[INFO] updating cached repository andymaster01/tetris-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/andymaster01/tetris-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/andymaster01/tetris-rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/andymaster01/tetris-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/andymaster01/tetris-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/andymaster01/tetris-rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/andymaster01/tetris-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/andymaster01/tetris-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 112bc50cc9f09937e83878593c2c6eff53a2578a
[INFO] sha for GitHub repo andymaster01/tetris-rust: 112bc50cc9f09937e83878593c2c6eff53a2578a
[INFO] validating manifest of andymaster01/tetris-rust 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 andymaster01/tetris-rust 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 andymaster01/tetris-rust
[INFO] finished frobbing andymaster01/tetris-rust
[INFO] frobbed toml for andymaster01/tetris-rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/andymaster01/tetris-rust/Cargo.toml
[INFO] started frobbing andymaster01/tetris-rust
[INFO] finished frobbing andymaster01/tetris-rust
[INFO] frobbed toml for andymaster01/tetris-rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/andymaster01/tetris-rust/Cargo.toml
[INFO] crate andymaster01/tetris-rust 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 andymaster01/tetris-rust 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-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/andymaster01/tetris-rust:/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] 6a7d2f57b0e61ae8d93d2a5d01fa55e011ebdf92022e034e8ee6ae1fad008bb0
[INFO] running `"docker" "start" "-a" "6a7d2f57b0e61ae8d93d2a5d01fa55e011ebdf92022e034e8ee6ae1fad008bb0"`
[INFO] [stderr]    Compiling csfml-system-sys v0.1.0 (https://github.com/jeremyletang/rust-sfml.git#ba02f79e)
[INFO] [stderr]    Compiling csfml-window-sys v0.1.1 (https://github.com/jeremyletang/rust-sfml.git#ba02f79e)
[INFO] [stderr]    Compiling csfml-audio-sys v0.1.0 (https://github.com/jeremyletang/rust-sfml.git#ba02f79e)
[INFO] [stderr]    Compiling csfml-network-sys v0.1.0 (https://github.com/jeremyletang/rust-sfml.git#ba02f79e)
[INFO] [stderr]    Compiling csfml-graphics-sys v0.1.0 (https://github.com/jeremyletang/rust-sfml.git#ba02f79e)
[INFO] [stderr]    Compiling sfml v0.11.1 (https://github.com/jeremyletang/rust-sfml.git#ba02f79e)
[INFO] [stderr]    Compiling tetris-rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `M`
[INFO] [stderr]  --> src/main.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let M:i32 = 20;
[INFO] [stderr]   |         ^ help: consider prefixing with an underscore: `_M`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `N`
[INFO] [stderr]  --> src/main.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let N:i32 = 10;
[INFO] [stderr]   |         ^ help: consider prefixing with an underscore: `_N`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `field`
[INFO] [stderr]   --> src/main.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let field: [[i32; 4]; 4]; 
[INFO] [stderr]    |         ^^^^^ help: consider prefixing with an underscore: `_field`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]   --> src/main.rs:28:13
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let mut b: [Point; 4] = [Point{x:0, y:0}; 4];
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let mut b: [Point; 4] = [Point{x:0, y:0}; 4];
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `M` should have a snake case name
[INFO] [stderr]  --> src/main.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let M:i32 = 20;
[INFO] [stderr]   |         ^ help: convert the identifier to snake case: `m`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `N` should have a snake case name
[INFO] [stderr]  --> src/main.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let N:i32 = 10;
[INFO] [stderr]   |         ^ help: convert the identifier to snake case: `n`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.94s
[INFO] running `"docker" "inspect" "6a7d2f57b0e61ae8d93d2a5d01fa55e011ebdf92022e034e8ee6ae1fad008bb0"`
[INFO] running `"docker" "rm" "-f" "6a7d2f57b0e61ae8d93d2a5d01fa55e011ebdf92022e034e8ee6ae1fad008bb0"`
[INFO] [stdout] 6a7d2f57b0e61ae8d93d2a5d01fa55e011ebdf92022e034e8ee6ae1fad008bb0
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/andymaster01/tetris-rust:/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] 39c64106ca697723c8a1ee94a5cc1b20b5047b47442924e438b321502e518dac
[INFO] running `"docker" "start" "-a" "39c64106ca697723c8a1ee94a5cc1b20b5047b47442924e438b321502e518dac"`
[INFO] [stderr]    Compiling tetris-rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `M`
[INFO] [stderr]  --> src/main.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let M:i32 = 20;
[INFO] [stderr]   |         ^ help: consider prefixing with an underscore: `_M`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `N`
[INFO] [stderr]  --> src/main.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let N:i32 = 10;
[INFO] [stderr]   |         ^ help: consider prefixing with an underscore: `_N`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `field`
[INFO] [stderr]   --> src/main.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let field: [[i32; 4]; 4]; 
[INFO] [stderr]    |         ^^^^^ help: consider prefixing with an underscore: `_field`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]   --> src/main.rs:28:13
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let mut b: [Point; 4] = [Point{x:0, y:0}; 4];
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let mut b: [Point; 4] = [Point{x:0, y:0}; 4];
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `M` should have a snake case name
[INFO] [stderr]  --> src/main.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let M:i32 = 20;
[INFO] [stderr]   |         ^ help: convert the identifier to snake case: `m`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `N` should have a snake case name
[INFO] [stderr]  --> src/main.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let N:i32 = 10;
[INFO] [stderr]   |         ^ help: convert the identifier to snake case: `n`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.05s
[INFO] running `"docker" "inspect" "39c64106ca697723c8a1ee94a5cc1b20b5047b47442924e438b321502e518dac"`
[INFO] running `"docker" "rm" "-f" "39c64106ca697723c8a1ee94a5cc1b20b5047b47442924e438b321502e518dac"`
[INFO] [stdout] 39c64106ca697723c8a1ee94a5cc1b20b5047b47442924e438b321502e518dac
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/andymaster01/tetris-rust:/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] 1244a60d59276d4ce71bb97a044e3e1367956d61ee0137d108ec6a147b8f17df
[INFO] running `"docker" "start" "-a" "1244a60d59276d4ce71bb97a044e3e1367956d61ee0137d108ec6a147b8f17df"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/tetris_rust-92402d92afbe5e0c
[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" "1244a60d59276d4ce71bb97a044e3e1367956d61ee0137d108ec6a147b8f17df"`
[INFO] running `"docker" "rm" "-f" "1244a60d59276d4ce71bb97a044e3e1367956d61ee0137d108ec6a147b8f17df"`
[INFO] [stdout] 1244a60d59276d4ce71bb97a044e3e1367956d61ee0137d108ec6a147b8f17df