[INFO] cloning repository https://github.com/DvanXanMalai/calculator-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DvanXanMalai/calculator-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDvanXanMalai%2Fcalculator-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDvanXanMalai%2Fcalculator-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 662e6faf2a946cb65a604c8caa9ae42de8a63e15
[INFO] checking DvanXanMalai/calculator-rust against 98fd715edd3a0a5aa8f2041d7e20a3143b0fc0d3 for pr-160235-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDvanXanMalai%2Fcalculator-rust" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/DvanXanMalai/calculator-rust
[INFO] finished tweaking git repo https://github.com/DvanXanMalai/calculator-rust
[INFO] tweaked toml for git repo https://github.com/DvanXanMalai/calculator-rust written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/DvanXanMalai/calculator-rust on toolchain 98fd715edd3a0a5aa8f2041d7e20a3143b0fc0d3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+98fd715edd3a0a5aa8f2041d7e20a3143b0fc0d3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/DvanXanMalai/calculator-rust 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" "+98fd715edd3a0a5aa8f2041d7e20a3143b0fc0d3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 0411533b7a24aa0fc465a0e8c268b2f2d23e95f41f37d97669e3bddd2fb3c45e
[INFO] running `Command { std: "docker" "start" "0411533b7a24aa0fc465a0e8c268b2f2d23e95f41f37d97669e3bddd2fb3c45e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0411533b7a24aa0fc465a0e8c268b2f2d23e95f41f37d97669e3bddd2fb3c45e", 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" "0411533b7a24aa0fc465a0e8c268b2f2d23e95f41f37d97669e3bddd2fb3c45e" "/opt/rustwide/cargo-home/bin/cargo" "+98fd715edd3a0a5aa8f2041d7e20a3143b0fc0d3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0411533b7a24aa0fc465a0e8c268b2f2d23e95f41f37d97669e3bddd2fb3c45e", 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" "0411533b7a24aa0fc465a0e8c268b2f2d23e95f41f37d97669e3bddd2fb3c45e" "/opt/rustwide/cargo-home/bin/cargo" "+98fd715edd3a0a5aa8f2041d7e20a3143b0fc0d3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking calculator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `expression`
[INFO] [stdout]  --> src/main.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let expression = loop {
[INFO] [stdout]   |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expression`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expression`
[INFO] [stdout]  --> src/main.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let expression = loop {
[INFO] [stdout]   |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expression`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]   --> src/main.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 23 |         for item in parts.iter() {
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]   --> src/main.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 23 |         for item in parts.iter() {
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Token` is never used
[INFO] [stdout]   --> src/main.rs:17:14
[INFO] [stdout]    |
[INFO] [stdout] 17 |         enum Token {
[INFO] [stdout]    |              ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Token` is never used
[INFO] [stdout]   --> src/main.rs:17:14
[INFO] [stdout]    |
[INFO] [stdout] 17 |         enum Token {
[INFO] [stdout]    |              ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] running `Command { std: "docker" "inspect" "0411533b7a24aa0fc465a0e8c268b2f2d23e95f41f37d97669e3bddd2fb3c45e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0411533b7a24aa0fc465a0e8c268b2f2d23e95f41f37d97669e3bddd2fb3c45e", kill_on_drop: false }`
[INFO] [stdout] 0411533b7a24aa0fc465a0e8c268b2f2d23e95f41f37d97669e3bddd2fb3c45e
