[INFO] updating cached repository ashfordneil/2048-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ashfordneil/2048-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ashfordneil/2048-rust" "work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/ashfordneil/2048-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/ashfordneil/2048-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ashfordneil/2048-rust" "work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/ashfordneil/2048-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/ashfordneil/2048-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4346ff7de1ea7d8622510199de6e8d4992d3350f
[INFO] sha for GitHub repo ashfordneil/2048-rust: 4346ff7de1ea7d8622510199de6e8d4992d3350f
[INFO] validating manifest of ashfordneil/2048-rust on toolchain master#0f88167f89fffe321590c5148f21b7d51d44388d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ashfordneil/2048-rust on toolchain try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ashfordneil/2048-rust
[INFO] finished frobbing ashfordneil/2048-rust
[INFO] frobbed toml for ashfordneil/2048-rust written to work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/ashfordneil/2048-rust/Cargo.toml
[INFO] started frobbing ashfordneil/2048-rust
[INFO] finished frobbing ashfordneil/2048-rust
[INFO] frobbed toml for ashfordneil/2048-rust written to work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/ashfordneil/2048-rust/Cargo.toml
[INFO] crate ashfordneil/2048-rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking ashfordneil/2048-rust against try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b for pr-58948
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58948/worker-5/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/ashfordneil/2048-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=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" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 8bf84afab2395443d1eaaa8e4b64e9dc2f92c4e9c33a990ba226455fff6f23c6
[INFO] running `"docker" "start" "-a" "8bf84afab2395443d1eaaa8e4b64e9dc2f92c4e9c33a990ba226455fff6f23c6"`
[INFO] [stderr]     Checking termion v1.1.4
[INFO] [stderr]     Checking itertools v0.5.8
[INFO] [stderr]     Checking 2048 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> src/board.rs:70:32
[INFO] [stderr]    |
[INFO] [stderr] 70 |                       Digit(Some((((index / BOARD_WIDTH as usize / BOARD_WIDTH as usize %
[INFO] [stderr]    |  ________________________________^
[INFO] [stderr] 71 | |                                   2) as u8))));
[INFO] [stderr]    | |____________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 70 |                     Digit(Some(((index / BOARD_WIDTH as usize / BOARD_WIDTH as usize %
[INFO] [stderr] 71 |                                   2) as u8)));
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> src/board.rs:70:32
[INFO] [stderr]    |
[INFO] [stderr] 70 |                       Digit(Some((((index / BOARD_WIDTH as usize / BOARD_WIDTH as usize %
[INFO] [stderr]    |  ________________________________^
[INFO] [stderr] 71 | |                                   2) as u8))));
[INFO] [stderr]    | |____________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 70 |                     Digit(Some(((index / BOARD_WIDTH as usize / BOARD_WIDTH as usize %
[INFO] [stderr] 71 |                                   2) as u8)));
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.97s
[INFO] running `"docker" "inspect" "8bf84afab2395443d1eaaa8e4b64e9dc2f92c4e9c33a990ba226455fff6f23c6"`
[INFO] running `"docker" "rm" "-f" "8bf84afab2395443d1eaaa8e4b64e9dc2f92c4e9c33a990ba226455fff6f23c6"`
[INFO] [stdout] 8bf84afab2395443d1eaaa8e4b64e9dc2f92c4e9c33a990ba226455fff6f23c6