[INFO] cloning repository https://github.com/iterlace/versebase
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/iterlace/versebase" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiterlace%2Fversebase", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiterlace%2Fversebase'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cdb11a7ea5b08630f9e90600cb42a1abb685643a
[INFO] checking iterlace/versebase against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiterlace%2Fversebase" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/iterlace/versebase
[INFO] finished tweaking git repo https://github.com/iterlace/versebase
[INFO] tweaked toml for git repo https://github.com/iterlace/versebase written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/iterlace/versebase on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/iterlace/versebase 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ccf9ad05a252adb4ee0d3824db029e3bf851768982b3e874f4fb3e01eb0af7fd
[INFO] running `Command { std: "docker" "start" "-a" "ccf9ad05a252adb4ee0d3824db029e3bf851768982b3e874f4fb3e01eb0af7fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ccf9ad05a252adb4ee0d3824db029e3bf851768982b3e874f4fb3e01eb0af7fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ccf9ad05a252adb4ee0d3824db029e3bf851768982b3e874f4fb3e01eb0af7fd", kill_on_drop: false }`
[INFO] [stdout] ccf9ad05a252adb4ee0d3824db029e3bf851768982b3e874f4fb3e01eb0af7fd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7be3a30e32bc68c328a54652b683577b5cc1bf9c9b71a01e8e1722134ec447d2
[INFO] running `Command { std: "docker" "start" "-a" "7be3a30e32bc68c328a54652b683577b5cc1bf9c9b71a01e8e1722134ec447d2", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling libc v0.2.117
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]     Checking unicode-xid v0.2.2
[INFO] [stderr]     Checking versebase_playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking quote v1.0.15
[INFO] [stderr]     Checking getrandom v0.2.4
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking versebase v0.1.0 (/opt/rustwide/workdir/versebase)
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> versebase/src/error.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> versebase/src/error.rs:6:21
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::io::{self, Read};
[INFO] [stdout]   |                     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::marker::PhantomData`
[INFO] [stdout]  --> versebase/src/index.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::marker::PhantomData;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashMap`
[INFO] [stdout]  --> versebase/src/index.rs:3:24
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::{HashMap, BTreeMap};
[INFO] [stdout]   |                        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `fs`
[INFO] [stdout]  --> versebase/src/index.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::{fs, u64};
[INFO] [stdout]   |           ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufReader`
[INFO] [stdout]  --> versebase/src/index.rs:7:15
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io::{BufReader, Read, Seek, SeekFrom, Write};
[INFO] [stdout]   |               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::ErrorKind::AlreadyExists`
[INFO] [stdout]  --> versebase/src/index.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::io::ErrorKind::AlreadyExists;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> versebase/src/index.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::distributions::uniform::SampleBorrow`
[INFO] [stdout]   --> versebase/src/index.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use rand::distributions::uniform::SampleBorrow;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> versebase/src/table.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::fs::{self, File, OpenOptions};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufReader`
[INFO] [stdout]  --> versebase/src/table.rs:6:21
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::io::{self, BufReader, Read, Seek, SeekFrom, Write};
[INFO] [stdout]   |                     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::ErrorKind::AlreadyExists`
[INFO] [stdout]  --> versebase/src/table.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io::ErrorKind::AlreadyExists;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::any::Any`
[INFO] [stdout]  --> versebase/src/table.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::any::Any;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]   --> versebase/src/table.rs:10:20
[INFO] [stdout]    |
[INFO] [stdout] 10 | use super::error::{self, Error, ErrorKind};
[INFO] [stdout]    |                    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> versebase/src/datatypes.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `chrono::Date`
[INFO] [stdout]  --> versebase/src/datatypes.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use chrono::Date;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> versebase/src/error.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> versebase/src/error.rs:6:21
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::io::{self, Read};
[INFO] [stdout]   |                     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::marker::PhantomData`
[INFO] [stdout]  --> versebase/src/index.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::marker::PhantomData;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashMap`
[INFO] [stdout]  --> versebase/src/index.rs:3:24
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::{HashMap, BTreeMap};
[INFO] [stdout]   |                        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `fs`
[INFO] [stdout]  --> versebase/src/index.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::{fs, u64};
[INFO] [stdout]   |           ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufReader`
[INFO] [stdout]  --> versebase/src/index.rs:7:15
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io::{BufReader, Read, Seek, SeekFrom, Write};
[INFO] [stdout]   |               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::ErrorKind::AlreadyExists`
[INFO] [stdout]  --> versebase/src/index.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::io::ErrorKind::AlreadyExists;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> versebase/src/index.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::distributions::uniform::SampleBorrow`
[INFO] [stdout]   --> versebase/src/index.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use rand::distributions::uniform::SampleBorrow;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> versebase/src/table.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::fs::{self, File, OpenOptions};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufReader`
[INFO] [stdout]  --> versebase/src/table.rs:6:21
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::io::{self, BufReader, Read, Seek, SeekFrom, Write};
[INFO] [stdout]   |                     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::ErrorKind::AlreadyExists`
[INFO] [stdout]  --> versebase/src/table.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io::ErrorKind::AlreadyExists;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::any::Any`
[INFO] [stdout]  --> versebase/src/table.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::any::Any;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]   --> versebase/src/table.rs:10:20
[INFO] [stdout]    |
[INFO] [stdout] 10 | use super::error::{self, Error, ErrorKind};
[INFO] [stdout]    |                    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> versebase/src/datatypes.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `chrono::Date`
[INFO] [stdout]  --> versebase/src/datatypes.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use chrono::Date;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `DataType`
[INFO] [stdout]   --> versebase/src/table.rs:12:24
[INFO] [stdout]    |
[INFO] [stdout] 12 | use super::datatypes::{DataType, DType};
[INFO] [stdout]    |                        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pos`
[INFO] [stdout]    --> versebase/src/table.rs:328:13
[INFO] [stdout]     |
[INFO] [stdout] 328 |         let pos = match self.find(row.get_id())? {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_pos`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `row`
[INFO] [stdout]    --> versebase/src/table.rs:336:14
[INFO] [stdout]     |
[INFO] [stdout] 336 |         let (row, begin, end) = match self.find(id)? {
[INFO] [stdout]     |              ^^^ help: if this is intentional, prefix it with an underscore: `_row`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> versebase/src/table.rs:363:13
[INFO] [stdout]     |
[INFO] [stdout] 363 |         let mut index = match &mut self.index {
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `end`
[INFO] [stdout]    --> versebase/src/table.rs:373:35
[INFO] [stdout]     |
[INFO] [stdout] 373 |                 Some((row, begin, end)) => {
[INFO] [stdout]     |                                   ^^^ help: if this is intentional, prefix it with an underscore: `_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Database` is never constructed
[INFO] [stdout]  --> versebase/src/db.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Database {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `filepath` is never read
[INFO] [stdout]   --> versebase/src/table.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 31 | struct TableFile<S: TableSchema> {
[INFO] [stdout]    |        --------- field in this struct
[INFO] [stdout] 32 |     pub filepath: Box<Path>,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> versebase/src/index.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         instance.load();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let _ = instance.load();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<[u8; 4], Infallible>
[INFO] [stdout]   --> versebase/src/index.rs:61:41
[INFO] [stdout]    |
[INFO] [stdout] 61 |             let id = i32::from_ne_bytes(id_buf.try_into().unwrap());
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<[u8; 8], Infallible>
[INFO] [stdout]   --> versebase/src/index.rs:62:42
[INFO] [stdout]    |
[INFO] [stdout] 62 |             let pos = u64::from_ne_bytes(pos_buf.try_into().unwrap());
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> versebase/src/index.rs:111:9
[INFO] [stdout]     |
[INFO] [stdout] 111 |         self.dump();
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 111 |         let _ = self.dump();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> versebase/src/table.rs:123:13
[INFO] [stdout]     |
[INFO] [stdout] 123 |             &buf.push(b[0]);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 123 |             let _ = &buf.push(b[0]);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> versebase/src/table.rs:136:17
[INFO] [stdout]     |
[INFO] [stdout] 136 |                 &buf.clear();
[INFO] [stdout]     |                 ^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 136 |                 let _ = &buf.clear();
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> versebase/src/table.rs:185:9
[INFO] [stdout]     |
[INFO] [stdout] 185 |         self.file.seek(SeekFrom::Start(end));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 185 |         let _ = self.file.seek(SeekFrom::Start(end));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> versebase/src/table.rs:187:9
[INFO] [stdout]     |
[INFO] [stdout] 187 |         self.file.read_to_end(&mut buf);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 187 |         let _ = self.file.read_to_end(&mut buf);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> versebase/src/table.rs:190:9
[INFO] [stdout]     |
[INFO] [stdout] 190 |         self.file.set_len(begin);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 190 |         let _ = self.file.set_len(begin);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> versebase/src/table.rs:191:9
[INFO] [stdout]     |
[INFO] [stdout] 191 |         self.file.seek(SeekFrom::End(0));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 191 |         let _ = self.file.seek(SeekFrom::End(0));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> versebase/src/table.rs:193:9
[INFO] [stdout]     |
[INFO] [stdout] 193 |         self.file.write_all(&buf);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 193 |         let _ = self.file.write_all(&buf);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> versebase/src/table.rs:226:9
[INFO] [stdout]     |
[INFO] [stdout] 226 |         table.refresh_indexes();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 226 |         let _ = table.refresh_indexes();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> versebase/src/table.rs:236:25
[INFO] [stdout]     |
[INFO] [stdout] 236 |                         self.file.seek(pos as i64);
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 236 |                         let _ = self.file.seek(pos as i64);
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> versebase/src/table.rs:341:9
[INFO] [stdout]     |
[INFO] [stdout] 341 |         self.refresh_indexes();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 341 |         let _ = self.refresh_indexes();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> versebase/src/table.rs:368:9
[INFO] [stdout]     |
[INFO] [stdout] 368 |         self.file.seek(0);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 368 |         let _ = self.file.seek(0);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `DataType`
[INFO] [stdout]   --> versebase/src/table.rs:12:24
[INFO] [stdout]    |
[INFO] [stdout] 12 | use super::datatypes::{DataType, DType};
[INFO] [stdout]    |                        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `versebase` (lib test) due to 2 previous errors; 36 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `pos`
[INFO] [stdout]    --> versebase/src/table.rs:328:13
[INFO] [stdout]     |
[INFO] [stdout] 328 |         let pos = match self.find(row.get_id())? {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_pos`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `row`
[INFO] [stdout]    --> versebase/src/table.rs:336:14
[INFO] [stdout]     |
[INFO] [stdout] 336 |         let (row, begin, end) = match self.find(id)? {
[INFO] [stdout]     |              ^^^ help: if this is intentional, prefix it with an underscore: `_row`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> versebase/src/table.rs:363:13
[INFO] [stdout]     |
[INFO] [stdout] 363 |         let mut index = match &mut self.index {
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `end`
[INFO] [stdout]    --> versebase/src/table.rs:373:35
[INFO] [stdout]     |
[INFO] [stdout] 373 |                 Some((row, begin, end)) => {
[INFO] [stdout]     |                                   ^^^ help: if this is intentional, prefix it with an underscore: `_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Database` is never constructed
[INFO] [stdout]  --> versebase/src/db.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Database {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `filepath` is never read
[INFO] [stdout]   --> versebase/src/table.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 31 | struct TableFile<S: TableSchema> {
[INFO] [stdout]    |        --------- field in this struct
[INFO] [stdout] 32 |     pub filepath: Box<Path>,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> versebase/src/index.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         instance.load();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let _ = instance.load();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<[u8; 4], Infallible>
[INFO] [stdout]   --> versebase/src/index.rs:61:41
[INFO] [stdout]    |
[INFO] [stdout] 61 |             let id = i32::from_ne_bytes(id_buf.try_into().unwrap());
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<[u8; 8], Infallible>
[INFO] [stdout]   --> versebase/src/index.rs:62:42
[INFO] [stdout]    |
[INFO] [stdout] 62 |             let pos = u64::from_ne_bytes(pos_buf.try_into().unwrap());
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> versebase/src/index.rs:111:9
[INFO] [stdout]     |
[INFO] [stdout] 111 |         self.dump();
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 111 |         let _ = self.dump();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> versebase/src/table.rs:123:13
[INFO] [stdout]     |
[INFO] [stdout] 123 |             &buf.push(b[0]);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 123 |             let _ = &buf.push(b[0]);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> versebase/src/table.rs:136:17
[INFO] [stdout]     |
[INFO] [stdout] 136 |                 &buf.clear();
[INFO] [stdout]     |                 ^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 136 |                 let _ = &buf.clear();
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> versebase/src/table.rs:185:9
[INFO] [stdout]     |
[INFO] [stdout] 185 |         self.file.seek(SeekFrom::Start(end));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 185 |         let _ = self.file.seek(SeekFrom::Start(end));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> versebase/src/table.rs:187:9
[INFO] [stdout]     |
[INFO] [stdout] 187 |         self.file.read_to_end(&mut buf);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 187 |         let _ = self.file.read_to_end(&mut buf);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> versebase/src/table.rs:190:9
[INFO] [stdout]     |
[INFO] [stdout] 190 |         self.file.set_len(begin);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 190 |         let _ = self.file.set_len(begin);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> versebase/src/table.rs:191:9
[INFO] [stdout]     |
[INFO] [stdout] 191 |         self.file.seek(SeekFrom::End(0));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 191 |         let _ = self.file.seek(SeekFrom::End(0));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> versebase/src/table.rs:193:9
[INFO] [stdout]     |
[INFO] [stdout] 193 |         self.file.write_all(&buf);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 193 |         let _ = self.file.write_all(&buf);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> versebase/src/table.rs:226:9
[INFO] [stdout]     |
[INFO] [stdout] 226 |         table.refresh_indexes();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 226 |         let _ = table.refresh_indexes();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> versebase/src/table.rs:236:25
[INFO] [stdout]     |
[INFO] [stdout] 236 |                         self.file.seek(pos as i64);
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 236 |                         let _ = self.file.seek(pos as i64);
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> versebase/src/table.rs:341:9
[INFO] [stdout]     |
[INFO] [stdout] 341 |         self.refresh_indexes();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 341 |         let _ = self.refresh_indexes();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> versebase/src/table.rs:368:9
[INFO] [stdout]     |
[INFO] [stdout] 368 |         self.file.seek(0);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 368 |         let _ = self.file.seek(0);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `versebase` (lib) due to 2 previous errors; 36 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "7be3a30e32bc68c328a54652b683577b5cc1bf9c9b71a01e8e1722134ec447d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7be3a30e32bc68c328a54652b683577b5cc1bf9c9b71a01e8e1722134ec447d2", kill_on_drop: false }`
[INFO] [stdout] 7be3a30e32bc68c328a54652b683577b5cc1bf9c9b71a01e8e1722134ec447d2
