[INFO] cloning repository https://github.com/varun24143/rust_dsa_test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/varun24143/rust_dsa_test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvarun24143%2Frust_dsa_test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvarun24143%2Frust_dsa_test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 531b5900a874c16b690c872b00080cf766cd745a
[INFO] checking varun24143/rust_dsa_test against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvarun24143%2Frust_dsa_test" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/varun24143/rust_dsa_test on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/varun24143/rust_dsa_test
[INFO] finished tweaking git repo https://github.com/varun24143/rust_dsa_test
[INFO] tweaked toml for git repo https://github.com/varun24143/rust_dsa_test written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/varun24143/rust_dsa_test 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8f8f4fd35ed744a4b9dd60a07da6c2aab9469270d0717c3f793c3bef4741c547
[INFO] running `Command { std: "docker" "start" "-a" "8f8f4fd35ed744a4b9dd60a07da6c2aab9469270d0717c3f793c3bef4741c547", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f8f4fd35ed744a4b9dd60a07da6c2aab9469270d0717c3f793c3bef4741c547", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f8f4fd35ed744a4b9dd60a07da6c2aab9469270d0717c3f793c3bef4741c547", kill_on_drop: false }`
[INFO] [stdout] 8f8f4fd35ed744a4b9dd60a07da6c2aab9469270d0717c3f793c3bef4741c547
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1d666aa75d5fcddb6a3e885bb9304257fc30879ca8ecd5573bc2fc57f50716b6
[INFO] running `Command { std: "docker" "start" "-a" "1d666aa75d5fcddb6a3e885bb9304257fc30879ca8ecd5573bc2fc57f50716b6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking rust_dsa v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/memtesting.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/tests.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] help: if this is a test module, consider adding a `#[cfg(test)]` to the containing module
[INFO] [stdout]  --> src/main.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | mod tests;
[INFO] [stdout]   | ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::memtesting::MyStruct`
[INFO] [stdout]   --> src/tests.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | use crate::memtesting::MyStruct;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: if this is a test module, consider adding a `#[cfg(test)]` to the containing module
[INFO] [stdout]   --> src/main.rs:4:1
[INFO] [stdout]    |
[INFO] [stdout] 4  | mod tests;
[INFO] [stdout]    | ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::conmut::*`
[INFO] [stdout]   --> src/tests.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | use crate::conmut::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: if this is a test module, consider adding a `#[cfg(test)]` to the containing module
[INFO] [stdout]   --> src/main.rs:4:1
[INFO] [stdout]    |
[INFO] [stdout] 4  | mod tests;
[INFO] [stdout]    | ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::random`
[INFO] [stdout]   --> src/skiplists.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use rand::random;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::conmut::*`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::conmut::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::transactionlog::*`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use crate::transactionlog::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::tests::*`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::tests::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::skiplists::*`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use crate::skiplists::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/memtesting.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::random`
[INFO] [stdout]   --> src/skiplists.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use rand::random;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::conmut::*`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::conmut::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::transactionlog::*`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use crate::transactionlog::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::tests::*`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::tests::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::skiplists::*`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use crate::skiplists::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Door` is never constructed
[INFO] [stdout]   --> src/main.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct Door {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/main.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Door {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 19 |     fn new(is_open: bool) -> Door {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Openable` is never used
[INFO] [stdout]   --> src/main.rs:26:7
[INFO] [stdout]    |
[INFO] [stdout] 26 | trait Openable {
[INFO] [stdout]    |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `ext` are never read
[INFO] [stdout]   --> src/main.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub struct FileName {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 51 |     name: Rc<String>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 52 |     ext: Rc<String>,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FileName` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Link` is never used
[INFO] [stdout]   --> src/conmut.rs:44:6
[INFO] [stdout]    |
[INFO] [stdout] 44 | type Link = Option<Rc<RefCell<Node>>>;
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]   --> src/conmut.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | struct Node {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add` is never used
[INFO] [stdout]    --> src/conmut.rs:118:8
[INFO] [stdout]     |
[INFO] [stdout] 118 | pub fn add(a: i32, b: i32) -> Result<i32, String> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `a`, `b`, and `c` are never read
[INFO] [stdout]  --> src/memtesting.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct MyStruct {
[INFO] [stdout]   |            -------- fields in this struct
[INFO] [stdout] 4 |     a: u8,
[INFO] [stdout]   |     ^
[INFO] [stdout] 5 |     b: u8,
[INFO] [stdout]   |     ^
[INFO] [stdout] 6 |     c: u8,
[INFO] [stdout]   |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BetterTransactionLog` is never constructed
[INFO] [stdout]   --> src/transactionlog.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct BetterTransactionLog { // Revised as per doubly linked list
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/transactionlog.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl Node {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 27 |     // A nice and short way of creating a new node
[INFO] [stdout] 28 |     pub fn new(value: String) -> Rc<RefCell<Node>> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new_empty`, `append`, and `pop` are never used
[INFO] [stdout]   --> src/transactionlog.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | impl BetterTransactionLog {
[INFO] [stdout]    | ------------------------- associated items in this implementation
[INFO] [stdout] 40 |     pub fn new_empty() -> BetterTransactionLog {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     pub fn append(&mut self, value: String) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 57 |     pub fn pop(&mut self) -> Option<String> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/transactionlog.rs:75:12
[INFO] [stdout]    |
[INFO] [stdout] 74 | impl ListIterator {
[INFO] [stdout]    | ----------------- associated function in this implementation
[INFO] [stdout] 75 |     pub fn new(start_at: SingleLink) -> ListIterator {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add` is never used
[INFO] [stdout]  --> src/tests.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn add(a: i32, b: i32) -> i32 {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Link` is never used
[INFO] [stdout]   --> src/tests.rs:25:6
[INFO] [stdout]    |
[INFO] [stdout] 25 | type Link = Rc<RefCell<Node>>;
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Link` is never used
[INFO] [stdout]   --> src/skiplists.rs:16:10
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub type Link = Option<Rc<RefCell<Node>>>;
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]   --> src/skiplists.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct Node {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Node` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/skiplists.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl Node {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 26 |     fn new(links: Vec<Link>, offset: u64, command: String) -> Rc<RefCell<Node>> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BestTransactionLog` is never constructed
[INFO] [stdout]   --> src/skiplists.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct BestTransactionLog {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BestTransactionLog` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new_empty`, `get_level`, `append`, and `find` are never used
[INFO] [stdout]    --> src/skiplists.rs:55:12
[INFO] [stdout]     |
[INFO] [stdout] 53  | impl BestTransactionLog {
[INFO] [stdout]     | ----------------------- associated items in this implementation
[INFO] [stdout] 54  |
[INFO] [stdout] 55  |     pub fn new_empty(max_level: usize) -> BestTransactionLog {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 64  |     pub fn get_level(&self) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 72  |     pub fn append(&mut self, offset: u64, value: String) {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 101 |     pub fn find(&self, offset: u64) -> Option<String> { 
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `Sanitize` should have a snake case name
[INFO] [stdout]   --> src/conmut.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn Sanitize(s: String) -> String {
[INFO] [stdout]    |        ^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `sanitize`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 29 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Door` is never constructed
[INFO] [stdout]   --> src/main.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct Door {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/main.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Door {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 19 |     fn new(is_open: bool) -> Door {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Openable` is never used
[INFO] [stdout]   --> src/main.rs:26:7
[INFO] [stdout]    |
[INFO] [stdout] 26 | trait Openable {
[INFO] [stdout]    |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `ext` are never read
[INFO] [stdout]   --> src/main.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub struct FileName {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 51 |     name: Rc<String>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 52 |     ext: Rc<String>,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FileName` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Link` is never used
[INFO] [stdout]   --> src/conmut.rs:44:6
[INFO] [stdout]    |
[INFO] [stdout] 44 | type Link = Option<Rc<RefCell<Node>>>;
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]   --> src/conmut.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | struct Node {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add` is never used
[INFO] [stdout]    --> src/conmut.rs:118:8
[INFO] [stdout]     |
[INFO] [stdout] 118 | pub fn add(a: i32, b: i32) -> Result<i32, String> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `a`, `b`, and `c` are never read
[INFO] [stdout]  --> src/memtesting.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct MyStruct {
[INFO] [stdout]   |            -------- fields in this struct
[INFO] [stdout] 4 |     a: u8,
[INFO] [stdout]   |     ^
[INFO] [stdout] 5 |     b: u8,
[INFO] [stdout]   |     ^
[INFO] [stdout] 6 |     c: u8,
[INFO] [stdout]   |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BetterTransactionLog` is never constructed
[INFO] [stdout]   --> src/transactionlog.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct BetterTransactionLog { // Revised as per doubly linked list
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/transactionlog.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl Node {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 27 |     // A nice and short way of creating a new node
[INFO] [stdout] 28 |     pub fn new(value: String) -> Rc<RefCell<Node>> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new_empty`, `append`, and `pop` are never used
[INFO] [stdout]   --> src/transactionlog.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | impl BetterTransactionLog {
[INFO] [stdout]    | ------------------------- associated items in this implementation
[INFO] [stdout] 40 |     pub fn new_empty() -> BetterTransactionLog {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     pub fn append(&mut self, value: String) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 57 |     pub fn pop(&mut self) -> Option<String> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/transactionlog.rs:75:12
[INFO] [stdout]    |
[INFO] [stdout] 74 | impl ListIterator {
[INFO] [stdout]    | ----------------- associated function in this implementation
[INFO] [stdout] 75 |     pub fn new(start_at: SingleLink) -> ListIterator {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Link` is never used
[INFO] [stdout]   --> src/tests.rs:25:6
[INFO] [stdout]    |
[INFO] [stdout] 25 | type Link = Rc<RefCell<Node>>;
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Link` is never used
[INFO] [stdout]   --> src/skiplists.rs:16:10
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub type Link = Option<Rc<RefCell<Node>>>;
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]   --> src/skiplists.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct Node {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Node` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/skiplists.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl Node {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 26 |     fn new(links: Vec<Link>, offset: u64, command: String) -> Rc<RefCell<Node>> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BestTransactionLog` is never constructed
[INFO] [stdout]   --> src/skiplists.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct BestTransactionLog {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BestTransactionLog` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new_empty`, `get_level`, `append`, and `find` are never used
[INFO] [stdout]    --> src/skiplists.rs:55:12
[INFO] [stdout]     |
[INFO] [stdout] 53  | impl BestTransactionLog {
[INFO] [stdout]     | ----------------------- associated items in this implementation
[INFO] [stdout] 54  |
[INFO] [stdout] 55  |     pub fn new_empty(max_level: usize) -> BestTransactionLog {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 64  |     pub fn get_level(&self) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 72  |     pub fn append(&mut self, offset: u64, value: String) {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 101 |     pub fn find(&self, offset: u64) -> Option<String> { 
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `Sanitize` should have a snake case name
[INFO] [stdout]   --> src/conmut.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn Sanitize(s: String) -> String {
[INFO] [stdout]    |        ^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `sanitize`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 25 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `Command { std: "docker" "inspect" "1d666aa75d5fcddb6a3e885bb9304257fc30879ca8ecd5573bc2fc57f50716b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d666aa75d5fcddb6a3e885bb9304257fc30879ca8ecd5573bc2fc57f50716b6", kill_on_drop: false }`
[INFO] [stdout] 1d666aa75d5fcddb6a3e885bb9304257fc30879ca8ecd5573bc2fc57f50716b6
[INFO] checking varun24143/rust_dsa_test against try#f9935d29d867449445ee008640ccca1bf1ae0889+rustflags=-Dtail_expr_drop_order for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvarun24143%2Frust_dsa_test" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/varun24143/rust_dsa_test on toolchain f9935d29d867449445ee008640ccca1bf1ae0889
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/varun24143/rust_dsa_test
[INFO] finished tweaking git repo https://github.com/varun24143/rust_dsa_test
[INFO] tweaked toml for git repo https://github.com/varun24143/rust_dsa_test written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/varun24143/rust_dsa_test 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" "+f9935d29d867449445ee008640ccca1bf1ae0889" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 74b8537a4cdf8d8b0d4309f27cb3cbbc8f019f0d2516d656f5341086365e7189
[INFO] running `Command { std: "docker" "start" "-a" "74b8537a4cdf8d8b0d4309f27cb3cbbc8f019f0d2516d656f5341086365e7189", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "74b8537a4cdf8d8b0d4309f27cb3cbbc8f019f0d2516d656f5341086365e7189", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74b8537a4cdf8d8b0d4309f27cb3cbbc8f019f0d2516d656f5341086365e7189", kill_on_drop: false }`
[INFO] [stdout] 74b8537a4cdf8d8b0d4309f27cb3cbbc8f019f0d2516d656f5341086365e7189
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Dtail_expr_drop_order" "-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1fd49a8c3ba1484d4e486a4a151650048fc8899165898245e89b67fd8dc9a748
[INFO] running `Command { std: "docker" "start" "-a" "1fd49a8c3ba1484d4e486a4a151650048fc8899165898245e89b67fd8dc9a748", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking rust_dsa v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/memtesting.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/tests.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] help: if this is a test module, consider adding a `#[cfg(test)]` to the containing module
[INFO] [stdout]  --> src/main.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | mod tests;
[INFO] [stdout]   | ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::memtesting::MyStruct`
[INFO] [stdout]   --> src/tests.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | use crate::memtesting::MyStruct;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: if this is a test module, consider adding a `#[cfg(test)]` to the containing module
[INFO] [stdout]   --> src/main.rs:4:1
[INFO] [stdout]    |
[INFO] [stdout] 4  | mod tests;
[INFO] [stdout]    | ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::conmut::*`
[INFO] [stdout]   --> src/tests.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | use crate::conmut::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: if this is a test module, consider adding a `#[cfg(test)]` to the containing module
[INFO] [stdout]   --> src/main.rs:4:1
[INFO] [stdout]    |
[INFO] [stdout] 4  | mod tests;
[INFO] [stdout]    | ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::random`
[INFO] [stdout]   --> src/skiplists.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use rand::random;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::conmut::*`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::conmut::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::transactionlog::*`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use crate::transactionlog::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::tests::*`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::tests::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::skiplists::*`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use crate::skiplists::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/memtesting.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::random`
[INFO] [stdout]   --> src/skiplists.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use rand::random;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::conmut::*`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::conmut::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::transactionlog::*`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use crate::transactionlog::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::tests::*`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::tests::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::skiplists::*`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use crate::skiplists::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Door` is never constructed
[INFO] [stdout]   --> src/main.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct Door {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/main.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Door {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 19 |     fn new(is_open: bool) -> Door {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Openable` is never used
[INFO] [stdout]   --> src/main.rs:26:7
[INFO] [stdout]    |
[INFO] [stdout] 26 | trait Openable {
[INFO] [stdout]    |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `ext` are never read
[INFO] [stdout]   --> src/main.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub struct FileName {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 51 |     name: Rc<String>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 52 |     ext: Rc<String>,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FileName` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Link` is never used
[INFO] [stdout]   --> src/conmut.rs:44:6
[INFO] [stdout]    |
[INFO] [stdout] 44 | type Link = Option<Rc<RefCell<Node>>>;
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]   --> src/conmut.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | struct Node {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add` is never used
[INFO] [stdout]    --> src/conmut.rs:118:8
[INFO] [stdout]     |
[INFO] [stdout] 118 | pub fn add(a: i32, b: i32) -> Result<i32, String> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `a`, `b`, and `c` are never read
[INFO] [stdout]  --> src/memtesting.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct MyStruct {
[INFO] [stdout]   |            -------- fields in this struct
[INFO] [stdout] 4 |     a: u8,
[INFO] [stdout]   |     ^
[INFO] [stdout] 5 |     b: u8,
[INFO] [stdout]   |     ^
[INFO] [stdout] 6 |     c: u8,
[INFO] [stdout]   |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BetterTransactionLog` is never constructed
[INFO] [stdout]   --> src/transactionlog.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct BetterTransactionLog { // Revised as per doubly linked list
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/transactionlog.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl Node {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 27 |     // A nice and short way of creating a new node
[INFO] [stdout] 28 |     pub fn new(value: String) -> Rc<RefCell<Node>> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new_empty`, `append`, and `pop` are never used
[INFO] [stdout]   --> src/transactionlog.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | impl BetterTransactionLog {
[INFO] [stdout]    | ------------------------- associated items in this implementation
[INFO] [stdout] 40 |     pub fn new_empty() -> BetterTransactionLog {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     pub fn append(&mut self, value: String) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 57 |     pub fn pop(&mut self) -> Option<String> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/transactionlog.rs:75:12
[INFO] [stdout]    |
[INFO] [stdout] 74 | impl ListIterator {
[INFO] [stdout]    | ----------------- associated function in this implementation
[INFO] [stdout] 75 |     pub fn new(start_at: SingleLink) -> ListIterator {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add` is never used
[INFO] [stdout]  --> src/tests.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn add(a: i32, b: i32) -> i32 {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Link` is never used
[INFO] [stdout]   --> src/tests.rs:25:6
[INFO] [stdout]    |
[INFO] [stdout] 25 | type Link = Rc<RefCell<Node>>;
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Link` is never used
[INFO] [stdout]   --> src/skiplists.rs:16:10
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub type Link = Option<Rc<RefCell<Node>>>;
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]   --> src/skiplists.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct Node {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Node` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/skiplists.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl Node {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 26 |     fn new(links: Vec<Link>, offset: u64, command: String) -> Rc<RefCell<Node>> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BestTransactionLog` is never constructed
[INFO] [stdout]   --> src/skiplists.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct BestTransactionLog {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BestTransactionLog` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new_empty`, `get_level`, `append`, and `find` are never used
[INFO] [stdout]    --> src/skiplists.rs:55:12
[INFO] [stdout]     |
[INFO] [stdout] 53  | impl BestTransactionLog {
[INFO] [stdout]     | ----------------------- associated items in this implementation
[INFO] [stdout] 54  |
[INFO] [stdout] 55  |     pub fn new_empty(max_level: usize) -> BestTransactionLog {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 64  |     pub fn get_level(&self) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 72  |     pub fn append(&mut self, offset: u64, value: String) {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 101 |     pub fn find(&self, offset: u64) -> Option<String> { 
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `Sanitize` should have a snake case name
[INFO] [stdout]   --> src/conmut.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn Sanitize(s: String) -> String {
[INFO] [stdout]    |        ^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `sanitize`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> src/conmut.rs:82:23
[INFO] [stdout]    |
[INFO] [stdout] 81 |           let _tx = tx.clone();
[INFO] [stdout]    |               --- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 82 |           thread::spawn(move || {
[INFO] [stdout]    |  _______________________^
[INFO] [stdout] 83 | |             // don't use the result
[INFO] [stdout] 84 | |             let _ = _tx.send(i).unwrap();
[INFO] [stdout] 85 | |         })
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout]    = note: requested on the command line with `-D tail-expr-drop-order`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/conmut.rs:100:23
[INFO] [stdout]     |
[INFO] [stdout] 99  |           let numbers = Arc::clone(&v);
[INFO] [stdout]     |               ------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 100 |           thread::spawn(move || {
[INFO] [stdout]     |  _______________________^
[INFO] [stdout] 101 | |             let mut vector = numbers.lock().unwrap();
[INFO] [stdout] 102 | |             (*vector).push(i);
[INFO] [stdout] 103 | |         })
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 29 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Door` is never constructed
[INFO] [stdout]   --> src/main.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct Door {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/main.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Door {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 19 |     fn new(is_open: bool) -> Door {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Openable` is never used
[INFO] [stdout]   --> src/main.rs:26:7
[INFO] [stdout]    |
[INFO] [stdout] 26 | trait Openable {
[INFO] [stdout]    |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `ext` are never read
[INFO] [stdout]   --> src/main.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub struct FileName {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 51 |     name: Rc<String>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 52 |     ext: Rc<String>,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FileName` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Link` is never used
[INFO] [stdout]   --> src/conmut.rs:44:6
[INFO] [stdout]    |
[INFO] [stdout] 44 | type Link = Option<Rc<RefCell<Node>>>;
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]   --> src/conmut.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | struct Node {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add` is never used
[INFO] [stdout]    --> src/conmut.rs:118:8
[INFO] [stdout]     |
[INFO] [stdout] 118 | pub fn add(a: i32, b: i32) -> Result<i32, String> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `a`, `b`, and `c` are never read
[INFO] [stdout]  --> src/memtesting.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct MyStruct {
[INFO] [stdout]   |            -------- fields in this struct
[INFO] [stdout] 4 |     a: u8,
[INFO] [stdout]   |     ^
[INFO] [stdout] 5 |     b: u8,
[INFO] [stdout]   |     ^
[INFO] [stdout] 6 |     c: u8,
[INFO] [stdout]   |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BetterTransactionLog` is never constructed
[INFO] [stdout]   --> src/transactionlog.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct BetterTransactionLog { // Revised as per doubly linked list
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/transactionlog.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl Node {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 27 |     // A nice and short way of creating a new node
[INFO] [stdout] 28 |     pub fn new(value: String) -> Rc<RefCell<Node>> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new_empty`, `append`, and `pop` are never used
[INFO] [stdout]   --> src/transactionlog.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | impl BetterTransactionLog {
[INFO] [stdout]    | ------------------------- associated items in this implementation
[INFO] [stdout] 40 |     pub fn new_empty() -> BetterTransactionLog {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     pub fn append(&mut self, value: String) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 57 |     pub fn pop(&mut self) -> Option<String> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/transactionlog.rs:75:12
[INFO] [stdout]    |
[INFO] [stdout] 74 | impl ListIterator {
[INFO] [stdout]    | ----------------- associated function in this implementation
[INFO] [stdout] 75 |     pub fn new(start_at: SingleLink) -> ListIterator {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Link` is never used
[INFO] [stdout]   --> src/tests.rs:25:6
[INFO] [stdout]    |
[INFO] [stdout] 25 | type Link = Rc<RefCell<Node>>;
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Link` is never used
[INFO] [stdout]   --> src/skiplists.rs:16:10
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub type Link = Option<Rc<RefCell<Node>>>;
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]   --> src/skiplists.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct Node {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Node` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/skiplists.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl Node {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 26 |     fn new(links: Vec<Link>, offset: u64, command: String) -> Rc<RefCell<Node>> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BestTransactionLog` is never constructed
[INFO] [stdout]   --> src/skiplists.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct BestTransactionLog {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BestTransactionLog` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new_empty`, `get_level`, `append`, and `find` are never used
[INFO] [stdout]    --> src/skiplists.rs:55:12
[INFO] [stdout]     |
[INFO] [stdout] 53  | impl BestTransactionLog {
[INFO] [stdout]     | ----------------------- associated items in this implementation
[INFO] [stdout] 54  |
[INFO] [stdout] 55  |     pub fn new_empty(max_level: usize) -> BestTransactionLog {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 64  |     pub fn get_level(&self) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 72  |     pub fn append(&mut self, offset: u64, value: String) {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 101 |     pub fn find(&self, offset: u64) -> Option<String> { 
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `Sanitize` should have a snake case name
[INFO] [stdout]   --> src/conmut.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn Sanitize(s: String) -> String {
[INFO] [stdout]    |        ^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `sanitize`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> src/conmut.rs:82:23
[INFO] [stdout]    |
[INFO] [stdout] 81 |           let _tx = tx.clone();
[INFO] [stdout]    |               --- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 82 |           thread::spawn(move || {
[INFO] [stdout]    |  _______________________^
[INFO] [stdout] 83 | |             // don't use the result
[INFO] [stdout] 84 | |             let _ = _tx.send(i).unwrap();
[INFO] [stdout] 85 | |         })
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout]    = note: requested on the command line with `-D tail-expr-drop-order`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/conmut.rs:100:23
[INFO] [stdout]     |
[INFO] [stdout] 99  |           let numbers = Arc::clone(&v);
[INFO] [stdout]     |               ------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 100 |           thread::spawn(move || {
[INFO] [stdout]     |  _______________________^
[INFO] [stdout] 101 | |             let mut vector = numbers.lock().unwrap();
[INFO] [stdout] 102 | |             (*vector).push(i);
[INFO] [stdout] 103 | |         })
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_dsa` (bin "rust_dsa") due to 3 previous errors; 29 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 2 previous errors; 25 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_dsa` (bin "rust_dsa" test) due to 3 previous errors; 25 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "1fd49a8c3ba1484d4e486a4a151650048fc8899165898245e89b67fd8dc9a748", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fd49a8c3ba1484d4e486a4a151650048fc8899165898245e89b67fd8dc9a748", kill_on_drop: false }`
[INFO] [stdout] 1fd49a8c3ba1484d4e486a4a151650048fc8899165898245e89b67fd8dc9a748