[INFO] cloning repository https://github.com/mitic0320/learnblockchain-challenge
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mitic0320/learnblockchain-challenge" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmitic0320%2Flearnblockchain-challenge", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmitic0320%2Flearnblockchain-challenge'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 999cce95578b73396a82b7d4daa9f1e4fc10c9c1
[INFO] testing mitic0320/learnblockchain-challenge against beta-2026-04-21 for beta-1.96-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmitic0320%2Flearnblockchain-challenge" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mitic0320/learnblockchain-challenge
[INFO] finished tweaking git repo https://github.com/mitic0320/learnblockchain-challenge
[INFO] tweaked toml for git repo https://github.com/mitic0320/learnblockchain-challenge written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mitic0320/learnblockchain-challenge on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mitic0320/learnblockchain-challenge 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" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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_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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a4f8e721ab3a4d6ccbd46e9252ccde17331dfd57357a81bcf32bfe29649df6fa
[INFO] running `Command { std: "docker" "start" "-a" "a4f8e721ab3a4d6ccbd46e9252ccde17331dfd57357a81bcf32bfe29649df6fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a4f8e721ab3a4d6ccbd46e9252ccde17331dfd57357a81bcf32bfe29649df6fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4f8e721ab3a4d6ccbd46e9252ccde17331dfd57357a81bcf32bfe29649df6fa", kill_on_drop: false }`
[INFO] [stdout] a4f8e721ab3a4d6ccbd46e9252ccde17331dfd57357a81bcf32bfe29649df6fa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a4ec922121bb77f3afa12a8d025c542cdf61010a565d8af838afa90521f88e2b
[INFO] running `Command { std: "docker" "start" "-a" "a4ec922121bb77f3afa12a8d025c542cdf61010a565d8af838afa90521f88e2b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]    Compiling const-oid v0.9.6
[INFO] [stderr]    Compiling subtle v2.6.1
[INFO] [stderr]    Compiling base64ct v1.7.0
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling base16ct v0.2.0
[INFO] [stderr]    Compiling crunchy v0.2.4
[INFO] [stderr]    Compiling num-bigint-dig v0.8.4
[INFO] [stderr]    Compiling lazy_static v1.5.0
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling pem-rfc7468 v0.7.0
[INFO] [stderr]    Compiling der v0.7.10
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]    Compiling block-buffer v0.10.4
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling hmac v0.12.1
[INFO] [stderr]    Compiling sha2 v0.10.9
[INFO] [stderr]    Compiling num-iter v0.1.45
[INFO] [stderr]    Compiling ff v0.13.1
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling crypto-bigint v0.5.5
[INFO] [stderr]    Compiling spki v0.7.3
[INFO] [stderr]    Compiling group v0.13.0
[INFO] [stderr]    Compiling sec1 v0.7.3
[INFO] [stderr]    Compiling signature v2.2.0
[INFO] [stderr]    Compiling rfc6979 v0.4.0
[INFO] [stderr]    Compiling pkcs8 v0.10.2
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling pkcs1 v0.7.5
[INFO] [stderr]    Compiling elliptic-curve v0.13.8
[INFO] [stderr]    Compiling rsa v0.9.8
[INFO] [stderr]    Compiling ecdsa v0.16.9
[INFO] [stderr]    Compiling k256 v0.13.4
[INFO] [stderr]    Compiling pow-hash-cli v0.1.0 (/opt/rustwide/workdir/pow-hash-cli)
[INFO] [stdout] warning: unused import: `Keypair`
[INFO] [stdout]  --> pow-hash-cli/src/bin/rsa_sign.rs:3:22
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rsa::signature::{Keypair, RandomizedSigner, SignatureEncoding, Verifier};
[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: `RandomizedSigner`
[INFO] [stdout]  --> pow-hash-cli/src/bin/rsa_sign.rs:3:31
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rsa::signature::{Keypair, RandomizedSigner, SignatureEncoding, Verifier};
[INFO] [stdout]   |                               ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SignatureEncoding`
[INFO] [stdout]  --> pow-hash-cli/src/bin/rsa_sign.rs:3:49
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rsa::signature::{Keypair, RandomizedSigner, SignatureEncoding, Verifier};
[INFO] [stdout]   |                                                 ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Verifier`
[INFO] [stdout]  --> pow-hash-cli/src/bin/rsa_sign.rs:3:68
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rsa::signature::{Keypair, RandomizedSigner, SignatureEncoding, Verifier};
[INFO] [stdout]   |                                                                    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hash_str`
[INFO] [stdout]   --> pow-hash-cli/src/bin/rsa_sign.rs:39:15
[INFO] [stdout]    |
[INFO] [stdout] 39 |   let (input, hash_str) = calculate_hash_with_prefix(prefix, 4);
[INFO] [stdout]    |               ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hash_str`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Keypair`, `RandomizedSigner`, `SignatureEncoding`, and `Verifier`
[INFO] [stdout]  --> pow-hash-cli/src/main.rs:2:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rsa::signature::{Keypair, RandomizedSigner, SignatureEncoding, Verifier};
[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: `RsaPublicKey`
[INFO] [stdout]  --> pow-hash-cli/src/main.rs:3:31
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rsa::{Pss, RsaPrivateKey, RsaPublicKey};
[INFO] [stdout]   |                               ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.03s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: num-bigint-dig v0.8.4
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "a4ec922121bb77f3afa12a8d025c542cdf61010a565d8af838afa90521f88e2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4ec922121bb77f3afa12a8d025c542cdf61010a565d8af838afa90521f88e2b", kill_on_drop: false }`
[INFO] [stdout] a4ec922121bb77f3afa12a8d025c542cdf61010a565d8af838afa90521f88e2b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1e8a0adc17eba0914b60d660cd4cebdeeb565af221685f7ca5e84977195d3825
[INFO] running `Command { std: "docker" "start" "-a" "1e8a0adc17eba0914b60d660cd4cebdeeb565af221685f7ca5e84977195d3825", kill_on_drop: false }`
[INFO] [stderr]    Compiling pow-hash-cli v0.1.0 (/opt/rustwide/workdir/pow-hash-cli)
[INFO] [stdout] warning: unused imports: `Keypair`, `RandomizedSigner`, `SignatureEncoding`, and `Verifier`
[INFO] [stdout]  --> pow-hash-cli/src/main.rs:2:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rsa::signature::{Keypair, RandomizedSigner, SignatureEncoding, Verifier};
[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: `RsaPublicKey`
[INFO] [stdout]  --> pow-hash-cli/src/main.rs:3:31
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rsa::{Pss, RsaPrivateKey, RsaPublicKey};
[INFO] [stdout]   |                               ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Keypair`
[INFO] [stdout]  --> pow-hash-cli/src/bin/rsa_sign.rs:3:22
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rsa::signature::{Keypair, RandomizedSigner, SignatureEncoding, Verifier};
[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: `RandomizedSigner`
[INFO] [stdout]  --> pow-hash-cli/src/bin/rsa_sign.rs:3:31
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rsa::signature::{Keypair, RandomizedSigner, SignatureEncoding, Verifier};
[INFO] [stdout]   |                               ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SignatureEncoding`
[INFO] [stdout]  --> pow-hash-cli/src/bin/rsa_sign.rs:3:49
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rsa::signature::{Keypair, RandomizedSigner, SignatureEncoding, Verifier};
[INFO] [stdout]   |                                                 ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Verifier`
[INFO] [stdout]  --> pow-hash-cli/src/bin/rsa_sign.rs:3:68
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rsa::signature::{Keypair, RandomizedSigner, SignatureEncoding, Verifier};
[INFO] [stdout]   |                                                                    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hash_str`
[INFO] [stdout]   --> pow-hash-cli/src/bin/rsa_sign.rs:39:15
[INFO] [stdout]    |
[INFO] [stdout] 39 |   let (input, hash_str) = calculate_hash_with_prefix(prefix, 4);
[INFO] [stdout]    |               ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hash_str`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.68s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: num-bigint-dig v0.8.4
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "1e8a0adc17eba0914b60d660cd4cebdeeb565af221685f7ca5e84977195d3825", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e8a0adc17eba0914b60d660cd4cebdeeb565af221685f7ca5e84977195d3825", kill_on_drop: false }`
[INFO] [stdout] 1e8a0adc17eba0914b60d660cd4cebdeeb565af221685f7ca5e84977195d3825
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5e6e77282398d945f8a254329c79ae7b32655987d16ae95dcecfa3f40164950a
[INFO] running `Command { std: "docker" "start" "-a" "5e6e77282398d945f8a254329c79ae7b32655987d16ae95dcecfa3f40164950a", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `Keypair`, `RandomizedSigner`, `SignatureEncoding`, and `Verifier`
[INFO] [stderr]  --> pow-hash-cli/src/main.rs:2:22
[INFO] [stderr]   |
[INFO] [stderr] 2 | use rsa::signature::{Keypair, RandomizedSigner, SignatureEncoding, Verifier};
[INFO] [stderr]   |                      ^^^^^^^  ^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^  ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `RsaPublicKey`
[INFO] [stderr]  --> pow-hash-cli/src/main.rs:3:31
[INFO] [stderr]   |
[INFO] [stderr] 3 | use rsa::{Pss, RsaPrivateKey, RsaPublicKey};
[INFO] [stderr]   |                               ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Keypair`
[INFO] [stderr]  --> pow-hash-cli/src/bin/rsa_sign.rs:3:22
[INFO] [stderr]   |
[INFO] [stderr] 3 | use rsa::signature::{Keypair, RandomizedSigner, SignatureEncoding, Verifier};
[INFO] [stderr]   |                      ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `RandomizedSigner`
[INFO] [stderr]  --> pow-hash-cli/src/bin/rsa_sign.rs:3:31
[INFO] [stderr]   |
[INFO] [stderr] 3 | use rsa::signature::{Keypair, RandomizedSigner, SignatureEncoding, Verifier};
[INFO] [stderr]   |                               ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `SignatureEncoding`
[INFO] [stderr]  --> pow-hash-cli/src/bin/rsa_sign.rs:3:49
[INFO] [stderr]   |
[INFO] [stderr] 3 | use rsa::signature::{Keypair, RandomizedSigner, SignatureEncoding, Verifier};
[INFO] [stderr]   |                                                 ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Verifier`
[INFO] [stderr]  --> pow-hash-cli/src/bin/rsa_sign.rs:3:68
[INFO] [stderr]   |
[INFO] [stderr] 3 | use rsa::signature::{Keypair, RandomizedSigner, SignatureEncoding, Verifier};
[INFO] [stderr]   |                                                                    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hash_str`
[INFO] [stderr]   --> pow-hash-cli/src/bin/rsa_sign.rs:39:15
[INFO] [stderr]    |
[INFO] [stderr] 39 |   let (input, hash_str) = calculate_hash_with_prefix(prefix, 4);
[INFO] [stderr]    |               ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hash_str`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `pow-hash-cli` (bin "pow-hash-cli" test) generated 2 warnings (run `cargo fix --bin "pow-hash-cli" -p pow-hash-cli --tests` to apply 2 suggestions)
[INFO] [stderr] warning: `pow-hash-cli` (bin "rsa_sign" test) generated 5 warnings (run `cargo fix --bin "rsa_sign" -p pow-hash-cli --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: num-bigint-dig v0.8.4
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/pow_hash_cli-f99d356dd8e10d54)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/calculate_hash.rs (/opt/rustwide/target/debug/deps/calculate_hash-ae95631e1fff6bdf)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ecdsa_sign.rs (/opt/rustwide/target/debug/deps/ecdsa_sign-8a6973ac14ba782e)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/pow_hash_cli-622b3a54c65dbec6)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/rsa_sign.rs (/opt/rustwide/target/debug/deps/rsa_sign-00c041fee12b5699)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests pow_hash_cli
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5e6e77282398d945f8a254329c79ae7b32655987d16ae95dcecfa3f40164950a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e6e77282398d945f8a254329c79ae7b32655987d16ae95dcecfa3f40164950a", kill_on_drop: false }`
[INFO] [stdout] 5e6e77282398d945f8a254329c79ae7b32655987d16ae95dcecfa3f40164950a
