[INFO] cloning repository https://github.com/SyedHzf/data_struct
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SyedHzf/data_struct" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSyedHzf%2Fdata_struct", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSyedHzf%2Fdata_struct'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 68561e3294bd74705448b701baa359cae008cd73
[INFO] checking SyedHzf/data_struct against master#9c3064e131f4939cc95a29bb11413c49bbda1491 for pr-144098
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSyedHzf%2Fdata_struct" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/SyedHzf/data_struct
[INFO] finished tweaking git repo https://github.com/SyedHzf/data_struct
[INFO] tweaked toml for git repo https://github.com/SyedHzf/data_struct written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/SyedHzf/data_struct on toolchain 9c3064e131f4939cc95a29bb11413c49bbda1491
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c3064e131f4939cc95a29bb11413c49bbda1491" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/SyedHzf/data_struct 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" "+9c3064e131f4939cc95a29bb11413c49bbda1491" "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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+9c3064e131f4939cc95a29bb11413c49bbda1491" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2978d937977c56f14eba0c25b3914de9a2bc131373f6e5009cb893005aa5172c
[INFO] running `Command { std: "docker" "start" "-a" "2978d937977c56f14eba0c25b3914de9a2bc131373f6e5009cb893005aa5172c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2978d937977c56f14eba0c25b3914de9a2bc131373f6e5009cb893005aa5172c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2978d937977c56f14eba0c25b3914de9a2bc131373f6e5009cb893005aa5172c", kill_on_drop: false }`
[INFO] [stdout] 2978d937977c56f14eba0c25b3914de9a2bc131373f6e5009cb893005aa5172c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+9c3064e131f4939cc95a29bb11413c49bbda1491" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3e60fd92b3a41c0998da7723974401decbcc163573db3c12feb73f219c969288
[INFO] running `Command { std: "docker" "start" "-a" "3e60fd92b3a41c0998da7723974401decbcc163573db3c12feb73f219c969288", kill_on_drop: false }`
[INFO] [stderr]     Checking Data_Structures v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]  --> src/LinkedList.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Node {
[INFO] [stdout]   |            ---- field in this struct
[INFO] [stdout] 8 |     value: String,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Node` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `deleteFirst` is never used
[INFO] [stdout]   --> src/LinkedList.rs:80:12
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl Linkedlist {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 80 |     pub fn deleteFirst(&mut self) -> Option<String> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `LinkedList` should have a snake case name
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | mod LinkedList;
[INFO] [stdout]   |     ^^^^^^^^^^ help: convert the identifier to snake case: `linked_list`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `inertFirst` should have a snake case name
[INFO] [stdout]   --> src/LinkedList.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn inertFirst(&mut self, value: String) {
[INFO] [stdout]    |            ^^^^^^^^^^ help: convert the identifier to snake case: `inert_first`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `deleteFirst` should have a snake case name
[INFO] [stdout]   --> src/LinkedList.rs:80:12
[INFO] [stdout]    |
[INFO] [stdout] 80 |     pub fn deleteFirst(&mut self) -> Option<String> {
[INFO] [stdout]    |            ^^^^^^^^^^^ help: convert the identifier to snake case: `delete_first`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]  --> src/LinkedList.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Node {
[INFO] [stdout]   |            ---- field in this struct
[INFO] [stdout] 8 |     value: String,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Node` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `deleteFirst` is never used
[INFO] [stdout]   --> src/LinkedList.rs:80:12
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl Linkedlist {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 80 |     pub fn deleteFirst(&mut self) -> Option<String> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `LinkedList` should have a snake case name
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | mod LinkedList;
[INFO] [stdout]   |     ^^^^^^^^^^ help: convert the identifier to snake case: `linked_list`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `inertFirst` should have a snake case name
[INFO] [stdout]   --> src/LinkedList.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn inertFirst(&mut self, value: String) {
[INFO] [stdout]    |            ^^^^^^^^^^ help: convert the identifier to snake case: `inert_first`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `deleteFirst` should have a snake case name
[INFO] [stdout]   --> src/LinkedList.rs:80:12
[INFO] [stdout]    |
[INFO] [stdout] 80 |     pub fn deleteFirst(&mut self) -> Option<String> {
[INFO] [stdout]    |            ^^^^^^^^^^^ help: convert the identifier to snake case: `delete_first`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "3e60fd92b3a41c0998da7723974401decbcc163573db3c12feb73f219c969288", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e60fd92b3a41c0998da7723974401decbcc163573db3c12feb73f219c969288", kill_on_drop: false }`
[INFO] [stdout] 3e60fd92b3a41c0998da7723974401decbcc163573db3c12feb73f219c969288