[INFO] cloning repository https://github.com/ShaneEverittM/rust_db
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ShaneEverittM/rust_db" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShaneEverittM%2Frust_db", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShaneEverittM%2Frust_db'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ec9a86bb5a81c3e56e947872d6d2bf26ca853b02
[INFO] checking ShaneEverittM/rust_db against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShaneEverittM%2Frust_db" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ShaneEverittM/rust_db 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/ShaneEverittM/rust_db
[INFO] finished tweaking git repo https://github.com/ShaneEverittM/rust_db
[INFO] tweaked toml for git repo https://github.com/ShaneEverittM/rust_db written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/ShaneEverittM/rust_db 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 }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 851a3eb7a2d559600d2e4baa8243c9f5bee001096c5360216e68292c97565302
[INFO] running `Command { std: "docker" "start" "-a" "851a3eb7a2d559600d2e4baa8243c9f5bee001096c5360216e68292c97565302", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "851a3eb7a2d559600d2e4baa8243c9f5bee001096c5360216e68292c97565302", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "851a3eb7a2d559600d2e4baa8243c9f5bee001096c5360216e68292c97565302", kill_on_drop: false }`
[INFO] [stdout] 851a3eb7a2d559600d2e4baa8243c9f5bee001096c5360216e68292c97565302
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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 }`
[INFO] [stdout] b63c457780a6ef75f0939e2e2742726959606262f7b58540decefe74c69fb118
[INFO] running `Command { std: "docker" "start" "-a" "b63c457780a6ef75f0939e2e2742726959606262f7b58540decefe74c69fb118", 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]     Checking bytes v0.6.0
[INFO] [stderr]     Checking rust_db v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stdout] warning: constant is never used: `PAGE_SIZE`
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | const PAGE_SIZE: usize = 4096;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PAGE_SIZE`
[INFO] [stdout]  --> src/file_manager/file_handle.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | const PAGE_SIZE: usize = 4096;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `FileHandle`
[INFO] [stdout]  --> src/file_manager/file_handle.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct FileHandle {
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/file_manager/file_handle.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn new(mut file: File) -> std::result::Result<Self, std::io::Error> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_counters`
[INFO] [stdout]   --> src/file_manager/file_handle.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn write_counters(&mut self) -> Result<usize> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_page`
[INFO] [stdout]   --> src/file_manager/file_handle.rs:71:12
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn read_page(&mut self, page_num: usize, data: &mut BytesMut) -> Result<usize> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_from`
[INFO] [stdout]   --> src/file_manager/file_handle.rs:83:8
[INFO] [stdout]    |
[INFO] [stdout] 83 |     fn read_from(&mut self, pos: u64, data: &mut BytesMut) -> Result<usize> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_page`
[INFO] [stdout]   --> src/file_manager/file_handle.rs:91:12
[INFO] [stdout]    |
[INFO] [stdout] 91 |     pub fn write_page(&mut self, page_num: usize, data: &BytesMut) -> Result<usize> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_to`
[INFO] [stdout]    --> src/file_manager/file_handle.rs:103:8
[INFO] [stdout]     |
[INFO] [stdout] 103 |     fn write_to(&mut self, pos: u64, data: &BytesMut) -> Result<usize> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `append_page`
[INFO] [stdout]    --> src/file_manager/file_handle.rs:108:12
[INFO] [stdout]     |
[INFO] [stdout] 108 |     pub fn append_page(&mut self, data: &BytesMut) -> Result<usize> {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_num_pages`
[INFO] [stdout]    --> src/file_manager/file_handle.rs:115:12
[INFO] [stdout]     |
[INFO] [stdout] 115 |     pub fn get_num_pages(&self) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]        Fixed src/file_manager/file_handle.rs (2 fixes)
[INFO] [stdout] warning: constant is never used: `PAGE_SIZE`
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | const PAGE_SIZE: usize = 4096;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `read_count`
[INFO] [stdout]   --> src/file_manager/file_handle.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     read_count: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_counters`
[INFO] [stdout]   --> src/file_manager/file_handle.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn write_counters(&mut self) -> Result<usize> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_num_pages`
[INFO] [stdout]    --> src/file_manager/file_handle.rs:115:12
[INFO] [stdout]     |
[INFO] [stdout] 115 |     pub fn get_num_pages(&self) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/file_manager/file_handle.rs:154:9
[INFO] [stdout]     |
[INFO] [stdout] 154 |         std::fs::remove_file(file_name);
[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 `Result` that must be used
[INFO] [stdout]    --> src/file_manager/file_handle.rs:209:9
[INFO] [stdout]     |
[INFO] [stdout] 209 |         std::fs::remove_file(file_name);
[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: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 20s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Checking rust_db v0.1.0 (/tmp/fixit)
[INFO] [stdout] warning: constant is never used: `PAGE_SIZE`
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | const PAGE_SIZE: usize = 4096;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PAGE_SIZE`
[INFO] [stdout]  --> src/file_manager/file_handle.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | const PAGE_SIZE: usize = 4096;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `FileHandle`
[INFO] [stdout]  --> src/file_manager/file_handle.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct FileHandle {
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/file_manager/file_handle.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn new(mut file: File) -> std::result::Result<Self, std::io::Error> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_counters`
[INFO] [stdout]   --> src/file_manager/file_handle.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn write_counters(&mut self) -> Result<usize> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_page`
[INFO] [stdout]   --> src/file_manager/file_handle.rs:71:12
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn read_page(&mut self, page_num: usize, data: &mut BytesMut) -> Result<usize> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_from`
[INFO] [stdout]   --> src/file_manager/file_handle.rs:83:8
[INFO] [stdout]    |
[INFO] [stdout] 83 |     fn read_from(&mut self, pos: u64, data: &mut BytesMut) -> Result<usize> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_page`
[INFO] [stdout]   --> src/file_manager/file_handle.rs:91:12
[INFO] [stdout]    |
[INFO] [stdout] 91 |     pub fn write_page(&mut self, page_num: usize, data: &BytesMut) -> Result<usize> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_to`
[INFO] [stdout]    --> src/file_manager/file_handle.rs:103:8
[INFO] [stdout]     |
[INFO] [stdout] 103 |     fn write_to(&mut self, pos: u64, data: &BytesMut) -> Result<usize> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `append_page`
[INFO] [stdout]    --> src/file_manager/file_handle.rs:108:12
[INFO] [stdout]     |
[INFO] [stdout] 108 |     pub fn append_page(&mut self, data: &BytesMut) -> Result<usize> {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_num_pages`
[INFO] [stdout]    --> src/file_manager/file_handle.rs:115:12
[INFO] [stdout]     |
[INFO] [stdout] 115 |     pub fn get_num_pages(&self) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PAGE_SIZE`
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | const PAGE_SIZE: usize = 4096;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `read_count`
[INFO] [stdout]   --> src/file_manager/file_handle.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     read_count: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_counters`
[INFO] [stdout]   --> src/file_manager/file_handle.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn write_counters(&mut self) -> Result<usize> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_num_pages`
[INFO] [stdout]    --> src/file_manager/file_handle.rs:115:12
[INFO] [stdout]     |
[INFO] [stdout] 115 |     pub fn get_num_pages(&self) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/file_manager/file_handle.rs:154:9
[INFO] [stdout]     |
[INFO] [stdout] 154 |         std::fs::remove_file(file_name);
[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 `Result` that must be used
[INFO] [stdout]    --> src/file_manager/file_handle.rs:209:9
[INFO] [stdout]     |
[INFO] [stdout] 209 |         std::fs::remove_file(file_name);
[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: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `Command { std: "docker" "inspect" "b63c457780a6ef75f0939e2e2742726959606262f7b58540decefe74c69fb118", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b63c457780a6ef75f0939e2e2742726959606262f7b58540decefe74c69fb118", kill_on_drop: false }`
[INFO] [stdout] b63c457780a6ef75f0939e2e2742726959606262f7b58540decefe74c69fb118