[INFO] cloning repository patrickgombert/tetris
[INFO] running `"git" "clone" "--bare" "git://github.com/patrickgombert/tetris.git" "work/cache/sources/gh/patrickgombert/tetris"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/patrickgombert/tetris'...
[INFO] running `"git" "clone" "work/cache/sources/gh/patrickgombert/tetris" "work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/patrickgombert/tetris"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/patrickgombert/tetris'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/patrickgombert/tetris" "work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/patrickgombert/tetris"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/patrickgombert/tetris'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ba13d36550580bf7876f37d3632da77aeaa2b1fb
[INFO] sha for GitHub repo patrickgombert/tetris: ba13d36550580bf7876f37d3632da77aeaa2b1fb
[INFO] validating manifest of patrickgombert/tetris on toolchain master#c0086b9e8972fef9fd4af24bae20d45021ed06c6
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of patrickgombert/tetris on toolchain try#290ac7b29f41ff9fa5232f9a1116ea71a3501063
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing patrickgombert/tetris
[INFO] finished frobbing patrickgombert/tetris
[INFO] frobbed toml for patrickgombert/tetris written to work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/patrickgombert/tetris/Cargo.toml
[INFO] started frobbing patrickgombert/tetris
[INFO] finished frobbing patrickgombert/tetris
[INFO] frobbed toml for patrickgombert/tetris written to work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/patrickgombert/tetris/Cargo.toml
[INFO] crate patrickgombert/tetris has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking patrickgombert/tetris against try#290ac7b29f41ff9fa5232f9a1116ea71a3501063 for pr-58899
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58899/worker-4/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/patrickgombert/tetris:/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=forbid" "-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" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 5de72dbe6216dba053f7d572faaadf719b59c7657ef12edbf012516ad8b4fc34
[INFO] running `"docker" "start" "-a" "5de72dbe6216dba053f7d572faaadf719b59c7657ef12edbf012516ad8b4fc34"`
[INFO] [stderr]     Checking log v0.4.5
[INFO] [stderr]    Compiling gl_generator v0.9.0
[INFO] [stderr]     Checking image v0.19.0
[INFO] [stderr]     Checking rand v0.6.1
[INFO] [stderr]     Checking gfx_core v0.8.3
[INFO] [stderr]    Compiling gfx_gl v0.5.0
[INFO] [stderr]     Checking gfx_device_gl v0.15.3
[INFO] [stderr]     Checking gfx v0.17.1
[INFO] [stderr]     Checking gfx_glyph v0.10.2
[INFO] [stderr]     Checking gfx_window_sdl v0.8.0
[INFO] [stderr]     Checking ggez v0.4.4
[INFO] [stderr]     Checking tetris v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/tetris/grid.rs:97:17
[INFO] [stderr]    |
[INFO] [stderr] 97 |             let mut dead_lines: Vec<&i8> = line_counts
[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 does not need to be mutable
[INFO] [stderr]   --> src/tetris/grid.rs:97:17
[INFO] [stderr]    |
[INFO] [stderr] 97 |             let mut dead_lines: Vec<&i8> = line_counts
[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]     Finished dev [unoptimized + debuginfo] target(s) in 52.22s
[INFO] running `"docker" "inspect" "5de72dbe6216dba053f7d572faaadf719b59c7657ef12edbf012516ad8b4fc34"`
[INFO] running `"docker" "rm" "-f" "5de72dbe6216dba053f7d572faaadf719b59c7657ef12edbf012516ad8b4fc34"`
[INFO] [stdout] 5de72dbe6216dba053f7d572faaadf719b59c7657ef12edbf012516ad8b4fc34