[INFO] cloning repository https://github.com/Tanzeel-khan/rust-variables
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Tanzeel-khan/rust-variables" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTanzeel-khan%2Frust-variables", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTanzeel-khan%2Frust-variables'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2e106da2dcd39526713cb4a389a75433feebb39d
[INFO] checking Tanzeel-khan/rust-variables against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTanzeel-khan%2Frust-variables" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Tanzeel-khan/rust-variables on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Tanzeel-khan/rust-variables
[INFO] finished tweaking git repo https://github.com/Tanzeel-khan/rust-variables
[INFO] tweaked toml for git repo https://github.com/Tanzeel-khan/rust-variables written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/Tanzeel-khan/rust-variables already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5efe8b6374a7584b55776c3c8327cfaece8030b818b8333ae30fa1bb550765dd
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5efe8b6374a7584b55776c3c8327cfaece8030b818b8333ae30fa1bb550765dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5efe8b6374a7584b55776c3c8327cfaece8030b818b8333ae30fa1bb550765dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5efe8b6374a7584b55776c3c8327cfaece8030b818b8333ae30fa1bb550765dd", kill_on_drop: false }`
[INFO] [stdout] 5efe8b6374a7584b55776c3c8327cfaece8030b818b8333ae30fa1bb550765dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 44d98c02c165ee28848f6f71f96f3f29554bab9313c95bf76c7c2a9a651ab783
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "44d98c02c165ee28848f6f71f96f3f29554bab9313c95bf76c7c2a9a651ab783", kill_on_drop: false }`
[INFO] [stderr]     Checking variables v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `temperature`
[INFO] [stdout]  --> src/main.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let temperature = 35;
[INFO] [stdout]   |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_temperature`
[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:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut temperature = 5;
[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: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `temperature`
[INFO] [stdout]  --> src/main.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let temperature = 35;
[INFO] [stdout]   |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_temperature`
[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:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut temperature = 5;
[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: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `Command { std: "docker" "inspect" "44d98c02c165ee28848f6f71f96f3f29554bab9313c95bf76c7c2a9a651ab783", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44d98c02c165ee28848f6f71f96f3f29554bab9313c95bf76c7c2a9a651ab783", kill_on_drop: false }`
[INFO] [stdout] 44d98c02c165ee28848f6f71f96f3f29554bab9313c95bf76c7c2a9a651ab783