[INFO] cloning repository https://github.com/anish-sinha1/symmetric-concurrent-btree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/anish-sinha1/symmetric-concurrent-btree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanish-sinha1%2Fsymmetric-concurrent-btree", kill_on_drop: false }`
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[INFO] [stdout] e46f0250eadc847ac60e8c9f1033956e14d74f55
[INFO] checking anish-sinha1/symmetric-concurrent-btree against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanish-sinha1%2Fsymmetric-concurrent-btree" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
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[INFO] validating manifest of git repo https://github.com/anish-sinha1/symmetric-concurrent-btree on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/anish-sinha1/symmetric-concurrent-btree
[INFO] finished tweaking git repo https://github.com/anish-sinha1/symmetric-concurrent-btree
[INFO] tweaked toml for git repo https://github.com/anish-sinha1/symmetric-concurrent-btree written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/anish-sinha1/symmetric-concurrent-btree already has a lockfile, it will not be regenerated
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[INFO] [stdout] warning: unused imports: `Block`, `INDEX_PATH`
[INFO] [stdout]  --> src/traits/encode.rs:4:21
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::common::{Block, INDEX_PATH};
[INFO] [stdout]   |                     ^^^^^  ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::ioutil::fs`
[INFO] [stdout]  --> src/traits/encode.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::ioutil::fs;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Display`, `Formatter`
[INFO] [stdout]  --> src/access/node.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::{Display, Formatter};
[INFO] [stdout]   |                ^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Block`, `INDEX_PATH`
[INFO] [stdout]  --> src/access/ops.rs:6:21
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::common::{INDEX_PATH, Block};
[INFO] [stdout]   |                     ^^^^^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Block`, `INDEX_PATH`
[INFO] [stdout]  --> src/traits/encode.rs:4:21
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::common::{Block, INDEX_PATH};
[INFO] [stdout]   |                     ^^^^^  ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::ioutil::fs`
[INFO] [stdout]  --> src/traits/encode.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::ioutil::fs;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Display`, `Formatter`
[INFO] [stdout]  --> src/access/node.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::{Display, Formatter};
[INFO] [stdout]   |                ^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Block`, `INDEX_PATH`
[INFO] [stdout]  --> src/access/ops.rs:6:21
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::common::{INDEX_PATH, Block};
[INFO] [stdout]   |                     ^^^^^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `table`
[INFO] [stdout]   --> src/access/ops.rs:37:15
[INFO] [stdout]    |
[INFO] [stdout] 37 |     if let Ok(table) = GLOBAL_PAGE_TABLE.read() {
[INFO] [stdout]    |               ^^^^^ help: if this is intentional, prefix it with an underscore: `_table`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]   --> src/access/ops.rs:61:15
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn move_right(val: usize, ptr: ObjectPtr, ubleftsep: f64, lock_type: LwLockType) {
[INFO] [stdout]    |               ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `table`
[INFO] [stdout]   --> src/access/ops.rs:37:15
[INFO] [stdout]    |
[INFO] [stdout] 37 |     if let Ok(table) = GLOBAL_PAGE_TABLE.read() {
[INFO] [stdout]    |               ^^^^^ help: if this is intentional, prefix it with an underscore: `_table`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ptr`
[INFO] [stdout]   --> src/access/ops.rs:61:27
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn move_right(val: usize, ptr: ObjectPtr, ubleftsep: f64, lock_type: LwLockType) {
[INFO] [stdout]    |                           ^^^ help: if this is intentional, prefix it with an underscore: `_ptr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ubleftsep`
[INFO] [stdout]   --> src/access/ops.rs:61:43
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn move_right(val: usize, ptr: ObjectPtr, ubleftsep: f64, lock_type: LwLockType) {
[INFO] [stdout]    |                                           ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ubleftsep`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fast_ptr`
[INFO] [stdout]   --> src/access/ops.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |     let fast_ptr = anchor.fast;
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_fast_ptr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ubleftsep`
[INFO] [stdout]   --> src/access/ops.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |     let ubleftsep = f64::NEG_INFINITY;
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ubleftsep`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `descent`
[INFO] [stdout]   --> src/access/ops.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let descent: Vec<usize> = vec![];
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_descent`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/access/ops.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 74 |     for i in (1..enter_height).rev() {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]   --> src/access/ops.rs:65:16
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn locate_leaf(val: usize, last_lock: LwLockType) {
[INFO] [stdout]    |                ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `last_lock`
[INFO] [stdout]   --> src/access/ops.rs:65:28
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn locate_leaf(val: usize, last_lock: LwLockType) {
[INFO] [stdout]    |                            ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_last_lock`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]   --> src/access/ops.rs:61:15
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn move_right(val: usize, ptr: ObjectPtr, ubleftsep: f64, lock_type: LwLockType) {
[INFO] [stdout]    |               ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ptr`
[INFO] [stdout]   --> src/access/ops.rs:61:27
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn move_right(val: usize, ptr: ObjectPtr, ubleftsep: f64, lock_type: LwLockType) {
[INFO] [stdout]    |                           ^^^ help: if this is intentional, prefix it with an underscore: `_ptr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ubleftsep`
[INFO] [stdout]   --> src/access/ops.rs:61:43
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn move_right(val: usize, ptr: ObjectPtr, ubleftsep: f64, lock_type: LwLockType) {
[INFO] [stdout]    |                                           ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ubleftsep`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fast_ptr`
[INFO] [stdout]   --> src/access/ops.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |     let fast_ptr = anchor.fast;
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_fast_ptr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ubleftsep`
[INFO] [stdout]   --> src/access/ops.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |     let ubleftsep = f64::NEG_INFINITY;
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ubleftsep`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `descent`
[INFO] [stdout]   --> src/access/ops.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let descent: Vec<usize> = vec![];
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_descent`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/access/ops.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 74 |     for i in (1..enter_height).rev() {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]   --> src/access/ops.rs:65:16
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn locate_leaf(val: usize, last_lock: LwLockType) {
[INFO] [stdout]    |                ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `last_lock`
[INFO] [stdout]   --> src/access/ops.rs:65:28
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn locate_leaf(val: usize, last_lock: LwLockType) {
[INFO] [stdout]    |                            ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_last_lock`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file`
[INFO] [stdout]   --> src/ioutil/fs.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let file = std::fs::OpenOptions::new()
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file`
[INFO] [stdout]   --> src/ioutil/fs.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let file = std::fs::OpenOptions::new()
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `encode` is never used
[INFO] [stdout]  --> src/traits/encode.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub trait Encode {
[INFO] [stdout]   |           ------ method in this trait
[INFO] [stdout] 8 |     fn encode(&self) -> Option<Vec<u8>>
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `read` and `from_block` are never used
[INFO] [stdout]   --> src/access/node.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl Node {
[INFO] [stdout]    | --------- associated functions in this implementation
[INFO] [stdout] 25 |     pub fn read(page_no: usize) -> Block {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     pub fn from_block(buf: Block) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_anchor` is never used
[INFO] [stdout]   --> src/access/ops.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn get_anchor() -> Option<BufferPoolFrame> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `encode` is never used
[INFO] [stdout]  --> src/traits/encode.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub trait Encode {
[INFO] [stdout]   |           ------ method in this trait
[INFO] [stdout] 8 |     fn encode(&self) -> Option<Vec<u8>>
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_node` is never used
[INFO] [stdout]   --> src/access/ops.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn get_node(ptr: ObjectPtr) -> Option<BufferPoolFrame> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `read` and `from_block` are never used
[INFO] [stdout]   --> src/access/node.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl Node {
[INFO] [stdout]    | --------- associated functions in this implementation
[INFO] [stdout] 25 |     pub fn read(page_no: usize) -> Block {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     pub fn from_block(buf: Block) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `move_right` is never used
[INFO] [stdout]   --> src/access/ops.rs:61:4
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn move_right(val: usize, ptr: ObjectPtr, ubleftsep: f64, lock_type: LwLockType) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `locate_leaf` is never used
[INFO] [stdout]   --> src/access/ops.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn locate_leaf(val: usize, last_lock: LwLockType) {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_anchor` is never used
[INFO] [stdout]   --> src/access/ops.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn get_anchor() -> Option<BufferPoolFrame> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `normalize` is never used
[INFO] [stdout]   --> src/access/ops.rs:80:4
[INFO] [stdout]    |
[INFO] [stdout] 80 | fn normalize() {}
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_node` is never used
[INFO] [stdout]   --> src/access/ops.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn get_node(ptr: ObjectPtr) -> Option<BufferPoolFrame> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `insert` is never used
[INFO] [stdout]   --> src/access/ops.rs:82:8
[INFO] [stdout]    |
[INFO] [stdout] 82 | pub fn insert() {}
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `delete` is never used
[INFO] [stdout]   --> src/access/ops.rs:84:8
[INFO] [stdout]    |
[INFO] [stdout] 84 | pub fn delete() {}
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `move_right` is never used
[INFO] [stdout]   --> src/access/ops.rs:61:4
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn move_right(val: usize, ptr: ObjectPtr, ubleftsep: f64, lock_type: LwLockType) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `locate_leaf` is never used
[INFO] [stdout]   --> src/access/ops.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn locate_leaf(val: usize, last_lock: LwLockType) {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `normalize` is never used
[INFO] [stdout]   --> src/access/ops.rs:80:4
[INFO] [stdout]    |
[INFO] [stdout] 80 | fn normalize() {}
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `search` is never used
[INFO] [stdout]   --> src/access/ops.rs:86:8
[INFO] [stdout]    |
[INFO] [stdout] 86 | pub fn search() {}
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `write_bytes` is never used
[INFO] [stdout]  --> src/ioutil/fs.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn write_bytes(abs_path: &str, bytes: [u8; 512], offset: u64) -> Option<usize> {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `insert` is never used
[INFO] [stdout]   --> src/access/ops.rs:82:8
[INFO] [stdout]    |
[INFO] [stdout] 82 | pub fn insert() {}
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `delete` is never used
[INFO] [stdout]   --> src/access/ops.rs:84:8
[INFO] [stdout]    |
[INFO] [stdout] 84 | pub fn delete() {}
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `truncate` is never used
[INFO] [stdout]   --> src/ioutil/fs.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn truncate(abs_path: &str) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `search` is never used
[INFO] [stdout]   --> src/access/ops.rs:86:8
[INFO] [stdout]    |
[INFO] [stdout] 86 | pub fn search() {}
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `block_held` is never read
[INFO] [stdout]   --> src/storage/bufmgr.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct BufferPoolFrame {
[INFO] [stdout]    |            --------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub block_held: Block,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BufferPoolFrame` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `write_bytes` is never used
[INFO] [stdout]  --> src/ioutil/fs.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn write_bytes(abs_path: &str, bytes: [u8; 512], offset: u64) -> Option<usize> {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/storage/bufmgr.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl BufferPoolFrame {
[INFO] [stdout]    | -------------------- associated function in this implementation
[INFO] [stdout] 27 |     pub fn new(page_no: usize, block: Block) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `truncate` is never used
[INFO] [stdout]   --> src/ioutil/fs.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn truncate(abs_path: &str) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fetch_frame` is never used
[INFO] [stdout]   --> src/storage/bufmgr.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn fetch_frame(page_no: usize) -> Option<BufferPoolFrame> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `block_held` is never read
[INFO] [stdout]   --> src/storage/bufmgr.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct BufferPoolFrame {
[INFO] [stdout]    |            --------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub block_held: Block,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BufferPoolFrame` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `FrameResult` is never used
[INFO] [stdout]   --> src/storage/bufmgr.rs:60:10
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub type FrameResult = Result<usize, String>;
[INFO] [stdout]    |          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_frame` is never used
[INFO] [stdout]   --> src/storage/bufmgr.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn add_frame(block_no: usize, block: Block) -> FrameResult {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `drop_frame` is never used
[INFO] [stdout]   --> src/storage/bufmgr.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub fn drop_frame(block_no: usize) -> FrameResult {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/storage/bufmgr.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl BufferPoolFrame {
[INFO] [stdout]    | -------------------- associated function in this implementation
[INFO] [stdout] 27 |     pub fn new(page_no: usize, block: Block) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fetch_frame` is never used
[INFO] [stdout]   --> src/storage/bufmgr.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn fetch_frame(page_no: usize) -> Option<BufferPoolFrame> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `FrameResult` is never used
[INFO] [stdout]   --> src/storage/bufmgr.rs:60:10
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub type FrameResult = Result<usize, String>;
[INFO] [stdout]    |          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_frame` is never used
[INFO] [stdout]   --> src/storage/bufmgr.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn add_frame(block_no: usize, block: Block) -> FrameResult {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `drop_frame` is never used
[INFO] [stdout]   --> src/storage/bufmgr.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub fn drop_frame(block_no: usize) -> FrameResult {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 33 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 33 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.21s
[INFO] running `Command { std: "docker" "inspect" "6f5555ef259004096d485963c50726a4a3382515865ffc1d92b12c5ce2c470c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f5555ef259004096d485963c50726a4a3382515865ffc1d92b12c5ce2c470c1", kill_on_drop: false }`
[INFO] [stdout] 6f5555ef259004096d485963c50726a4a3382515865ffc1d92b12c5ce2c470c1
[INFO] checking anish-sinha1/symmetric-concurrent-btree against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanish-sinha1%2Fsymmetric-concurrent-btree" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/anish-sinha1/symmetric-concurrent-btree on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/anish-sinha1/symmetric-concurrent-btree
[INFO] finished tweaking git repo https://github.com/anish-sinha1/symmetric-concurrent-btree
[INFO] tweaked toml for git repo https://github.com/anish-sinha1/symmetric-concurrent-btree written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/anish-sinha1/symmetric-concurrent-btree 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 77b277c21bf94d1b0757b4cae4dc10e4fd675fe0a9949d6a28788241b90dcb89
[INFO] running `Command { std: "docker" "start" "-a" "77b277c21bf94d1b0757b4cae4dc10e4fd675fe0a9949d6a28788241b90dcb89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "77b277c21bf94d1b0757b4cae4dc10e4fd675fe0a9949d6a28788241b90dcb89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77b277c21bf94d1b0757b4cae4dc10e4fd675fe0a9949d6a28788241b90dcb89", kill_on_drop: false }`
[INFO] [stdout] 77b277c21bf94d1b0757b4cae4dc10e4fd675fe0a9949d6a28788241b90dcb89
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8b03e59db09310f652c7d9ae17f82272e619f7f32993f2356c2e3af872e55601
[INFO] running `Command { std: "docker" "start" "-a" "8b03e59db09310f652c7d9ae17f82272e619f7f32993f2356c2e3af872e55601", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling unicode-ident v1.0.4
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]    Compiling crossbeam-utils v0.8.11
[INFO] [stderr]     Checking once_cell v1.14.0
[INFO] [stderr]    Compiling serde_derive v1.0.144
[INFO] [stderr]    Compiling serde v1.0.144
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.10
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking either v1.8.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking bytes v1.2.1
[INFO] [stderr]     Checking itertools v0.10.4
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]     Checking crossbeam-deque v0.8.2
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking positioned-io v0.3.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling darling_core v0.14.1
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling darling_macro v0.14.1
[INFO] [stderr]    Compiling darling v0.14.1
[INFO] [stderr]    Compiling serde_with_macros v2.0.1
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking serde_with v2.0.1
[INFO] [stderr]     Checking serde_bytes v0.11.7
[INFO] [stderr]     Checking lanin-shasha v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Block`, `INDEX_PATH`
[INFO] [stdout]  --> src/traits/encode.rs:4:21
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::common::{Block, INDEX_PATH};
[INFO] [stdout]   |                     ^^^^^  ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::ioutil::fs`
[INFO] [stdout]  --> src/traits/encode.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::ioutil::fs;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Display`, `Formatter`
[INFO] [stdout]  --> src/access/node.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::{Display, Formatter};
[INFO] [stdout]   |                ^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Block`, `INDEX_PATH`
[INFO] [stdout]  --> src/access/ops.rs:6:21
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::common::{INDEX_PATH, Block};
[INFO] [stdout]   |                     ^^^^^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Block`, `INDEX_PATH`
[INFO] [stdout]  --> src/traits/encode.rs:4:21
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::common::{Block, INDEX_PATH};
[INFO] [stdout]   |                     ^^^^^  ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::ioutil::fs`
[INFO] [stdout]  --> src/traits/encode.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::ioutil::fs;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Display`, `Formatter`
[INFO] [stdout]  --> src/access/node.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::{Display, Formatter};
[INFO] [stdout]   |                ^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Block`, `INDEX_PATH`
[INFO] [stdout]  --> src/access/ops.rs:6:21
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::common::{INDEX_PATH, Block};
[INFO] [stdout]   |                     ^^^^^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `table`
[INFO] [stdout]   --> src/access/ops.rs:37:15
[INFO] [stdout]    |
[INFO] [stdout] 37 |     if let Ok(table) = GLOBAL_PAGE_TABLE.read() {
[INFO] [stdout]    |               ^^^^^ help: if this is intentional, prefix it with an underscore: `_table`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]   --> src/access/ops.rs:61:15
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn move_right(val: usize, ptr: ObjectPtr, ubleftsep: f64, lock_type: LwLockType) {
[INFO] [stdout]    |               ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ptr`
[INFO] [stdout]   --> src/access/ops.rs:61:27
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn move_right(val: usize, ptr: ObjectPtr, ubleftsep: f64, lock_type: LwLockType) {
[INFO] [stdout]    |                           ^^^ help: if this is intentional, prefix it with an underscore: `_ptr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ubleftsep`
[INFO] [stdout]   --> src/access/ops.rs:61:43
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn move_right(val: usize, ptr: ObjectPtr, ubleftsep: f64, lock_type: LwLockType) {
[INFO] [stdout]    |                                           ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ubleftsep`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fast_ptr`
[INFO] [stdout]   --> src/access/ops.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |     let fast_ptr = anchor.fast;
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_fast_ptr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ubleftsep`
[INFO] [stdout]   --> src/access/ops.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |     let ubleftsep = f64::NEG_INFINITY;
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ubleftsep`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `descent`
[INFO] [stdout]   --> src/access/ops.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let descent: Vec<usize> = vec![];
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_descent`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/access/ops.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 74 |     for i in (1..enter_height).rev() {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]   --> src/access/ops.rs:65:16
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn locate_leaf(val: usize, last_lock: LwLockType) {
[INFO] [stdout]    |                ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `last_lock`
[INFO] [stdout]   --> src/access/ops.rs:65:28
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn locate_leaf(val: usize, last_lock: LwLockType) {
[INFO] [stdout]    |                            ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_last_lock`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file`
[INFO] [stdout]   --> src/ioutil/fs.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let file = std::fs::OpenOptions::new()
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `encode` is never used
[INFO] [stdout]  --> src/traits/encode.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub trait Encode {
[INFO] [stdout]   |           ------ method in this trait
[INFO] [stdout] 8 |     fn encode(&self) -> Option<Vec<u8>>
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `read` and `from_block` are never used
[INFO] [stdout]   --> src/access/node.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl Node {
[INFO] [stdout]    | --------- associated functions in this implementation
[INFO] [stdout] 25 |     pub fn read(page_no: usize) -> Block {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     pub fn from_block(buf: Block) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_anchor` is never used
[INFO] [stdout]   --> src/access/ops.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn get_anchor() -> Option<BufferPoolFrame> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_node` is never used
[INFO] [stdout]   --> src/access/ops.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn get_node(ptr: ObjectPtr) -> Option<BufferPoolFrame> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `move_right` is never used
[INFO] [stdout]   --> src/access/ops.rs:61:4
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn move_right(val: usize, ptr: ObjectPtr, ubleftsep: f64, lock_type: LwLockType) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `locate_leaf` is never used
[INFO] [stdout]   --> src/access/ops.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn locate_leaf(val: usize, last_lock: LwLockType) {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `normalize` is never used
[INFO] [stdout]   --> src/access/ops.rs:80:4
[INFO] [stdout]    |
[INFO] [stdout] 80 | fn normalize() {}
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `insert` is never used
[INFO] [stdout]   --> src/access/ops.rs:82:8
[INFO] [stdout]    |
[INFO] [stdout] 82 | pub fn insert() {}
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `delete` is never used
[INFO] [stdout]   --> src/access/ops.rs:84:8
[INFO] [stdout]    |
[INFO] [stdout] 84 | pub fn delete() {}
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `search` is never used
[INFO] [stdout]   --> src/access/ops.rs:86:8
[INFO] [stdout]    |
[INFO] [stdout] 86 | pub fn search() {}
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `write_bytes` is never used
[INFO] [stdout]  --> src/ioutil/fs.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn write_bytes(abs_path: &str, bytes: [u8; 512], offset: u64) -> Option<usize> {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `truncate` is never used
[INFO] [stdout]   --> src/ioutil/fs.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn truncate(abs_path: &str) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `block_held` is never read
[INFO] [stdout]   --> src/storage/bufmgr.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct BufferPoolFrame {
[INFO] [stdout]    |            --------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub block_held: Block,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BufferPoolFrame` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/storage/bufmgr.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl BufferPoolFrame {
[INFO] [stdout]    | -------------------- associated function in this implementation
[INFO] [stdout] 27 |     pub fn new(page_no: usize, block: Block) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fetch_frame` is never used
[INFO] [stdout]   --> src/storage/bufmgr.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn fetch_frame(page_no: usize) -> Option<BufferPoolFrame> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `FrameResult` is never used
[INFO] [stdout]   --> src/storage/bufmgr.rs:60:10
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub type FrameResult = Result<usize, String>;
[INFO] [stdout]    |          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_frame` is never used
[INFO] [stdout]   --> src/storage/bufmgr.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn add_frame(block_no: usize, block: Block) -> FrameResult {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `drop_frame` is never used
[INFO] [stdout]   --> src/storage/bufmgr.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub fn drop_frame(block_no: usize) -> FrameResult {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `table`
[INFO] [stdout]   --> src/access/ops.rs:37:15
[INFO] [stdout]    |
[INFO] [stdout] 37 |     if let Ok(table) = GLOBAL_PAGE_TABLE.read() {
[INFO] [stdout]    |               ^^^^^ help: if this is intentional, prefix it with an underscore: `_table`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]   --> src/access/ops.rs:61:15
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn move_right(val: usize, ptr: ObjectPtr, ubleftsep: f64, lock_type: LwLockType) {
[INFO] [stdout]    |               ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ptr`
[INFO] [stdout]   --> src/access/ops.rs:61:27
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn move_right(val: usize, ptr: ObjectPtr, ubleftsep: f64, lock_type: LwLockType) {
[INFO] [stdout]    |                           ^^^ help: if this is intentional, prefix it with an underscore: `_ptr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ubleftsep`
[INFO] [stdout]   --> src/access/ops.rs:61:43
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn move_right(val: usize, ptr: ObjectPtr, ubleftsep: f64, lock_type: LwLockType) {
[INFO] [stdout]    |                                           ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ubleftsep`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fast_ptr`
[INFO] [stdout]   --> src/access/ops.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |     let fast_ptr = anchor.fast;
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_fast_ptr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ubleftsep`
[INFO] [stdout]   --> src/access/ops.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |     let ubleftsep = f64::NEG_INFINITY;
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ubleftsep`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `descent`
[INFO] [stdout]   --> src/access/ops.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let descent: Vec<usize> = vec![];
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_descent`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/access/ops.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 74 |     for i in (1..enter_height).rev() {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]   --> src/access/ops.rs:65:16
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn locate_leaf(val: usize, last_lock: LwLockType) {
[INFO] [stdout]    |                ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `last_lock`
[INFO] [stdout]   --> src/access/ops.rs:65:28
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn locate_leaf(val: usize, last_lock: LwLockType) {
[INFO] [stdout]    |                            ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_last_lock`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file`
[INFO] [stdout]   --> src/ioutil/fs.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let file = std::fs::OpenOptions::new()
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 33 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `encode` is never used
[INFO] [stdout]  --> src/traits/encode.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub trait Encode {
[INFO] [stdout]   |           ------ method in this trait
[INFO] [stdout] 8 |     fn encode(&self) -> Option<Vec<u8>>
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `read` and `from_block` are never used
[INFO] [stdout]   --> src/access/node.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl Node {
[INFO] [stdout]    | --------- associated functions in this implementation
[INFO] [stdout] 25 |     pub fn read(page_no: usize) -> Block {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     pub fn from_block(buf: Block) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_anchor` is never used
[INFO] [stdout]   --> src/access/ops.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn get_anchor() -> Option<BufferPoolFrame> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_node` is never used
[INFO] [stdout]   --> src/access/ops.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn get_node(ptr: ObjectPtr) -> Option<BufferPoolFrame> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `move_right` is never used
[INFO] [stdout]   --> src/access/ops.rs:61:4
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn move_right(val: usize, ptr: ObjectPtr, ubleftsep: f64, lock_type: LwLockType) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `locate_leaf` is never used
[INFO] [stdout]   --> src/access/ops.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn locate_leaf(val: usize, last_lock: LwLockType) {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `normalize` is never used
[INFO] [stdout]   --> src/access/ops.rs:80:4
[INFO] [stdout]    |
[INFO] [stdout] 80 | fn normalize() {}
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `insert` is never used
[INFO] [stdout]   --> src/access/ops.rs:82:8
[INFO] [stdout]    |
[INFO] [stdout] 82 | pub fn insert() {}
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `delete` is never used
[INFO] [stdout]   --> src/access/ops.rs:84:8
[INFO] [stdout]    |
[INFO] [stdout] 84 | pub fn delete() {}
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `search` is never used
[INFO] [stdout]   --> src/access/ops.rs:86:8
[INFO] [stdout]    |
[INFO] [stdout] 86 | pub fn search() {}
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `write_bytes` is never used
[INFO] [stdout]  --> src/ioutil/fs.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn write_bytes(abs_path: &str, bytes: [u8; 512], offset: u64) -> Option<usize> {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `truncate` is never used
[INFO] [stdout]   --> src/ioutil/fs.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn truncate(abs_path: &str) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `block_held` is never read
[INFO] [stdout]   --> src/storage/bufmgr.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct BufferPoolFrame {
[INFO] [stdout]    |            --------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub block_held: Block,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BufferPoolFrame` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/storage/bufmgr.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl BufferPoolFrame {
[INFO] [stdout]    | -------------------- associated function in this implementation
[INFO] [stdout] 27 |     pub fn new(page_no: usize, block: Block) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fetch_frame` is never used
[INFO] [stdout]   --> src/storage/bufmgr.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn fetch_frame(page_no: usize) -> Option<BufferPoolFrame> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `FrameResult` is never used
[INFO] [stdout]   --> src/storage/bufmgr.rs:60:10
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub type FrameResult = Result<usize, String>;
[INFO] [stdout]    |          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_frame` is never used
[INFO] [stdout]   --> src/storage/bufmgr.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn add_frame(block_no: usize, block: Block) -> FrameResult {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `drop_frame` is never used
[INFO] [stdout]   --> src/storage/bufmgr.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub fn drop_frame(block_no: usize) -> FrameResult {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 33 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.01s
[INFO] running `Command { std: "docker" "inspect" "8b03e59db09310f652c7d9ae17f82272e619f7f32993f2356c2e3af872e55601", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b03e59db09310f652c7d9ae17f82272e619f7f32993f2356c2e3af872e55601", kill_on_drop: false }`
[INFO] [stdout] 8b03e59db09310f652c7d9ae17f82272e619f7f32993f2356c2e3af872e55601