[INFO] cloning repository https://github.com/ihnmalik/online_class_4
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ihnmalik/online_class_4" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fihnmalik%2Fonline_class_4", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fihnmalik%2Fonline_class_4'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] db3aec80a3d4facac389bd461bc6e2f34a1e085f
[INFO] checking ihnmalik/online_class_4 against master#4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5 for pr-81174
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fihnmalik%2Fonline_class_4" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ihnmalik/online_class_4 on toolchain 4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ihnmalik/online_class_4
[INFO] finished tweaking git repo https://github.com/ihnmalik/online_class_4
[INFO] tweaked toml for git repo https://github.com/ihnmalik/online_class_4 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/ihnmalik/online_class_4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 43f3da5eef1a57e203d07e3fbdf7a036b48015589854897aa56ac14b52ae90ec
[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" "43f3da5eef1a57e203d07e3fbdf7a036b48015589854897aa56ac14b52ae90ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "43f3da5eef1a57e203d07e3fbdf7a036b48015589854897aa56ac14b52ae90ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43f3da5eef1a57e203d07e3fbdf7a036b48015589854897aa56ac14b52ae90ec", kill_on_drop: false }`
[INFO] [stdout] 43f3da5eef1a57e203d07e3fbdf7a036b48015589854897aa56ac14b52ae90ec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 013949d9d0d88b2a47cad71987eb612a376e78de20ebf574e4078e9020d3fc39
[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" "013949d9d0d88b2a47cad71987eb612a376e78de20ebf574e4078e9020d3fc39", kill_on_drop: false }`
[INFO] [stderr]     Checking crates_practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]  --> src/new.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 |         let name: String = "hasaan".to_string();
[INFO] [stdout]   |             ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_my_name`
[INFO] [stdout]  --> src/new.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 |     fn print_my_name() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `add_to_waitlist`
[INFO] [stdout]  --> src/restaurant.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 |         pub fn add_to_waitlist() {}
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]  --> src/new.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 |         let name: String = "hasaan".to_string();
[INFO] [stdout]   |             ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_my_name`
[INFO] [stdout]  --> src/new.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 |     fn print_my_name() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `add_to_waitlist`
[INFO] [stdout]  --> src/restaurant.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 |         pub fn add_to_waitlist() {}
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `eat_at_restaurant`
[INFO] [stdout]  --> src/restaurant.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn eat_at_restaurant() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `eat_at_restaurant`
[INFO] [stdout]  --> src/restaurant.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn eat_at_restaurant() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "013949d9d0d88b2a47cad71987eb612a376e78de20ebf574e4078e9020d3fc39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "013949d9d0d88b2a47cad71987eb612a376e78de20ebf574e4078e9020d3fc39", kill_on_drop: false }`
[INFO] [stdout] 013949d9d0d88b2a47cad71987eb612a376e78de20ebf574e4078e9020d3fc39