[INFO] cloning repository https://github.com/MishaChavarha/SimpleRustDB
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MishaChavarha/SimpleRustDB" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMishaChavarha%2FSimpleRustDB", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMishaChavarha%2FSimpleRustDB'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7b3884573a096579a975d1a4be3f3d77784ff935
[INFO] checking MishaChavarha/SimpleRustDB against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMishaChavarha%2FSimpleRustDB" "/workspace/builds/worker-62/source", kill_on_drop: false }`
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[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MishaChavarha/SimpleRustDB on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/MishaChavarha/SimpleRustDB
[INFO] finished tweaking git repo https://github.com/MishaChavarha/SimpleRustDB
[INFO] tweaked toml for git repo https://github.com/MishaChavarha/SimpleRustDB written to /workspace/builds/worker-62/source/Cargo.toml
[INFO] crate git repo https://github.com/MishaChavarha/SimpleRustDB already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]   Downloaded random-access-disk v2.0.0
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[INFO] running `Command { std: "docker" "start" "-a" "f4228f0389dc6b89e62971c4f6caef06ce273d637299e72b7557410d6e1d554e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4228f0389dc6b89e62971c4f6caef06ce273d637299e72b7557410d6e1d554e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4228f0389dc6b89e62971c4f6caef06ce273d637299e72b7557410d6e1d554e", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/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" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "f4df951495f10ae20cd288c908e62e814bbb36c8ddd78de946f66687833619e5", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] note: Switching to Edition 2021 will enable the use of the version 2 feature resolver in Cargo.
[INFO] [stderr] This may cause some dependencies to be built with fewer features enabled than previously.
[INFO] [stderr] More information about the resolver changes may be found at https://doc.rust-lang.org/nightly/edition-guide/rust-2021/default-cargo-resolver.html
[INFO] [stderr] When building the following dependencies, the given features will no longer be used:
[INFO] [stderr] 
[INFO] [stderr]   futures-channel v0.3.8: default
[INFO] [stderr]   syn v1.0.48 (as host dependency): visit
[INFO] [stderr] 
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]     Checking futures-core v0.3.8
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]     Checking futures-io v0.3.8
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[INFO] [stderr]    Compiling log v0.4.11
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[INFO] [stderr]    Compiling anyhow v1.0.34
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking atomic-waker v1.0.0
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[INFO] [stderr]    Compiling crossbeam-utils v0.8.0
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[INFO] [stderr]     Checking polling v2.0.2
[INFO] [stderr]     Checking nb-connect v1.0.2
[INFO] [stderr]     Checking num_cpus v1.13.0
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[INFO] [stderr]     Checking async-global-executor v1.4.3
[INFO] [stderr]     Checking async-std v1.7.0
[INFO] [stderr]    Compiling pin-project-internal v1.0.2
[INFO] [stderr]    Compiling futures-macro v0.3.8
[INFO] [stderr]    Compiling async-trait v0.1.41
[INFO] [stderr]     Checking random-access-storage v4.0.0
[INFO] [stderr]     Checking random-access-disk v2.0.0
[INFO] [stderr]     Checking pin-project v1.0.2
[INFO] [stderr]     Checking futures-util v0.3.8
[INFO] [stderr]     Checking futures-executor v0.3.8
[INFO] [stderr]     Checking futures v0.3.8
[INFO] [stderr]     Checking simple_rust_db v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed src/application.rs (2 fixes)
[INFO] [stderr]        Fixed src/application/file_manager.rs (10 fixes)
[INFO] [stderr]        Fixed src/application/log_manager.rs (3 fixes)
[INFO] [stderr]        Fixed src/application/file_manager/storage.rs (2 fixes)
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]   --> src/application/file_manager.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::io::*;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/application/file_manager.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn length(&self, file:&str) -> Result<u64> {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] 72 | 
[INFO] [stdout] 73 |         self.length(file)
[INFO] [stdout]    |         ----------------- recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/application/file_manager/page.rs:12:16
[INFO] [stdout]    |
[INFO] [stdout] 12 |         pub fn new(buffer_size: u64) -> Page{
[INFO] [stdout]    |                ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `buffer`
[INFO] [stdout]   --> src/application/file_manager/page.rs:20:16
[INFO] [stdout]    |
[INFO] [stdout] 20 |         pub fn buffer(&mut self) -> &mut [u8]{
[INFO] [stdout]    |                ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_int`
[INFO] [stdout]   --> src/application/file_manager/page.rs:26:16
[INFO] [stdout]    |
[INFO] [stdout] 26 |         pub fn write_int(&mut self, offset: u64, data: i32) -> Result<()>{
[INFO] [stdout]    |                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_int`
[INFO] [stdout]   --> src/application/file_manager/page.rs:33:16
[INFO] [stdout]    |
[INFO] [stdout] 33 |         pub fn read_int(&mut self, offset: u64) -> Result<i32> {
[INFO] [stdout]    |                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_bytes`
[INFO] [stdout]   --> src/application/file_manager/page.rs:40:16
[INFO] [stdout]    |
[INFO] [stdout] 40 |         pub fn write_bytes(&mut self, offset: u64, data: &[u8]) -> Result<()>{
[INFO] [stdout]    |                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_bytes`
[INFO] [stdout]   --> src/application/file_manager/page.rs:50:16
[INFO] [stdout]    |
[INFO] [stdout] 50 |         pub fn read_bytes(&mut self, offset: u64) -> Result<&[u8]>{
[INFO] [stdout]    |                ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]  --> src/application/file_manager/block.rs:9:16
[INFO] [stdout]   |
[INFO] [stdout] 9 |         pub fn new(file: &str, id: u64) -> Block {
[INFO] [stdout]   |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `id`
[INFO] [stdout]   --> src/application/file_manager/block.rs:16:16
[INFO] [stdout]    |
[INFO] [stdout] 16 |         pub fn id(&self) -> u64{
[INFO] [stdout]    |                ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `file`
[INFO] [stdout]   --> src/application/file_manager/block.rs:20:16
[INFO] [stdout]    |
[INFO] [stdout] 20 |         pub fn file(&self) -> &str{
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `length`
[INFO] [stdout]   --> src/application/file_manager/storage.rs:90:20
[INFO] [stdout]    |
[INFO] [stdout] 90 |     pub (super) fn length(&mut self,file:&str) -> Result<u64>{
[INFO] [stdout]    |                    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static is never used: `WORK_DIR`
[INFO] [stdout]   --> src/application.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | static WORK_DIR: &str = "Database";
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static is never used: `BLOCK_SIZE`
[INFO] [stdout]   --> src/application.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | static BLOCK_SIZE: u64 = 500; // bytes 
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Application`
[INFO] [stdout]   --> src/application.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct Application {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/application/file_manager/storage.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |         raf.read_at(offset*self.block_size, buffer);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/application/file_manager/storage.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |         raf.write_at(offset*self.block_size, buffer);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]   --> src/application/file_manager.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::io::*;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/application/file_manager.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn length(&self, file:&str) -> Result<u64> {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] 72 | 
[INFO] [stdout] 73 |         self.length(file)
[INFO] [stdout]    |         ----------------- recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `buffer`
[INFO] [stdout]   --> src/application/file_manager/page.rs:20:16
[INFO] [stdout]    |
[INFO] [stdout] 20 |         pub fn buffer(&mut self) -> &mut [u8]{
[INFO] [stdout]    |                ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `id`
[INFO] [stdout]   --> src/application/file_manager/block.rs:16:16
[INFO] [stdout]    |
[INFO] [stdout] 16 |         pub fn id(&self) -> u64{
[INFO] [stdout]    |                ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `file`
[INFO] [stdout]   --> src/application/file_manager/block.rs:20:16
[INFO] [stdout]    |
[INFO] [stdout] 20 |         pub fn file(&self) -> &str{
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `length`
[INFO] [stdout]   --> src/application/file_manager/storage.rs:90:20
[INFO] [stdout]    |
[INFO] [stdout] 90 |     pub (super) fn length(&mut self,file:&str) -> Result<u64>{
[INFO] [stdout]    |                    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static is never used: `BLOCK_SIZE`
[INFO] [stdout]   --> src/application.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | static BLOCK_SIZE: u64 = 500; // bytes 
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Application`
[INFO] [stdout]   --> src/application.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct Application {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/application/file_manager/storage.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |         raf.read_at(offset*self.block_size, buffer);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/application/file_manager/storage.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |         raf.write_at(offset*self.block_size, buffer);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.23s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]     Checking futures-channel v0.3.8
[INFO] [stderr]    Compiling pin-project-internal v1.0.2
[INFO] [stderr]    Compiling futures-macro v0.3.8
[INFO] [stderr]    Compiling async-trait v0.1.41
[INFO] [stderr]     Checking pin-project v1.0.2
[INFO] [stderr]     Checking futures-util v0.3.8
[INFO] [stderr]     Checking random-access-storage v4.0.0
[INFO] [stderr]     Checking random-access-disk v2.0.0
[INFO] [stderr]     Checking futures-executor v0.3.8
[INFO] [stderr]     Checking futures v0.3.8
[INFO] [stderr]     Checking simple_rust_db v0.1.0 (/tmp/fixit)
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]   --> src/application/file_manager.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::io::*;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/application/file_manager.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn length(&self, file:&str) -> Result<u64> {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] 72 | 
[INFO] [stdout] 73 |         self.length(file)
[INFO] [stdout]    |         ----------------- recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/application/file_manager/page.rs:12:16
[INFO] [stdout]    |
[INFO] [stdout] 12 |         pub fn new(buffer_size: u64) -> Page{
[INFO] [stdout]    |                ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `buffer`
[INFO] [stdout]   --> src/application/file_manager/page.rs:20:16
[INFO] [stdout]    |
[INFO] [stdout] 20 |         pub fn buffer(&mut self) -> &mut [u8]{
[INFO] [stdout]    |                ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_int`
[INFO] [stdout]   --> src/application/file_manager/page.rs:26:16
[INFO] [stdout]    |
[INFO] [stdout] 26 |         pub fn write_int(&mut self, offset: u64, data: i32) -> Result<()>{
[INFO] [stdout]    |                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_int`
[INFO] [stdout]   --> src/application/file_manager/page.rs:33:16
[INFO] [stdout]    |
[INFO] [stdout] 33 |         pub fn read_int(&mut self, offset: u64) -> Result<i32> {
[INFO] [stdout]    |                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_bytes`
[INFO] [stdout]   --> src/application/file_manager/page.rs:40:16
[INFO] [stdout]    |
[INFO] [stdout] 40 |         pub fn write_bytes(&mut self, offset: u64, data: &[u8]) -> Result<()>{
[INFO] [stdout]    |                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_bytes`
[INFO] [stdout]   --> src/application/file_manager/page.rs:50:16
[INFO] [stdout]    |
[INFO] [stdout] 50 |         pub fn read_bytes(&mut self, offset: u64) -> Result<&[u8]>{
[INFO] [stdout]    |                ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]  --> src/application/file_manager/block.rs:9:16
[INFO] [stdout]   |
[INFO] [stdout] 9 |         pub fn new(file: &str, id: u64) -> Block {
[INFO] [stdout]   |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `id`
[INFO] [stdout]   --> src/application/file_manager/block.rs:16:16
[INFO] [stdout]    |
[INFO] [stdout] 16 |         pub fn id(&self) -> u64{
[INFO] [stdout]    |                ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `file`
[INFO] [stdout]   --> src/application/file_manager/block.rs:20:16
[INFO] [stdout]    |
[INFO] [stdout] 20 |         pub fn file(&self) -> &str{
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `length`
[INFO] [stdout]   --> src/application/file_manager/storage.rs:90:20
[INFO] [stdout]    |
[INFO] [stdout] 90 |     pub (super) fn length(&mut self,file:&str) -> Result<u64>{
[INFO] [stdout]    |                    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static is never used: `WORK_DIR`
[INFO] [stdout]   --> src/application.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | static WORK_DIR: &str = "Database";
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static is never used: `BLOCK_SIZE`
[INFO] [stdout]   --> src/application.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | static BLOCK_SIZE: u64 = 500; // bytes 
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Application`
[INFO] [stdout]   --> src/application.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct Application {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/application/file_manager/storage.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |         raf.read_at(offset*self.block_size, buffer);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/application/file_manager/storage.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |         raf.write_at(offset*self.block_size, buffer);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]   --> src/application/file_manager.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::io::*;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/application/file_manager.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn length(&self, file:&str) -> Result<u64> {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] 72 | 
[INFO] [stdout] 73 |         self.length(file)
[INFO] [stdout]    |         ----------------- recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `buffer`
[INFO] [stdout]   --> src/application/file_manager/page.rs:20:16
[INFO] [stdout]    |
[INFO] [stdout] 20 |         pub fn buffer(&mut self) -> &mut [u8]{
[INFO] [stdout]    |                ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `id`
[INFO] [stdout]   --> src/application/file_manager/block.rs:16:16
[INFO] [stdout]    |
[INFO] [stdout] 16 |         pub fn id(&self) -> u64{
[INFO] [stdout]    |                ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `file`
[INFO] [stdout]   --> src/application/file_manager/block.rs:20:16
[INFO] [stdout]    |
[INFO] [stdout] 20 |         pub fn file(&self) -> &str{
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `length`
[INFO] [stdout]   --> src/application/file_manager/storage.rs:90:20
[INFO] [stdout]    |
[INFO] [stdout] 90 |     pub (super) fn length(&mut self,file:&str) -> Result<u64>{
[INFO] [stdout]    |                    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static is never used: `BLOCK_SIZE`
[INFO] [stdout]   --> src/application.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | static BLOCK_SIZE: u64 = 500; // bytes 
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Application`
[INFO] [stdout]   --> src/application.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct Application {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/application/file_manager/storage.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |         raf.read_at(offset*self.block_size, buffer);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/application/file_manager/storage.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |         raf.write_at(offset*self.block_size, buffer);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.64s
[INFO] running `Command { std: "docker" "inspect" "f4df951495f10ae20cd288c908e62e814bbb36c8ddd78de946f66687833619e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4df951495f10ae20cd288c908e62e814bbb36c8ddd78de946f66687833619e5", kill_on_drop: false }`
[INFO] [stdout] f4df951495f10ae20cd288c908e62e814bbb36c8ddd78de946f66687833619e5