[INFO] cloning repository https://github.com/CECILIA-MULANDI/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/CECILIA-MULANDI/rust_state_machine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCECILIA-MULANDI%2Frust_state_machine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCECILIA-MULANDI%2Frust_state_machine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1599242e47421130a63339471c6fb2d87dd14af6
[INFO] checking CECILIA-MULANDI/rust_state_machine against 895980e0290783bb09b1ccf1b11f14eb09b10430 for pr-160186
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCECILIA-MULANDI%2Frust_state_machine" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/CECILIA-MULANDI/rust_state_machine
[INFO] finished tweaking git repo https://github.com/CECILIA-MULANDI/rust_state_machine
[INFO] tweaked toml for git repo https://github.com/CECILIA-MULANDI/rust_state_machine written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/CECILIA-MULANDI/rust_state_machine on toolchain 895980e0290783bb09b1ccf1b11f14eb09b10430
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+895980e0290783bb09b1ccf1b11f14eb09b10430" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/CECILIA-MULANDI/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" "+895980e0290783bb09b1ccf1b11f14eb09b10430" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 2f53b6588eccc2f0b1425d4a812019b42372dc30ca25fb16da02df602d74749b
[INFO] running `Command { std: "docker" "start" "2f53b6588eccc2f0b1425d4a812019b42372dc30ca25fb16da02df602d74749b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2f53b6588eccc2f0b1425d4a812019b42372dc30ca25fb16da02df602d74749b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "2f53b6588eccc2f0b1425d4a812019b42372dc30ca25fb16da02df602d74749b" "/opt/rustwide/cargo-home/bin/cargo" "+895980e0290783bb09b1ccf1b11f14eb09b10430" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2f53b6588eccc2f0b1425d4a812019b42372dc30ca25fb16da02df602d74749b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "2f53b6588eccc2f0b1425d4a812019b42372dc30ca25fb16da02df602d74749b" "/opt/rustwide/cargo-home/bin/cargo" "+895980e0290783bb09b1ccf1b11f14eb09b10430" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]     Checking num-iter v0.1.45
[INFO] [stderr]     Checking num-rational v0.4.2
[INFO] [stderr]     Checking num v0.4.3
[INFO] [stderr]    Compiling macros v0.1.0 (/opt/rustwide/workdir/macros)
[INFO] [stderr]     Checking my_rust_state_machine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `alice_nonce`
[INFO] [stdout]   --> src/system.rs:42:7
[INFO] [stdout]    |
[INFO] [stdout] 42 |         let alice_nonce = system.inc_nonce(&"alice".to_string());
[INFO] [stdout]    |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_alice_nonce`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TestConfig` is never constructed
[INFO] [stdout]   --> src/system.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     struct TestConfig;
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `init_system` is never used
[INFO] [stdout]   --> src/system.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn init_system() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.87s
[INFO] running `Command { std: "docker" "inspect" "2f53b6588eccc2f0b1425d4a812019b42372dc30ca25fb16da02df602d74749b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f53b6588eccc2f0b1425d4a812019b42372dc30ca25fb16da02df602d74749b", kill_on_drop: false }`
[INFO] [stdout] 2f53b6588eccc2f0b1425d4a812019b42372dc30ca25fb16da02df602d74749b