[INFO] updating cached repository Meyhem/rust-sdl2-gol
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Meyhem/rust-sdl2-gol
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Meyhem/rust-sdl2-gol" "work/ex/beta-1.38-1/sources/1.37.0/gh/Meyhem/rust-sdl2-gol"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Meyhem/rust-sdl2-gol'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Meyhem/rust-sdl2-gol" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Meyhem/rust-sdl2-gol"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Meyhem/rust-sdl2-gol'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 41569aa9a517ff9b158e39288172a56a3a3b4992
[INFO] sha for GitHub repo Meyhem/rust-sdl2-gol: 41569aa9a517ff9b158e39288172a56a3a3b4992
[INFO] validating manifest of Meyhem/rust-sdl2-gol 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 Meyhem/rust-sdl2-gol 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 Meyhem/rust-sdl2-gol
[INFO] finished frobbing Meyhem/rust-sdl2-gol
[INFO] frobbed toml for Meyhem/rust-sdl2-gol written to work/ex/beta-1.38-1/sources/1.37.0/gh/Meyhem/rust-sdl2-gol/Cargo.toml
[INFO] started frobbing Meyhem/rust-sdl2-gol
[INFO] finished frobbing Meyhem/rust-sdl2-gol
[INFO] frobbed toml for Meyhem/rust-sdl2-gol written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Meyhem/rust-sdl2-gol/Cargo.toml
[INFO] crate Meyhem/rust-sdl2-gol 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 Meyhem/rust-sdl2-gol 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/Meyhem/rust-sdl2-gol:/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] 6fa44563bc1af83870a6bdbd91c65637243ca730a6f6690d7602ce57157ed2e3
[INFO] running `"docker" "start" "-a" "6fa44563bc1af83870a6bdbd91c65637243ca730a6f6690d7602ce57157ed2e3"`
[INFO] [stderr]    Compiling sdl2-sys v0.32.1
[INFO] [stderr]    Compiling sdl2 v0.32.0-beta.2
[INFO] [stderr]    Compiling rust-sdl2-gol v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: value assigned to `current_tick` is never read
[INFO] [stderr]   --> src/main.rs:82:13
[INFO] [stderr]    |
[INFO] [stderr] 82 |     let mut current_tick = Instant::now();
[INFO] [stderr]    |             ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `dump_matrix`
[INFO] [stderr]   --> src/life_engine.rs:93:5
[INFO] [stderr]    |
[INFO] [stderr] 93 |     pub fn dump_matrix(&self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.99s
[INFO] running `"docker" "inspect" "6fa44563bc1af83870a6bdbd91c65637243ca730a6f6690d7602ce57157ed2e3"`
[INFO] running `"docker" "rm" "-f" "6fa44563bc1af83870a6bdbd91c65637243ca730a6f6690d7602ce57157ed2e3"`
[INFO] [stdout] 6fa44563bc1af83870a6bdbd91c65637243ca730a6f6690d7602ce57157ed2e3
[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/Meyhem/rust-sdl2-gol:/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] f761934c6e46b1aefd46887b2f8a871da3edc5f31bc125bd833a0f6e7592d779
[INFO] running `"docker" "start" "-a" "f761934c6e46b1aefd46887b2f8a871da3edc5f31bc125bd833a0f6e7592d779"`
[INFO] [stderr]    Compiling rust-sdl2-gol v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: value assigned to `current_tick` is never read
[INFO] [stderr]   --> src/main.rs:82:13
[INFO] [stderr]    |
[INFO] [stderr] 82 |     let mut current_tick = Instant::now();
[INFO] [stderr]    |             ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `dump_matrix`
[INFO] [stderr]   --> src/life_engine.rs:93:5
[INFO] [stderr]    |
[INFO] [stderr] 93 |     pub fn dump_matrix(&self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.16s
[INFO] running `"docker" "inspect" "f761934c6e46b1aefd46887b2f8a871da3edc5f31bc125bd833a0f6e7592d779"`
[INFO] running `"docker" "rm" "-f" "f761934c6e46b1aefd46887b2f8a871da3edc5f31bc125bd833a0f6e7592d779"`
[INFO] [stdout] f761934c6e46b1aefd46887b2f8a871da3edc5f31bc125bd833a0f6e7592d779
[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/Meyhem/rust-sdl2-gol:/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] 503d6f2f0241c5860dc19ce3d60f1652ae612541f2904e3060a5d7f1898cf441
[INFO] running `"docker" "start" "-a" "503d6f2f0241c5860dc19ce3d60f1652ae612541f2904e3060a5d7f1898cf441"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_sdl2_gol-ab7ad8a37d600a57
[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" "503d6f2f0241c5860dc19ce3d60f1652ae612541f2904e3060a5d7f1898cf441"`
[INFO] running `"docker" "rm" "-f" "503d6f2f0241c5860dc19ce3d60f1652ae612541f2904e3060a5d7f1898cf441"`
[INFO] [stdout] 503d6f2f0241c5860dc19ce3d60f1652ae612541f2904e3060a5d7f1898cf441