[INFO] cloning repository https://github.com/raushanranjan/rust_learn_variable_fn_flow
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/raushanranjan/rust_learn_variable_fn_flow" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fraushanranjan%2Frust_learn_variable_fn_flow", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fraushanranjan%2Frust_learn_variable_fn_flow'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 82599399f2a18276d3bb0ede9f83c6050b5802e0
[INFO] checking raushanranjan/rust_learn_variable_fn_flow against try#5de9e0e6cf775e94e0de2003f35e183f3f77bfe8 for pr-143808
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fraushanranjan%2Frust_learn_variable_fn_flow" "/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/raushanranjan/rust_learn_variable_fn_flow
[INFO] finished tweaking git repo https://github.com/raushanranjan/rust_learn_variable_fn_flow
[INFO] tweaked toml for git repo https://github.com/raushanranjan/rust_learn_variable_fn_flow written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/raushanranjan/rust_learn_variable_fn_flow on toolchain 5de9e0e6cf775e94e0de2003f35e183f3f77bfe8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5de9e0e6cf775e94e0de2003f35e183f3f77bfe8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/raushanranjan/rust_learn_variable_fn_flow 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" "+5de9e0e6cf775e94e0de2003f35e183f3f77bfe8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "+5de9e0e6cf775e94e0de2003f35e183f3f77bfe8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 56eb0960702b7dabd2aee46d43271f33b9e7c9e7cd8b284248043ef68ecc581a
[INFO] running `Command { std: "docker" "start" "-a" "56eb0960702b7dabd2aee46d43271f33b9e7c9e7cd8b284248043ef68ecc581a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "56eb0960702b7dabd2aee46d43271f33b9e7c9e7cd8b284248043ef68ecc581a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56eb0960702b7dabd2aee46d43271f33b9e7c9e7cd8b284248043ef68ecc581a", kill_on_drop: false }`
[INFO] [stdout] 56eb0960702b7dabd2aee46d43271f33b9e7c9e7cd8b284248043ef68ecc581a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "+5de9e0e6cf775e94e0de2003f35e183f3f77bfe8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d30e3d0479ec2b3d69081441173f94331fa62eadd9eaab0b715606fea24fac16
[INFO] running `Command { std: "docker" "start" "-a" "d30e3d0479ec2b3d69081441173f94331fa62eadd9eaab0b715606fea24fac16", kill_on_drop: false }`
[INFO] [stderr]     Checking my_variables v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `house`
[INFO] [stdout]   --> src/main.rs:32:10
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let (house, floor) = tup;
[INFO] [stdout]    |          ^^^^^ help: if this is intentional, prefix it with an underscore: `_house`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `floor`
[INFO] [stdout]   --> src/main.rs:32:17
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let (house, floor) = tup;
[INFO] [stdout]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_floor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SUBSCRIBER_COUNT` is never used
[INFO] [stdout]  --> src/main.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 |     const SUBSCRIBER_COUNT: u32 = 100_00; //here we can use _ for better reliablity
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `house`
[INFO] [stdout]   --> src/main.rs:32:10
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let (house, floor) = tup;
[INFO] [stdout]    |          ^^^^^ help: if this is intentional, prefix it with an underscore: `_house`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `floor`
[INFO] [stdout]   --> src/main.rs:32:17
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let (house, floor) = tup;
[INFO] [stdout]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_floor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "d30e3d0479ec2b3d69081441173f94331fa62eadd9eaab0b715606fea24fac16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d30e3d0479ec2b3d69081441173f94331fa62eadd9eaab0b715606fea24fac16", kill_on_drop: false }`
[INFO] [stdout] d30e3d0479ec2b3d69081441173f94331fa62eadd9eaab0b715606fea24fac16