[INFO] cloning repository https://github.com/mrb1nary/rust-blockchain
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mrb1nary/rust-blockchain" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrb1nary%2Frust-blockchain", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrb1nary%2Frust-blockchain'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 34eac208b8d15c6f512318ae53c89e6dde58b5f1
[INFO] testing mrb1nary/rust-blockchain 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%2Fmrb1nary%2Frust-blockchain" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mrb1nary/rust-blockchain
[INFO] finished tweaking git repo https://github.com/mrb1nary/rust-blockchain
[INFO] tweaked toml for git repo https://github.com/mrb1nary/rust-blockchain written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mrb1nary/rust-blockchain 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/mrb1nary/rust-blockchain 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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 98068416d603ad4d4d172365ea3ba30d1d3551fbc3a192876bf9f23fd8424124
[INFO] running `Command { std: "docker" "start" "-a" "98068416d603ad4d4d172365ea3ba30d1d3551fbc3a192876bf9f23fd8424124", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "98068416d603ad4d4d172365ea3ba30d1d3551fbc3a192876bf9f23fd8424124", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98068416d603ad4d4d172365ea3ba30d1d3551fbc3a192876bf9f23fd8424124", kill_on_drop: false }`
[INFO] [stdout] 98068416d603ad4d4d172365ea3ba30d1d3551fbc3a192876bf9f23fd8424124
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 095c2a89990175bddc3768be8de1d30c1045c41ae7e59f4f1d99b1de61547b8e
[INFO] running `Command { std: "docker" "start" "-a" "095c2a89990175bddc3768be8de1d30c1045c41ae7e59f4f1d99b1de61547b8e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling unicode-ident v1.0.16
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling serde_json v1.0.138
[INFO] [stderr]    Compiling ryu v1.0.19
[INFO] [stderr]    Compiling iana-time-zone v0.1.61
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling colored v3.0.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling serde v1.0.217
[INFO] [stderr]    Compiling sha2 v0.10.8
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling syn v2.0.98
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling chrono v0.4.39
[INFO] [stderr]    Compiling uuid v1.12.1
[INFO] [stderr]    Compiling serde_derive v1.0.217
[INFO] [stderr]    Compiling rust_blockchain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `transaction1`
[INFO] [stdout]   --> src/main.rs:32:17
[INFO] [stdout]    |
[INFO] [stdout] 32 |     if let Some(transaction1) = soldaddy_wallet.transfer(bob_wallet.address.clone(), 5.0) {
[INFO] [stdout]    |                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_transaction1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `transaction2`
[INFO] [stdout]   --> src/main.rs:37:17
[INFO] [stdout]    |
[INFO] [stdout] 37 |     if let Some(transaction2) = bob_wallet.transfer(charlie_wallet.address.clone(), 2.0) {
[INFO] [stdout]    |                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_transaction2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `transaction3`
[INFO] [stdout]   --> src/main.rs:42:17
[INFO] [stdout]    |
[INFO] [stdout] 42 |     if let Some(transaction3) = charlie_wallet.transfer(dave_wallet.address.clone(), 1.5) {
[INFO] [stdout]    |                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_transaction3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `transaction4`
[INFO] [stdout]   --> src/main.rs:47:17
[INFO] [stdout]    |
[INFO] [stdout] 47 |     if let Some(transaction4) = dave_wallet.transfer(soldaddy_wallet.address.clone(), 0.5) {
[INFO] [stdout]    |                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_transaction4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_balance` is never used
[INFO] [stdout]   --> src/wallet.rs:69:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Wallet {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 69 |     pub fn get_balance(&self) -> f64 {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.22s
[INFO] running `Command { std: "docker" "inspect" "095c2a89990175bddc3768be8de1d30c1045c41ae7e59f4f1d99b1de61547b8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "095c2a89990175bddc3768be8de1d30c1045c41ae7e59f4f1d99b1de61547b8e", kill_on_drop: false }`
[INFO] [stdout] 095c2a89990175bddc3768be8de1d30c1045c41ae7e59f4f1d99b1de61547b8e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 86e8827f1ee3ebe51916ec45f7478df9693aad1dd97944622c19e029b82c8450
[INFO] running `Command { std: "docker" "start" "-a" "86e8827f1ee3ebe51916ec45f7478df9693aad1dd97944622c19e029b82c8450", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_blockchain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `transaction1`
[INFO] [stdout]   --> src/main.rs:32:17
[INFO] [stdout]    |
[INFO] [stdout] 32 |     if let Some(transaction1) = soldaddy_wallet.transfer(bob_wallet.address.clone(), 5.0) {
[INFO] [stdout]    |                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_transaction1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `transaction2`
[INFO] [stdout]   --> src/main.rs:37:17
[INFO] [stdout]    |
[INFO] [stdout] 37 |     if let Some(transaction2) = bob_wallet.transfer(charlie_wallet.address.clone(), 2.0) {
[INFO] [stdout]    |                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_transaction2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `transaction3`
[INFO] [stdout]   --> src/main.rs:42:17
[INFO] [stdout]    |
[INFO] [stdout] 42 |     if let Some(transaction3) = charlie_wallet.transfer(dave_wallet.address.clone(), 1.5) {
[INFO] [stdout]    |                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_transaction3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `transaction4`
[INFO] [stdout]   --> src/main.rs:47:17
[INFO] [stdout]    |
[INFO] [stdout] 47 |     if let Some(transaction4) = dave_wallet.transfer(soldaddy_wallet.address.clone(), 0.5) {
[INFO] [stdout]    |                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_transaction4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_balance` is never used
[INFO] [stdout]   --> src/wallet.rs:69:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Wallet {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 69 |     pub fn get_balance(&self) -> f64 {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `Command { std: "docker" "inspect" "86e8827f1ee3ebe51916ec45f7478df9693aad1dd97944622c19e029b82c8450", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86e8827f1ee3ebe51916ec45f7478df9693aad1dd97944622c19e029b82c8450", kill_on_drop: false }`
[INFO] [stdout] 86e8827f1ee3ebe51916ec45f7478df9693aad1dd97944622c19e029b82c8450
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 31620f9fd243f65f20e175157156bb686a587af9096e52cb795af7d7bd8ae149
[INFO] running `Command { std: "docker" "start" "-a" "31620f9fd243f65f20e175157156bb686a587af9096e52cb795af7d7bd8ae149", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `transaction1`
[INFO] [stderr]   --> src/main.rs:32:17
[INFO] [stderr]    |
[INFO] [stderr] 32 |     if let Some(transaction1) = soldaddy_wallet.transfer(bob_wallet.address.clone(), 5.0) {
[INFO] [stderr]    |                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_transaction1`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `transaction2`
[INFO] [stderr]   --> src/main.rs:37:17
[INFO] [stderr]    |
[INFO] [stderr] 37 |     if let Some(transaction2) = bob_wallet.transfer(charlie_wallet.address.clone(), 2.0) {
[INFO] [stderr]    |                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_transaction2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `transaction3`
[INFO] [stderr]   --> src/main.rs:42:17
[INFO] [stderr]    |
[INFO] [stderr] 42 |     if let Some(transaction3) = charlie_wallet.transfer(dave_wallet.address.clone(), 1.5) {
[INFO] [stderr]    |                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_transaction3`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `transaction4`
[INFO] [stderr]   --> src/main.rs:47:17
[INFO] [stderr]    |
[INFO] [stderr] 47 |     if let Some(transaction4) = dave_wallet.transfer(soldaddy_wallet.address.clone(), 0.5) {
[INFO] [stderr]    |                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_transaction4`
[INFO] [stderr] 
[INFO] [stderr] warning: method `get_balance` is never used
[INFO] [stderr]   --> src/wallet.rs:69:12
[INFO] [stderr]    |
[INFO] [stderr] 12 | impl Wallet {
[INFO] [stderr]    | ----------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 69 |     pub fn get_balance(&self) -> f64 {
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_blockchain` (bin "rust_blockchain" test) generated 5 warnings (run `cargo fix --bin "rust_blockchain" -p rust_blockchain --tests` to apply 4 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_blockchain-c5ee642096c2e067)
[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" "31620f9fd243f65f20e175157156bb686a587af9096e52cb795af7d7bd8ae149", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31620f9fd243f65f20e175157156bb686a587af9096e52cb795af7d7bd8ae149", kill_on_drop: false }`
[INFO] [stdout] 31620f9fd243f65f20e175157156bb686a587af9096e52cb795af7d7bd8ae149
