[INFO] fetching crate renegades_sqlite 0.1.3...
[INFO] checking renegades_sqlite-0.1.3 against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] extracting crate renegades_sqlite 0.1.3 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate renegades_sqlite 0.1.3 on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate renegades_sqlite 0.1.3
[INFO] finished tweaking crates.io crate renegades_sqlite 0.1.3
[INFO] tweaked toml for crates.io crate renegades_sqlite 0.1.3 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8511d43ac76694df10e345caf1e5de8675999bbadfd7deaac193bb87493b1d32
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8511d43ac76694df10e345caf1e5de8675999bbadfd7deaac193bb87493b1d32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8511d43ac76694df10e345caf1e5de8675999bbadfd7deaac193bb87493b1d32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8511d43ac76694df10e345caf1e5de8675999bbadfd7deaac193bb87493b1d32", kill_on_drop: false }`
[INFO] [stdout] 8511d43ac76694df10e345caf1e5de8675999bbadfd7deaac193bb87493b1d32
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef366c4619cb6d40a4c4f99caf0c0da19663f5fbea1693b343be29b149d8c263
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ef366c4619cb6d40a4c4f99caf0c0da19663f5fbea1693b343be29b149d8c263", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]     Checking random v0.12.2
[INFO] [stderr]     Checking temporary v0.6.3
[INFO] [stderr]    Compiling sqlite3-src v0.2.12
[INFO] [stderr]     Checking sqlite3-sys v0.12.0
[INFO] [stderr]     Checking renegades_sqlite v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/connection.rs:11:31
[INFO] [stdout]    |
[INFO] [stdout] 11 |     busy_callback: Option<Box<FnMut(usize) -> bool>>,
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(usize) -> bool`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/connection.rs:95:9
[INFO] [stdout]    |
[INFO] [stdout] 95 |         try!(self.remove_busy_handler());
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/cursor.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |         try!(self.statement.reset());
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/cursor.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |             try!(self.statement.bind(i + 1, value));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/cursor.rs:35:35
[INFO] [stdout]    |
[INFO] [stdout] 35 |                 self.state = Some(try!(self.statement.next()));
[INFO] [stdout]    |                                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/cursor.rs:44:38
[INFO] [stdout]    |
[INFO] [stdout] 44 | ...                   *value = try!(self.statement.read(i));
[INFO] [stdout]    |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/cursor.rs:47:38
[INFO] [stdout]    |
[INFO] [stdout] 47 | ...                   *value = try!(self.statement.read(i));
[INFO] [stdout]    |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/cursor.rs:50:38
[INFO] [stdout]    |
[INFO] [stdout] 50 | ...                   *value = try!(self.statement.read(i));
[INFO] [stdout]    |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/cursor.rs:53:38
[INFO] [stdout]    |
[INFO] [stdout] 53 | ...                   *value = try!(self.statement.read(i));
[INFO] [stdout]    |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/cursor.rs:64:33
[INFO] [stdout]    |
[INFO] [stdout] 64 |                     values.push(try!(self.statement.read(i)));
[INFO] [stdout]    |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/cursor.rs:69:27
[INFO] [stdout]    |
[INFO] [stdout] 69 |         self.state = Some(try!(self.statement.next()));
[INFO] [stdout]    |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/statement.rs:32:19
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn bind(self, &mut Statement, usize) -> Result<()>;
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut Statement`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/statement.rs:32:35
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn bind(self, &mut Statement, usize) -> Result<()>;
[INFO] [stdout]    |                                   ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: usize`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/statement.rs:40:13
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn read(&Statement, usize) -> Result<Self>;
[INFO] [stdout]    |             ^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Statement`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/statement.rs:40:25
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn read(&Statement, usize) -> Result<Self>;
[INFO] [stdout]    |                         ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: usize`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/statement.rs:235:43
[INFO] [stdout]     |
[INFO] [stdout] 235 |             Type::Binary => Value::Binary(try!(Readable::read(statement, i))),
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/statement.rs:236:41
[INFO] [stdout]     |
[INFO] [stdout] 236 |             Type::Float => Value::Float(try!(Readable::read(statement, i))),
[INFO] [stdout]     |                                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/statement.rs:237:45
[INFO] [stdout]     |
[INFO] [stdout] 237 |             Type::Integer => Value::Integer(try!(Readable::read(statement, i))),
[INFO] [stdout]     |                                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/statement.rs:238:43
[INFO] [stdout]     |
[INFO] [stdout] 238 |             Type::String => Value::String(try!(Readable::read(statement, i))),
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/connection.rs:11:31
[INFO] [stdout]    |
[INFO] [stdout] 11 |     busy_callback: Option<Box<FnMut(usize) -> bool>>,
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(usize) -> bool`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/connection.rs:95:9
[INFO] [stdout]    |
[INFO] [stdout] 95 |         try!(self.remove_busy_handler());
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/cursor.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |         try!(self.statement.reset());
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/cursor.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |             try!(self.statement.bind(i + 1, value));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/cursor.rs:35:35
[INFO] [stdout]    |
[INFO] [stdout] 35 |                 self.state = Some(try!(self.statement.next()));
[INFO] [stdout]    |                                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/cursor.rs:44:38
[INFO] [stdout]    |
[INFO] [stdout] 44 | ...                   *value = try!(self.statement.read(i));
[INFO] [stdout]    |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/cursor.rs:47:38
[INFO] [stdout]    |
[INFO] [stdout] 47 | ...                   *value = try!(self.statement.read(i));
[INFO] [stdout]    |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/cursor.rs:50:38
[INFO] [stdout]    |
[INFO] [stdout] 50 | ...                   *value = try!(self.statement.read(i));
[INFO] [stdout]    |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/cursor.rs:53:38
[INFO] [stdout]    |
[INFO] [stdout] 53 | ...                   *value = try!(self.statement.read(i));
[INFO] [stdout]    |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/cursor.rs:64:33
[INFO] [stdout]    |
[INFO] [stdout] 64 |                     values.push(try!(self.statement.read(i)));
[INFO] [stdout]    |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/cursor.rs:69:27
[INFO] [stdout]    |
[INFO] [stdout] 69 |         self.state = Some(try!(self.statement.next()));
[INFO] [stdout]    |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/statement.rs:32:19
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn bind(self, &mut Statement, usize) -> Result<()>;
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut Statement`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/statement.rs:32:35
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn bind(self, &mut Statement, usize) -> Result<()>;
[INFO] [stdout]    |                                   ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: usize`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/statement.rs:40:13
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn read(&Statement, usize) -> Result<Self>;
[INFO] [stdout]    |             ^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Statement`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/statement.rs:40:25
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn read(&Statement, usize) -> Result<Self>;
[INFO] [stdout]    |                         ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: usize`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/statement.rs:235:43
[INFO] [stdout]     |
[INFO] [stdout] 235 |             Type::Binary => Value::Binary(try!(Readable::read(statement, i))),
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/statement.rs:236:41
[INFO] [stdout]     |
[INFO] [stdout] 236 |             Type::Float => Value::Float(try!(Readable::read(statement, i))),
[INFO] [stdout]     |                                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/statement.rs:237:45
[INFO] [stdout]     |
[INFO] [stdout] 237 |             Type::Integer => Value::Integer(try!(Readable::read(statement, i))),
[INFO] [stdout]     |                                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/statement.rs:238:43
[INFO] [stdout]     |
[INFO] [stdout] 238 |             Type::String => Value::String(try!(Readable::read(statement, i))),
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `busy_callback`
[INFO] [stdout]   --> src/connection.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     busy_callback: Option<Box<FnMut(usize) -> bool>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `busy_callback`
[INFO] [stdout]   --> src/connection.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     busy_callback: Option<Box<FnMut(usize) -> bool>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.33s
[INFO] running `Command { std: "docker" "inspect" "ef366c4619cb6d40a4c4f99caf0c0da19663f5fbea1693b343be29b149d8c263", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef366c4619cb6d40a4c4f99caf0c0da19663f5fbea1693b343be29b149d8c263", kill_on_drop: false }`
[INFO] [stdout] ef366c4619cb6d40a4c4f99caf0c0da19663f5fbea1693b343be29b149d8c263