[INFO] cloning repository https://github.com/philippeitis/RuzzleSolverRS
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/philippeitis/RuzzleSolverRS" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fphilippeitis%2FRuzzleSolverRS"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fphilippeitis%2FRuzzleSolverRS'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f0aec26420a4cae3f2589f370075c205e9209fc3
[INFO] checking philippeitis/RuzzleSolverRS against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fphilippeitis%2FRuzzleSolverRS" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/philippeitis/RuzzleSolverRS on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/philippeitis/RuzzleSolverRS
[INFO] finished tweaking git repo https://github.com/philippeitis/RuzzleSolverRS
[INFO] tweaked toml for git repo https://github.com/philippeitis/RuzzleSolverRS written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/philippeitis/RuzzleSolverRS already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c04883cfbe7a8ee302bdf17c2dca550a7614afd9d514bbbf87b9a44fe2c8f01d
[INFO] running `"docker" "start" "-a" "c04883cfbe7a8ee302bdf17c2dca550a7614afd9d514bbbf87b9a44fe2c8f01d"`
[INFO] [stderr]     Checking ruzzle_solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/main.rs:100:5
[INFO] [stderr]     |
[INFO] [stderr] 100 | /     /// Paths consist of 12 five bit vertices:
[INFO] [stderr] 101 | |     /// [continuation_flag:1][x:2][y:2]
[INFO] [stderr]     | |_______________________________________^
[INFO] [stderr] 102 | 
[INFO] [stderr] 103 |       let path = (16 | start_point) as u64;
[INFO] [stderr]     |       ------------------------------------- rustdoc does not generate documentation for statements
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/main.rs:100:5
[INFO] [stderr]     |
[INFO] [stderr] 100 | /     /// Paths consist of 12 five bit vertices:
[INFO] [stderr] 101 | |     /// [continuation_flag:1][x:2][y:2]
[INFO] [stderr]     | |_______________________________________^
[INFO] [stderr] 102 | 
[INFO] [stderr] 103 |       let path = (16 | start_point) as u64;
[INFO] [stderr]     |       ------------------------------------- rustdoc does not generate documentation for statements
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: irrefutable while-let pattern
[INFO] [stderr]    --> src/main.rs:213:5
[INFO] [stderr]     |
[INFO] [stderr] 213 | /     while let res = reader.read_line(&mut s).expect("Reading prefixes failed.") {
[INFO] [stderr] 214 | |         if res == 0 {
[INFO] [stderr] 215 | |             break;
[INFO] [stderr] 216 | |         }
[INFO] [stderr] 217 | |         prefixes.insert(string_to_u64(&s[..res - 2].to_owned(), str_to_u64));
[INFO] [stderr] 218 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: irrefutable while-let pattern
[INFO] [stderr]    --> src/main.rs:246:5
[INFO] [stderr]     |
[INFO] [stderr] 246 | /     while let res = reader.read_line(&mut s).expect("Reading dictionary failed.") {
[INFO] [stderr] 247 | |         if res == 0 {
[INFO] [stderr] 248 | |             break;
[INFO] [stderr] 249 | |         }
[INFO] [stderr] 250 | |         dict.insert(string_to_u64(&s[..res - 2].to_owned(), str_to_u64));
[INFO] [stderr] 251 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: irrefutable while-let pattern
[INFO] [stderr]    --> src/main.rs:213:5
[INFO] [stderr]     |
[INFO] [stderr] 213 | /     while let res = reader.read_line(&mut s).expect("Reading prefixes failed.") {
[INFO] [stderr] 214 | |         if res == 0 {
[INFO] [stderr] 215 | |             break;
[INFO] [stderr] 216 | |         }
[INFO] [stderr] 217 | |         prefixes.insert(string_to_u64(&s[..res - 2].to_owned(), str_to_u64));
[INFO] [stderr] 218 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: irrefutable while-let pattern
[INFO] [stderr]    --> src/main.rs:246:5
[INFO] [stderr]     |
[INFO] [stderr] 246 | /     while let res = reader.read_line(&mut s).expect("Reading dictionary failed.") {
[INFO] [stderr] 247 | |         if res == 0 {
[INFO] [stderr] 248 | |             break;
[INFO] [stderr] 249 | |         }
[INFO] [stderr] 250 | |         dict.insert(string_to_u64(&s[..res - 2].to_owned(), str_to_u64));
[INFO] [stderr] 251 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `PATH_TO_PREFIXES`
[INFO] [stderr]   --> src/main.rs:21:1
[INFO] [stderr]    |
[INFO] [stderr] 21 | const PATH_TO_PREFIXES: &str = r"data/prefixes/";
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `PATH_TO_DICTIONARY`
[INFO] [stderr]   --> src/main.rs:22:1
[INFO] [stderr]    |
[INFO] [stderr] 22 | const PATH_TO_DICTIONARY: &str = r"data/";
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `PREFIX_LOWER_BOUND`
[INFO] [stderr]   --> src/main.rs:34:1
[INFO] [stderr]    |
[INFO] [stderr] 34 | const PREFIX_LOWER_BOUND: usize = 2;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `string_to_u64`
[INFO] [stderr]    --> src/main.rs:154:4
[INFO] [stderr]     |
[INFO] [stderr] 154 | fn string_to_u64(string_to_convert: &String, str_to_u64: &HashMap<char, u64>) -> u64 {
[INFO] [stderr]     |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_prefixes`
[INFO] [stderr]    --> src/main.rs:206:4
[INFO] [stderr]     |
[INFO] [stderr] 206 | fn read_prefixes(str_to_u64: &HashMap<char, u64>) -> HashSet<u64, BuildHasherDefault<FnvHasher>> {
[INFO] [stderr]     |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_dict`
[INFO] [stderr]    --> src/main.rs:239:4
[INFO] [stderr]     |
[INFO] [stderr] 239 | fn read_dict(str_to_u64: &HashMap<char, u64>) -> HashSet<u64, BuildHasherDefault<FnvHasher>> {
[INFO] [stderr]     |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `gen_visited`
[INFO] [stderr]    --> src/main.rs:381:4
[INFO] [stderr]     |
[INFO] [stderr] 381 | fn gen_visited() -> Vec<bool> {
[INFO] [stderr]     |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `PATH_TO_PREFIXES`
[INFO] [stderr]   --> src/main.rs:21:1
[INFO] [stderr]    |
[INFO] [stderr] 21 | const PATH_TO_PREFIXES: &str = r"data/prefixes/";
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `PATH_TO_DICTIONARY`
[INFO] [stderr]   --> src/main.rs:22:1
[INFO] [stderr]    |
[INFO] [stderr] 22 | const PATH_TO_DICTIONARY: &str = r"data/";
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `PREFIX_LOWER_BOUND`
[INFO] [stderr]   --> src/main.rs:34:1
[INFO] [stderr]    |
[INFO] [stderr] 34 | const PREFIX_LOWER_BOUND: usize = 2;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `string_to_u64`
[INFO] [stderr]    --> src/main.rs:154:4
[INFO] [stderr]     |
[INFO] [stderr] 154 | fn string_to_u64(string_to_convert: &String, str_to_u64: &HashMap<char, u64>) -> u64 {
[INFO] [stderr]     |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_prefixes`
[INFO] [stderr]    --> src/main.rs:206:4
[INFO] [stderr]     |
[INFO] [stderr] 206 | fn read_prefixes(str_to_u64: &HashMap<char, u64>) -> HashSet<u64, BuildHasherDefault<FnvHasher>> {
[INFO] [stderr]     |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_dict`
[INFO] [stderr]    --> src/main.rs:239:4
[INFO] [stderr]     |
[INFO] [stderr] 239 | fn read_dict(str_to_u64: &HashMap<char, u64>) -> HashSet<u64, BuildHasherDefault<FnvHasher>> {
[INFO] [stderr]     |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `gen_visited`
[INFO] [stderr]    --> src/main.rs:381:4
[INFO] [stderr]     |
[INFO] [stderr] 381 | fn gen_visited() -> Vec<bool> {
[INFO] [stderr]     |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `"docker" "inspect" "c04883cfbe7a8ee302bdf17c2dca550a7614afd9d514bbbf87b9a44fe2c8f01d"`
[INFO] running `"docker" "rm" "-f" "c04883cfbe7a8ee302bdf17c2dca550a7614afd9d514bbbf87b9a44fe2c8f01d"`
[INFO] [stdout] c04883cfbe7a8ee302bdf17c2dca550a7614afd9d514bbbf87b9a44fe2c8f01d