[INFO] fetching crate cdbc 0.1.23...
[INFO] checking cdbc-0.1.23 against master#8c6ce6b91b172f77c795a74bfeaf74b865146b3f for pr-101345
[INFO] extracting crate cdbc 0.1.23 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate cdbc 0.1.23 on toolchain 8c6ce6b91b172f77c795a74bfeaf74b865146b3f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8c6ce6b91b172f77c795a74bfeaf74b865146b3f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cdbc 0.1.23
[INFO] finished tweaking crates.io crate cdbc 0.1.23
[INFO] tweaked toml for crates.io crate cdbc 0.1.23 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8c6ce6b91b172f77c795a74bfeaf74b865146b3f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8c6ce6b91b172f77c795a74bfeaf74b865146b3f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mco-gen v0.1.0
[INFO] [stderr]   Downloaded cdbc-macro v0.1.23
[INFO] [stderr]   Downloaded mco v0.1.43
[INFO] [stderr]   Downloaded nix v0.21.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+8c6ce6b91b172f77c795a74bfeaf74b865146b3f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 928f7ab0319f0f43d115ced4450bbd7e86619235a0f6320611efbab1c6897dcc
[INFO] running `Command { std: "docker" "start" "-a" "928f7ab0319f0f43d115ced4450bbd7e86619235a0f6320611efbab1c6897dcc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "928f7ab0319f0f43d115ced4450bbd7e86619235a0f6320611efbab1c6897dcc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "928f7ab0319f0f43d115ced4450bbd7e86619235a0f6320611efbab1c6897dcc", kill_on_drop: false }`
[INFO] [stdout] 928f7ab0319f0f43d115ced4450bbd7e86619235a0f6320611efbab1c6897dcc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+8c6ce6b91b172f77c795a74bfeaf74b865146b3f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9b5254245efe9ac8bbbfdc1b3c4cc95e064324f0d1fc15eb41ed26d8853d2b8b
[INFO] running `Command { std: "docker" "start" "-a" "9b5254245efe9ac8bbbfdc1b3c4cc95e064324f0d1fc15eb41ed26d8853d2b8b", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]     Checking once_cell v1.14.0
[INFO] [stderr]    Compiling rustversion v1.0.9
[INFO] [stderr]    Compiling crossbeam-utils v0.8.11
[INFO] [stderr]    Compiling serde_derive v1.0.144
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling serde v1.0.144
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling crossbeam-queue v0.3.6
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking smallvec v1.9.0
[INFO] [stderr]     Checking itoa v1.0.3
[INFO] [stderr]    Compiling serde_json v1.0.85
[INFO] [stderr]     Checking num_threads v0.1.6
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking ryu v1.0.11
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[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.10
[INFO] [stderr]    Compiling lock_api v0.4.8
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking crossbeam-deque v0.8.2
[INFO] [stderr]     Checking crossbeam v0.8.2
[INFO] [stderr]    Compiling mco-gen v0.1.0
[INFO] [stderr]    Compiling mco v0.1.43
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking nix v0.21.2
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking socket2 v0.4.7
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking hashlink v0.7.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.33
[INFO] [stderr]    Compiling cdbc-macro v0.1.23
[INFO] [stderr]     Checking thiserror v1.0.33
[INFO] [stderr]     Checking time v0.3.14
[INFO] [stderr]     Checking either v1.8.0
[INFO] [stderr]     Checking cdbc v0.1.23 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mco::std::sync::channel`
[INFO] [stdout]   --> src/error.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use mco::std::sync::channel;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `PoolConnection`
[INFO] [stdout]  --> src/pool/executor.rs:8:25
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::pool::{Pool, PoolConnection};
[INFO] [stdout]   |                         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `err_end`
[INFO] [stdout]    --> src/io/chan_stream.rs:108:26
[INFO] [stdout]     |
[INFO] [stdout] 108 |             macro_rules! err_end {
[INFO] [stdout]     |                          ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `end`
[INFO] [stdout]    --> src/io/chan_stream.rs:115:26
[INFO] [stdout]     |
[INFO] [stdout] 115 |             macro_rules! end {
[INFO] [stdout]     |                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mco::std::sync::Blocker`
[INFO] [stdout]  --> src/pool/connection.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use mco::std::sync::Blocker;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::executor::Executor`
[INFO] [stdout]   --> src/pool/connection.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::executor::Executor;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mco::std::sync::channel`
[INFO] [stdout]   --> src/error.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use mco::std::sync::channel;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mco::std::sync::Blocker`
[INFO] [stdout]   --> src/pool/inner.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use mco::std::sync::Blocker;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AtomicUsize`
[INFO] [stdout]  --> src/pool/semaphore.rs:2:36
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::sync::atomic::{AtomicI64, AtomicUsize, Ordering};
[INFO] [stdout]   |                                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `PoolConnection`
[INFO] [stdout]  --> src/pool/executor.rs:8:25
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::pool::{Pool, PoolConnection};
[INFO] [stdout]   |                         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `err_end`
[INFO] [stdout]    --> src/io/chan_stream.rs:108:26
[INFO] [stdout]     |
[INFO] [stdout] 108 |             macro_rules! err_end {
[INFO] [stdout]     |                          ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `end`
[INFO] [stdout]    --> src/io/chan_stream.rs:115:26
[INFO] [stdout]     |
[INFO] [stdout] 115 |             macro_rules! end {
[INFO] [stdout]     |                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mco::std::sync::Blocker`
[INFO] [stdout]  --> src/pool/connection.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use mco::std::sync::Blocker;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::executor::Executor`
[INFO] [stdout]   --> src/pool/connection.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::executor::Executor;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mco::std::sync::Blocker`
[INFO] [stdout]   --> src/pool/inner.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use mco::std::sync::Blocker;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AtomicUsize`
[INFO] [stdout]  --> src/pool/semaphore.rs:2:36
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::sync::atomic::{AtomicI64, AtomicUsize, Ordering};
[INFO] [stdout]   |                                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Semphore`
[INFO] [stdout]  --> src/pool/semaphore.rs:4:31
[INFO] [stdout]   |
[INFO] [stdout] 4 | use mco::std::sync::{Blocker, Semphore};
[INFO] [stdout]   |                               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::Error`
[INFO] [stdout]  --> src/pool/semaphore.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Semphore`
[INFO] [stdout]  --> src/pool/semaphore.rs:4:31
[INFO] [stdout]   |
[INFO] [stdout] 4 | use mco::std::sync::{Blocker, Semphore};
[INFO] [stdout]   |                               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::error::Result`
[INFO] [stdout]  --> src/pool/semaphore.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::error::Result;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::Error`
[INFO] [stdout]  --> src/pool/semaphore.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::marker::PhantomData`
[INFO] [stdout]  --> src/utils/crud.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::marker::PhantomData;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::error::Result`
[INFO] [stdout]  --> src/pool/semaphore.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::error::Result;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::marker::PhantomData`
[INFO] [stdout]  --> src/utils/crud.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::marker::PhantomData;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DerefMut`, `Deref`
[INFO] [stdout]  --> src/utils/crud.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ops::{Deref, DerefMut};
[INFO] [stdout]   |                ^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mco::err`
[INFO] [stdout]  --> src/utils/crud.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use mco::err;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Database`, `HasArguments`
[INFO] [stdout]  --> src/utils/crud.rs:4:23
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::database::{Database, HasArguments};
[INFO] [stdout]   |                       ^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Encode`, `Executor`, `Query`
[INFO] [stdout]  --> src/utils/crud.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::{Encode, Executor, Query};
[INFO] [stdout]   |             ^^^^^^  ^^^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::arguments::Arguments`
[INFO] [stdout]  --> src/utils/crud.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::arguments::Arguments;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::scan::Scan`
[INFO] [stdout]  --> src/utils/crud.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::scan::Scan;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::types::Type`
[INFO] [stdout]  --> src/utils/crud.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use crate::types::Type;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mco::net::TcpStream`
[INFO] [stdout]  --> src/io/buf_stream.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use mco::net::TcpStream;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::error::Error`
[INFO] [stdout]  --> src/io/write_and_flush.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mco::net::TcpStream`
[INFO] [stdout]  --> src/io/write_and_flush.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use mco::net::TcpStream;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Debug`, `Display`
[INFO] [stdout]  --> src/io/chan_stream.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::{Debug, Display};
[INFO] [stdout]   |                ^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::mpsc::RecvError`
[INFO] [stdout]  --> src/io/chan_stream.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::sync::mpsc::RecvError;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::Error`
[INFO] [stdout]  --> src/io/chan_stream.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Database`
[INFO] [stdout]  --> src/connection.rs:1:23
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::database::{Database, HasStatementCache};
[INFO] [stdout]   |                       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Cow`
[INFO] [stdout]  --> src/statement.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::borrow::Cow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Cow`
[INFO] [stdout]  --> src/query.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::borrow::Cow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Pool`, `chan_stream`
[INFO] [stdout]  --> src/executor.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::{chan_stream, Pool};
[INFO] [stdout]   |             ^^^^^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Stream`, `TryStream`
[INFO] [stdout]  --> src/executor.rs:7:42
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::io::chan_stream::{ChanStream, Stream, TryStream};
[INFO] [stdout]   |                                          ^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DerefMut`, `Deref`
[INFO] [stdout]  --> src/utils/crud.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ops::{Deref, DerefMut};
[INFO] [stdout]   |                ^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mco::err`
[INFO] [stdout]  --> src/utils/crud.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use mco::err;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Database`, `HasArguments`
[INFO] [stdout]  --> src/utils/crud.rs:4:23
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::database::{Database, HasArguments};
[INFO] [stdout]   |                       ^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Encode`, `Executor`, `Query`
[INFO] [stdout]  --> src/utils/crud.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::{Encode, Executor, Query};
[INFO] [stdout]   |             ^^^^^^  ^^^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::arguments::Arguments`
[INFO] [stdout]  --> src/utils/crud.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::arguments::Arguments;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::scan::Scan`
[INFO] [stdout]  --> src/utils/crud.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::scan::Scan;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::types::Type`
[INFO] [stdout]  --> src/utils/crud.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use crate::types::Type;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mco::net::TcpStream`
[INFO] [stdout]  --> src/io/buf_stream.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use mco::net::TcpStream;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::error::Error`
[INFO] [stdout]  --> src/io/write_and_flush.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mco::net::TcpStream`
[INFO] [stdout]  --> src/io/write_and_flush.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use mco::net::TcpStream;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Debug`, `Display`
[INFO] [stdout]  --> src/io/chan_stream.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::{Debug, Display};
[INFO] [stdout]   |                ^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::mpsc::RecvError`
[INFO] [stdout]  --> src/io/chan_stream.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::sync::mpsc::RecvError;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::Error`
[INFO] [stdout]  --> src/io/chan_stream.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread::sleep`
[INFO] [stdout]    --> src/io/chan_stream.rs:187:9
[INFO] [stdout]     |
[INFO] [stdout] 187 |     use std::thread::sleep;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]    --> src/io/chan_stream.rs:188:9
[INFO] [stdout]     |
[INFO] [stdout] 188 |     use std::time::Duration;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mco::co`
[INFO] [stdout]    --> src/io/chan_stream.rs:189:9
[INFO] [stdout]     |
[INFO] [stdout] 189 |     use mco::co;
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TryStream`
[INFO] [stdout]    --> src/io/chan_stream.rs:190:54
[INFO] [stdout]     |
[INFO] [stdout] 190 |     use crate::io::chan_stream::{ChanStream, Stream, TryStream};
[INFO] [stdout]     |                                                      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Database`
[INFO] [stdout]  --> src/connection.rs:1:23
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::database::{Database, HasStatementCache};
[INFO] [stdout]   |                       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Cow`
[INFO] [stdout]  --> src/statement.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::borrow::Cow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Cow`
[INFO] [stdout]  --> src/query.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::borrow::Cow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Pool`, `chan_stream`
[INFO] [stdout]  --> src/executor.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::{chan_stream, Pool};
[INFO] [stdout]   |             ^^^^^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Stream`, `TryStream`
[INFO] [stdout]  --> src/executor.rs:7:42
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::io::chan_stream::{ChanStream, Stream, TryStream};
[INFO] [stdout]   |                                          ^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]  --> src/net/socket.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::path::Path;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Context`, `Poll`
[INFO] [stdout]  --> src/net/socket.rs:8:17
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::task::{Context, Poll};
[INFO] [stdout]   |                 ^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Context`, `Poll`
[INFO] [stdout]  --> src/net/tls/mod.rs:8:17
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::task::{Context, Poll};
[INFO] [stdout]   |                 ^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::error::Error`
[INFO] [stdout]   --> src/net/tls/mod.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::error::Error;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem::replace`
[INFO] [stdout]   --> src/net/tls/mod.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::mem::replace;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::decode::Decode`
[INFO] [stdout]   --> src/net/tls/mod.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use crate::decode::Decode;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::encode::Encode`
[INFO] [stdout]   --> src/net/tls/mod.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use crate::encode::Encode;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]  --> src/net/socket.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::path::Path;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Context`, `Poll`
[INFO] [stdout]  --> src/net/socket.rs:8:17
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::task::{Context, Poll};
[INFO] [stdout]   |                 ^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Context`, `Poll`
[INFO] [stdout]  --> src/net/tls/mod.rs:8:17
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::task::{Context, Poll};
[INFO] [stdout]   |                 ^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::error::Error`
[INFO] [stdout]   --> src/net/tls/mod.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::error::Error;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem::replace`
[INFO] [stdout]   --> src/net/tls/mod.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::mem::replace;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::decode::Decode`
[INFO] [stdout]   --> src/net/tls/mod.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use crate::decode::Decode;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::encode::Encode`
[INFO] [stdout]   --> src/net/tls/mod.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use crate::encode::Encode;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[inline]` is ignored on function prototypes
[INFO] [stdout]   --> src/net/socket.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 61 |     #[inline]
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[inline]` is ignored on function prototypes
[INFO] [stdout]   --> src/net/socket.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 61 |     #[inline]
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/net/socket.rs:4:32
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{ErrorKind, Read, Write};
[INFO] [stdout]   |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/net/socket.rs:4:26
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{ErrorKind, Read, Write};
[INFO] [stdout]   |                          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/pool/inner.rs:252:17
[INFO] [stdout]     |
[INFO] [stdout] 252 |                 _ => {
[INFO] [stdout]     |                 ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/utils/crud.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |         for x in Self::columns() {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/io/chan_stream.rs:67:17
[INFO] [stdout]    |
[INFO] [stdout] 67 |             Err(e) => { None }
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rows`
[INFO] [stdout]   --> src/executor.rs:68:30
[INFO] [stdout]    |
[INFO] [stdout] 68 |                 Either::Left(rows) => {
[INFO] [stdout]    |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_rows`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/pool/inner.rs:388:9
[INFO] [stdout]     |
[INFO] [stdout] 388 |         mut permit: PermitGuard<'a>,
[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 import: `Write`
[INFO] [stdout]  --> src/net/socket.rs:4:32
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{ErrorKind, Read, Write};
[INFO] [stdout]   |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/net/socket.rs:4:26
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{ErrorKind, Read, Write};
[INFO] [stdout]   |                          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/pool/inner.rs:252:17
[INFO] [stdout]     |
[INFO] [stdout] 252 |                 _ => {
[INFO] [stdout]     |                 ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `idx`
[INFO] [stdout]    --> src/pool/semaphore.rs:192:13
[INFO] [stdout]     |
[INFO] [stdout] 192 |         for idx in 0..total {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_idx`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/pool/semaphore.rs:193:23
[INFO] [stdout]     |
[INFO] [stdout] 193 |             if let Ok(v) = r.recv() {
[INFO] [stdout]     |                       ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `permit`
[INFO] [stdout]    --> src/pool/semaphore.rs:184:21
[INFO] [stdout]     |
[INFO] [stdout] 184 |                 let permit = b1.acquire();
[INFO] [stdout]     |                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_permit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/utils/crud.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |         for x in Self::columns() {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/io/chan_stream.rs:67:17
[INFO] [stdout]    |
[INFO] [stdout] 67 |             Err(e) => { None }
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rows`
[INFO] [stdout]   --> src/executor.rs:68:30
[INFO] [stdout]    |
[INFO] [stdout] 68 |                 Either::Left(rows) => {
[INFO] [stdout]    |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_rows`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/pool/inner.rs:388:9
[INFO] [stdout]     |
[INFO] [stdout] 388 |         mut permit: PermitGuard<'a>,
[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/query.rs:306:31
[INFO] [stdout]     |
[INFO] [stdout] 306 |     pub fn fetch<'c, E>(self, mut executor: E) -> ChanStream<O>
[INFO] [stdout]     |                               ----^^^^^^^^
[INFO] [stdout]     |                               |
[INFO] [stdout]     |                               help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/query.rs:349:35
[INFO] [stdout]     |
[INFO] [stdout] 349 |     pub fn fetch_all<'c, E>(self, mut executor: E) -> Result<Vec<O>, Error>
[INFO] [stdout]     |                                   ----^^^^^^^^
[INFO] [stdout]     |                                   |
[INFO] [stdout]     |                                   help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/query.rs:361:35
[INFO] [stdout]     |
[INFO] [stdout] 361 |     pub fn fetch_one<'c, E>(self, mut executor: E) -> Result<O, Error>
[INFO] [stdout]     |                                   ----^^^^^^^^
[INFO] [stdout]     |                                   |
[INFO] [stdout]     |                                   help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/query_as.rs:86:39
[INFO] [stdout]    |
[INFO] [stdout] 86 |     pub fn fetch<'e, 'c: 'e, E>(self, mut executor: E) -> ChanStream<O>
[INFO] [stdout]    |                                       ----^^^^^^^^
[INFO] [stdout]    |                                       |
[INFO] [stdout]    |                                       help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/query_as.rs:129:43
[INFO] [stdout]     |
[INFO] [stdout] 129 |     pub fn fetch_all<'e, 'c: 'e, E>(self, mut executor: E) -> Result<Vec<O>, Error>
[INFO] [stdout]     |                                           ----^^^^^^^^
[INFO] [stdout]     |                                           |
[INFO] [stdout]     |                                           help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/query_as.rs:143:43
[INFO] [stdout]     |
[INFO] [stdout] 143 |     pub fn fetch_one<'e, 'c: 'e, E>(self, mut  executor: E) -> Result<O, Error>
[INFO] [stdout]     |                                           -----^^^^^^^^
[INFO] [stdout]     |                                           |
[INFO] [stdout]     |                                           help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `blocker` is never read
[INFO] [stdout]   --> src/pool/semaphore.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct PermitGuard<'a> {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] 10 |     inner: &'a BoxSemaphore,
[INFO] [stdout] 11 |     blocker: Arc<mco::std::sync::Blocker>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `PollReadBuf` is never used
[INFO] [stdout]  --> src/net/mod.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | type PollReadBuf<'a> = Vec<u8>;
[INFO] [stdout]   |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/io/chan_stream.rs:105:21
[INFO] [stdout]     |
[INFO] [stdout] 105 |                     sender.send(Some(Ok($v)));
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/pool/executor.rs:32:17
[INFO] [stdout]     |
[INFO] [stdout] 32  |                 r#yield!(v);
[INFO] [stdout]     |                 ----------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `yield` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/io/chan_stream.rs:105:21
[INFO] [stdout]     |
[INFO] [stdout] 105 |                     sender.send(Some(Ok($v)));
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/pool/executor.rs:94:17
[INFO] [stdout]     |
[INFO] [stdout] 94  |                 r#yield!(v);
[INFO] [stdout]     |                 ----------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `yield` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/pool/semaphore.rs:52:13
[INFO] [stdout]    |
[INFO] [stdout] 52 |             b.park(None);
[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/pool/semaphore.rs:80:17
[INFO] [stdout]    |
[INFO] [stdout] 80 |                 w.unpark();
[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/io/chan_stream.rs:134:13
[INFO] [stdout]     |
[INFO] [stdout] 134 |             s.send(Some(Err(e)));
[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/io/chan_stream.rs:136:9
[INFO] [stdout]     |
[INFO] [stdout] 136 |         s.send(None);
[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/io/chan_stream.rs:105:21
[INFO] [stdout]     |
[INFO] [stdout] 105 |                     sender.send(Some(Ok($v)));
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 171 |                              r#yield!(v);
[INFO] [stdout]     |                              ----------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `yield` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/io/chan_stream.rs:118:22
[INFO] [stdout]     |
[INFO] [stdout] 118 |                      sender.send(None);
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 174 |                              end!();
[INFO] [stdout]     |                              ------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `end` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/io/chan_stream.rs:105:21
[INFO] [stdout]     |
[INFO] [stdout] 105 |                       sender.send(Some(Ok($v)));
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/query.rs:336:17
[INFO] [stdout]     |
[INFO] [stdout] 336 | /                 r#yield!(match v {
[INFO] [stdout] 337 | |                     Either::Left(v) => Either::Left(v),
[INFO] [stdout] 338 | |                     Either::Right(row) => {
[INFO] [stdout] 339 | |                         Either::Right((self.mapper)(row)?)
[INFO] [stdout] 340 | |                     }
[INFO] [stdout] 341 | |                 });
[INFO] [stdout]     | |__________________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `yield` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/io/chan_stream.rs:105:21
[INFO] [stdout]     |
[INFO] [stdout] 105 |                       sender.send(Some(Ok($v)));
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/query_as.rs:117:17
[INFO] [stdout]     |
[INFO] [stdout] 117 | /                 r#yield!(match v {
[INFO] [stdout] 118 | |                     Either::Left(v) => Either::Left(v),
[INFO] [stdout] 119 | |                     Either::Right(row) => Either::Right(O::from_row(&row)?),
[INFO] [stdout] 120 | |                 });
[INFO] [stdout]     | |__________________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `yield` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 64 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/query.rs:306:31
[INFO] [stdout]     |
[INFO] [stdout] 306 |     pub fn fetch<'c, E>(self, mut executor: E) -> ChanStream<O>
[INFO] [stdout]     |                               ----^^^^^^^^
[INFO] [stdout]     |                               |
[INFO] [stdout]     |                               help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/query.rs:349:35
[INFO] [stdout]     |
[INFO] [stdout] 349 |     pub fn fetch_all<'c, E>(self, mut executor: E) -> Result<Vec<O>, Error>
[INFO] [stdout]     |                                   ----^^^^^^^^
[INFO] [stdout]     |                                   |
[INFO] [stdout]     |                                   help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/query.rs:361:35
[INFO] [stdout]     |
[INFO] [stdout] 361 |     pub fn fetch_one<'c, E>(self, mut executor: E) -> Result<O, Error>
[INFO] [stdout]     |                                   ----^^^^^^^^
[INFO] [stdout]     |                                   |
[INFO] [stdout]     |                                   help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/query_as.rs:86:39
[INFO] [stdout]    |
[INFO] [stdout] 86 |     pub fn fetch<'e, 'c: 'e, E>(self, mut executor: E) -> ChanStream<O>
[INFO] [stdout]    |                                       ----^^^^^^^^
[INFO] [stdout]    |                                       |
[INFO] [stdout]    |                                       help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/query_as.rs:129:43
[INFO] [stdout]     |
[INFO] [stdout] 129 |     pub fn fetch_all<'e, 'c: 'e, E>(self, mut executor: E) -> Result<Vec<O>, Error>
[INFO] [stdout]     |                                           ----^^^^^^^^
[INFO] [stdout]     |                                           |
[INFO] [stdout]     |                                           help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/query_as.rs:143:43
[INFO] [stdout]     |
[INFO] [stdout] 143 |     pub fn fetch_one<'e, 'c: 'e, E>(self, mut  executor: E) -> Result<O, Error>
[INFO] [stdout]     |                                           -----^^^^^^^^
[INFO] [stdout]     |                                           |
[INFO] [stdout]     |                                           help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `blocker` is never read
[INFO] [stdout]   --> src/pool/semaphore.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct PermitGuard<'a> {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] 10 |     inner: &'a BoxSemaphore,
[INFO] [stdout] 11 |     blocker: Arc<mco::std::sync::Blocker>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `PollReadBuf` is never used
[INFO] [stdout]  --> src/net/mod.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | type PollReadBuf<'a> = Vec<u8>;
[INFO] [stdout]   |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/io/chan_stream.rs:105:21
[INFO] [stdout]     |
[INFO] [stdout] 105 |                     sender.send(Some(Ok($v)));
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/pool/executor.rs:32:17
[INFO] [stdout]     |
[INFO] [stdout] 32  |                 r#yield!(v);
[INFO] [stdout]     |                 ----------- in this macro invocation
[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]     = note: this warning originates in the macro `yield` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/io/chan_stream.rs:105:21
[INFO] [stdout]     |
[INFO] [stdout] 105 |                     sender.send(Some(Ok($v)));
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/pool/executor.rs:94:17
[INFO] [stdout]     |
[INFO] [stdout] 94  |                 r#yield!(v);
[INFO] [stdout]     |                 ----------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `yield` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/pool/semaphore.rs:52:13
[INFO] [stdout]    |
[INFO] [stdout] 52 |             b.park(None);
[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/pool/semaphore.rs:80:17
[INFO] [stdout]    |
[INFO] [stdout] 80 |                 w.unpark();
[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/pool/semaphore.rs:186:17
[INFO] [stdout]     |
[INFO] [stdout] 186 |                 s1.send(1);
[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/io/chan_stream.rs:134:13
[INFO] [stdout]     |
[INFO] [stdout] 134 |             s.send(Some(Err(e)));
[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/io/chan_stream.rs:136:9
[INFO] [stdout]     |
[INFO] [stdout] 136 |         s.send(None);
[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/io/chan_stream.rs:105:21
[INFO] [stdout]     |
[INFO] [stdout] 105 |                     sender.send(Some(Ok($v)));
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 171 |                              r#yield!(v);
[INFO] [stdout]     |                              ----------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `yield` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/io/chan_stream.rs:118:22
[INFO] [stdout]     |
[INFO] [stdout] 118 |                      sender.send(None);
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 174 |                              end!();
[INFO] [stdout]     |                              ------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `end` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/io/chan_stream.rs:105:21
[INFO] [stdout]     |
[INFO] [stdout] 105 |                     sender.send(Some(Ok($v)));
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 196 |               r#yield!(1);
[INFO] [stdout]     |               ----------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `yield` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/io/chan_stream.rs:105:21
[INFO] [stdout]     |
[INFO] [stdout] 105 |                     sender.send(Some(Ok($v)));
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 208 |              r#yield!(1);
[INFO] [stdout]     |              ----------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `yield` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/io/chan_stream.rs:105:21
[INFO] [stdout]     |
[INFO] [stdout] 105 |                     sender.send(Some(Ok($v)));
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 209 |              r#yield!(2);
[INFO] [stdout]     |              ----------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `yield` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/io/chan_stream.rs:105:21
[INFO] [stdout]     |
[INFO] [stdout] 105 |                     sender.send(Some(Ok($v)));
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 210 |              r#yield!(3);
[INFO] [stdout]     |              ----------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `yield` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/io/chan_stream.rs:105:21
[INFO] [stdout]     |
[INFO] [stdout] 105 |                       sender.send(Some(Ok($v)));
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/query.rs:336:17
[INFO] [stdout]     |
[INFO] [stdout] 336 | /                 r#yield!(match v {
[INFO] [stdout] 337 | |                     Either::Left(v) => Either::Left(v),
[INFO] [stdout] 338 | |                     Either::Right(row) => {
[INFO] [stdout] 339 | |                         Either::Right((self.mapper)(row)?)
[INFO] [stdout] 340 | |                     }
[INFO] [stdout] 341 | |                 });
[INFO] [stdout]     | |__________________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `yield` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/io/chan_stream.rs:105:21
[INFO] [stdout]     |
[INFO] [stdout] 105 |                       sender.send(Some(Ok($v)));
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/query_as.rs:117:17
[INFO] [stdout]     |
[INFO] [stdout] 117 | /                 r#yield!(match v {
[INFO] [stdout] 118 | |                     Either::Left(v) => Either::Left(v),
[INFO] [stdout] 119 | |                     Either::Right(row) => Either::Right(O::from_row(&row)?),
[INFO] [stdout] 120 | |                 });
[INFO] [stdout]     | |__________________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `yield` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 76 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 52.30s
[INFO] running `Command { std: "docker" "inspect" "9b5254245efe9ac8bbbfdc1b3c4cc95e064324f0d1fc15eb41ed26d8853d2b8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b5254245efe9ac8bbbfdc1b3c4cc95e064324f0d1fc15eb41ed26d8853d2b8b", kill_on_drop: false }`
[INFO] [stdout] 9b5254245efe9ac8bbbfdc1b3c4cc95e064324f0d1fc15eb41ed26d8853d2b8b