid`
[INFO] [stderr]   --> src/board.rs:77:13
[INFO] [stderr]    |
[INFO] [stderr] 77 |         let grid: Vec<Cell> = Vec::with_capacity((width * height) as usize);
[INFO] [stderr]    |             ^^^^ help: consider prefixing with an underscore: `_grid`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/board.rs:59:13
[INFO] [stderr]    |
[INFO] [stderr] 59 | /             match cell.x % self.height {
[INFO] [stderr] 60 | |                 0 => write!(f, "{}\n", color::Fg(color::Green)),
[INFO] [stderr] 61 | |                 _ => write!(f, "{}", color::Fg(color::Blue))
[INFO] [stderr] 62 | |             };
[INFO] [stderr]    | |______________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `"docker" "inspect" "3d08a4f96126769312b4f3e0cfbccd45ca578ea7e7fd3de3579d4a18105ed9f9"`
[INFO] running `"docker" "rm" "-f" "3d08a4f96126769312b4f3e0cfbccd45ca578ea7e7fd3de3579d4a18105ed9f9"`
[INFO] [stdout] 3d08a4f96126769312b4f3e0cfbccd45ca578ea7e7fd3de3579d4a18105ed9f9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/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/notryanb/rust_snake:/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] 67d9839f342e814ae42ccd37c4bbd504aa6162be59cd63bead17e96a3e998f52
[INFO] running `"docker" "start" "-a" "67d9839f342e814ae42ccd37c4bbd504aa6162be59cd63bead17e96a3e998f52"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_snake-0c5af347f9db226d
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test board::tests::new_board ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "67d9839f342e814ae42ccd37c4bbd504aa6162be59cd63bead17e96a3e998f52"`
[INFO] running `"docker" "rm" "-f" "67d9839f342e814ae42ccd37c4bbd504aa6162be59cd63bead17e96a3e998f52"`
[INFO] [stdout] 67d9839f342e814ae42ccd37c4bbd504aa6162be59cd63bead17e96a3e998f52