[INFO] cloning repository https://github.com/gravit22/ithkuil_learning
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[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgravit22%2Fithkuil_learning" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
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[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/gravit22/ithkuil_learning
[INFO] finished tweaking git repo https://github.com/gravit22/ithkuil_learning
[INFO] tweaked toml for git repo https://github.com/gravit22/ithkuil_learning written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/gravit22/ithkuil_learning on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6
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[INFO] crate git repo https://github.com/gravit22/ithkuil_learning already has a lockfile, it will not be regenerated
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[INFO] [stderr]    Compiling ithkuil_learning v0.2.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/checks.rs:157:9
[INFO] [stdout]     |
[INFO] [stdout] 157 |     let mut variants = slot4_variants(data, key);
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/checks.rs:168:9
[INFO] [stdout]     |
[INFO] [stdout] 168 |     let mut variants = slot6_variants(data, key);
[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/checks.rs:179:9
[INFO] [stdout]     |
[INFO] [stdout] 179 |     let mut variants = referential_variants(data, key);
[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/checks.rs:190:9
[INFO] [stdout]     |
[INFO] [stdout] 190 |     let mut variants = slot8_variants(data, key);
[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/checks.rs:201:9
[INFO] [stdout]     |
[INFO] [stdout] 201 |     let mut variants = slot9iev_variants(data, key);
[INFO] [stdout]     |         ----^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item1`
[INFO] [stdout]    --> src/checks.rs:215:18
[INFO] [stdout]     |
[INFO] [stdout] 215 |     for (f_idx, &item1) in bytes.iter().enumerate() {
[INFO] [stdout]     |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_item1`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item2`
[INFO] [stdout]    --> src/checks.rs:216:22
[INFO] [stdout]     |
[INFO] [stdout] 216 |         for (s_idx, &item2) in bytes.iter().enumerate() {
[INFO] [stdout]     |                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_item2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `difficulty`
[INFO] [stdout]   --> src/checks.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let difficulty = 0.2;
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_difficulty`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/checks.rs:146:9
[INFO] [stdout]     |
[INFO] [stdout] 146 |     let mut variants = slot2_variants(data, key);
[INFO] [stdout]     |         ----^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Enumerate` that must be used
[INFO] [stdout]   --> src/checks.rs:49:5
[INFO] [stdout]    |
[INFO] [stdout] 49 |     probabilities.iter().enumerate();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: iterators are lazy and do nothing unless consumed
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 49 |     let _ = probabilities.iter().enumerate();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 22s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v6.1.2
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "62f8953af869964d35c94730e7bb71a36498bf647dfdc3ffb136e5a36af5ce64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62f8953af869964d35c94730e7bb71a36498bf647dfdc3ffb136e5a36af5ce64", kill_on_drop: false }`
[INFO] [stdout] 62f8953af869964d35c94730e7bb71a36498bf647dfdc3ffb136e5a36af5ce64
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 16de14694f253b0538ae5d08d5672e9ab613f095f704f53cd3bf9c8c13183cc5
[INFO] running `Command { std: "docker" "start" "-a" "16de14694f253b0538ae5d08d5672e9ab613f095f704f53cd3bf9c8c13183cc5", kill_on_drop: false }`
[INFO] [stderr]    Compiling ithkuil_learning v0.2.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/checks.rs:157:9
[INFO] [stdout]     |
[INFO] [stdout] 157 |     let mut variants = slot4_variants(data, key);
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/checks.rs:168:9
[INFO] [stdout]     |
[INFO] [stdout] 168 |     let mut variants = slot6_variants(data, key);
[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/checks.rs:179:9
[INFO] [stdout]     |
[INFO] [stdout] 179 |     let mut variants = referential_variants(data, key);
[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/checks.rs:190:9
[INFO] [stdout]     |
[INFO] [stdout] 190 |     let mut variants = slot8_variants(data, key);
[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/checks.rs:201:9
[INFO] [stdout]     |
[INFO] [stdout] 201 |     let mut variants = slot9iev_variants(data, key);
[INFO] [stdout]     |         ----^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item1`
[INFO] [stdout]    --> src/checks.rs:215:18
[INFO] [stdout]     |
[INFO] [stdout] 215 |     for (f_idx, &item1) in bytes.iter().enumerate() {
[INFO] [stdout]     |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_item1`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item2`
[INFO] [stdout]    --> src/checks.rs:216:22
[INFO] [stdout]     |
[INFO] [stdout] 216 |         for (s_idx, &item2) in bytes.iter().enumerate() {
[INFO] [stdout]     |                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_item2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `difficulty`
[INFO] [stdout]   --> src/checks.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let difficulty = 0.2;
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_difficulty`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/checks.rs:146:9
[INFO] [stdout]     |
[INFO] [stdout] 146 |     let mut variants = slot2_variants(data, key);
[INFO] [stdout]     |         ----^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Enumerate` that must be used
[INFO] [stdout]   --> src/checks.rs:49:5
[INFO] [stdout]    |
[INFO] [stdout] 49 |     probabilities.iter().enumerate();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: iterators are lazy and do nothing unless consumed
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 49 |     let _ = probabilities.iter().enumerate();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ithkuil_learning`
[INFO] [stdout]  --> tests/allomorphic_substitutions.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ithkuil_learning;
[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: `ithkuil_learning::variants::*`
[INFO] [stdout]  --> tests/slot2.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use ithkuil_learning::variants::*;
[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: `ithkuil_learning::checks::*`
[INFO] [stdout]  --> tests/common/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ithkuil_learning::checks::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ithkuil_learning::variants::*`
[INFO] [stdout]  --> tests/slot4.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use ithkuil_learning::variants::*;
[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: `ithkuil_learning::checks::*`
[INFO] [stdout]  --> tests/common/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ithkuil_learning::checks::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]  --> tests/common/mod.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn test() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]  --> tests/common/mod.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn test() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ithkuil_learning::variants::*`
[INFO] [stdout]  --> tests/referential.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use ithkuil_learning::variants::*;
[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: `ithkuil_learning::checks::*`
[INFO] [stdout]  --> tests/common/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ithkuil_learning::checks::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ithkuil_learning::variants::*`
[INFO] [stdout]  --> tests/slot9.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use ithkuil_learning::variants::*;
[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: `ithkuil_learning::checks::*`
[INFO] [stdout]  --> tests/common/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ithkuil_learning::checks::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]  --> tests/common/mod.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn test() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ithkuil_learning::variants::*`
[INFO] [stdout]  --> tests/slot6.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use ithkuil_learning::variants::*;
[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: `ithkuil_learning::checks::*`
[INFO] [stdout]  --> tests/common/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ithkuil_learning::checks::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ithkuil_learning::variants::*`
[INFO] [stdout]  --> tests/slot8.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use ithkuil_learning::variants::*;
[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: `ithkuil_learning::checks::*`
[INFO] [stdout]  --> tests/common/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ithkuil_learning::checks::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]  --> tests/common/mod.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn test() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]  --> tests/common/mod.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn test() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]  --> tests/common/mod.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn test() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/checks.rs:168:9
[INFO] [stdout]     |
[INFO] [stdout] 168 |     let mut variants = slot6_variants(data, key);
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/checks.rs:179:9
[INFO] [stdout]     |
[INFO] [stdout] 179 |     let mut variants = referential_variants(data, key);
[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/checks.rs:190:9
[INFO] [stdout]     |
[INFO] [stdout] 190 |     let mut variants = slot8_variants(data, key);
[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/checks.rs:201:9
[INFO] [stdout]     |
[INFO] [stdout] 201 |     let mut variants = slot9iev_variants(data, key);
[INFO] [stdout]     |         ----^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `difficulty`
[INFO] [stdout]   --> src/checks.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let difficulty = 0.2;
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_difficulty`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item1`
[INFO] [stdout]    --> src/checks.rs:215:18
[INFO] [stdout]     |
[INFO] [stdout] 215 |     for (f_idx, &item1) in bytes.iter().enumerate() {
[INFO] [stdout]     |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_item1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item2`
[INFO] [stdout]    --> src/checks.rs:216:22
[INFO] [stdout]     |
[INFO] [stdout] 216 |         for (s_idx, &item2) in bytes.iter().enumerate() {
[INFO] [stdout]     |                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_item2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/checks.rs:146:9
[INFO] [stdout]     |
[INFO] [stdout] 146 |     let mut variants = slot2_variants(data, key);
[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/checks.rs:157:9
[INFO] [stdout]     |
[INFO] [stdout] 157 |     let mut variants = slot4_variants(data, key);
[INFO] [stdout]     |         ----^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Enumerate` that must be used
[INFO] [stdout]   --> src/checks.rs:49:5
[INFO] [stdout]    |
[INFO] [stdout] 49 |     probabilities.iter().enumerate();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: iterators are lazy and do nothing unless consumed
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 49 |     let _ = probabilities.iter().enumerate();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.93s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v6.1.2
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "16de14694f253b0538ae5d08d5672e9ab613f095f704f53cd3bf9c8c13183cc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16de14694f253b0538ae5d08d5672e9ab613f095f704f53cd3bf9c8c13183cc5", kill_on_drop: false }`
[INFO] [stdout] 16de14694f253b0538ae5d08d5672e9ab613f095f704f53cd3bf9c8c13183cc5
