[INFO] fetching crate cifra 0.9.3+post3...
[INFO] checking cifra-0.9.3+post3 against 1.95.0 for pr-155915
[INFO] extracting crate cifra 0.9.3+post3 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate cifra 0.9.3+post3
[INFO] finished tweaking crates.io crate cifra 0.9.3+post3
[INFO] tweaked toml for crates.io crate cifra 0.9.3+post3 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate cifra 0.9.3+post3 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate cifra 0.9.3+post3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(trace_macros)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `diesel::result::Error::DatabaseError`
[INFO] [stdout]    --> src/attack/caesar.rs:140:9
[INFO] [stdout]     |
[INFO] [stdout] 140 |     use diesel::result::Error::DatabaseError;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `OsStr`
[INFO] [stdout]  --> src/attack/database.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::ffi::{OsStr, OsString};
[INFO] [stdout]   |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Error`
[INFO] [stdout]   --> src/attack/database.rs:11:43
[INFO] [stdout]    |
[INFO] [stdout] 11 | use crate::{ErrorKind, Result, ResultExt, Error};
[INFO] [stdout]    |                                           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `DATABASE_STANDARD_PATH` should have an upper camel case name
[INFO] [stdout]   --> src/attack/database.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | struct DATABASE_STANDARD_PATH;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `DatabaseStandardPath`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ffi::OsStr`
[INFO] [stdout]    --> src/attack/database.rs:185:9
[INFO] [stdout]     |
[INFO] [stdout] 185 |     use std::ffi::OsStr;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `read_to_string`
[INFO] [stdout]    --> src/attack/dictionaries.rs:542:50
[INFO] [stdout]     |
[INFO] [stdout] 542 |     use std::fs::{create_dir, File, OpenOptions, read_to_string};
[INFO] [stdout]     |                                                  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ffi::OsString`
[INFO] [stdout]    --> src/attack/dictionaries.rs:548:9
[INFO] [stdout]     |
[INFO] [stdout] 548 |     use std::ffi::OsString;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufReader` and `Read`
[INFO] [stdout]    --> src/attack/dictionaries.rs:550:26
[INFO] [stdout]     |
[INFO] [stdout] 550 |     use std::io::{Write, BufReader, Read};
[INFO] [stdout]     |                          ^^^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env::temp_dir`
[INFO] [stdout]    --> src/attack/dictionaries.rs:552:9
[INFO] [stdout]     |
[INFO] [stdout] 552 |     use std::env::temp_dir;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cipher`
[INFO] [stdout]  --> src/attack/frequency.rs:5:48
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::cipher::vigenere::{DEFAULT_CHARSET, cipher, decipher};
[INFO] [stdout]   |                                                ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::attack::dictionaries::tests::ENGLISH_TEXT_WITH_PUNCTUATIONS_MARKS`
[INFO] [stdout]    --> src/attack/frequency.rs:394:9
[INFO] [stdout]     |
[INFO] [stdout] 394 |     use crate::attack::dictionaries::tests::ENGLISH_TEXT_WITH_PUNCTUATIONS_MARKS;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `F64Margin`
[INFO] [stdout]    --> src/attack/frequency.rs:399:31
[INFO] [stdout]     |
[INFO] [stdout] 399 |     use float_cmp::{ApproxEq, F64Margin};
[INFO] [stdout]     |                               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ResultExt`
[INFO] [stdout]  --> src/cipher/substitution.rs:2:32
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::{ErrorKind, Result, ResultExt, Error};
[INFO] [stdout]   |                                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `has_error_description_deprecated`
[INFO] [stdout]   --> src/lib.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | / error_chain! {
[INFO] [stdout] 23 | |     types {
[INFO] [stdout] 24 | |         Error, ErrorKind, ResultExt, Result;
[INFO] [stdout] ...  |
[INFO] [stdout] 80 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = help: expected names are: `docsrs`, `feature`, and `test` and 31 more
[INFO] [stdout]    = note: using a cfg inside a macro will use the cfgs from the destination crate and not the ones from the defining crate
[INFO] [stdout]    = help: try referring to `impl_error_chain_processed` crate for guidance on how handle this unexpected cfg
[INFO] [stdout]    = help: the macro `impl_error_chain_processed` may come from an old version of the `error_chain` crate, try updating your dependency with `cargo update -p error_chain`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` which comes from the expansion of the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(trace_macros)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `OsStr`
[INFO] [stdout]  --> src/attack/database.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::ffi::{OsStr, OsString};
[INFO] [stdout]   |                ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Error`
[INFO] [stdout]   --> src/attack/database.rs:11:43
[INFO] [stdout]    |
[INFO] [stdout] 11 | use crate::{ErrorKind, Result, ResultExt, Error};
[INFO] [stdout]    |                                           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `DATABASE_STANDARD_PATH` should have an upper camel case name
[INFO] [stdout]   --> src/attack/database.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | struct DATABASE_STANDARD_PATH;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `DatabaseStandardPath`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cipher`
[INFO] [stdout]  --> src/attack/frequency.rs:5:48
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::cipher::vigenere::{DEFAULT_CHARSET, cipher, decipher};
[INFO] [stdout]   |                                                ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Error` and `ResultExt`
[INFO] [stdout]  --> src/cipher/substitution.rs:2:32
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::{ErrorKind, Result, ResultExt, Error};
[INFO] [stdout]   |                                ^^^^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `has_error_description_deprecated`
[INFO] [stdout]   --> src/lib.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | / error_chain! {
[INFO] [stdout] 23 | |     types {
[INFO] [stdout] 24 | |         Error, ErrorKind, ResultExt, Result;
[INFO] [stdout] ...  |
[INFO] [stdout] 80 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = help: expected names are: `docsrs`, `feature`, and `test` and 31 more
[INFO] [stdout]    = note: using a cfg inside a macro will use the cfgs from the destination crate and not the ones from the defining crate
[INFO] [stdout]    = help: try referring to `impl_error_chain_processed` crate for guidance on how handle this unexpected cfg
[INFO] [stdout]    = help: the macro `impl_error_chain_processed` may come from an old version of the `error_chain` crate, try updating your dependency with `cargo update -p error_chain`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` which comes from the expansion of the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `E`
[INFO] [stdout]    --> src/attack/simple_attacks.rs:165:25
[INFO] [stdout]     |
[INFO] [stdout] 165 |                     Err(E) => return None
[INFO] [stdout]     |                         ^ help: if this is intentional, prefix it with an underscore: `_E`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]    --> src/attack/frequency.rs:126:28
[INFO] [stdout]     |
[INFO] [stdout] 126 |                 .filter(|(&key, &_value)| _value == *value)
[INFO] [stdout]     |                            ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/attack/frequency.rs:164:25
[INFO] [stdout]     |
[INFO] [stdout] 164 |             .map(|(key, value)| key)
[INFO] [stdout]     |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/attack/frequency.rs:157:25
[INFO] [stdout]     |
[INFO] [stdout] 157 |             .map(|(key, value)| key)
[INFO] [stdout]     |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/attack/frequency.rs:269:28
[INFO] [stdout]     |
[INFO] [stdout] 269 |                        let mut values = sequences.get_mut(sequence_to_find).unwrap();
[INFO] [stdout]     |                            ----^^^^^^
[INFO] [stdout]     |                            |
[INFO] [stdout]     |                            help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `char`
[INFO] [stdout]    --> src/attack/frequency.rs:256:13
[INFO] [stdout]     |
[INFO] [stdout] 256 |     for (i, char) in char_string.chars().enumerate() {
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_char`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/attack/frequency.rs:383:21
[INFO] [stdout]     |
[INFO] [stdout] 383 |         .map(|(key, value)| key)
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ciphered_text`
[INFO] [stdout]   --> src/attack/vigenere.rs:36:26
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn brute_force<T, U>(ciphered_text: T, charset: U, testing: bool)-> Result<String>
[INFO] [stdout]    |                          ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ciphered_text`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `charset`
[INFO] [stdout]   --> src/attack/vigenere.rs:36:44
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn brute_force<T, U>(ciphered_text: T, charset: U, testing: bool)-> Result<String>
[INFO] [stdout]    |                                            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_charset`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `testing`
[INFO] [stdout]   --> src/attack/vigenere.rs:36:56
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn brute_force<T, U>(ciphered_text: T, charset: U, testing: bool)-> Result<String>
[INFO] [stdout]    |                                                        ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_testing`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ciphered_text`
[INFO] [stdout]   --> src/attack/vigenere.rs:47:23
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub fn brute_force_mp(ciphered_text: &str, charset: &str, testing: bool)-> Result<String> {
[INFO] [stdout]    |                       ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ciphered_text`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `charset`
[INFO] [stdout]   --> src/attack/vigenere.rs:47:44
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub fn brute_force_mp(ciphered_text: &str, charset: &str, testing: bool)-> Result<String> {
[INFO] [stdout]    |                                            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_charset`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `testing`
[INFO] [stdout]   --> src/attack/vigenere.rs:47:59
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub fn brute_force_mp(ciphered_text: &str, charset: &str, testing: bool)-> Result<String> {
[INFO] [stdout]    |                                                           ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_testing`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `offset_char` is never read
[INFO] [stdout]    --> src/cipher/vigenere.rs:101:31
[INFO] [stdout]     |
[INFO] [stdout] 101 |         let mut offset_char = String::new();
[INFO] [stdout]     |                               ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `loaded_dictionaries`
[INFO] [stdout]    --> src/attack/affine.rs:144:13
[INFO] [stdout]     |
[INFO] [stdout] 144 |         let loaded_dictionaries = LoadedDictionaries::new();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loaded_dictionaries`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `loaded_dictionaries`
[INFO] [stdout]    --> src/attack/affine.rs:153:13
[INFO] [stdout]     |
[INFO] [stdout] 153 |         let loaded_dictionaries = LoadedDictionaries::new();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loaded_dictionaries`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `loaded_dictionaries`
[INFO] [stdout]    --> src/attack/caesar.rs:148:13
[INFO] [stdout]     |
[INFO] [stdout] 148 |         let loaded_dictionaries = LoadedDictionaries::new();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loaded_dictionaries`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `loaded_dictionaries`
[INFO] [stdout]    --> src/attack/caesar.rs:157:13
[INFO] [stdout]     |
[INFO] [stdout] 157 |         let loaded_dictionaries = LoadedDictionaries::new();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loaded_dictionaries`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `test_env`
[INFO] [stdout]    --> src/attack/database.rs:201:13
[INFO] [stdout]     |
[INFO] [stdout] 201 |         let test_env = TemporalEnvironmentVariable::new("DATABASE_URL", absolute_pathname_to_database);
[INFO] [stdout]     |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_test_env`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cifra` (lib) due to 1 previous error; 20 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `temp_dir`
[INFO] [stdout]    --> src/attack/dictionaries.rs:809:14
[INFO] [stdout]     |
[INFO] [stdout] 809 |         let (temp_dir, temp_env_database_path) = temporary_database_folder(None);
[INFO] [stdout]     |              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_temp_dir`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `temp_env_database_path`
[INFO] [stdout]    --> src/attack/dictionaries.rs:809:24
[INFO] [stdout]     |
[INFO] [stdout] 809 |         let (temp_dir, temp_env_database_path) = temporary_database_folder(None);
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_temp_env_database_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `temp_dir`
[INFO] [stdout]    --> src/attack/dictionaries.rs:818:14
[INFO] [stdout]     |
[INFO] [stdout] 818 |         let (temp_dir, temp_env_database_path) = temporary_database_folder(None);
[INFO] [stdout]     |              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_temp_dir`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `temp_env_database_path`
[INFO] [stdout]    --> src/attack/dictionaries.rs:818:24
[INFO] [stdout]     |
[INFO] [stdout] 818 |         let (temp_dir, temp_env_database_path) = temporary_database_folder(None);
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_temp_env_database_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `temp_dir`
[INFO] [stdout]    --> src/attack/dictionaries.rs:835:14
[INFO] [stdout]     |
[INFO] [stdout] 835 |         let (temp_dir, temp_env_database_path) = temporary_database_folder(None);
[INFO] [stdout]     |              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_temp_dir`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `temp_env_database_path`
[INFO] [stdout]    --> src/attack/dictionaries.rs:835:24
[INFO] [stdout]     |
[INFO] [stdout] 835 |         let (temp_dir, temp_env_database_path) = temporary_database_folder(None);
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_temp_env_database_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `temp_dir`
[INFO] [stdout]    --> src/attack/dictionaries.rs:850:14
[INFO] [stdout]     |
[INFO] [stdout] 850 |         let (temp_dir, temp_env_database_path) = temporary_database_folder(None);
[INFO] [stdout]     |              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_temp_dir`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `temp_env_database_path`
[INFO] [stdout]    --> src/attack/dictionaries.rs:850:24
[INFO] [stdout]     |
[INFO] [stdout] 850 |         let (temp_dir, temp_env_database_path) = temporary_database_folder(None);
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_temp_env_database_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/attack/dictionaries.rs:864:13
[INFO] [stdout]     |
[INFO] [stdout] 864 |         let mut micro_dictionaries = get_micro_dictionaries_content();
[INFO] [stdout]     |             ----^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `temp_dir`
[INFO] [stdout]    --> src/attack/dictionaries.rs:865:14
[INFO] [stdout]     |
[INFO] [stdout] 865 |         let (temp_dir, temp_env_database_path) = loaded_micro_dictionary_temp_dir();
[INFO] [stdout]     |              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_temp_dir`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `temp_env_database_path`
[INFO] [stdout]    --> src/attack/dictionaries.rs:865:24
[INFO] [stdout]     |
[INFO] [stdout] 865 |         let (temp_dir, temp_env_database_path) = loaded_micro_dictionary_temp_dir();
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_temp_env_database_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `temp_env_database_path`
[INFO] [stdout]    --> src/attack/dictionaries.rs:902:24
[INFO] [stdout]     |
[INFO] [stdout] 902 |         let (temp_dir, temp_env_database_path) = temporary_database_folder(None);
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_temp_env_database_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `temp_dir`
[INFO] [stdout]    --> src/attack/dictionaries.rs:944:14
[INFO] [stdout]     |
[INFO] [stdout] 944 |         let (temp_dir, temp_env_database_path) = temporary_database_folder(None);
[INFO] [stdout]     |              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_temp_dir`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `temp_env_database_path`
[INFO] [stdout]    --> src/attack/dictionaries.rs:944:24
[INFO] [stdout]     |
[INFO] [stdout] 944 |         let (temp_dir, temp_env_database_path) = temporary_database_folder(None);
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_temp_env_database_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `loaded_dictionaries`
[INFO] [stdout]    --> src/attack/dictionaries.rs:959:13
[INFO] [stdout]     |
[INFO] [stdout] 959 |         let loaded_dictionaries = LoadedDictionaries::new();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loaded_dictionaries`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `temp_dir`
[INFO] [stdout]    --> src/attack/dictionaries.rs:990:14
[INFO] [stdout]     |
[INFO] [stdout] 990 |         let (temp_dir, temp_env_database_path) = temporary_database_folder(None);
[INFO] [stdout]     |              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_temp_dir`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `temp_env_database_path`
[INFO] [stdout]    --> src/attack/dictionaries.rs:990:24
[INFO] [stdout]     |
[INFO] [stdout] 990 |         let (temp_dir, temp_env_database_path) = temporary_database_folder(None);
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_temp_env_database_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `loaded_micro_dictionary_temp_dir`
[INFO] [stdout]     --> src/attack/dictionaries.rs:1020:27
[INFO] [stdout]      |
[INFO] [stdout] 1020 |     fn test_get_all_words(loaded_micro_dictionary_temp_dir: (TestEnvironment, TemporalEnvironmentVariable)) {
[INFO] [stdout]      |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loaded_micro_dictionary_temp_dir`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `E`
[INFO] [stdout]    --> src/attack/simple_attacks.rs:165:25
[INFO] [stdout]     |
[INFO] [stdout] 165 |                     Err(E) => return None
[INFO] [stdout]     |                         ^ help: if this is intentional, prefix it with an underscore: `_E`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `loaded_micro_dictionary_temp_dir`
[INFO] [stdout]    --> src/attack/simple_attacks.rs:281:43
[INFO] [stdout]     |
[INFO] [stdout] 281 |     fn test_dictionary_word_key_generator(loaded_micro_dictionary_temp_dir: (TestEnvironment, TemporalEnvironmentVariable)) {
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loaded_micro_dictionary_temp_dir`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `loaded_dictionaries`
[INFO] [stdout]    --> src/attack/substitution.rs:872:13
[INFO] [stdout]     |
[INFO] [stdout] 872 |         let loaded_dictionaries = LoadedDictionaries::new();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loaded_dictionaries`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `loaded_dictionaries`
[INFO] [stdout]    --> src/attack/substitution.rs:894:13
[INFO] [stdout]     |
[INFO] [stdout] 894 |         let loaded_dictionaries = LoadedDictionaries::new();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loaded_dictionaries`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/attack/substitution.rs:1073:13
[INFO] [stdout]      |
[INFO] [stdout] 1073 |         let mut expected_mapping_1 = mapping!(THIS_TEST_CHARSET, {"1": {"a"},
[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/attack/substitution.rs:1078:13
[INFO] [stdout]      |
[INFO] [stdout] 1078 |         let mut expected_mapping_2 =  mapping!(THIS_TEST_CHARSET, {"1": {"a"},
[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/attack/substitution.rs:1083:13
[INFO] [stdout]      |
[INFO] [stdout] 1083 |         let mut expected_mapping_3 = mapping!(THIS_TEST_CHARSET, {"1": {"b"},
[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/attack/substitution.rs:1088:13
[INFO] [stdout]      |
[INFO] [stdout] 1088 |         let mut expected_mapping_4 =  mapping!(THIS_TEST_CHARSET, {"1": {"b"},
[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/attack/substitution.rs:1093:13
[INFO] [stdout]      |
[INFO] [stdout] 1093 |         let mut expected_mapping_5 = mapping!(THIS_TEST_CHARSET, {"1": {"a"},
[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/attack/substitution.rs:1098:13
[INFO] [stdout]      |
[INFO] [stdout] 1098 |         let mut expected_mapping_6 = mapping!(THIS_TEST_CHARSET, {"1": {"a"},
[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/attack/substitution.rs:1103:13
[INFO] [stdout]      |
[INFO] [stdout] 1103 |         let mut expected_mapping_7 = mapping!(THIS_TEST_CHARSET, {"1": {"b"},
[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/attack/substitution.rs:1108:13
[INFO] [stdout]      |
[INFO] [stdout] 1108 |         let mut expected_mapping_8 =  mapping!(THIS_TEST_CHARSET, {"1": {"b"},
[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/attack/substitution.rs:1113:13
[INFO] [stdout]      |
[INFO] [stdout] 1113 |         let mut expected_list = vec![
[INFO] [stdout]      |             ----^^^^^^^^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `missing`
[INFO] [stdout]     --> src/attack/substitution.rs:1125:13
[INFO] [stdout]      |
[INFO] [stdout] 1125 | ...   let missing: Vec<Mapping> = expected_list.iter().cloned().filter(|_mapping| !recovered_mappings.contains(&_mapping)).collect();
[INFO] [stdout]      |           ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_missing`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/attack/substitution.rs:1155:13
[INFO] [stdout]      |
[INFO] [stdout] 1155 |         let mut mapping = mapping!(TEST_CHARSET,
[INFO] [stdout]      |             ----^^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `extracted_candidates`
[INFO] [stdout]     --> src/attack/substitution.rs:1210:38
[INFO] [stdout]      |
[INFO] [stdout] 1210 |         let (extracted_cipherletter, extracted_candidates) = mapping.pop_item()
[INFO] [stdout]      |                                      ^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_extracted_candidates`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `loaded_dictionaries`
[INFO] [stdout]    --> src/attack/transposition.rs:100:13
[INFO] [stdout]     |
[INFO] [stdout] 100 |         let loaded_dictionaries = LoadedDictionaries::new();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loaded_dictionaries`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `loaded_dictionaries`
[INFO] [stdout]    --> src/attack/transposition.rs:109:13
[INFO] [stdout]     |
[INFO] [stdout] 109 |         let loaded_dictionaries = LoadedDictionaries::new();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loaded_dictionaries`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]    --> src/attack/frequency.rs:126:28
[INFO] [stdout]     |
[INFO] [stdout] 126 |                 .filter(|(&key, &_value)| _value == *value)
[INFO] [stdout]     |                            ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/attack/frequency.rs:164:25
[INFO] [stdout]     |
[INFO] [stdout] 164 |             .map(|(key, value)| key)
[INFO] [stdout]     |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/attack/frequency.rs:157:25
[INFO] [stdout]     |
[INFO] [stdout] 157 |             .map(|(key, value)| key)
[INFO] [stdout]     |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/attack/frequency.rs:269:28
[INFO] [stdout]     |
[INFO] [stdout] 269 |                        let mut values = sequences.get_mut(sequence_to_find).unwrap();
[INFO] [stdout]     |                            ----^^^^^^
[INFO] [stdout]     |                            |
[INFO] [stdout]     |                            help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `char`
[INFO] [stdout]    --> src/attack/frequency.rs:256:13
[INFO] [stdout]     |
[INFO] [stdout] 256 |     for (i, char) in char_string.chars().enumerate() {
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_char`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/attack/frequency.rs:383:21
[INFO] [stdout]     |
[INFO] [stdout] 383 |         .map(|(key, value)| key)
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ciphered_text`
[INFO] [stdout]   --> src/attack/vigenere.rs:36:26
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn brute_force<T, U>(ciphered_text: T, charset: U, testing: bool)-> Result<String>
[INFO] [stdout]    |                          ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ciphered_text`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `charset`
[INFO] [stdout]   --> src/attack/vigenere.rs:36:44
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn brute_force<T, U>(ciphered_text: T, charset: U, testing: bool)-> Result<String>
[INFO] [stdout]    |                                            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_charset`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `testing`
[INFO] [stdout]   --> src/attack/vigenere.rs:36:56
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn brute_force<T, U>(ciphered_text: T, charset: U, testing: bool)-> Result<String>
[INFO] [stdout]    |                                                        ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_testing`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ciphered_text`
[INFO] [stdout]   --> src/attack/vigenere.rs:47:23
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub fn brute_force_mp(ciphered_text: &str, charset: &str, testing: bool)-> Result<String> {
[INFO] [stdout]    |                       ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ciphered_text`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `charset`
[INFO] [stdout]   --> src/attack/vigenere.rs:47:44
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub fn brute_force_mp(ciphered_text: &str, charset: &str, testing: bool)-> Result<String> {
[INFO] [stdout]    |                                            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_charset`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `testing`
[INFO] [stdout]   --> src/attack/vigenere.rs:47:59
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub fn brute_force_mp(ciphered_text: &str, charset: &str, testing: bool)-> Result<String> {
[INFO] [stdout]    |                                                           ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_testing`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/cipher/transposition.rs:324:13
[INFO] [stdout]     |
[INFO] [stdout] 324 |         let mut transposition_matrix = vec![
[INFO] [stdout]     |             ----^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `offset_char` is never read
[INFO] [stdout]    --> src/cipher/vigenere.rs:101:31
[INFO] [stdout]     |
[INFO] [stdout] 101 |         let mut offset_char = String::new();
[INFO] [stdout]     |                               ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cifra` (lib test) due to 1 previous error; 69 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "f2ccd4e32650768f4d4c8040b671181f98b20a78d57c6cc8e2aa849c5e9576ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2ccd4e32650768f4d4c8040b671181f98b20a78d57c6cc8e2aa849c5e9576ee", kill_on_drop: false }`
[INFO] [stdout] f2ccd4e32650768f4d4c8040b671181f98b20a78d57c6cc8e2aa849c5e9576ee
