[INFO] cloning repository https://github.com/PixelJuice/docket
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/PixelJuice/docket" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPixelJuice%2Fdocket", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPixelJuice%2Fdocket'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1044f65e4ed8c63f0ea2a90ac94894160990c385
[INFO] testing PixelJuice/docket against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPixelJuice%2Fdocket" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/PixelJuice/docket on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/PixelJuice/docket
[INFO] finished tweaking git repo https://github.com/PixelJuice/docket
[INFO] tweaked toml for git repo https://github.com/PixelJuice/docket written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/PixelJuice/docket already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3c94a452a4d423955085d6fa7fbac780b4ce9cd94752a8b137a943c04d2db7c3
[INFO] running `Command { std: "docker" "start" "-a" "3c94a452a4d423955085d6fa7fbac780b4ce9cd94752a8b137a943c04d2db7c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3c94a452a4d423955085d6fa7fbac780b4ce9cd94752a8b137a943c04d2db7c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c94a452a4d423955085d6fa7fbac780b4ce9cd94752a8b137a943c04d2db7c3", kill_on_drop: false }`
[INFO] [stdout] 3c94a452a4d423955085d6fa7fbac780b4ce9cd94752a8b137a943c04d2db7c3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a9c8cab0963620e1c64738ba31614c77a3281d7f64becc5881455109ef0681f8
[INFO] running `Command { std: "docker" "start" "-a" "a9c8cab0963620e1c64738ba31614c77a3281d7f64becc5881455109ef0681f8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.91
[INFO] [stderr]    Compiling cassowary v0.3.0
[INFO] [stderr]    Compiling regex-syntax v0.6.23
[INFO] [stderr]    Compiling instant v0.1.9
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling mio v0.7.11
[INFO] [stderr]    Compiling signal-hook-registry v1.3.0
[INFO] [stderr]    Compiling dirs-sys v0.3.5
[INFO] [stderr]    Compiling directories v3.0.1
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling signal-hook v0.1.17
[INFO] [stderr]    Compiling crossterm v0.18.2
[INFO] [stderr]    Compiling crossterm v0.19.0
[INFO] [stderr]    Compiling regex v1.4.5
[INFO] [stderr]    Compiling tui v0.14.0
[INFO] [stderr]    Compiling docket v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Rect`
[INFO] [stdout]  --> src/main.rs:4:50
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tui::layout::{Constraint, Direction, Layout, Rect};
[INFO] [stdout]   |                                                  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Color`, `Modifier`, `Style`
[INFO] [stdout]  --> src/main.rs:5:18
[INFO] [stdout]   |
[INFO] [stdout] 5 | use tui::style::{Color, Modifier, Style};
[INFO] [stdout]   |                  ^^^^^  ^^^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Block`, `BorderType`, `Borders`, `ListItem`
[INFO] [stdout]  --> src/main.rs:7:20
[INFO] [stdout]   |
[INFO] [stdout] 7 | use tui::widgets::{Block, Borders, List, ListItem, ListState, Paragraph,BorderType};
[INFO] [stdout]   |                    ^^^^^  ^^^^^^^        ^^^^^^^^                       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ListItem`
[INFO] [stdout]  --> src/list_util.rs:2:20
[INFO] [stdout]   |
[INFO] [stdout] 2 | use tui::widgets::{ListItem, ListState};
[INFO] [stdout]   |                    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::todo_txt::TodoItem`
[INFO] [stdout]  --> src/list_view.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use crate::todo_txt::TodoItem;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Result`
[INFO] [stdout]  --> src/help_view.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Result,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Rect`
[INFO] [stdout]  --> src/new_view.rs:1:50
[INFO] [stdout]   |
[INFO] [stdout] 1 | use tui::layout::{Constraint, Direction, Layout, Rect};
[INFO] [stdout]   |                                                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Modifier`
[INFO] [stdout]  --> src/new_view.rs:2:25
[INFO] [stdout]   |
[INFO] [stdout] 2 | use tui::style::{Color, Modifier, Style};
[INFO] [stdout]   |                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ListItem`, `ListState`, `List`
[INFO] [stdout]  --> src/new_view.rs:3:36
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tui::widgets::{Block, Borders, List, ListItem, ListState, Paragraph,BorderType, Clear};
[INFO] [stdout]   |                                    ^^^^  ^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/todo_txt.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |         &self.content.sort_by(|a, b| b.not_done.cmp(&a.not_done));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let _ = &self.content.sort_by(|a, b| b.not_done.cmp(&a.not_done));
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.77s
[INFO] running `Command { std: "docker" "inspect" "a9c8cab0963620e1c64738ba31614c77a3281d7f64becc5881455109ef0681f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9c8cab0963620e1c64738ba31614c77a3281d7f64becc5881455109ef0681f8", kill_on_drop: false }`
[INFO] [stdout] a9c8cab0963620e1c64738ba31614c77a3281d7f64becc5881455109ef0681f8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f4cd1790bc90967d83164c74d082165f787d463ee5c63012f87aca032409e2a0
[INFO] running `Command { std: "docker" "start" "-a" "f4cd1790bc90967d83164c74d082165f787d463ee5c63012f87aca032409e2a0", kill_on_drop: false }`
[INFO] [stderr]    Compiling docket v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Rect`
[INFO] [stdout]  --> src/main.rs:4:50
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tui::layout::{Constraint, Direction, Layout, Rect};
[INFO] [stdout]   |                                                  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Color`, `Modifier`, `Style`
[INFO] [stdout]  --> src/main.rs:5:18
[INFO] [stdout]   |
[INFO] [stdout] 5 | use tui::style::{Color, Modifier, Style};
[INFO] [stdout]   |                  ^^^^^  ^^^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Block`, `BorderType`, `Borders`, `ListItem`
[INFO] [stdout]  --> src/main.rs:7:20
[INFO] [stdout]   |
[INFO] [stdout] 7 | use tui::widgets::{Block, Borders, List, ListItem, ListState, Paragraph,BorderType};
[INFO] [stdout]   |                    ^^^^^  ^^^^^^^        ^^^^^^^^                       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ListItem`
[INFO] [stdout]  --> src/list_util.rs:2:20
[INFO] [stdout]   |
[INFO] [stdout] 2 | use tui::widgets::{ListItem, ListState};
[INFO] [stdout]   |                    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::todo_txt::TodoItem`
[INFO] [stdout]  --> src/list_view.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use crate::todo_txt::TodoItem;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Result`
[INFO] [stdout]  --> src/help_view.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Result,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Rect`
[INFO] [stdout]  --> src/new_view.rs:1:50
[INFO] [stdout]   |
[INFO] [stdout] 1 | use tui::layout::{Constraint, Direction, Layout, Rect};
[INFO] [stdout]   |                                                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Modifier`
[INFO] [stdout]  --> src/new_view.rs:2:25
[INFO] [stdout]   |
[INFO] [stdout] 2 | use tui::style::{Color, Modifier, Style};
[INFO] [stdout]   |                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ListItem`, `ListState`, `List`
[INFO] [stdout]  --> src/new_view.rs:3:36
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tui::widgets::{Block, Borders, List, ListItem, ListState, Paragraph,BorderType, Clear};
[INFO] [stdout]   |                                    ^^^^  ^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/todo_txt.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |         &self.content.sort_by(|a, b| b.not_done.cmp(&a.not_done));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let _ = &self.content.sort_by(|a, b| b.not_done.cmp(&a.not_done));
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.28s
[INFO] running `Command { std: "docker" "inspect" "f4cd1790bc90967d83164c74d082165f787d463ee5c63012f87aca032409e2a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4cd1790bc90967d83164c74d082165f787d463ee5c63012f87aca032409e2a0", kill_on_drop: false }`
[INFO] [stdout] f4cd1790bc90967d83164c74d082165f787d463ee5c63012f87aca032409e2a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 60adf6fe03c85a559153b1d5fe61161cd3438eefea7e8db6aa23c378243b45b2
[INFO] running `Command { std: "docker" "start" "-a" "60adf6fe03c85a559153b1d5fe61161cd3438eefea7e8db6aa23c378243b45b2", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `Rect`
[INFO] [stderr]  --> src/main.rs:4:50
[INFO] [stderr]   |
[INFO] [stderr] 4 | use tui::layout::{Constraint, Direction, Layout, Rect};
[INFO] [stderr]   |                                                  ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Color`, `Modifier`, `Style`
[INFO] [stderr]  --> src/main.rs:5:18
[INFO] [stderr]   |
[INFO] [stderr] 5 | use tui::style::{Color, Modifier, Style};
[INFO] [stderr]   |                  ^^^^^  ^^^^^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Block`, `BorderType`, `Borders`, `ListItem`
[INFO] [stderr]  --> src/main.rs:7:20
[INFO] [stderr]   |
[INFO] [stderr] 7 | use tui::widgets::{Block, Borders, List, ListItem, ListState, Paragraph,BorderType};
[INFO] [stderr]   |                    ^^^^^  ^^^^^^^        ^^^^^^^^                       ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ListItem`
[INFO] [stderr]  --> src/list_util.rs:2:20
[INFO] [stderr]   |
[INFO] [stderr] 2 | use tui::widgets::{ListItem, ListState};
[INFO] [stderr]   |                    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::todo_txt::TodoItem`
[INFO] [stderr]  --> src/list_view.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use crate::todo_txt::TodoItem;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Result`
[INFO] [stderr]  --> src/help_view.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     Result,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Rect`
[INFO] [stderr]  --> src/new_view.rs:1:50
[INFO] [stderr]   |
[INFO] [stderr] 1 | use tui::layout::{Constraint, Direction, Layout, Rect};
[INFO] [stderr]   |                                                  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Modifier`
[INFO] [stderr]  --> src/new_view.rs:2:25
[INFO] [stderr]   |
[INFO] [stderr] 2 | use tui::style::{Color, Modifier, Style};
[INFO] [stderr]   |                         ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `ListItem`, `ListState`, `List`
[INFO] [stderr]  --> src/new_view.rs:3:36
[INFO] [stderr]   |
[INFO] [stderr] 3 | use tui::widgets::{Block, Borders, List, ListItem, ListState, Paragraph,BorderType, Clear};
[INFO] [stderr]   |                                    ^^^^  ^^^^^^^^  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> src/todo_txt.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |         &self.content.sort_by(|a, b| b.not_done.cmp(&a.not_done));
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 26 |         let _ = &self.content.sort_by(|a, b| b.not_done.cmp(&a.not_done));
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `docket` (bin "docket" test) generated 10 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/docket-47ab8bdebcfab6e5)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test list_util::test_clamp_zero ... ok
[INFO] [stdout] test list_util::test_negative_wrapping ... ok
[INFO] [stdout] test list_util::test_next ... ok
[INFO] [stdout] test list_util::test_previous ... ok
[INFO] [stdout] test list_util::test_clamp_max ... ok
[INFO] [stdout] test list_util::test_positive_wrapping ... ok
[INFO] [stdout] test todo_txt::open_and_close_file ... ok
[INFO] [stdout] test todo_txt::open_and_close_does_not_add_item ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "60adf6fe03c85a559153b1d5fe61161cd3438eefea7e8db6aa23c378243b45b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60adf6fe03c85a559153b1d5fe61161cd3438eefea7e8db6aa23c378243b45b2", kill_on_drop: false }`
[INFO] [stdout] 60adf6fe03c85a559153b1d5fe61161cd3438eefea7e8db6aa23c378243b45b2