[INFO] cloning repository https://github.com/harshithkrpt/rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/harshithkrpt/rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fharshithkrpt%2Frust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fharshithkrpt%2Frust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ef0d66f3f2d13bd6e3434b85a7ef0dce72057538
[INFO] checking harshithkrpt/rust against try#3e22d1f9053c0fc87629b3c6d5d9567856368e5d for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fharshithkrpt%2Frust" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/harshithkrpt/rust on toolchain 3e22d1f9053c0fc87629b3c6d5d9567856368e5d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/harshithkrpt/rust
[INFO] finished tweaking git repo https://github.com/harshithkrpt/rust
[INFO] tweaked toml for git repo https://github.com/harshithkrpt/rust written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/harshithkrpt/rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c40b7914b7a914ebcb2a7cee60899b56e48d2068937d88557a97ed222039a0cc
[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" "c40b7914b7a914ebcb2a7cee60899b56e48d2068937d88557a97ed222039a0cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c40b7914b7a914ebcb2a7cee60899b56e48d2068937d88557a97ed222039a0cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c40b7914b7a914ebcb2a7cee60899b56e48d2068937d88557a97ed222039a0cc", kill_on_drop: false }`
[INFO] [stdout] c40b7914b7a914ebcb2a7cee60899b56e48d2068937d88557a97ed222039a0cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c40e38b4c768445f8d8fdd77647f357d22ef42bed5e3935d324a83c82577c532
[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" "c40e38b4c768445f8d8fdd77647f357d22ef42bed5e3935d324a83c82577c532", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_basic v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `age` is never read
[INFO] [stdout]  --> src/vars.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut age = 37;
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]  --> src/types.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let x  = 1;
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]  --> src/types.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let y = 2.5;
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y2`
[INFO] [stdout]  --> src/types.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let y2: i64 = 394632410927;
[INFO] [stdout]   |         ^^ help: if this is intentional, prefix it with an underscore: `_y2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `run`
[INFO] [stdout]  --> src/print.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn run() {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `run`
[INFO] [stdout]  --> src/vars.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn run(){
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `age` is never read
[INFO] [stdout]  --> src/vars.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut age = 37;
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]  --> src/types.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let x  = 1;
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]  --> src/types.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let y = 2.5;
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y2`
[INFO] [stdout]  --> src/types.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let y2: i64 = 394632410927;
[INFO] [stdout]   |         ^^ help: if this is intentional, prefix it with an underscore: `_y2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `run`
[INFO] [stdout]  --> src/print.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn run() {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `run`
[INFO] [stdout]  --> src/vars.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn run(){
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `Command { std: "docker" "inspect" "c40e38b4c768445f8d8fdd77647f357d22ef42bed5e3935d324a83c82577c532", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c40e38b4c768445f8d8fdd77647f357d22ef42bed5e3935d324a83c82577c532", kill_on_drop: false }`
[INFO] [stdout] c40e38b4c768445f8d8fdd77647f357d22ef42bed5e3935d324a83c82577c532