[INFO] cloning repository https://github.com/suhanyujie/rust-repl
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/suhanyujie/rust-repl" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsuhanyujie%2Frust-repl", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsuhanyujie%2Frust-repl'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 90ad82698cbd2b91f73ba835afe0763788f57061
[INFO] checking suhanyujie/rust-repl against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsuhanyujie%2Frust-repl" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/suhanyujie/rust-repl on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/suhanyujie/rust-repl
[INFO] finished tweaking git repo https://github.com/suhanyujie/rust-repl
[INFO] tweaked toml for git repo https://github.com/suhanyujie/rust-repl written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/suhanyujie/rust-repl already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dfc8b25ce7f8dc4a4f308e500a6edd8c58ab959b0e3d851e7994a5747df1678d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "dfc8b25ce7f8dc4a4f308e500a6edd8c58ab959b0e3d851e7994a5747df1678d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dfc8b25ce7f8dc4a4f308e500a6edd8c58ab959b0e3d851e7994a5747df1678d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfc8b25ce7f8dc4a4f308e500a6edd8c58ab959b0e3d851e7994a5747df1678d", kill_on_drop: false }`
[INFO] [stdout] dfc8b25ce7f8dc4a4f308e500a6edd8c58ab959b0e3d851e7994a5747df1678d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 28146b385ebbdf5d35c869a6acb32fd0948e6fafda67390c8b1b09131dfd24e1
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "28146b385ebbdf5d35c869a6acb32fd0948e6fafda67390c8b1b09131dfd24e1", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking rust-repl v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]    --> src/command.rs:113:9
[INFO] [stdout]     |
[INFO] [stdout] 113 |     use super::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `str::FromStr`, `string::ParseError`
[INFO] [stdout]  --> src/statement.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{str::FromStr, string::ParseError};
[INFO] [stdout]   |           ^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> src/statement.rs:79:9
[INFO] [stdout]    |
[INFO] [stdout] 79 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `str::FromStr`, `string::ParseError`
[INFO] [stdout]  --> src/statement.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{str::FromStr, string::ParseError};
[INFO] [stdout]   |           ^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> src/statement.rs:79:9
[INFO] [stdout]    |
[INFO] [stdout] 79 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/command.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 66 |         std::process::exit(0);
[INFO] [stdout]    |         --------------------- any code following this expression is unreachable
[INFO] [stdout] 67 |         return MetaCmdResEnum::MetaCmdSuccess;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/command.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 66 |         std::process::exit(0);
[INFO] [stdout]    |         --------------------- any code following this expression is unreachable
[INFO] [stdout] 67 |         return MetaCmdResEnum::MetaCmdSuccess;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `NodeType`
[INFO] [stdout]  --> src/btree.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum NodeType {
[INFO] [stdout]   |      ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Node`
[INFO] [stdout]  --> src/btree.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Node {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ROW_SIZE`
[INFO] [stdout]   --> src/btree.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | const ROW_SIZE: usize = 100;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PAGE_SIZE`
[INFO] [stdout]   --> src/btree.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | const PAGE_SIZE: usize = 1000;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `NODE_TYPE_SIZE`
[INFO] [stdout]   --> src/btree.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | const NODE_TYPE_SIZE: usize = std::mem::size_of::<u8>();
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `NODE_TYPE_OFFSET`
[INFO] [stdout]   --> src/btree.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | const NODE_TYPE_OFFSET: usize = 0;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `IS_ROOT_SIZE`
[INFO] [stdout]   --> src/btree.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | const IS_ROOT_SIZE: usize = std::mem::size_of::<u8>();
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `IS_ROOT_OFFSET`
[INFO] [stdout]   --> src/btree.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | const IS_ROOT_OFFSET: usize = NODE_TYPE_SIZE;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PARENT_POINTER_SIZE`
[INFO] [stdout]   --> src/btree.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | const PARENT_POINTER_SIZE: usize = std::mem::size_of::<u32>();
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PARENT_POINTER_OFFSET`
[INFO] [stdout]   --> src/btree.rs:19:1
[INFO] [stdout]    |
[INFO] [stdout] 19 | const PARENT_POINTER_OFFSET: usize = IS_ROOT_OFFSET + IS_ROOT_SIZE;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `COMMON_NODE_HEADER_SIZE`
[INFO] [stdout]   --> src/btree.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | const COMMON_NODE_HEADER_SIZE: usize = NODE_TYPE_SIZE + IS_ROOT_SIZE + PARENT_POINTER_SIZE;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LEAF_NODE_NUM_CELLS_SIZE`
[INFO] [stdout]   --> src/btree.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | const LEAF_NODE_NUM_CELLS_SIZE: usize = std::mem::size_of::<u32>();
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LEAF_NODE_NUM_CELLS_OFFSET`
[INFO] [stdout]   --> src/btree.rs:24:1
[INFO] [stdout]    |
[INFO] [stdout] 24 | const LEAF_NODE_NUM_CELLS_OFFSET: usize = COMMON_NODE_HEADER_SIZE;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LEAF_NODE_HEADER_SIZE`
[INFO] [stdout]   --> src/btree.rs:25:1
[INFO] [stdout]    |
[INFO] [stdout] 25 | const LEAF_NODE_HEADER_SIZE: usize = COMMON_NODE_HEADER_SIZE + LEAF_NODE_NUM_CELLS_SIZE;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LEAF_NODE_KEY_SIZE`
[INFO] [stdout]   --> src/btree.rs:28:1
[INFO] [stdout]    |
[INFO] [stdout] 28 | const LEAF_NODE_KEY_SIZE: usize = std::mem::size_of::<u32>();
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LEAF_NODE_KEY_OFFSET`
[INFO] [stdout]   --> src/btree.rs:29:1
[INFO] [stdout]    |
[INFO] [stdout] 29 | const LEAF_NODE_KEY_OFFSET: usize = 0;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LEAF_NODE_VALUE_SIZE`
[INFO] [stdout]   --> src/btree.rs:30:1
[INFO] [stdout]    |
[INFO] [stdout] 30 | const LEAF_NODE_VALUE_SIZE: usize = ROW_SIZE;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LEAF_NODE_VALUE_OFFSET`
[INFO] [stdout]   --> src/btree.rs:31:1
[INFO] [stdout]    |
[INFO] [stdout] 31 | const LEAF_NODE_VALUE_OFFSET: usize = LEAF_NODE_KEY_OFFSET + LEAF_NODE_KEY_SIZE;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LEAF_NODE_CELL_SIZE`
[INFO] [stdout]   --> src/btree.rs:32:1
[INFO] [stdout]    |
[INFO] [stdout] 32 | const LEAF_NODE_CELL_SIZE: usize = std::mem::size_of::<u32>();
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LEAF_NODE_SPACE_FOR_CELLS`
[INFO] [stdout]   --> src/btree.rs:33:1
[INFO] [stdout]    |
[INFO] [stdout] 33 | const LEAF_NODE_SPACE_FOR_CELLS: usize = PAGE_SIZE - LEAF_NODE_HEADER_SIZE;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LEAF_NODE_MAX_CELLS`
[INFO] [stdout]   --> src/btree.rs:34:1
[INFO] [stdout]    |
[INFO] [stdout] 34 | const LEAF_NODE_MAX_CELLS: usize = LEAF_NODE_SPACE_FOR_CELLS / LEAF_NODE_CELL_SIZE;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused attribute
[INFO] [stdout]  --> src/statement.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `NodeType`
[INFO] [stdout]  --> src/btree.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum NodeType {
[INFO] [stdout]   |      ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Node`
[INFO] [stdout]  --> src/btree.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Node {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ROW_SIZE`
[INFO] [stdout]   --> src/btree.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | const ROW_SIZE: usize = 100;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PAGE_SIZE`
[INFO] [stdout]   --> src/btree.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | const PAGE_SIZE: usize = 1000;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `NODE_TYPE_SIZE`
[INFO] [stdout]   --> src/btree.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | const NODE_TYPE_SIZE: usize = std::mem::size_of::<u8>();
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `NODE_TYPE_OFFSET`
[INFO] [stdout]   --> src/btree.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | const NODE_TYPE_OFFSET: usize = 0;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 25 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `IS_ROOT_SIZE`
[INFO] [stdout]   --> src/btree.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | const IS_ROOT_SIZE: usize = std::mem::size_of::<u8>();
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `IS_ROOT_OFFSET`
[INFO] [stdout]   --> src/btree.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | const IS_ROOT_OFFSET: usize = NODE_TYPE_SIZE;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PARENT_POINTER_SIZE`
[INFO] [stdout]   --> src/btree.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | const PARENT_POINTER_SIZE: usize = std::mem::size_of::<u32>();
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PARENT_POINTER_OFFSET`
[INFO] [stdout]   --> src/btree.rs:19:1
[INFO] [stdout]    |
[INFO] [stdout] 19 | const PARENT_POINTER_OFFSET: usize = IS_ROOT_OFFSET + IS_ROOT_SIZE;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `COMMON_NODE_HEADER_SIZE`
[INFO] [stdout]   --> src/btree.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | const COMMON_NODE_HEADER_SIZE: usize = NODE_TYPE_SIZE + IS_ROOT_SIZE + PARENT_POINTER_SIZE;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LEAF_NODE_NUM_CELLS_SIZE`
[INFO] [stdout]   --> src/btree.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | const LEAF_NODE_NUM_CELLS_SIZE: usize = std::mem::size_of::<u32>();
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LEAF_NODE_NUM_CELLS_OFFSET`
[INFO] [stdout]   --> src/btree.rs:24:1
[INFO] [stdout]    |
[INFO] [stdout] 24 | const LEAF_NODE_NUM_CELLS_OFFSET: usize = COMMON_NODE_HEADER_SIZE;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LEAF_NODE_HEADER_SIZE`
[INFO] [stdout]   --> src/btree.rs:25:1
[INFO] [stdout]    |
[INFO] [stdout] 25 | const LEAF_NODE_HEADER_SIZE: usize = COMMON_NODE_HEADER_SIZE + LEAF_NODE_NUM_CELLS_SIZE;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LEAF_NODE_KEY_SIZE`
[INFO] [stdout]   --> src/btree.rs:28:1
[INFO] [stdout]    |
[INFO] [stdout] 28 | const LEAF_NODE_KEY_SIZE: usize = std::mem::size_of::<u32>();
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LEAF_NODE_KEY_OFFSET`
[INFO] [stdout]   --> src/btree.rs:29:1
[INFO] [stdout]    |
[INFO] [stdout] 29 | const LEAF_NODE_KEY_OFFSET: usize = 0;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LEAF_NODE_VALUE_SIZE`
[INFO] [stdout]   --> src/btree.rs:30:1
[INFO] [stdout]    |
[INFO] [stdout] 30 | const LEAF_NODE_VALUE_SIZE: usize = ROW_SIZE;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LEAF_NODE_VALUE_OFFSET`
[INFO] [stdout]   --> src/btree.rs:31:1
[INFO] [stdout]    |
[INFO] [stdout] 31 | const LEAF_NODE_VALUE_OFFSET: usize = LEAF_NODE_KEY_OFFSET + LEAF_NODE_KEY_SIZE;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LEAF_NODE_CELL_SIZE`
[INFO] [stdout]   --> src/btree.rs:32:1
[INFO] [stdout]    |
[INFO] [stdout] 32 | const LEAF_NODE_CELL_SIZE: usize = std::mem::size_of::<u32>();
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LEAF_NODE_SPACE_FOR_CELLS`
[INFO] [stdout]   --> src/btree.rs:33:1
[INFO] [stdout]    |
[INFO] [stdout] 33 | const LEAF_NODE_SPACE_FOR_CELLS: usize = PAGE_SIZE - LEAF_NODE_HEADER_SIZE;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LEAF_NODE_MAX_CELLS`
[INFO] [stdout]   --> src/btree.rs:34:1
[INFO] [stdout]    |
[INFO] [stdout] 34 | const LEAF_NODE_MAX_CELLS: usize = LEAF_NODE_SPACE_FOR_CELLS / LEAF_NODE_CELL_SIZE;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused attribute
[INFO] [stdout]  --> src/statement.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 26 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.96s
[INFO] running `Command { std: "docker" "inspect" "28146b385ebbdf5d35c869a6acb32fd0948e6fafda67390c8b1b09131dfd24e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28146b385ebbdf5d35c869a6acb32fd0948e6fafda67390c8b1b09131dfd24e1", kill_on_drop: false }`
[INFO] [stdout] 28146b385ebbdf5d35c869a6acb32fd0948e6fafda67390c8b1b09131dfd24e1