[INFO] cloning repository https://github.com/vickky06/BlockChain
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vickky06/BlockChain" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvickky06%2FBlockChain", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvickky06%2FBlockChain'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 062b6f806d183fe44c4f5227363325c53dd03f42
[INFO] checking vickky06/BlockChain against master#35d55b34bffd51384ac430cc20852b7d16dd5a90 for pr-145108
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvickky06%2FBlockChain" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/vickky06/BlockChain
[INFO] finished tweaking git repo https://github.com/vickky06/BlockChain
[INFO] tweaked toml for git repo https://github.com/vickky06/BlockChain written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/vickky06/BlockChain on toolchain 35d55b34bffd51384ac430cc20852b7d16dd5a90
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+35d55b34bffd51384ac430cc20852b7d16dd5a90" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/vickky06/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" "+35d55b34bffd51384ac430cc20852b7d16dd5a90" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+35d55b34bffd51384ac430cc20852b7d16dd5a90" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4b11f93e079331afd3993488ca3d0219d04bf4d5cd8e477af677d234c807b23f
[INFO] running `Command { std: "docker" "start" "-a" "4b11f93e079331afd3993488ca3d0219d04bf4d5cd8e477af677d234c807b23f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4b11f93e079331afd3993488ca3d0219d04bf4d5cd8e477af677d234c807b23f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b11f93e079331afd3993488ca3d0219d04bf4d5cd8e477af677d234c807b23f", kill_on_drop: false }`
[INFO] [stdout] 4b11f93e079331afd3993488ca3d0219d04bf4d5cd8e477af677d234c807b23f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+35d55b34bffd51384ac430cc20852b7d16dd5a90" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 02a1aee5230b1dad37646849a15aedb787aaa2ea8f92aec724b8af060234f34c
[INFO] running `Command { std: "docker" "start" "-a" "02a1aee5230b1dad37646849a15aedb787aaa2ea8f92aec724b8af060234f34c", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.5
[INFO] [stderr]    Compiling typenum v1.18.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.94
[INFO] [stderr]    Compiling libc v0.2.171
[INFO] [stderr]    Compiling getrandom v0.3.2
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling zerocopy v0.8.24
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]     Checking cpufeatures v0.2.17
[INFO] [stderr]     Checking pin-project-lite v0.2.16
[INFO] [stderr]     Checking bytes v1.10.1
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]     Checking iana-time-zone v0.1.62
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking tokio v1.44.1
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]     Checking chrono v0.4.40
[INFO] [stderr]     Checking rand_core v0.9.3
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stderr]     Checking rand v0.9.0
[INFO] [stderr]    Compiling async-trait v0.1.88
[INFO] [stderr]     Checking sha256 v1.6.0
[INFO] [stderr]     Checking rust_block_chain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `seq::SliceRandom`
[INFO] [stdout]  --> src/utils/generator.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand::{seq::SliceRandom, Rng};
[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: `seq::SliceRandom`
[INFO] [stdout]  --> src/utils/generator.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand::{seq::SliceRandom, Rng};
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `utils` should have an upper camel case name
[INFO] [stdout]  --> src/utils/generator.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct utils{
[INFO] [stdout]   |            ^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Utils`
[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: type `utils` should have an upper camel case name
[INFO] [stdout]  --> src/utils/generator.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct utils{
[INFO] [stdout]   |            ^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Utils`
[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 variable: `last_block`
[INFO] [stdout]   --> src/models/blockchain.rs:60:18
[INFO] [stdout]    |
[INFO] [stdout] 60 |             Some(last_block) => {
[INFO] [stdout]    |                  ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_last_block`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `last_block`
[INFO] [stdout]   --> src/models/blockchain.rs:60:18
[INFO] [stdout]    |
[INFO] [stdout] 60 |             Some(last_block) => {
[INFO] [stdout]    |                  ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_last_block`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/models/block.rs:63:48
[INFO] [stdout]    |
[INFO] [stdout] 63 |                 "{}{}{}{}{}", id, previous_hash.clone(), data.clone(),timestamp, nonce
[INFO] [stdout]    |                                                ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/models/block.rs:63:62
[INFO] [stdout]    |
[INFO] [stdout] 63 |                 "{}{}{}{}{}", id, previous_hash.clone(), data.clone(),timestamp, nonce
[INFO] [stdout]    |                                                              ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/models/block.rs:63:48
[INFO] [stdout]    |
[INFO] [stdout] 63 |                 "{}{}{}{}{}", id, previous_hash.clone(), data.clone(),timestamp, nonce
[INFO] [stdout]    |                                                ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/models/block.rs:63:62
[INFO] [stdout]    |
[INFO] [stdout] 63 |                 "{}{}{}{}{}", id, previous_hash.clone(), data.clone(),timestamp, nonce
[INFO] [stdout]    |                                                              ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.75s
[INFO] running `Command { std: "docker" "inspect" "02a1aee5230b1dad37646849a15aedb787aaa2ea8f92aec724b8af060234f34c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02a1aee5230b1dad37646849a15aedb787aaa2ea8f92aec724b8af060234f34c", kill_on_drop: false }`
[INFO] [stdout] 02a1aee5230b1dad37646849a15aedb787aaa2ea8f92aec724b8af060234f34c