[INFO] crate nestools 1.3.1 is already in cache
[INFO] extracting crate nestools 1.3.1 into work/ex/beta-1.37-6/sources/1.36.0/reg/nestools/1.3.1
[INFO] extracting crate nestools 1.3.1 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/nestools/1.3.1
[INFO] validating manifest of nestools-1.3.1 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of nestools-1.3.1 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing nestools-1.3.1
[INFO] finished frobbing nestools-1.3.1
[INFO] frobbed toml for nestools-1.3.1 written to work/ex/beta-1.37-6/sources/1.36.0/reg/nestools/1.3.1/Cargo.toml
[INFO] started frobbing nestools-1.3.1
[INFO] finished frobbing nestools-1.3.1
[INFO] frobbed toml for nestools-1.3.1 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/nestools/1.3.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing nestools-1.3.1 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/nestools/1.3.1:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] ccaebeec163e8271b1e574a9332660a00c2677f8afed935b1fbf5a922f5137b1
[INFO] running `"docker" "start" "-a" "ccaebeec163e8271b1e574a9332660a00c2677f8afed935b1fbf5a922f5137b1"`
[INFO] [stderr]    Compiling lodepng v2.4.2
[INFO] [stderr]    Compiling nestools v1.3.1 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/sprites/sheet.rs:78:21
[INFO] [stderr]    |
[INFO] [stderr] 78 |                 let mut tile_number = (y * width) + x;
[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/sprites/sheet.rs:132:25
[INFO] [stderr]     |
[INFO] [stderr] 132 |                     let mut tile_number = frame_offset + y_offset + x;
[INFO] [stderr]     |                         ----^^^^^^^^^^^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.55s
[INFO] running `"docker" "inspect" "ccaebeec163e8271b1e574a9332660a00c2677f8afed935b1fbf5a922f5137b1"`
[INFO] running `"docker" "rm" "-f" "ccaebeec163e8271b1e574a9332660a00c2677f8afed935b1fbf5a922f5137b1"`
[INFO] [stdout] ccaebeec163e8271b1e574a9332660a00c2677f8afed935b1fbf5a922f5137b1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/nestools/1.3.1:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 03417769df4109ed0681143308f2afde60d0a580de9595af098149a89c3989b2
[INFO] running `"docker" "start" "-a" "03417769df4109ed0681143308f2afde60d0a580de9595af098149a89c3989b2"`
[INFO] [stderr]    Compiling nestools v1.3.1 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/sprites/sheet.rs:78:21
[INFO] [stderr]    |
[INFO] [stderr] 78 |                 let mut tile_number = (y * width) + x;
[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/sprites/sheet.rs:132:25
[INFO] [stderr]     |
[INFO] [stderr] 132 |                     let mut tile_number = frame_offset + y_offset + x;
[INFO] [stderr]     |                         ----^^^^^^^^^^^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.07s
[INFO] running `"docker" "inspect" "03417769df4109ed0681143308f2afde60d0a580de9595af098149a89c3989b2"`
[INFO] running `"docker" "rm" "-f" "03417769df4109ed0681143308f2afde60d0a580de9595af098149a89c3989b2"`
[INFO] [stdout] 03417769df4109ed0681143308f2afde60d0a580de9595af098149a89c3989b2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/nestools/1.3.1:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 0f1867eae4d0d6022e7b85ef693ebc8e0edb3a1103df0b1d03c083e6f47d9b8d
[INFO] running `"docker" "start" "-a" "0f1867eae4d0d6022e7b85ef693ebc8e0edb3a1103df0b1d03c083e6f47d9b8d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/nestools-e2c0e52ee4342a77
[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] [stderr]      Running /opt/crater/target/debug/deps/spritesheetc-5e7ca07a5425ad98
[INFO] [stderr]    Doc-tests nestools
[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] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/sprites/mod.rs - sprites::Tile::from_bytes (line 117) ... ok
[INFO] [stdout] test src/sprites/mod.rs - sprites::Tile::iter (line 70) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "0f1867eae4d0d6022e7b85ef693ebc8e0edb3a1103df0b1d03c083e6f47d9b8d"`
[INFO] running `"docker" "rm" "-f" "0f1867eae4d0d6022e7b85ef693ebc8e0edb3a1103df0b1d03c083e6f47d9b8d"`
[INFO] [stdout] 0f1867eae4d0d6022e7b85ef693ebc8e0edb3a1103df0b1d03c083e6f47d9b8d