[INFO] updating cached repository https://github.com/prajwaldp/blockchain-rust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] [stderr] From https://github.com/prajwaldp/blockchain-rust
[INFO] [stderr]    046e5b9..f1cead6  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f1cead6f76a7125b2fc6d926c6bfcf4d2af4d501
[INFO] checking prajwaldp/blockchain-rust against try#4662032ab74cd44d423120d08d251dfead4914a0 for pr-72788
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprajwaldp%2Fblockchain-rust" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/prajwaldp/blockchain-rust on toolchain 4662032ab74cd44d423120d08d251dfead4914a0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4662032ab74cd44d423120d08d251dfead4914a0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/prajwaldp/blockchain-rust
[INFO] finished tweaking git repo https://github.com/prajwaldp/blockchain-rust
[INFO] tweaked toml for git repo https://github.com/prajwaldp/blockchain-rust written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/prajwaldp/blockchain-rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4662032ab74cd44d423120d08d251dfead4914a0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+4662032ab74cd44d423120d08d251dfead4914a0" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 23858fd384c335911aa361e5749c672a3312c5bd54616a7bfad5dc6071731c53
[INFO] running `"docker" "start" "-a" "23858fd384c335911aa361e5749c672a3312c5bd54616a7bfad5dc6071731c53"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]    Compiling proc-macro2 v1.0.17
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[INFO] [stderr]    Compiling derive_more v0.99.7
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[INFO] [stderr]    Compiling actix-macros v0.1.2
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[INFO] [stderr]     Checking rust-blockchain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: associated function is never used: `verify`
[INFO] [stderr]    --> src/blockchain/transaction.rs:158:12
[INFO] [stderr]     |
[INFO] [stderr] 158 |     pub fn verify(&mut self, prev_txns: HashMap<String, &Transaction>) -> Result<bool, &str> {
[INFO] [stderr]     |            ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_address_valid`
[INFO] [stderr]   --> src/blockchain/wallet.rs:91:12
[INFO] [stderr]    |
[INFO] [stderr] 91 |     pub fn is_address_valid(address: &Bytes) -> bool {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `find_unspent_txn_outputs`
[INFO] [stderr]   --> src/blockchain/mod.rs:89:12
[INFO] [stderr]    |
[INFO] [stderr] 89 |     pub fn find_unspent_txn_outputs(&self, public_key_hash: Bytes) -> Vec<&TxnOutput> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `verify_transaction`
[INFO] [stderr]    --> src/blockchain/mod.rs:162:12
[INFO] [stderr]     |
[INFO] [stderr] 162 |     pub fn verify_transaction(&self, txn: &mut Transaction) -> bool {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `verify`
[INFO] [stderr]    --> src/blockchain/transaction.rs:158:12
[INFO] [stderr]     |
[INFO] [stderr] 158 |     pub fn verify(&mut self, prev_txns: HashMap<String, &Transaction>) -> Result<bool, &str> {
[INFO] [stderr]     |            ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_address_valid`
[INFO] [stderr]   --> src/blockchain/wallet.rs:91:12
[INFO] [stderr]    |
[INFO] [stderr] 91 |     pub fn is_address_valid(address: &Bytes) -> bool {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `find_unspent_txn_outputs`
[INFO] [stderr]   --> src/blockchain/mod.rs:89:12
[INFO] [stderr]    |
[INFO] [stderr] 89 |     pub fn find_unspent_txn_outputs(&self, public_key_hash: Bytes) -> Vec<&TxnOutput> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `verify_transaction`
[INFO] [stderr]    --> src/blockchain/mod.rs:162:12
[INFO] [stderr]     |
[INFO] [stderr] 162 |     pub fn verify_transaction(&self, txn: &mut Transaction) -> bool {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 57s
[INFO] running `"docker" "inspect" "23858fd384c335911aa361e5749c672a3312c5bd54616a7bfad5dc6071731c53"`
[INFO] running `"docker" "rm" "-f" "23858fd384c335911aa361e5749c672a3312c5bd54616a7bfad5dc6071731c53"`
[INFO] [stdout] 23858fd384c335911aa361e5749c672a3312c5bd54616a7bfad5dc6071731c53