[INFO] cloning repository https://github.com/phip1611/libbruteforce
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/phip1611/libbruteforce" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fphip1611%2Flibbruteforce", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fphip1611%2Flibbruteforce'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ef9174713bcaab1904e22783f5e6579936d9b80b
[INFO] testing phip1611/libbruteforce against 1.47.0 for beta-1.48-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fphip1611%2Flibbruteforce" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/phip1611/libbruteforce on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/phip1611/libbruteforce
[INFO] finished tweaking git repo https://github.com/phip1611/libbruteforce
[INFO] tweaked toml for git repo https://github.com/phip1611/libbruteforce written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/phip1611/libbruteforce already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f94e8fd5854563c2dcbb374c3a6affdd323855c204e78acbdda255f69ac230c8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f94e8fd5854563c2dcbb374c3a6affdd323855c204e78acbdda255f69ac230c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f94e8fd5854563c2dcbb374c3a6affdd323855c204e78acbdda255f69ac230c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f94e8fd5854563c2dcbb374c3a6affdd323855c204e78acbdda255f69ac230c8", kill_on_drop: false }`
[INFO] [stdout] f94e8fd5854563c2dcbb374c3a6affdd323855c204e78acbdda255f69ac230c8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5e36dcf20b805c56097213bd23ff9ecebc2fbf358410901c9fc7e8dfbeba5f9a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5e36dcf20b805c56097213bd23ff9ecebc2fbf358410901c9fc7e8dfbeba5f9a", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling sha2 v0.8.1
[INFO] [stderr]    Compiling libbruteforce v2.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated function `symbols::build_alphabet`
[INFO] [stdout]   --> src/symbols/mod.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 50 |     build_alphabet(true,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/symbols/builder.rs:37:17
[INFO] [stdout]    |
[INFO] [stdout] 37 |     pub fn full(mut self) -> Builder {
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/symbols/builder.rs:56:25
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub fn with_letters(mut self) -> Builder {
[INFO] [stdout]    |                         ----^^^^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/symbols/builder.rs:62:25
[INFO] [stdout]    |
[INFO] [stdout] 62 |     pub fn with_umlauts(mut self) -> Builder {
[INFO] [stdout]    |                         ----^^^^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/symbols/builder.rs:122:35
[INFO] [stdout]     |
[INFO] [stdout] 122 |     pub fn with_all_special_chars(mut self) -> Builder {
[INFO] [stdout]     |                                   ----^^^^
[INFO] [stdout]     |                                   |
[INFO] [stdout]     |                                   help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `indices_word_length`
[INFO] [stdout]   --> src/crack/indices.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub fn indices_word_length(indices: &Box<[isize]>) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `create_test_crack_params_full_alphabet`
[INFO] [stdout]   --> src/util/mod.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn create_test_crack_params_full_alphabet(target: &String) -> CrackParameter {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `create_test_crack_params_full_alphabet_sha256`
[INFO] [stdout]   --> src/util/mod.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub fn create_test_crack_params_full_alphabet_sha256(target: &String) -> CrackParameter {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `create_test_crack_params_full_alphabet_sha256_fair`
[INFO] [stdout]   --> src/util/mod.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub fn create_test_crack_params_full_alphabet_sha256_fair(target: &String) -> CrackParameter {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `libbruteforce::transform_fns::SHA256_HASHING`
[INFO] [stdout]  --> src/bin/readme_example.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     use libbruteforce::transform_fns::SHA256_HASHING;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]  --> src/bin/demo.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let input = String::from("a+c");
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.40s
[INFO] running `Command { std: "docker" "inspect" "5e36dcf20b805c56097213bd23ff9ecebc2fbf358410901c9fc7e8dfbeba5f9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e36dcf20b805c56097213bd23ff9ecebc2fbf358410901c9fc7e8dfbeba5f9a", kill_on_drop: false }`
[INFO] [stdout] 5e36dcf20b805c56097213bd23ff9ecebc2fbf358410901c9fc7e8dfbeba5f9a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f038278a9915435d230bc21d53a6040d6ef3ce0420cb462892d417d60b3ef68d
[INFO] running `Command { std: "docker" "start" "-a" "f038278a9915435d230bc21d53a6040d6ef3ce0420cb462892d417d60b3ef68d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libbruteforce v2.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated function `symbols::build_alphabet`
[INFO] [stdout]   --> src/symbols/mod.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 50 |     build_alphabet(true,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/symbols/builder.rs:37:17
[INFO] [stdout]    |
[INFO] [stdout] 37 |     pub fn full(mut self) -> Builder {
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/symbols/builder.rs:56:25
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub fn with_letters(mut self) -> Builder {
[INFO] [stdout]    |                         ----^^^^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/symbols/builder.rs:62:25
[INFO] [stdout]    |
[INFO] [stdout] 62 |     pub fn with_umlauts(mut self) -> Builder {
[INFO] [stdout]    |                         ----^^^^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/symbols/builder.rs:122:35
[INFO] [stdout]     |
[INFO] [stdout] 122 |     pub fn with_all_special_chars(mut self) -> Builder {
[INFO] [stdout]     |                                   ----^^^^
[INFO] [stdout]     |                                   |
[INFO] [stdout]     |                                   help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `indices_word_length`
[INFO] [stdout]   --> src/crack/indices.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub fn indices_word_length(indices: &Box<[isize]>) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `create_test_crack_params_full_alphabet`
[INFO] [stdout]   --> src/util/mod.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn create_test_crack_params_full_alphabet(target: &String) -> CrackParameter {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `create_test_crack_params_full_alphabet_sha256`
[INFO] [stdout]   --> src/util/mod.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub fn create_test_crack_params_full_alphabet_sha256(target: &String) -> CrackParameter {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `create_test_crack_params_full_alphabet_sha256_fair`
[INFO] [stdout]   --> src/util/mod.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub fn create_test_crack_params_full_alphabet_sha256_fair(target: &String) -> CrackParameter {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]  --> src/bin/demo.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let input = String::from("a+c");
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `symbols::build_alphabet`
[INFO] [stdout]   --> src/symbols/mod.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 50 |     build_alphabet(true,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `symbols::build_alphabet`
[INFO] [stdout]    --> src/symbols/mod.rs:112:24
[INFO] [stdout]     |
[INFO] [stdout] 112 |         let alphabet = build_alphabet(
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `symbols::build_alphabet`
[INFO] [stdout]    --> src/symbols/mod.rs:118:24
[INFO] [stdout]     |
[INFO] [stdout] 118 |         let alphabet = build_alphabet(
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `libbruteforce::transform_fns::SHA256_HASHING`
[INFO] [stdout]  --> src/bin/readme_example.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     use libbruteforce::transform_fns::SHA256_HASHING;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/symbols/builder.rs:37:17
[INFO] [stdout]    |
[INFO] [stdout] 37 |     pub fn full(mut self) -> Builder {
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/symbols/builder.rs:56:25
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub fn with_letters(mut self) -> Builder {
[INFO] [stdout]    |                         ----^^^^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/symbols/builder.rs:62:25
[INFO] [stdout]    |
[INFO] [stdout] 62 |     pub fn with_umlauts(mut self) -> Builder {
[INFO] [stdout]    |                         ----^^^^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/symbols/builder.rs:122:35
[INFO] [stdout]     |
[INFO] [stdout] 122 |     pub fn with_all_special_chars(mut self) -> Builder {
[INFO] [stdout]     |                                   ----^^^^
[INFO] [stdout]     |                                   |
[INFO] [stdout]     |                                   help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/symbols/builder.rs:147:13
[INFO] [stdout]     |
[INFO] [stdout] 147 |         let mut builder = Builder::new();
[INFO] [stdout]     |             ----^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/symbols/builder.rs:174:13
[INFO] [stdout]     |
[INFO] [stdout] 174 |         let mut builder = Builder::new();
[INFO] [stdout]     |             ----^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/symbols/builder.rs:180:13
[INFO] [stdout]     |
[INFO] [stdout] 180 |         let mut builder = Builder::new();
[INFO] [stdout]     |             ----^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/crack/indices.rs:175:9
[INFO] [stdout]     |
[INFO] [stdout] 175 |         indices_increment_by(&alphabet, &mut arr, 1);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/crack/indices.rs:190:9
[INFO] [stdout]     |
[INFO] [stdout] 190 |         indices_increment_by(&alphabet, &mut arr, 1);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/crack/indices.rs:200:9
[INFO] [stdout]     |
[INFO] [stdout] 200 |         indices_increment_by(&alphabet, &mut arr, 1);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/crack/indices.rs:227:9
[INFO] [stdout]     |
[INFO] [stdout] 227 |         indices_increment_by(&alphabet, &mut indices, steps);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/crack/indices.rs:239:9
[INFO] [stdout]     |
[INFO] [stdout] 239 |         indices_increment_by(&alphabet, &mut indices, 1);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/crack/indices.rs:241:9
[INFO] [stdout]     |
[INFO] [stdout] 241 |         indices_increment_by(&alphabet, &mut indices, 4);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.10s
[INFO] running `Command { std: "docker" "inspect" "f038278a9915435d230bc21d53a6040d6ef3ce0420cb462892d417d60b3ef68d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f038278a9915435d230bc21d53a6040d6ef3ce0420cb462892d417d60b3ef68d", kill_on_drop: false }`
[INFO] [stdout] f038278a9915435d230bc21d53a6040d6ef3ce0420cb462892d417d60b3ef68d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 82c794955e4097ec1377c151d7e7b05931fd8c77e015cc91b741e7c83db46c43
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "82c794955e4097ec1377c151d7e7b05931fd8c77e015cc91b741e7c83db46c43", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated function `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 function `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 function `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: 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: 16 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated function `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: 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: 9 warnings emitted
[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] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.18s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/libbruteforce-77c2ff58f1a5145a
[INFO] [stdout] 
[INFO] [stdout] running 22 tests
[INFO] [stdout] test symbols::tests::test_build_alphabet ... ok
[INFO] [stdout] test crack::indices::tests::test_increment_indices_to_upper_bound ... ok
[INFO] [stdout] test crack::indices::tests::test_increment_indices_array_add1_overflow ... ok
[INFO] [stdout] test symbols::tests::test_combinations_count ... ok
[INFO] [stdout] test crack::indices::tests::test_increment_indices_array_add1 ... ok
[INFO] [stdout] test crack::indices::tests::test_get_word_as_string_1 ... ok
[INFO] [stdout] test crack::indices::tests::test_create_indices_arr ... ok
[INFO] [stdout] test crack::indices::tests::test_increment_indices_array_add1_initial ... ok
[INFO] [stdout] test crack::indices::tests::test_increment_indices_array_total_overflow ... ok
[INFO] [stdout] test symbols::builder::tests::test_build ... ok
[INFO] [stdout] test symbols::builder::tests::test_build_special_chars ... ok
[INFO] [stdout] test crack::indices::tests::test_length_of_indices_array ... ok
[INFO] [stdout] test transform_fns::tests::test_identity ... ok
[INFO] [stdout] test crack::indices::tests::test_get_word_as_string_2 ... ok
[INFO] [stdout] test transform_fns::tests::test_sha1 ... ok
[INFO] [stdout] test transform_fns::tests::test_md5 ... ok
[INFO] [stdout] test transform_fns::tests::test_sha256 ... ok
[INFO] [stdout] test symbols::tests::test_combinations_count_panic ... ok
[INFO] [stdout] test symbols::builder::tests::test_panic ... ok
[INFO] [stdout] test crack::indices::tests::test_create_indices_arr_panic ... ok
[INFO] [stdout] test crack::tests::test_crack_identity ... ok
[INFO] [stdout] test crack::tests::test_crack_sha256_fair_and_unfair_mode ... test crack::tests::test_crack_sha256_fair_and_unfair_mode has been running for over 60 seconds
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "82c794955e4097ec1377c151d7e7b05931fd8c77e015cc91b741e7c83db46c43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82c794955e4097ec1377c151d7e7b05931fd8c77e015cc91b741e7c83db46c43", kill_on_drop: false }`
[INFO] [stdout] 82c794955e4097ec1377c151d7e7b05931fd8c77e015cc91b741e7c83db46c43
