[INFO] fetching crate libbruteforce 2.2.2...
[INFO] checking libbruteforce-2.2.2 against master#c5fbcd35a8217a17f6b63a22217ace06cf8f5f02 for pr-86194
[INFO] extracting crate libbruteforce 2.2.2 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate libbruteforce 2.2.2 on toolchain c5fbcd35a8217a17f6b63a22217ace06cf8f5f02
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libbruteforce 2.2.2
[INFO] finished tweaking crates.io crate libbruteforce 2.2.2
[INFO] tweaked toml for crates.io crate libbruteforce 2.2.2 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 32153b0928b5aca288b8aacecab421d4eb1cf94dc26331d932e5321b79979676
[INFO] running `Command { std: "docker" "start" "-a" "32153b0928b5aca288b8aacecab421d4eb1cf94dc26331d932e5321b79979676", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "32153b0928b5aca288b8aacecab421d4eb1cf94dc26331d932e5321b79979676", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32153b0928b5aca288b8aacecab421d4eb1cf94dc26331d932e5321b79979676", kill_on_drop: false }`
[INFO] [stdout] 32153b0928b5aca288b8aacecab421d4eb1cf94dc26331d932e5321b79979676
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1d65772a84971fad2ae3f72a53540bdbb4e61c31205fd6f66b7d0b0078b810ad
[INFO] running `Command { std: "docker" "start" "-a" "1d65772a84971fad2ae3f72a53540bdbb4e61c31205fd6f66b7d0b0078b810ad", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking md5 v0.7.0
[INFO] [stderr]     Checking sha1 v0.6.0
[INFO] [stderr]     Checking sha2 v0.8.2
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking libbruteforce v2.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `indices_word_length`
[INFO] [stdout]   --> src/crack/indices.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub fn indices_word_length(indices: &[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: &str) -> 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: &str) -> 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: &str) -> CrackParameter {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/symbols/builder.rs:151:13
[INFO] [stdout]     |
[INFO] [stdout] 151 |         let mut builder = Builder::new();
[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:185:13
[INFO] [stdout]     |
[INFO] [stdout] 185 |         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:191:13
[INFO] [stdout]     |
[INFO] [stdout] 191 |         let mut builder = Builder::new();
[INFO] [stdout]     |             ----^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/crack/indices.rs:177:9
[INFO] [stdout]     |
[INFO] [stdout] 177 |         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 `Result` that must be used
[INFO] [stdout]    --> src/crack/indices.rs:192:9
[INFO] [stdout]     |
[INFO] [stdout] 192 |         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 `Result` that must be used
[INFO] [stdout]    --> src/crack/indices.rs:202:9
[INFO] [stdout]     |
[INFO] [stdout] 202 |         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 `Result` that must be used
[INFO] [stdout]    --> src/crack/indices.rs:229:9
[INFO] [stdout]     |
[INFO] [stdout] 229 |         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 `Result` that must be used
[INFO] [stdout]    --> src/crack/indices.rs:241:9
[INFO] [stdout]     |
[INFO] [stdout] 241 |         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 `Result` that must be used
[INFO] [stdout]    --> src/crack/indices.rs:243:9
[INFO] [stdout]     |
[INFO] [stdout] 243 |         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: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.47s
[INFO] running `Command { std: "docker" "inspect" "1d65772a84971fad2ae3f72a53540bdbb4e61c31205fd6f66b7d0b0078b810ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d65772a84971fad2ae3f72a53540bdbb4e61c31205fd6f66b7d0b0078b810ad", kill_on_drop: false }`
[INFO] [stdout] 1d65772a84971fad2ae3f72a53540bdbb4e61c31205fd6f66b7d0b0078b810ad