[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 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] ce96dbddd756517505513d20fb9ea974f92042200ae6af6b9d009bf153cbd7e9
[INFO] running `"docker" "start" "-a" "ce96dbddd756517505513d20fb9ea974f92042200ae6af6b9d009bf153cbd7e9"`
[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 12.22s
[INFO] running `"docker" "inspect" "ce96dbddd756517505513d20fb9ea974f92042200ae6af6b9d009bf153cbd7e9"`
[INFO] running `"docker" "rm" "-f" "ce96dbddd756517505513d20fb9ea974f92042200ae6af6b9d009bf153cbd7e9"`
[INFO] [stdout] ce96dbddd756517505513d20fb9ea974f92042200ae6af6b9d009bf153cbd7e9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 922935a142ea67792a3c9bdc88ba72a585781e731cb8e1387c9239c4f9d7461a
[INFO] running `"docker" "start" "-a" "922935a142ea67792a3c9bdc88ba72a585781e731cb8e1387c9239c4f9d7461a"`
[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 1.13s
[INFO] running `"docker" "inspect" "922935a142ea67792a3c9bdc88ba72a585781e731cb8e1387c9239c4f9d7461a"`
[INFO] running `"docker" "rm" "-f" "922935a142ea67792a3c9bdc88ba72a585781e731cb8e1387c9239c4f9d7461a"`
[INFO] [stdout] 922935a142ea67792a3c9bdc88ba72a585781e731cb8e1387c9239c4f9d7461a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] a199e2c9a6ec5aea8a27a3c87b18c6c25781633d32d4dfc8e44e81ba2ef87af1
[INFO] running `"docker" "start" "-a" "a199e2c9a6ec5aea8a27a3c87b18c6c25781633d32d4dfc8e44e81ba2ef87af1"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_sdl2_gol-a3fbb650ba416aff
[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" "a199e2c9a6ec5aea8a27a3c87b18c6c25781633d32d4dfc8e44e81ba2ef87af1"`
[INFO] running `"docker" "rm" "-f" "a199e2c9a6ec5aea8a27a3c87b18c6c25781633d32d4dfc8e44e81ba2ef87af1"`
[INFO] [stdout] a199e2c9a6ec5aea8a27a3c87b18c6c25781633d32d4dfc8e44e81ba2ef87af1