[INFO] cloning repository https://github.com/RedStoneCoin/redstone-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/RedStoneCoin/redstone-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRedStoneCoin%2Fredstone-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRedStoneCoin%2Fredstone-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1df86a7e217b5ca12294ce5a31880f1a7c9774d8
[INFO] checking RedStoneCoin/redstone-rs against try#3d9fdbff4f377de96b3a51174e7a64086bee9a5c for pr-81477
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRedStoneCoin%2Fredstone-rs" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/RedStoneCoin/redstone-rs on toolchain 3d9fdbff4f377de96b3a51174e7a64086bee9a5c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/RedStoneCoin/redstone-rs
[INFO] finished tweaking git repo https://github.com/RedStoneCoin/redstone-rs
[INFO] tweaked toml for git repo https://github.com/RedStoneCoin/redstone-rs written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/RedStoneCoin/redstone-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded vrf v0.2.2
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c81078bc8bec3f1e82e6db363064e1c2919d990b5ae4786203dfc711e88d3de6
[INFO] running `Command { std: "docker" "start" "-a" "c81078bc8bec3f1e82e6db363064e1c2919d990b5ae4786203dfc711e88d3de6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c81078bc8bec3f1e82e6db363064e1c2919d990b5ae4786203dfc711e88d3de6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c81078bc8bec3f1e82e6db363064e1c2919d990b5ae4786203dfc711e88d3de6", kill_on_drop: false }`
[INFO] [stdout] c81078bc8bec3f1e82e6db363064e1c2919d990b5ae4786203dfc711e88d3de6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca5e601a45d0b0955d5b68d69abc2e9faab755251719fb632f54617b09bfff84
[INFO] running `Command { std: "docker" "start" "-a" "ca5e601a45d0b0955d5b68d69abc2e9faab755251719fb632f54617b09bfff84", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling typenum v1.13.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking gimli v0.24.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]     Checking rustc-demangle v0.1.19
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking subtle v2.4.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking bitcoin_hashes v0.9.6
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]     Checking hmac-sha256 v0.1.7
[INFO] [stderr]    Compiling backtrace v0.3.60
[INFO] [stderr]    Compiling secp256k1-sys v0.4.0
[INFO] [stderr]     Checking object v0.25.3
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking crc32fast v1.2.1
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[INFO] [stderr]    Compiling generic-array v0.14.4
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[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling openssl-sys v0.9.63
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking sled v0.34.6
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]    Compiling openssl v0.10.34
[INFO] [stderr]     Checking addr2line v0.15.2
[INFO] [stderr]     Checking crypto-mac v0.8.0
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking blake2 v0.9.1
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]     Checking secp256k1 v0.20.2
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking vrf v0.2.2
[INFO] [stderr]     Checking redstone-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `sled`
[INFO] [stdout]  --> src/blockchain.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use sled;
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::format`
[INFO] [stdout]  --> src/account.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::format;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sled`
[INFO] [stdout]  --> src/blockchain.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use sled;
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::format`
[INFO] [stdout]  --> src/account.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::format;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hash`
[INFO] [stdout]   --> src/block.rs:52:16
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub fn get(hash: String) -> Result<Block, Box<dyn std::error::Error>> {
[INFO] [stdout]    |                ^^^^ help: if this is intentional, prefix it with an underscore: `_hash`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `context`
[INFO] [stdout]   --> src/block.rs:58:23
[INFO] [stdout]    |
[INFO] [stdout] 58 |     fn execute(&self, context: &String) -> Result<String, Box<dyn std::error::Error>> {
[INFO] [stdout]    |                       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_context`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `context`
[INFO] [stdout]    --> src/block.rs:101:20
[INFO] [stdout]     |
[INFO] [stdout] 101 |     fn cost(&self, context: &String) -> u64 {
[INFO] [stdout]     |                    ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_context`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `context`
[INFO] [stdout]   --> src/transaction.rs:85:23
[INFO] [stdout]    |
[INFO] [stdout] 85 |     fn execute(&self, context: &String) -> Result<String, Box<dyn std::error::Error>> {
[INFO] [stdout]    |                       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_context`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `context`
[INFO] [stdout]   --> src/transaction.rs:97:20
[INFO] [stdout]    |
[INFO] [stdout] 97 |     fn cost(&self, context: &String) -> u64 {
[INFO] [stdout]    |                    ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_context`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `context`
[INFO] [stdout]   --> src/contract.rs:32:23
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn execute(&self, context: &String) -> Result<String, Box<dyn std::error::Error>> {
[INFO] [stdout]    |                       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_context`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `context`
[INFO] [stdout]   --> src/contract.rs:43:20
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn cost(&self, context: &String) -> u64 {
[INFO] [stdout]    |                    ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_context`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `block`
[INFO] [stdout]   --> src/validators.rs:10:29
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn choose_next_proposer(block: Block) {
[INFO] [stdout]    |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_block`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hash`
[INFO] [stdout]   --> src/block.rs:52:16
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub fn get(hash: String) -> Result<Block, Box<dyn std::error::Error>> {
[INFO] [stdout]    |                ^^^^ help: if this is intentional, prefix it with an underscore: `_hash`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `context`
[INFO] [stdout]   --> src/block.rs:58:23
[INFO] [stdout]    |
[INFO] [stdout] 58 |     fn execute(&self, context: &String) -> Result<String, Box<dyn std::error::Error>> {
[INFO] [stdout]    |                       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_context`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `context`
[INFO] [stdout]    --> src/block.rs:101:20
[INFO] [stdout]     |
[INFO] [stdout] 101 |     fn cost(&self, context: &String) -> u64 {
[INFO] [stdout]     |                    ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_context`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `context`
[INFO] [stdout]   --> src/transaction.rs:85:23
[INFO] [stdout]    |
[INFO] [stdout] 85 |     fn execute(&self, context: &String) -> Result<String, Box<dyn std::error::Error>> {
[INFO] [stdout]    |                       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_context`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `context`
[INFO] [stdout]   --> src/transaction.rs:97:20
[INFO] [stdout]    |
[INFO] [stdout] 97 |     fn cost(&self, context: &String) -> u64 {
[INFO] [stdout]    |                    ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_context`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `context`
[INFO] [stdout]   --> src/contract.rs:32:23
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn execute(&self, context: &String) -> Result<String, Box<dyn std::error::Error>> {
[INFO] [stdout]    |                       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_context`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `context`
[INFO] [stdout]   --> src/contract.rs:43:20
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn cost(&self, context: &String) -> u64 {
[INFO] [stdout]    |                    ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_context`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `block`
[INFO] [stdout]   --> src/validators.rs:10:29
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn choose_next_proposer(block: Block) {
[INFO] [stdout]    |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_block`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `hash`
[INFO] [stdout]  --> src/contract.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     hash: String,    // the hash of the byte code + account address
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Validator`
[INFO] [stdout]  --> src/validators.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Validator {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `hash`
[INFO] [stdout]  --> src/contract.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     hash: String,    // the hash of the byte code + account address
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Validator`
[INFO] [stdout]  --> src/validators.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Validator {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.95s
[INFO] running `Command { std: "docker" "inspect" "ca5e601a45d0b0955d5b68d69abc2e9faab755251719fb632f54617b09bfff84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca5e601a45d0b0955d5b68d69abc2e9faab755251719fb632f54617b09bfff84", kill_on_drop: false }`
[INFO] [stdout] ca5e601a45d0b0955d5b68d69abc2e9faab755251719fb632f54617b09bfff84