[INFO] cloning repository https://github.com/nacleric/jaecheondaeseong
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nacleric/jaecheondaeseong" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnacleric%2Fjaecheondaeseong", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnacleric%2Fjaecheondaeseong'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b09d019f74f119ee6a369f8ae07284d9ea93c3c5
[INFO] checking nacleric/jaecheondaeseong against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnacleric%2Fjaecheondaeseong" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nacleric/jaecheondaeseong on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nacleric/jaecheondaeseong
[INFO] finished tweaking git repo https://github.com/nacleric/jaecheondaeseong
[INFO] tweaked toml for git repo https://github.com/nacleric/jaecheondaeseong written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/nacleric/jaecheondaeseong already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded non-empty-vec v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6defd488d54b41d2c59822027435b9b4ff89b59a0671f47024ed7be1f5fc86f4
[INFO] running `Command { std: "docker" "start" "-a" "6defd488d54b41d2c59822027435b9b4ff89b59a0671f47024ed7be1f5fc86f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6defd488d54b41d2c59822027435b9b4ff89b59a0671f47024ed7be1f5fc86f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6defd488d54b41d2c59822027435b9b4ff89b59a0671f47024ed7be1f5fc86f4", kill_on_drop: false }`
[INFO] [stdout] 6defd488d54b41d2c59822027435b9b4ff89b59a0671f47024ed7be1f5fc86f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3a3e5a45a04535583903c8e6a1390d07a0fb5160bfac29b167070b73a0d5ba2e
[INFO] running `Command { std: "docker" "start" "-a" "3a3e5a45a04535583903c8e6a1390d07a0fb5160bfac29b167070b73a0d5ba2e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]     Checking non-empty-vec v0.1.2
[INFO] [stderr]     Checking unicode-segmentation v1.7.1
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking termion v1.5.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]     Checking mori v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `CursorPosition` is imported redundantly
[INFO] [stdout]  --> src/model/position_buffer/unit_tests/delete_grapheme.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::model::cursor_position::CursorPosition;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 4 | use super::*;
[INFO] [stdout]   |     -------- the item `CursorPosition` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Utf8Buffer` is imported redundantly
[INFO] [stdout]  --> src/model/position_buffer/unit_tests/delete_grapheme.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::model::utf8_buffer::Utf8Buffer;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 3 |
[INFO] [stdout] 4 | use super::*;
[INFO] [stdout]   |     -------- the item `Utf8Buffer` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `CursorPosition` is imported redundantly
[INFO] [stdout]  --> src/model/position_buffer/unit_tests/insert_grapheme.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::model::cursor_position::CursorPosition;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 4 | use super::*;
[INFO] [stdout]   |     -------- the item `CursorPosition` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Utf8Buffer` is imported redundantly
[INFO] [stdout]  --> src/model/position_buffer/unit_tests/insert_grapheme.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::model::utf8_buffer::Utf8Buffer;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 3 |
[INFO] [stdout] 4 | use super::*;
[INFO] [stdout]   |     -------- the item `Utf8Buffer` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `CursorPosition` is imported redundantly
[INFO] [stdout]  --> src/model/position_buffer/unit_tests/position_buffer.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::model::cursor_position::CursorPosition;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 4 | use super::*;
[INFO] [stdout]   |     -------- the item `CursorPosition` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Utf8Buffer` is imported redundantly
[INFO] [stdout]  --> src/model/position_buffer/unit_tests/position_buffer.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::model::utf8_buffer::Utf8Buffer;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 3 |
[INFO] [stdout] 4 | use super::*;
[INFO] [stdout]   |     -------- the item `Utf8Buffer` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Error`, `cursor_position::CursorPosition`, `position_buffer::PositionBuffer`, `utf8_buffer::Utf8Buffer`, `view::Terminal`
[INFO] [stdout]   --> src/main.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 |     error::{Error, Result},
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout] 11 |     model::{
[INFO] [stdout] 12 |         cursor_position::CursorPosition, position_buffer::PositionBuffer, utf8_buffer::Utf8Buffer,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 13 |     },
[INFO] [stdout] 14 |     view::Terminal, // might replace this
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `self`, `stdout`
[INFO] [stdout]   --> src/main.rs:17:15
[INFO] [stdout]    |
[INFO] [stdout] 17 | use std::io::{self, stdout};
[INFO] [stdout]    |               ^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Error`, `cursor_position::CursorPosition`, `position_buffer::PositionBuffer`, `utf8_buffer::Utf8Buffer`, `view::Terminal`
[INFO] [stdout]   --> src/main.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 |     error::{Error, Result},
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout] 11 |     model::{
[INFO] [stdout] 12 |         cursor_position::CursorPosition, position_buffer::PositionBuffer, utf8_buffer::Utf8Buffer,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 13 |     },
[INFO] [stdout] 14 |     view::Terminal, // might replace this
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `self`, `stdout`
[INFO] [stdout]   --> src/main.rs:17:15
[INFO] [stdout]    |
[INFO] [stdout] 17 | use std::io::{self, stdout};
[INFO] [stdout]    |               ^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `append_row`, `col_count`, `delete_row`, `edit_row`, `insert_row`, and `row_count` are never used
[INFO] [stdout]   --> src/interfaces/row_buffer.rs:4:8
[INFO] [stdout]    |
[INFO] [stdout] 1  | pub trait RowBuffer {
[INFO] [stdout]    |           --------- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 4  |     fn append_row(&mut self) -> &mut Self {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 9  |     fn col_count(&self, row_index: usize) -> usize;
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 10 |     fn delete_row(&mut self, row_index: usize) -> Option<Self::Row>;
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 11 |     fn edit_row(&mut self, row_index: usize) -> Option<&mut Self::Row>;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 12 |     fn insert_row(&mut self, row_index: usize) -> &mut Self;
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 13 |     fn row_count(&self) -> usize;
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `as_tuple`, `col`, and `row` are never used
[INFO] [stdout]   --> src/model/cursor_position.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl CursorPosition {
[INFO] [stdout]    | ------------------- associated items in this implementation
[INFO] [stdout] 11 |     pub fn new(col: usize, row: usize) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 15 |     pub fn as_tuple(&self) -> (usize, usize) {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub fn col(&self) -> usize {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |     pub fn row(&self) -> usize {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/model/position_buffer.rs:19:12
[INFO] [stdout]     |
[INFO] [stdout] 18  | impl PositionBuffer {
[INFO] [stdout]     | ------------------- associated items in this implementation
[INFO] [stdout] 19  |     pub fn new(buffer: Utf8Buffer, position: CursorPosition) -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 26  |     pub fn delete_grapheme(&mut self, direction: Direction) -> Option<char> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 68  |     pub fn index(&mut self) -> &mut Self {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 73  |     pub fn insert_grapheme(&mut self, grapheme: char) -> &mut Self {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 84  |     pub fn move_down(&mut self) -> &mut Self {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 99  |     pub fn move_left(&mut self) -> &mut Self {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 117 |     pub fn move_right(&mut self) -> &mut Self {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 136 |     pub fn move_up(&mut self) -> &mut Self {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Direction` is never used
[INFO] [stdout]  --> src/model/utf8_buffer/direction.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub enum Direction {
[INFO] [stdout]   |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `position_buffer`, `input`, and `output` are never read
[INFO] [stdout]   --> src/view.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Terminal {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 13 |     position_buffer: PositionBuffer,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 14 |     input: Stdin,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 15 |     output: Stdout,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Terminal` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]   --> src/view.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Terminal {
[INFO] [stdout]    | ------------- associated items in this implementation
[INFO] [stdout] 19 |     pub fn new(buffer: PositionBuffer) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn clear_screen(&mut self) -> Result<(), std::io::Error> {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 36 |     pub fn draw(&mut self) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     pub fn print(&mut self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     pub fn render_frame(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     pub fn resize(&mut self) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |     pub fn set_color(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/editor.rs:70:12
[INFO] [stdout]    |
[INFO] [stdout] 70 |     panic!(e)
[INFO] [stdout]    |            ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 70 |     panic!("{}", e)
[INFO] [stdout]    |            +++++
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 70 |     std::panic::panic_any(e)
[INFO] [stdout]    |     ~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/model/utf8_buffer.rs:36:45
[INFO] [stdout]    |
[INFO] [stdout] 36 |             .unwrap_or_else(|| unreachable!(ERR_INTERNAL_NON_EMPTY_VEC_REQUIRED));
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `unreachable!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 36 |             .unwrap_or_else(|| unreachable!("{}", ERR_INTERNAL_NON_EMPTY_VEC_REQUIRED));
[INFO] [stdout]    |                                             +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/model/utf8_buffer.rs:52:45
[INFO] [stdout]    |
[INFO] [stdout] 52 |             .unwrap_or_else(|| unreachable!(ERR_INTERNAL_NON_EMPTY_VEC_REQUIRED));
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `unreachable!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 52 |             .unwrap_or_else(|| unreachable!("{}", ERR_INTERNAL_NON_EMPTY_VEC_REQUIRED));
[INFO] [stdout]    |                                             +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/model/utf8_buffer.rs:65:49
[INFO] [stdout]    |
[INFO] [stdout] 65 |                 .unwrap_or_else(|| unreachable!(ERR_INTERNAL_NON_EMPTY_VEC_REQUIRED)),
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `unreachable!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 65 |                 .unwrap_or_else(|| unreachable!("{}", ERR_INTERNAL_NON_EMPTY_VEC_REQUIRED)),
[INFO] [stdout]    |                                                 +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/model/utf8_buffer.rs:74:45
[INFO] [stdout]    |
[INFO] [stdout] 74 |             .unwrap_or_else(|| unreachable!(ERR_INTERNAL_NON_EMPTY_VEC_REQUIRED));
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `unreachable!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 74 |             .unwrap_or_else(|| unreachable!("{}", ERR_INTERNAL_NON_EMPTY_VEC_REQUIRED));
[INFO] [stdout]    |                                             +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `index` is never used
[INFO] [stdout]   --> src/model/position_buffer.rs:68:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl PositionBuffer {
[INFO] [stdout]    | ------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 68 |     pub fn index(&mut self) -> &mut Self {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `position_buffer`, `input`, and `output` are never read
[INFO] [stdout]   --> src/view.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Terminal {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 13 |     position_buffer: PositionBuffer,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 14 |     input: Stdin,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 15 |     output: Stdout,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Terminal` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]   --> src/view.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Terminal {
[INFO] [stdout]    | ------------- associated items in this implementation
[INFO] [stdout] 19 |     pub fn new(buffer: PositionBuffer) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn clear_screen(&mut self) -> Result<(), std::io::Error> {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 36 |     pub fn draw(&mut self) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     pub fn print(&mut self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     pub fn render_frame(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     pub fn resize(&mut self) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |     pub fn set_color(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/editor.rs:70:12
[INFO] [stdout]    |
[INFO] [stdout] 70 |     panic!(e)
[INFO] [stdout]    |            ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 70 |     panic!("{}", e)
[INFO] [stdout]    |            +++++
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 70 |     std::panic::panic_any(e)
[INFO] [stdout]    |     ~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/model/utf8_buffer.rs:36:45
[INFO] [stdout]    |
[INFO] [stdout] 36 |             .unwrap_or_else(|| unreachable!(ERR_INTERNAL_NON_EMPTY_VEC_REQUIRED));
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `unreachable!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 36 |             .unwrap_or_else(|| unreachable!("{}", ERR_INTERNAL_NON_EMPTY_VEC_REQUIRED));
[INFO] [stdout]    |                                             +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/model/utf8_buffer.rs:52:45
[INFO] [stdout]    |
[INFO] [stdout] 52 |             .unwrap_or_else(|| unreachable!(ERR_INTERNAL_NON_EMPTY_VEC_REQUIRED));
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `unreachable!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 52 |             .unwrap_or_else(|| unreachable!("{}", ERR_INTERNAL_NON_EMPTY_VEC_REQUIRED));
[INFO] [stdout]    |                                             +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/model/utf8_buffer.rs:65:49
[INFO] [stdout]    |
[INFO] [stdout] 65 |                 .unwrap_or_else(|| unreachable!(ERR_INTERNAL_NON_EMPTY_VEC_REQUIRED)),
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `unreachable!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 65 |                 .unwrap_or_else(|| unreachable!("{}", ERR_INTERNAL_NON_EMPTY_VEC_REQUIRED)),
[INFO] [stdout]    |                                                 +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/model/utf8_buffer.rs:74:45
[INFO] [stdout]    |
[INFO] [stdout] 74 |             .unwrap_or_else(|| unreachable!(ERR_INTERNAL_NON_EMPTY_VEC_REQUIRED));
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `unreachable!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 74 |             .unwrap_or_else(|| unreachable!("{}", ERR_INTERNAL_NON_EMPTY_VEC_REQUIRED));
[INFO] [stdout]    |                                             +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.50s
[INFO] running `Command { std: "docker" "inspect" "3a3e5a45a04535583903c8e6a1390d07a0fb5160bfac29b167070b73a0d5ba2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a3e5a45a04535583903c8e6a1390d07a0fb5160bfac29b167070b73a0d5ba2e", kill_on_drop: false }`
[INFO] [stdout] 3a3e5a45a04535583903c8e6a1390d07a0fb5160bfac29b167070b73a0d5ba2e
[INFO] checking nacleric/jaecheondaeseong against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnacleric%2Fjaecheondaeseong" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nacleric/jaecheondaeseong on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nacleric/jaecheondaeseong
[INFO] finished tweaking git repo https://github.com/nacleric/jaecheondaeseong
[INFO] tweaked toml for git repo https://github.com/nacleric/jaecheondaeseong written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/nacleric/jaecheondaeseong already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9db77f27bae3a2fc9c7784f8d1fafd7f8da8935a60e4009a26763fa90e00c35d
[INFO] running `Command { std: "docker" "start" "-a" "9db77f27bae3a2fc9c7784f8d1fafd7f8da8935a60e4009a26763fa90e00c35d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9db77f27bae3a2fc9c7784f8d1fafd7f8da8935a60e4009a26763fa90e00c35d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9db77f27bae3a2fc9c7784f8d1fafd7f8da8935a60e4009a26763fa90e00c35d", kill_on_drop: false }`
[INFO] [stdout] 9db77f27bae3a2fc9c7784f8d1fafd7f8da8935a60e4009a26763fa90e00c35d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1b957b604ca39fdfb293de715f3eb99fd7b2650c0b08dab03b4eb9b0d849289e
[INFO] running `Command { std: "docker" "start" "-a" "1b957b604ca39fdfb293de715f3eb99fd7b2650c0b08dab03b4eb9b0d849289e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]     Checking non-empty-vec v0.1.2
[INFO] [stderr]     Checking unicode-segmentation v1.7.1
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking termion v1.5.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]     Checking mori v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Error`, `cursor_position::CursorPosition`, `position_buffer::PositionBuffer`, `utf8_buffer::Utf8Buffer`, `view::Terminal`
[INFO] [stdout]   --> src/main.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 |     error::{Error, Result},
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout] 11 |     model::{
[INFO] [stdout] 12 |         cursor_position::CursorPosition, position_buffer::PositionBuffer, utf8_buffer::Utf8Buffer,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 13 |     },
[INFO] [stdout] 14 |     view::Terminal, // might replace this
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `self`, `stdout`
[INFO] [stdout]   --> src/main.rs:17:15
[INFO] [stdout]    |
[INFO] [stdout] 17 | use std::io::{self, stdout};
[INFO] [stdout]    |               ^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `CursorPosition` is imported redundantly
[INFO] [stdout]  --> src/model/position_buffer/unit_tests/delete_grapheme.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::model::cursor_position::CursorPosition;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 4 | use super::*;
[INFO] [stdout]   |     -------- the item `CursorPosition` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Utf8Buffer` is imported redundantly
[INFO] [stdout]  --> src/model/position_buffer/unit_tests/delete_grapheme.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::model::utf8_buffer::Utf8Buffer;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 3 |
[INFO] [stdout] 4 | use super::*;
[INFO] [stdout]   |     -------- the item `Utf8Buffer` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `CursorPosition` is imported redundantly
[INFO] [stdout]  --> src/model/position_buffer/unit_tests/insert_grapheme.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::model::cursor_position::CursorPosition;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 4 | use super::*;
[INFO] [stdout]   |     -------- the item `CursorPosition` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Utf8Buffer` is imported redundantly
[INFO] [stdout]  --> src/model/position_buffer/unit_tests/insert_grapheme.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::model::utf8_buffer::Utf8Buffer;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 3 |
[INFO] [stdout] 4 | use super::*;
[INFO] [stdout]   |     -------- the item `Utf8Buffer` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `CursorPosition` is imported redundantly
[INFO] [stdout]  --> src/model/position_buffer/unit_tests/position_buffer.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::model::cursor_position::CursorPosition;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 4 | use super::*;
[INFO] [stdout]   |     -------- the item `CursorPosition` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Utf8Buffer` is imported redundantly
[INFO] [stdout]  --> src/model/position_buffer/unit_tests/position_buffer.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::model::utf8_buffer::Utf8Buffer;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 3 |
[INFO] [stdout] 4 | use super::*;
[INFO] [stdout]   |     -------- the item `Utf8Buffer` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Error`, `cursor_position::CursorPosition`, `position_buffer::PositionBuffer`, `utf8_buffer::Utf8Buffer`, `view::Terminal`
[INFO] [stdout]   --> src/main.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 |     error::{Error, Result},
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout] 11 |     model::{
[INFO] [stdout] 12 |         cursor_position::CursorPosition, position_buffer::PositionBuffer, utf8_buffer::Utf8Buffer,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 13 |     },
[INFO] [stdout] 14 |     view::Terminal, // might replace this
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `self`, `stdout`
[INFO] [stdout]   --> src/main.rs:17:15
[INFO] [stdout]    |
[INFO] [stdout] 17 | use std::io::{self, stdout};
[INFO] [stdout]    |               ^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `append_row`, `col_count`, `delete_row`, `edit_row`, `insert_row`, and `row_count` are never used
[INFO] [stdout]   --> src/interfaces/row_buffer.rs:4:8
[INFO] [stdout]    |
[INFO] [stdout] 1  | pub trait RowBuffer {
[INFO] [stdout]    |           --------- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 4  |     fn append_row(&mut self) -> &mut Self {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 9  |     fn col_count(&self, row_index: usize) -> usize;
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 10 |     fn delete_row(&mut self, row_index: usize) -> Option<Self::Row>;
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 11 |     fn edit_row(&mut self, row_index: usize) -> Option<&mut Self::Row>;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 12 |     fn insert_row(&mut self, row_index: usize) -> &mut Self;
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 13 |     fn row_count(&self) -> usize;
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `as_tuple`, `col`, and `row` are never used
[INFO] [stdout]   --> src/model/cursor_position.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl CursorPosition {
[INFO] [stdout]    | ------------------- associated items in this implementation
[INFO] [stdout] 11 |     pub fn new(col: usize, row: usize) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 15 |     pub fn as_tuple(&self) -> (usize, usize) {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub fn col(&self) -> usize {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |     pub fn row(&self) -> usize {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/model/position_buffer.rs:19:12
[INFO] [stdout]     |
[INFO] [stdout] 18  | impl PositionBuffer {
[INFO] [stdout]     | ------------------- associated items in this implementation
[INFO] [stdout] 19  |     pub fn new(buffer: Utf8Buffer, position: CursorPosition) -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 26  |     pub fn delete_grapheme(&mut self, direction: Direction) -> Option<char> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 68  |     pub fn index(&mut self) -> &mut Self {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 73  |     pub fn insert_grapheme(&mut self, grapheme: char) -> &mut Self {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 84  |     pub fn move_down(&mut self) -> &mut Self {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 99  |     pub fn move_left(&mut self) -> &mut Self {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 117 |     pub fn move_right(&mut self) -> &mut Self {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 136 |     pub fn move_up(&mut self) -> &mut Self {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Direction` is never used
[INFO] [stdout]  --> src/model/utf8_buffer/direction.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub enum Direction {
[INFO] [stdout]   |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `position_buffer`, `input`, and `output` are never read
[INFO] [stdout]   --> src/view.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Terminal {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 13 |     position_buffer: PositionBuffer,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 14 |     input: Stdin,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 15 |     output: Stdout,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Terminal` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]   --> src/view.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Terminal {
[INFO] [stdout]    | ------------- associated items in this implementation
[INFO] [stdout] 19 |     pub fn new(buffer: PositionBuffer) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn clear_screen(&mut self) -> Result<(), std::io::Error> {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 36 |     pub fn draw(&mut self) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     pub fn print(&mut self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     pub fn render_frame(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     pub fn resize(&mut self) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |     pub fn set_color(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/editor.rs:70:12
[INFO] [stdout]    |
[INFO] [stdout] 70 |     panic!(e)
[INFO] [stdout]    |            ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 70 |     panic!("{}", e)
[INFO] [stdout]    |            +++++
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 70 |     std::panic::panic_any(e)
[INFO] [stdout]    |     ~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/model/utf8_buffer.rs:36:45
[INFO] [stdout]    |
[INFO] [stdout] 36 |             .unwrap_or_else(|| unreachable!(ERR_INTERNAL_NON_EMPTY_VEC_REQUIRED));
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `unreachable!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 36 |             .unwrap_or_else(|| unreachable!("{}", ERR_INTERNAL_NON_EMPTY_VEC_REQUIRED));
[INFO] [stdout]    |                                             +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/model/utf8_buffer.rs:52:45
[INFO] [stdout]    |
[INFO] [stdout] 52 |             .unwrap_or_else(|| unreachable!(ERR_INTERNAL_NON_EMPTY_VEC_REQUIRED));
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `unreachable!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 52 |             .unwrap_or_else(|| unreachable!("{}", ERR_INTERNAL_NON_EMPTY_VEC_REQUIRED));
[INFO] [stdout]    |                                             +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/model/utf8_buffer.rs:65:49
[INFO] [stdout]    |
[INFO] [stdout] 65 |                 .unwrap_or_else(|| unreachable!(ERR_INTERNAL_NON_EMPTY_VEC_REQUIRED)),
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `unreachable!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 65 |                 .unwrap_or_else(|| unreachable!("{}", ERR_INTERNAL_NON_EMPTY_VEC_REQUIRED)),
[INFO] [stdout]    |                                                 +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/model/utf8_buffer.rs:74:45
[INFO] [stdout]    |
[INFO] [stdout] 74 |             .unwrap_or_else(|| unreachable!(ERR_INTERNAL_NON_EMPTY_VEC_REQUIRED));
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `unreachable!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 74 |             .unwrap_or_else(|| unreachable!("{}", ERR_INTERNAL_NON_EMPTY_VEC_REQUIRED));
[INFO] [stdout]    |                                             +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `index` is never used
[INFO] [stdout]   --> src/model/position_buffer.rs:68:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl PositionBuffer {
[INFO] [stdout]    | ------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 68 |     pub fn index(&mut self) -> &mut Self {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `position_buffer`, `input`, and `output` are never read
[INFO] [stdout]   --> src/view.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Terminal {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 13 |     position_buffer: PositionBuffer,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 14 |     input: Stdin,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 15 |     output: Stdout,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Terminal` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]   --> src/view.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Terminal {
[INFO] [stdout]    | ------------- associated items in this implementation
[INFO] [stdout] 19 |     pub fn new(buffer: PositionBuffer) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn clear_screen(&mut self) -> Result<(), std::io::Error> {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 36 |     pub fn draw(&mut self) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     pub fn print(&mut self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     pub fn render_frame(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     pub fn resize(&mut self) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |     pub fn set_color(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/editor.rs:70:12
[INFO] [stdout]    |
[INFO] [stdout] 70 |     panic!(e)
[INFO] [stdout]    |            ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 70 |     panic!("{}", e)
[INFO] [stdout]    |            +++++
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 70 |     std::panic::panic_any(e)
[INFO] [stdout]    |     ~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/model/utf8_buffer.rs:36:45
[INFO] [stdout]    |
[INFO] [stdout] 36 |             .unwrap_or_else(|| unreachable!(ERR_INTERNAL_NON_EMPTY_VEC_REQUIRED));
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `unreachable!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 36 |             .unwrap_or_else(|| unreachable!("{}", ERR_INTERNAL_NON_EMPTY_VEC_REQUIRED));
[INFO] [stdout]    |                                             +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/model/utf8_buffer.rs:52:45
[INFO] [stdout]    |
[INFO] [stdout] 52 |             .unwrap_or_else(|| unreachable!(ERR_INTERNAL_NON_EMPTY_VEC_REQUIRED));
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `unreachable!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 52 |             .unwrap_or_else(|| unreachable!("{}", ERR_INTERNAL_NON_EMPTY_VEC_REQUIRED));
[INFO] [stdout]    |                                             +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/model/utf8_buffer.rs:65:49
[INFO] [stdout]    |
[INFO] [stdout] 65 |                 .unwrap_or_else(|| unreachable!(ERR_INTERNAL_NON_EMPTY_VEC_REQUIRED)),
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `unreachable!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 65 |                 .unwrap_or_else(|| unreachable!("{}", ERR_INTERNAL_NON_EMPTY_VEC_REQUIRED)),
[INFO] [stdout]    |                                                 +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/model/utf8_buffer.rs:74:45
[INFO] [stdout]    |
[INFO] [stdout] 74 |             .unwrap_or_else(|| unreachable!(ERR_INTERNAL_NON_EMPTY_VEC_REQUIRED));
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `unreachable!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 74 |             .unwrap_or_else(|| unreachable!("{}", ERR_INTERNAL_NON_EMPTY_VEC_REQUIRED));
[INFO] [stdout]    |                                             +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.52s
[INFO] running `Command { std: "docker" "inspect" "1b957b604ca39fdfb293de715f3eb99fd7b2650c0b08dab03b4eb9b0d849289e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b957b604ca39fdfb293de715f3eb99fd7b2650c0b08dab03b4eb9b0d849289e", kill_on_drop: false }`
[INFO] [stdout] 1b957b604ca39fdfb293de715f3eb99fd7b2650c0b08dab03b4eb9b0d849289e