[INFO] fetching crate dbi 0.3.0...
[INFO] testing dbi-0.3.0 against 1.47.0 for beta-1.48-1
[INFO] extracting crate dbi 0.3.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate dbi 0.3.0 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dbi 0.3.0
[INFO] finished tweaking crates.io crate dbi 0.3.0
[INFO] tweaked toml for crates.io crate dbi 0.3.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7edb2c643e62dd140f4d09c7c0ea88fcdd33e3c017232dd7c021fe85ad48991a
[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" "7edb2c643e62dd140f4d09c7c0ea88fcdd33e3c017232dd7c021fe85ad48991a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7edb2c643e62dd140f4d09c7c0ea88fcdd33e3c017232dd7c021fe85ad48991a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7edb2c643e62dd140f4d09c7c0ea88fcdd33e3c017232dd7c021fe85ad48991a", kill_on_drop: false }`
[INFO] [stdout] 7edb2c643e62dd140f4d09c7c0ea88fcdd33e3c017232dd7c021fe85ad48991a
[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=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 56a457dc2bf3ab86974497fc5dc92fd5246ac625106bb144970aae5c4a8863ea
[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" "56a457dc2bf3ab86974497fc5dc92fd5246ac625106bb144970aae5c4a8863ea", kill_on_drop: false }`
[INFO] [stderr]    Compiling bit-vec v0.5.1
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling uuid v0.6.5
[INFO] [stderr]    Compiling serde_json v1.0.59
[INFO] [stderr]    Compiling dbi-macros v0.3.0
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling checked v0.5.0
[INFO] [stderr]    Compiling atoi v0.2.4
[INFO] [stderr]    Compiling tokio-tcp v0.1.4
[INFO] [stderr]    Compiling tokio-udp v0.1.6
[INFO] [stderr]    Compiling tokio-uds v0.2.7
[INFO] [stderr]    Compiling tokio-fs v0.1.7
[INFO] [stderr]    Compiling tokio v0.1.22
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling mysql_common v0.9.2
[INFO] [stderr]    Compiling mysql_async v0.15.1
[INFO] [stderr]    Compiling dbi v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/mysql.rs:7:31
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub type BoxedFuture<T> = Box<futures::Future<Item=T, Error=::my::errors::Error> + Send>;
[INFO] [stdout]   |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn futures::Future<Item=T, Error=::my::errors::Error> + Send`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::Connection`
[INFO] [stdout]   --> src/mysql.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     use super::Connection;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::Future`
[INFO] [stdout]   --> src/lib.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 | use futures::Future;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `futures::stream::iter`: implementation moved to `iter_ok` and `iter_result`
[INFO] [stdout]   --> src/mysql.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |             futures::stream::iter(val)
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/mysql.rs:27:63
[INFO] [stdout]    |
[INFO] [stdout] 27 |             res.reduce_and_drop(crate::ResultSet::None, move |mut acc, row| {
[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/mysql.rs:33:48
[INFO] [stdout]    |
[INFO] [stdout] 33 |                 .fold(crate::ResultSet::None, |mut acc, val| {
[INFO] [stdout]    |                                                ----^^^
[INFO] [stdout]    |                                                |
[INFO] [stdout]    |                                                help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::my::prelude`
[INFO] [stdout]   --> src/mysql.rs:22:13
[INFO] [stdout]    |
[INFO] [stdout] 22 |         use ::my::prelude::*;
[INFO] [stdout]    |             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stream`
[INFO] [stdout]   --> src/mysql.rs:47:31
[INFO] [stdout]    |
[INFO] [stdout] 47 |         use futures::{Future, Stream};
[INFO] [stdout]    |                               ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::my::prelude`
[INFO] [stdout]   --> src/mysql.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |         use ::my::prelude::*;
[INFO] [stdout]    |             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stream`
[INFO] [stdout]   --> src/mysql.rs:74:31
[INFO] [stdout]    |
[INFO] [stdout] 74 |         use futures::{Future, Stream};
[INFO] [stdout]    |                               ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::my::prelude`
[INFO] [stdout]   --> src/mysql.rs:75:13
[INFO] [stdout]    |
[INFO] [stdout] 75 |         use ::my::prelude::*;
[INFO] [stdout]    |             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `res`
[INFO] [stdout]   --> src/mysql.rs:79:17
[INFO] [stdout]    |
[INFO] [stdout] 79 |         }).map(|res| {
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.90s
[INFO] running `Command { std: "docker" "inspect" "56a457dc2bf3ab86974497fc5dc92fd5246ac625106bb144970aae5c4a8863ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56a457dc2bf3ab86974497fc5dc92fd5246ac625106bb144970aae5c4a8863ea", kill_on_drop: false }`
[INFO] [stdout] 56a457dc2bf3ab86974497fc5dc92fd5246ac625106bb144970aae5c4a8863ea
[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=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 88d1208728e652a5c8020eef4d6f6fcc1bb6bdea7d61e240653f0e60c1dcb6da
[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" "88d1208728e652a5c8020eef4d6f6fcc1bb6bdea7d61e240653f0e60c1dcb6da", kill_on_drop: false }`
[INFO] [stderr]    Compiling dbi v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/mysql.rs:7:31
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub type BoxedFuture<T> = Box<futures::Future<Item=T, Error=::my::errors::Error> + Send>;
[INFO] [stdout]   |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn futures::Future<Item=T, Error=::my::errors::Error> + Send`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::Connection`
[INFO] [stdout]   --> src/mysql.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     use super::Connection;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::Future`
[INFO] [stdout]   --> src/lib.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 | use futures::Future;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `futures::stream::iter`: implementation moved to `iter_ok` and `iter_result`
[INFO] [stdout]   --> src/mysql.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |             futures::stream::iter(val)
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/mysql.rs:27:63
[INFO] [stdout]    |
[INFO] [stdout] 27 |             res.reduce_and_drop(crate::ResultSet::None, move |mut acc, row| {
[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/mysql.rs:33:48
[INFO] [stdout]    |
[INFO] [stdout] 33 |                 .fold(crate::ResultSet::None, |mut acc, val| {
[INFO] [stdout]    |                                                ----^^^
[INFO] [stdout]    |                                                |
[INFO] [stdout]    |                                                help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::my::prelude`
[INFO] [stdout]   --> src/mysql.rs:22:13
[INFO] [stdout]    |
[INFO] [stdout] 22 |         use ::my::prelude::*;
[INFO] [stdout]    |             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stream`
[INFO] [stdout]   --> src/mysql.rs:47:31
[INFO] [stdout]    |
[INFO] [stdout] 47 |         use futures::{Future, Stream};
[INFO] [stdout]    |                               ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::my::prelude`
[INFO] [stdout]   --> src/mysql.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |         use ::my::prelude::*;
[INFO] [stdout]    |             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stream`
[INFO] [stdout]   --> src/mysql.rs:74:31
[INFO] [stdout]    |
[INFO] [stdout] 74 |         use futures::{Future, Stream};
[INFO] [stdout]    |                               ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::my::prelude`
[INFO] [stdout]   --> src/mysql.rs:75:13
[INFO] [stdout]    |
[INFO] [stdout] 75 |         use ::my::prelude::*;
[INFO] [stdout]    |             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `res`
[INFO] [stdout]   --> src/mysql.rs:79:17
[INFO] [stdout]    |
[INFO] [stdout] 79 |         }).map(|res| {
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: environment variable `DB_USERNAME` not defined
[INFO] [stdout]   --> examples/simple.rs:43:37
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let (username, password, db) = (env!("DB_USERNAME"), env!("DB_PASSWORD"), env!("DB_NAME"));
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: environment variable `DB_PASSWORD` not defined
[INFO] [stdout]   --> examples/simple.rs:43:58
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let (username, password, db) = (env!("DB_USERNAME"), env!("DB_PASSWORD"), env!("DB_NAME"));
[INFO] [stdout]    |                                                          ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: environment variable `DB_NAME` not defined
[INFO] [stdout]   --> examples/simple.rs:43:79
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let (username, password, db) = (env!("DB_USERNAME"), env!("DB_PASSWORD"), env!("DB_NAME"));
[INFO] [stdout]    |                                                                               ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Arc`
[INFO] [stdout]  --> examples/simple.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/mysql.rs:7:31
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub type BoxedFuture<T> = Box<futures::Future<Item=T, Error=::my::errors::Error> + Send>;
[INFO] [stdout]   |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn futures::Future<Item=T, Error=::my::errors::Error> + Send`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dbi`.
[INFO] [stdout] warning: unused import: `super::Connection`
[INFO] [stdout]   --> src/mysql.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     use super::Connection;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] warning: unused import: `futures::Future`
[INFO] [stdout]   --> src/lib.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 | use futures::Future;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: use of deprecated function `futures::stream::iter`: implementation moved to `iter_ok` and `iter_result`
[INFO] [stdout]   --> src/mysql.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |             futures::stream::iter(val)
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/mysql.rs:27:63
[INFO] [stdout]    |
[INFO] [stdout] 27 |             res.reduce_and_drop(crate::ResultSet::None, move |mut acc, row| {
[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/mysql.rs:33:48
[INFO] [stdout]    |
[INFO] [stdout] 33 |                 .fold(crate::ResultSet::None, |mut acc, val| {
[INFO] [stdout]    |                                                ----^^^
[INFO] [stdout]    |                                                |
[INFO] [stdout]    |                                                help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::my::prelude`
[INFO] [stdout]   --> src/mysql.rs:22:13
[INFO] [stdout]    |
[INFO] [stdout] 22 |         use ::my::prelude::*;
[INFO] [stdout]    |             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stream`
[INFO] [stdout]   --> src/mysql.rs:47:31
[INFO] [stdout]    |
[INFO] [stdout] 47 |         use futures::{Future, Stream};
[INFO] [stdout]    |                               ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::my::prelude`
[INFO] [stdout]   --> src/mysql.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |         use ::my::prelude::*;
[INFO] [stdout]    |             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stream`
[INFO] [stdout]   --> src/mysql.rs:74:31
[INFO] [stdout]    |
[INFO] [stdout] 74 |         use futures::{Future, Stream};
[INFO] [stdout]    |                               ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::my::prelude`
[INFO] [stdout]   --> src/mysql.rs:75:13
[INFO] [stdout]    |
[INFO] [stdout] 75 |         use ::my::prelude::*;
[INFO] [stdout]    |             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `res`
[INFO] [stdout]   --> src/mysql.rs:79:17
[INFO] [stdout]    |
[INFO] [stdout] 79 |         }).map(|res| {
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "88d1208728e652a5c8020eef4d6f6fcc1bb6bdea7d61e240653f0e60c1dcb6da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88d1208728e652a5c8020eef4d6f6fcc1bb6bdea7d61e240653f0e60c1dcb6da", kill_on_drop: false }`
[INFO] [stdout] 88d1208728e652a5c8020eef4d6f6fcc1bb6bdea7d61e240653f0e60c1dcb6da
