[INFO] updating cached repository tiuuuuPJ/antbook
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/tiuuuuPJ/antbook
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/tiuuuuPJ/antbook" "work/ex/pr-57321/sources/master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104/gh/tiuuuuPJ/antbook"`
[INFO] [stderr] Cloning into 'work/ex/pr-57321/sources/master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104/gh/tiuuuuPJ/antbook'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tiuuuuPJ/antbook" "work/ex/pr-57321/sources/try#b9139d2caca1db46014a9c302d5c47cfae0d8ae0/gh/tiuuuuPJ/antbook"`
[INFO] [stderr] Cloning into 'work/ex/pr-57321/sources/try#b9139d2caca1db46014a9c302d5c47cfae0d8ae0/gh/tiuuuuPJ/antbook'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2ce9c4b9cffbd20d86b9d47971e58ec6b1418e08
[INFO] sha for GitHub repo tiuuuuPJ/antbook: 2ce9c4b9cffbd20d86b9d47971e58ec6b1418e08
[INFO] validating manifest of tiuuuuPJ/antbook on toolchain master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0bbc3927e28c22edefe6a1353b5ecc95ea9a104-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of tiuuuuPJ/antbook on toolchain try#b9139d2caca1db46014a9c302d5c47cfae0d8ae0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b9139d2caca1db46014a9c302d5c47cfae0d8ae0-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing tiuuuuPJ/antbook
[INFO] finished frobbing tiuuuuPJ/antbook
[INFO] frobbed toml for tiuuuuPJ/antbook written to work/ex/pr-57321/sources/master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104/gh/tiuuuuPJ/antbook/Cargo.toml
[INFO] started frobbing tiuuuuPJ/antbook
[INFO] finished frobbing tiuuuuPJ/antbook
[INFO] frobbed toml for tiuuuuPJ/antbook written to work/ex/pr-57321/sources/try#b9139d2caca1db46014a9c302d5c47cfae0d8ae0/gh/tiuuuuPJ/antbook/Cargo.toml
[INFO] crate tiuuuuPJ/antbook has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0bbc3927e28c22edefe6a1353b5ecc95ea9a104-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b9139d2caca1db46014a9c302d5c47cfae0d8ae0-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking tiuuuuPJ/antbook against master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104 for pr-57321
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57321/worker-3/master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57321/sources/master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104/gh/tiuuuuPJ/antbook:/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" "+c0bbc3927e28c22edefe6a1353b5ecc95ea9a104-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] df998f0ba9c62177d32334b52cb58983baf4a990730c6c4acc4064e08ef45762
[INFO] running `"docker" "start" "-a" "df998f0ba9c62177d32334b52cb58983baf4a990730c6c4acc4064e08ef45762"`
[INFO] [stderr]     Checking antbook v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function `DFS` should have a snake case name such as `dfs`
[INFO] [stderr]   --> src/chapter-2/maze.rs:22:1
[INFO] [stderr]    |
[INFO] [stderr] 22 | / fn DFS(map: &mut Vec<Vec<char>>, flag: &mut bool) -> bool {
[INFO] [stderr] 23 | |     fn recursive(map: &mut Vec<Vec<char>>, i: usize, j: usize, flag: &mut bool) {
[INFO] [stderr] 24 | |         match map[i][j] {
[INFO] [stderr] 25 | |             '.' => {
[INFO] [stderr] ...  |
[INFO] [stderr] 51 | |     return *flag;
[INFO] [stderr] 52 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `DFS` should have a snake case name such as `dfs`
[INFO] [stderr]   --> src/chapter-2/maze.rs:22:1
[INFO] [stderr]    |
[INFO] [stderr] 22 | / fn DFS(map: &mut Vec<Vec<char>>, flag: &mut bool) -> bool {
[INFO] [stderr] 23 | |     fn recursive(map: &mut Vec<Vec<char>>, i: usize, j: usize, flag: &mut bool) {
[INFO] [stderr] 24 | |         match map[i][j] {
[INFO] [stderr] 25 | |             '.' => {
[INFO] [stderr] ...  |
[INFO] [stderr] 51 | |     return *flag;
[INFO] [stderr] 52 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.17s
[INFO] running `"docker" "inspect" "df998f0ba9c62177d32334b52cb58983baf4a990730c6c4acc4064e08ef45762"`
[INFO] running `"docker" "rm" "-f" "df998f0ba9c62177d32334b52cb58983baf4a990730c6c4acc4064e08ef45762"`
[INFO] [stdout] df998f0ba9c62177d32334b52cb58983baf4a990730c6c4acc4064e08ef45762