[INFO] cloning repository https://github.com/Abhishek8394/rust-tut-closures
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Abhishek8394/rust-tut-closures" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAbhishek8394%2Frust-tut-closures", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAbhishek8394%2Frust-tut-closures'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3ba5062402616d4cfeb1cc934e9b2f32acb8eda8
[INFO] checking Abhishek8394/rust-tut-closures against master#9b81629631b382fd49ee3a20ac47797b1467e52d for pr-146095
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAbhishek8394%2Frust-tut-closures" "/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/Abhishek8394/rust-tut-closures
[INFO] finished tweaking git repo https://github.com/Abhishek8394/rust-tut-closures
[INFO] tweaked toml for git repo https://github.com/Abhishek8394/rust-tut-closures written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Abhishek8394/rust-tut-closures on toolchain 9b81629631b382fd49ee3a20ac47797b1467e52d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9b81629631b382fd49ee3a20ac47797b1467e52d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Abhishek8394/rust-tut-closures 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" "+9b81629631b382fd49ee3a20ac47797b1467e52d" "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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+9b81629631b382fd49ee3a20ac47797b1467e52d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 40c1c6138a8178348121f9ec19fcc8146848f1bd73ec4ad7f58e4995b8af4619
[INFO] running `Command { std: "docker" "start" "-a" "40c1c6138a8178348121f9ec19fcc8146848f1bd73ec4ad7f58e4995b8af4619", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "40c1c6138a8178348121f9ec19fcc8146848f1bd73ec4ad7f58e4995b8af4619", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40c1c6138a8178348121f9ec19fcc8146848f1bd73ec4ad7f58e4995b8af4619", kill_on_drop: false }`
[INFO] [stdout] 40c1c6138a8178348121f9ec19fcc8146848f1bd73ec4ad7f58e4995b8af4619
[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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+9b81629631b382fd49ee3a20ac47797b1467e52d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 223dda5235fba10a5179e10bdcf74946cdca0e3a1919e3287df960b7e659109f
[INFO] running `Command { std: "docker" "start" "-a" "223dda5235fba10a5179e10bdcf74946cdca0e3a1919e3287df960b7e659109f", kill_on_drop: false }`
[INFO] [stderr]     Checking closures v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `foo`
[INFO] [stdout]    --> src/main.rs:117:9
[INFO] [stdout]     |
[INFO] [stdout] 117 |     let foo = x(String::from("foo"));
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_foo`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `simulated_expensive_calculation` is never used
[INFO] [stdout]   --> src/main.rs:43:4
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn simulated_expensive_calculation(intensity: u32) -> u32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Shoe` is never constructed
[INFO] [stdout]   --> src/main.rs:82:8
[INFO] [stdout]    |
[INFO] [stdout] 82 | struct Shoe{
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Counter` is never constructed
[INFO] [stdout]   --> src/main.rs:87:8
[INFO] [stdout]    |
[INFO] [stdout] 87 | struct Counter{
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/main.rs:92:8
[INFO] [stdout]    |
[INFO] [stdout] 91 | impl Counter{
[INFO] [stdout]    | ------------ associated function in this implementation
[INFO] [stdout] 92 |     fn new() -> Counter{
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `shoes_in_my_size` is never used
[INFO] [stdout]    --> src/main.rs:111:4
[INFO] [stdout]     |
[INFO] [stdout] 111 | fn shoes_in_my_size(shoes: Vec<Shoe>, size: u32) -> Vec<Shoe>{
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `foo`
[INFO] [stdout]    --> src/main.rs:117:9
[INFO] [stdout]     |
[INFO] [stdout] 117 |     let foo = x(String::from("foo"));
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_foo`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v1`
[INFO] [stdout]    --> src/main.rs:143:13
[INFO] [stdout]     |
[INFO] [stdout] 143 |         let v1 = cache.value(4);
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_v1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v1`
[INFO] [stdout]    --> src/main.rs:151:13
[INFO] [stdout]     |
[INFO] [stdout] 151 |         let v1 = cache.value("four");
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_v1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:191:13
[INFO] [stdout]     |
[INFO] [stdout] 191 |         let mut counter = Counter::new();
[INFO] [stdout]     |             ----^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `simulated_expensive_calculation` is never used
[INFO] [stdout]   --> src/main.rs:43:4
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn simulated_expensive_calculation(intensity: u32) -> u32 {
[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 0.25s
[INFO] running `Command { std: "docker" "inspect" "223dda5235fba10a5179e10bdcf74946cdca0e3a1919e3287df960b7e659109f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "223dda5235fba10a5179e10bdcf74946cdca0e3a1919e3287df960b7e659109f", kill_on_drop: false }`
[INFO] [stdout] 223dda5235fba10a5179e10bdcf74946cdca0e3a1919e3287df960b7e659109f
