[INFO] cloning repository https://github.com/werner/firstcoin
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/werner/firstcoin" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwerner%2Ffirstcoin", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwerner%2Ffirstcoin'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 09697aa78c8e98bb14188f07b4ff163c31c4b1a9
[INFO] checking werner/firstcoin against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwerner%2Ffirstcoin" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/werner/firstcoin on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/werner/firstcoin
[INFO] finished tweaking git repo https://github.com/werner/firstcoin
[INFO] tweaked toml for git repo https://github.com/werner/firstcoin written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/werner/firstcoin already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 31629e72a81e4324956fae0480497baf180072c72484bd889dac07dd43fde2e2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "31629e72a81e4324956fae0480497baf180072c72484bd889dac07dd43fde2e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "31629e72a81e4324956fae0480497baf180072c72484bd889dac07dd43fde2e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31629e72a81e4324956fae0480497baf180072c72484bd889dac07dd43fde2e2", kill_on_drop: false }`
[INFO] [stdout] 31629e72a81e4324956fae0480497baf180072c72484bd889dac07dd43fde2e2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ab0856e381cdc67030b9a6f6bc838809ceccd999edb6233a8905481f824d47c0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ab0856e381cdc67030b9a6f6bc838809ceccd999edb6233a8905481f824d47c0", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling either v1.4.0
[INFO] [stderr]    Compiling rayon-core v1.3.0
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]    Compiling coco v0.1.1
[INFO] [stderr]     Checking itertools v0.5.10
[INFO] [stderr]     Checking parity-wordlist v1.2.0
[INFO] [stderr]    Compiling rayon v0.8.2
[INFO] [stderr]    Compiling ring v0.12.1
[INFO] [stderr]     Checking firstcoin v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `digest`, `signature`
[INFO] [stdout]  --> src/wallet.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | use ring::{digest, signature, rand, agreement};
[INFO] [stdout]   |            ^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `digest`, `signature`
[INFO] [stdout]  --> src/wallet.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | use ring::{digest, signature, rand, agreement};
[INFO] [stdout]   |            ^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `generate_hash`
[INFO] [stdout]  --> src/string_utils.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn generate_hash() -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Wallet`
[INFO] [stdout]  --> src/wallet.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Wallet {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/wallet.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 |   pub fn new() -> Wallet {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `generate_keys`
[INFO] [stdout]   --> src/wallet.rs:17:10
[INFO] [stdout]    |
[INFO] [stdout] 17 |   pub fn generate_keys(&mut self) -> &Wallet {
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `PublicKey`
[INFO] [stdout]  --> src/transaction.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | type PublicKey = String;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `TransactionInput`
[INFO] [stdout]  --> src/transaction.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct TransactionInput {}
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `TransactionOutput`
[INFO] [stdout]  --> src/transaction.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct TransactionOutput {}
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Transaction`
[INFO] [stdout]  --> src/transaction.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Transaction {
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/transaction.rs:19:10
[INFO] [stdout]    |
[INFO] [stdout] 19 |   pub fn new(from: PublicKey, to: PublicKey, value: f64, inputs: Vec<TransactionInput>, sequence: i32) -> Transaction {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `generate_hash`
[INFO] [stdout]  --> src/string_utils.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn generate_hash() -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Wallet`
[INFO] [stdout]  --> src/wallet.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Wallet {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/wallet.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 |   pub fn new() -> Wallet {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `generate_keys`
[INFO] [stdout]   --> src/wallet.rs:17:10
[INFO] [stdout]    |
[INFO] [stdout] 17 |   pub fn generate_keys(&mut self) -> &Wallet {
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `PublicKey`
[INFO] [stdout]  --> src/transaction.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | type PublicKey = String;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `TransactionInput`
[INFO] [stdout]  --> src/transaction.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct TransactionInput {}
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `TransactionOutput`
[INFO] [stdout]  --> src/transaction.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct TransactionOutput {}
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Transaction`
[INFO] [stdout]  --> src/transaction.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Transaction {
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/transaction.rs:19:10
[INFO] [stdout]    |
[INFO] [stdout] 19 |   pub fn new(from: PublicKey, to: PublicKey, value: f64, inputs: Vec<TransactionInput>, sequence: i32) -> Transaction {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.33s
[INFO] running `Command { std: "docker" "inspect" "ab0856e381cdc67030b9a6f6bc838809ceccd999edb6233a8905481f824d47c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab0856e381cdc67030b9a6f6bc838809ceccd999edb6233a8905481f824d47c0", kill_on_drop: false }`
[INFO] [stdout] ab0856e381cdc67030b9a6f6bc838809ceccd999edb6233a8905481f824d47c0