[INFO] crate libbruteforce 2.1.0 is already in cache
[INFO] checking libbruteforce-2.1.0 against master#bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc for pr-70917
[INFO] extracting crate libbruteforce 2.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate libbruteforce 2.1.0 on toolchain bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate libbruteforce 2.1.0
[INFO] finished tweaking crates.io crate libbruteforce 2.1.0
[INFO] tweaked toml for crates.io crate libbruteforce 2.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate libbruteforce 2.1.0 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "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] 1e0af41210a62cb90143acc9c4fb6b43925dfe7763e22db88f8f61e62ff7a309
[INFO] running `"docker" "start" "-a" "1e0af41210a62cb90143acc9c4fb6b43925dfe7763e22db88f8f61e62ff7a309"`
[INFO] [stderr]     Checking md5 v0.7.0
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking sha2 v0.8.1
[INFO] [stderr]     Checking libbruteforce v2.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'symbols::build_alphabet'
[INFO] [stderr]   --> src/symbols/mod.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 50 |     build_alphabet(true,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'symbols::build_alphabet'
[INFO] [stderr]   --> src/symbols/mod.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 50 |     build_alphabet(true,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'symbols::build_alphabet'
[INFO] [stderr]    --> src/symbols/mod.rs:112:24
[INFO] [stderr]     |
[INFO] [stderr] 112 |         let alphabet = build_alphabet(
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'symbols::build_alphabet'
[INFO] [stderr]    --> src/symbols/mod.rs:118:24
[INFO] [stderr]     |
[INFO] [stderr] 118 |         let alphabet = build_alphabet(
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/symbols/builder.rs:37:17
[INFO] [stderr]    |
[INFO] [stderr] 37 |     pub fn full(mut self) -> Builder {
[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/symbols/builder.rs:56:25
[INFO] [stderr]    |
[INFO] [stderr] 56 |     pub fn with_letters(mut self) -> Builder {
[INFO] [stderr]    |                         ----^^^^
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/symbols/builder.rs:62:25
[INFO] [stderr]    |
[INFO] [stderr] 62 |     pub fn with_umlauts(mut self) -> Builder {
[INFO] [stderr]    |                         ----^^^^
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/symbols/builder.rs:122:35
[INFO] [stderr]     |
[INFO] [stderr] 122 |     pub fn with_all_special_chars(mut self) -> Builder {
[INFO] [stderr]     |                                   ----^^^^
[INFO] [stderr]     |                                   |
[INFO] [stderr]     |                                   help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `indices_word_length`
[INFO] [stderr]   --> src/crack/indices.rs:50:8
[INFO] [stderr]    |
[INFO] [stderr] 50 | 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: variable does not need to be mutable
[INFO] [stderr]   --> src/symbols/builder.rs:37:17
[INFO] [stderr]    |
[INFO] [stderr] 37 |     pub fn full(mut self) -> Builder {
[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/symbols/builder.rs:56:25
[INFO] [stderr]    |
[INFO] [stderr] 56 |     pub fn with_letters(mut self) -> Builder {
[INFO] [stderr]    |                         ----^^^^
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/symbols/builder.rs:62:25
[INFO] [stderr]    |
[INFO] [stderr] 62 |     pub fn with_umlauts(mut self) -> Builder {
[INFO] [stderr]    |                         ----^^^^
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/symbols/builder.rs:122:35
[INFO] [stderr]     |
[INFO] [stderr] 122 |     pub fn with_all_special_chars(mut self) -> Builder {
[INFO] [stderr]     |                                   ----^^^^
[INFO] [stderr]     |                                   |
[INFO] [stderr]     |                                   help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/symbols/builder.rs:147:13
[INFO] [stderr]     |
[INFO] [stderr] 147 |         let mut builder = Builder::new();
[INFO] [stderr]     |             ----^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/symbols/builder.rs:174:13
[INFO] [stderr]     |
[INFO] [stderr] 174 |         let mut builder = Builder::new();
[INFO] [stderr]     |             ----^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/symbols/builder.rs:180:13
[INFO] [stderr]     |
[INFO] [stderr] 180 |         let mut builder = Builder::new();
[INFO] [stderr]     |             ----^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/crack/indices.rs:175:9
[INFO] [stderr]     |
[INFO] [stderr] 175 |         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:190:9
[INFO] [stderr]     |
[INFO] [stderr] 190 |         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:200:9
[INFO] [stderr]     |
[INFO] [stderr] 200 |         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:227:9
[INFO] [stderr]     |
[INFO] [stderr] 227 |         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:239:9
[INFO] [stderr]     |
[INFO] [stderr] 239 |         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:241:9
[INFO] [stderr]     |
[INFO] [stderr] 241 |         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: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `libbruteforce::transform_fns::SHA256_HASHING`
[INFO] [stderr]  --> src/bin/readme_example.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     use libbruteforce::transform_fns::SHA256_HASHING;
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `libbruteforce::transform_fns::SHA256_HASHING`
[INFO] [stderr]  --> src/bin/readme_example.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     use libbruteforce::transform_fns::SHA256_HASHING;
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` 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: if this is intentional, prefix it 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 1.03s
[INFO] running `"docker" "inspect" "1e0af41210a62cb90143acc9c4fb6b43925dfe7763e22db88f8f61e62ff7a309"`
[INFO] running `"docker" "rm" "-f" "1e0af41210a62cb90143acc9c4fb6b43925dfe7763e22db88f8f61e62ff7a309"`
[INFO] [stdout] 1e0af41210a62cb90143acc9c4fb6b43925dfe7763e22db88f8f61e62ff7a309
