[INFO] crate libbruteforce 2.0.0 is already in cache
[INFO] checking libbruteforce-2.0.0 against try#f149601db42efe10ece8b284ab681fd4a6fcb89c for pr-68766
[INFO] extracting crate libbruteforce 2.0.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate libbruteforce 2.0.0 on toolchain f149601db42efe10ece8b284ab681fd4a6fcb89c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate libbruteforce 2.0.0
[INFO] finished tweaking crates.io crate libbruteforce 2.0.0
[INFO] tweaked toml for crates.io crate libbruteforce 2.0.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate libbruteforce 2.0.0 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 7fe833e5c3d023873e901d8c9fa38f41f333b5f43ef42e0baba72b02744136f1
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "7fe833e5c3d023873e901d8c9fa38f41f333b5f43ef42e0baba72b02744136f1"`
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking sha2 v0.8.1
[INFO] [stderr]     Checking libbruteforce v2.0.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: function is never used: `indices_word_length`
[INFO] [stderr]   --> src/crack/indices.rs:35:8
[INFO] [stderr]    |
[INFO] [stderr] 35 | pub fn indices_word_length(indices: &Box<[isize]>) -> usize {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `create_test_crack_params_full_alphabet`
[INFO] [stderr]   --> src/util/mod.rs:14:8
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub fn create_test_crack_params_full_alphabet(target: &String) -> CrackParameter {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `create_test_crack_params_full_alphabet_sha256`
[INFO] [stderr]   --> src/util/mod.rs:29:8
[INFO] [stderr]    |
[INFO] [stderr] 29 | pub fn create_test_crack_params_full_alphabet_sha256(target: &String) -> CrackParameter {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `create_test_crack_params_full_alphabet_sha256_fair`
[INFO] [stderr]   --> src/util/mod.rs:44:8
[INFO] [stderr]    |
[INFO] [stderr] 44 | pub fn create_test_crack_params_full_alphabet_sha256_fair(target: &String) -> CrackParameter {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/crack/indices.rs:142:9
[INFO] [stderr]     |
[INFO] [stderr] 142 |         indices_increment_by(&alphabet, &mut arr, 1);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/crack/indices.rs:157:9
[INFO] [stderr]     |
[INFO] [stderr] 157 |         indices_increment_by(&alphabet, &mut arr, 1);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/crack/indices.rs:167:9
[INFO] [stderr]     |
[INFO] [stderr] 167 |         indices_increment_by(&alphabet, &mut arr, 1);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/crack/indices.rs:194:9
[INFO] [stderr]     |
[INFO] [stderr] 194 |         indices_increment_by(&alphabet, &mut indices, steps);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/crack/indices.rs:206:9
[INFO] [stderr]     |
[INFO] [stderr] 206 |         indices_increment_by(&alphabet, &mut indices, 1);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/crack/indices.rs:208:9
[INFO] [stderr]     |
[INFO] [stderr] 208 |         indices_increment_by(&alphabet, &mut indices, 4);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `input`
[INFO] [stderr]  --> src/bin/demo.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let input = String::from("a+c");
[INFO] [stderr]   |         ^^^^^ help: consider prefixing with an underscore: `_input`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `input`
[INFO] [stderr]  --> src/bin/demo.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let input = String::from("a+c");
[INFO] [stderr]   |         ^^^^^ help: consider prefixing with an underscore: `_input`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.85s
[INFO] running `"docker" "inspect" "7fe833e5c3d023873e901d8c9fa38f41f333b5f43ef42e0baba72b02744136f1"`
[INFO] running `"docker" "rm" "-f" "7fe833e5c3d023873e901d8c9fa38f41f333b5f43ef42e0baba72b02744136f1"`
[INFO] [stdout] 7fe833e5c3d023873e901d8c9fa38f41f333b5f43ef42e0baba72b02744136f1