[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] 265ab1ba17e366cb8bdcf744eba560730ae3ba9a
[INFO] checking MishaChavarha/SimpleRustDB against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMishaChavarha%2FSimpleRustDB" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MishaChavarha/SimpleRustDB on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", 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-5/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" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7f4f62422788cf9f8abd7dd60298950e784b8b87fe30de4330ae546f1eb9841d
[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" "7f4f62422788cf9f8abd7dd60298950e784b8b87fe30de4330ae546f1eb9841d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7f4f62422788cf9f8abd7dd60298950e784b8b87fe30de4330ae546f1eb9841d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f4f62422788cf9f8abd7dd60298950e784b8b87fe30de4330ae546f1eb9841d", kill_on_drop: false }`
[INFO] [stdout] 7f4f62422788cf9f8abd7dd60298950e784b8b87fe30de4330ae546f1eb9841d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fe712e304ae3c35ff9fb0405a4d83affddf58715272a42e8ccfad9dbe0478f72
[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" "fe712e304ae3c35ff9fb0405a4d83affddf58715272a42e8ccfad9dbe0478f72", kill_on_drop: false }`
[INFO] [stderr]     Checking positioned-io-preview v0.3.3
[INFO] [stderr]     Checking simple_rust_db v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `DirBuilder`
[INFO] [stdout]  --> src/file_manager/file_manager.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{fs::{DirBuilder, File, OpenOptions}, sync::Mutex};
[INFO] [stdout]   |                ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RandomAccessFile`
[INFO] [stdout]  --> src/file_manager/file_manager.rs:7:21
[INFO] [stdout]   |
[INFO] [stdout] 7 | use positioned_io::{RandomAccessFile, ReadAt, WriteAt};
[INFO] [stdout]   |                     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `DirBuilder`
[INFO] [stdout]  --> src/file_manager/file_manager.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{fs::{DirBuilder, File, OpenOptions}, sync::Mutex};
[INFO] [stdout]   |                ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RandomAccessFile`
[INFO] [stdout]  --> src/file_manager/file_manager.rs:7:21
[INFO] [stdout]   |
[INFO] [stdout] 7 | use positioned_io::{RandomAccessFile, ReadAt, WriteAt};
[INFO] [stdout]   |                     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `block_id::BlockId`
[INFO] [stdout]    --> src/file_manager/file_manager.rs:132:31
[INFO] [stdout]     |
[INFO] [stdout] 132 |     use crate::file_manager::{block_id::BlockId, page::*};
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/file_manager/page.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |         let mut buffer = Cursor::new(vec![0 as u8;buffer_size as usize]);
[INFO] [stdout]    |             ----^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/file_manager/file_manager.rs:82:13
[INFO] [stdout]    |
[INFO] [stdout] 82 |         let mut raf = open_files.get_mut(block.file()).unwrap();
[INFO] [stdout]    |             ----^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]  --> src/file_manager/block_id.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub fn new(file:String, number: u64) -> BlockId {
[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: `number`
[INFO] [stdout]   --> src/file_manager/block_id.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn number(&self) -> u64{
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `file`
[INFO] [stdout]   --> src/file_manager/block_id.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn file(&self) -> &str{
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/file_manager/page.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn new(buffer_size: u64) -> Page{
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `contents`
[INFO] [stdout]   --> src/file_manager/page.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn contents(&mut self) -> &mut [u8]{
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_int`
[INFO] [stdout]   --> src/file_manager/page.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |     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/file_manager/page.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     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/file_manager/page.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |     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/file_manager/page.rs:51:12
[INFO] [stdout]    |
[INFO] [stdout] 51 |     pub fn read_bytes(&mut self, offset: u64) -> Result<&[u8]>{
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `FileManager`
[INFO] [stdout]   --> src/file_manager/file_manager.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct FileManager {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/file_manager/file_manager.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn new(dir_path: PathBuf, block_size: u64) -> Result<FileManager> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `directory`
[INFO] [stdout]   --> src/file_manager/file_manager.rs:54:12
[INFO] [stdout]    |
[INFO] [stdout] 54 |     pub fn directory(&self) -> &Path {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read`
[INFO] [stdout]   --> src/file_manager/file_manager.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn read(&self, block: &BlockId, page: &mut Page) -> Result<()>{
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write`
[INFO] [stdout]   --> src/file_manager/file_manager.rs:75:12
[INFO] [stdout]    |
[INFO] [stdout] 75 |     pub fn write(&self, block: &BlockId, page: &mut Page) -> Result<()>{
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_new_block`
[INFO] [stdout]   --> src/file_manager/file_manager.rs:89:12
[INFO] [stdout]    |
[INFO] [stdout] 89 |     pub fn get_new_block(&mut self, file_name: &str) -> Result<BlockId> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `create_if_new`
[INFO] [stdout]   --> src/file_manager/file_manager.rs:99:19
[INFO] [stdout]    |
[INFO] [stdout] 99 |     pub (self) fn create_if_new(&self, open_files: & mut HashMap<String,File>, filestr: &str) -> Result<()>{
[INFO] [stdout]    |                   ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_file_size`
[INFO] [stdout]    --> src/file_manager/file_manager.rs:116:8
[INFO] [stdout]     |
[INFO] [stdout] 116 |     fn get_file_size(&self,open_files:&mut HashMap<String,File>, file: &str) -> Result<u64>{
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/file_manager/page.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |         let mut buffer = Cursor::new(vec![0 as u8;buffer_size as usize]);
[INFO] [stdout]    |             ----^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/file_manager/page.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |         self.buffer.write_u32::<LittleEndian>(size as u32);
[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/file_manager/page.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |         self.buffer.write(data);
[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: 23 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/file_manager/file_manager.rs:82:13
[INFO] [stdout]    |
[INFO] [stdout] 82 |         let mut raf = open_files.get_mut(block.file()).unwrap();
[INFO] [stdout]    |             ----^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `PageError`
[INFO] [stdout]   --> src/file_manager/page.rs:70:14
[INFO] [stdout]    |
[INFO] [stdout] 70 |     pub enum PageError {
[INFO] [stdout]    |              ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `is_new`
[INFO] [stdout]   --> src/file_manager/file_manager.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     is_new: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/file_manager/page.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |         self.buffer.write_u32::<LittleEndian>(size as u32);
[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/file_manager/page.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |         self.buffer.write(data);
[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 `std::result::Result` that must be used
[INFO] [stdout]   --> src/file_manager/page.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |         page.write_int(0, 10);
[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 `std::result::Result` that must be used
[INFO] [stdout]   --> src/file_manager/page.rs:85:9
[INFO] [stdout]    |
[INFO] [stdout] 85 |         page.write_int(10, 100);
[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 `std::result::Result` that must be used
[INFO] [stdout]   --> src/file_manager/page.rs:99:9
[INFO] [stdout]    |
[INFO] [stdout] 99 |         page.write_bytes(10, test_data);
[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 `std::result::Result` that must be used
[INFO] [stdout]    --> src/file_manager/page.rs:104:9
[INFO] [stdout]     |
[INFO] [stdout] 104 |         page.write_bytes(12, test_data2.as_bytes());
[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 `std::result::Result` that must be used
[INFO] [stdout]    --> src/file_manager/page.rs:112:9
[INFO] [stdout]     |
[INFO] [stdout] 112 |         page.write_bytes(40, test_string.as_bytes());
[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: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.06s
[INFO] running `Command { std: "docker" "inspect" "fe712e304ae3c35ff9fb0405a4d83affddf58715272a42e8ccfad9dbe0478f72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe712e304ae3c35ff9fb0405a4d83affddf58715272a42e8ccfad9dbe0478f72", kill_on_drop: false }`
[INFO] [stdout] fe712e304ae3c35ff9fb0405a4d83affddf58715272a42e8ccfad9dbe0478f72