[INFO] cloning repository https://github.com/AhindraD/rust_state_machine
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AhindraD/rust_state_machine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAhindraD%2Frust_state_machine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAhindraD%2Frust_state_machine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] db681aae00290ffffdd6f434848a6e56aa503a9e
[INFO] checking AhindraD/rust_state_machine against master#36b21637e93b038453924d3c66821089e71d8baa for pr-143164
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAhindraD%2Frust_state_machine" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/AhindraD/rust_state_machine
[INFO] finished tweaking git repo https://github.com/AhindraD/rust_state_machine
[INFO] tweaked toml for git repo https://github.com/AhindraD/rust_state_machine written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/AhindraD/rust_state_machine on toolchain 36b21637e93b038453924d3c66821089e71d8baa
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+36b21637e93b038453924d3c66821089e71d8baa" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/AhindraD/rust_state_machine 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" "+36b21637e93b038453924d3c66821089e71d8baa" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+36b21637e93b038453924d3c66821089e71d8baa" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 84ed757122d39e205c6a9e78493762f4c2c8f54359b22904e0c396a5d5e3c595
[INFO] running `Command { std: "docker" "start" "-a" "84ed757122d39e205c6a9e78493762f4c2c8f54359b22904e0c396a5d5e3c595", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "84ed757122d39e205c6a9e78493762f4c2c8f54359b22904e0c396a5d5e3c595", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84ed757122d39e205c6a9e78493762f4c2c8f54359b22904e0c396a5d5e3c595", kill_on_drop: false }`
[INFO] [stdout] 84ed757122d39e205c6a9e78493762f4c2c8f54359b22904e0c396a5d5e3c595
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+36b21637e93b038453924d3c66821089e71d8baa" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 31e960e8c2fa6346af853d4819e819707af5eb8bec45e537f1d015d7c2cf76cb
[INFO] running `Command { std: "docker" "start" "-a" "31e960e8c2fa6346af853d4819e819707af5eb8bec45e537f1d015d7c2cf76cb", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_state_machine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `pallet`
[INFO] [stdout]  --> src/main.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut pallet: Pallet = balances::Pallet::new();
[INFO] [stdout]   |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_pallet`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/main.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut pallet: Pallet = balances::Pallet::new();
[INFO] [stdout]   |         ----^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `balances` is never read
[INFO] [stdout]  --> src/balances.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct Pallet {
[INFO] [stdout]   |            ------ field in this struct
[INFO] [stdout] 3 |     //a key-val pair storing balance
[INFO] [stdout] 4 |     balances: BTreeMap<String, u128>,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `set_balance` and `get_balance` are never used
[INFO] [stdout]   --> src/balances.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 7  | impl Pallet {
[INFO] [stdout]    | ----------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 15 |     pub fn set_balance(&mut self, who: &String, amount: u128) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub fn get_balance(&self, who: &String) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pallet`
[INFO] [stdout]  --> src/main.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut pallet: Pallet = balances::Pallet::new();
[INFO] [stdout]   |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_pallet`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/main.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut pallet: Pallet = balances::Pallet::new();
[INFO] [stdout]   |         ----^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `balances` is never read
[INFO] [stdout]  --> src/balances.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct Pallet {
[INFO] [stdout]   |            ------ field in this struct
[INFO] [stdout] 3 |     //a key-val pair storing balance
[INFO] [stdout] 4 |     balances: BTreeMap<String, u128>,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `set_balance` and `get_balance` are never used
[INFO] [stdout]   --> src/balances.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 7  | impl Pallet {
[INFO] [stdout]    | ----------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 15 |     pub fn set_balance(&mut self, who: &String, amount: u128) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub fn get_balance(&self, who: &String) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `Command { std: "docker" "inspect" "31e960e8c2fa6346af853d4819e819707af5eb8bec45e537f1d015d7c2cf76cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31e960e8c2fa6346af853d4819e819707af5eb8bec45e537f1d015d7c2cf76cb", kill_on_drop: false }`
[INFO] [stdout] 31e960e8c2fa6346af853d4819e819707af5eb8bec45e537f1d015d7c2cf76cb
