[INFO] cloning repository https://github.com/yyokii/Hecto_RustTextEditor
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yyokii/Hecto_RustTextEditor" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyyokii%2FHecto_RustTextEditor", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyyokii%2FHecto_RustTextEditor'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 43f9d477341a23ba82115496a73ebeb9aec81aea
[INFO] checking yyokii/Hecto_RustTextEditor against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyyokii%2FHecto_RustTextEditor" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/yyokii/Hecto_RustTextEditor
[INFO] finished tweaking git repo https://github.com/yyokii/Hecto_RustTextEditor
[INFO] tweaked toml for git repo https://github.com/yyokii/Hecto_RustTextEditor written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/yyokii/Hecto_RustTextEditor on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/yyokii/Hecto_RustTextEditor 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ccd20808285c2e77f361439f3e03e1a76d285d6940acbb45a3960f384fd870f3
[INFO] running `Command { std: "docker" "start" "-a" "ccd20808285c2e77f361439f3e03e1a76d285d6940acbb45a3960f384fd870f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ccd20808285c2e77f361439f3e03e1a76d285d6940acbb45a3960f384fd870f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ccd20808285c2e77f361439f3e03e1a76d285d6940acbb45a3960f384fd870f3", kill_on_drop: false }`
[INFO] [stdout] ccd20808285c2e77f361439f3e03e1a76d285d6940acbb45a3960f384fd870f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4763d4ba481a17ffd66e2a86828306368d8dd64a779d090a14fd2a4c3aab3656
[INFO] running `Command { std: "docker" "start" "-a" "4763d4ba481a17ffd66e2a86828306368d8dd64a779d090a14fd2a4c3aab3656", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking unicode-segmentation v1.8.0
[INFO] [stderr]     Checking termion v1.5.6
[INFO] [stderr]     Checking hecto v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `file_type`
[INFO] [stdout]   --> src/document.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |         let file_type = FileType::from(filename);
[INFO] [stdout]    |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file_type`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/editor.rs:225:13
[INFO] [stdout]     |
[INFO] [stdout] 225 |         let mut offset = &mut self.offset;
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file_type`
[INFO] [stdout]   --> src/document.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |         let file_type = FileType::from(filename);
[INFO] [stdout]    |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file_type`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `color`
[INFO] [stdout]   --> src/terminal.rs:62:25
[INFO] [stdout]    |
[INFO] [stdout] 62 |     pub fn set_bg_color(color: color::Rgb) {
[INFO] [stdout]    |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `multiline_comments` is never read
[INFO] [stdout]   --> src/filetype.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub struct HighlightingOptions {
[INFO] [stdout]    |            ------------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 12 |     multiline_comments: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `multiline_comments` is never used
[INFO] [stdout]    --> src/filetype.rs:132:12
[INFO] [stdout]     |
[INFO] [stdout] 119 | impl HighlightingOptions {
[INFO] [stdout]     | ------------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 132 |     pub fn multiline_comments(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_empty` is never used
[INFO] [stdout]   --> src/row.rs:62:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl Row {
[INFO] [stdout]    | -------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 62 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hecto` (bin "hecto" test) due to 8 previous errors; 6 warnings emitted
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/editor.rs:225:13
[INFO] [stdout]     |
[INFO] [stdout] 225 |         let mut offset = &mut self.offset;
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/editor.rs:218:21
[INFO] [stdout]     |
[INFO] [stdout] 218 |           let width = self
[INFO] [stdout]     |  _____________________^
[INFO] [stdout] 219 | |             .terminal
[INFO] [stdout] 220 | |             .size()
[INFO] [stdout] 221 | |             .width
[INFO] [stdout] 222 | |             .try_into()
[INFO] [stdout]     | |_______________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/editor.rs:224:22
[INFO] [stdout]     |
[INFO] [stdout] 224 |         let height = self.terminal.size().height.try_into().unwrap();
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/editor.rs:238:31
[INFO] [stdout]     |
[INFO] [stdout] 238 |         let terminal_height = self.terminal.size().height.try_into().unwrap();
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/editor.rs:304:28
[INFO] [stdout]     |
[INFO] [stdout] 304 |         let width: usize = self.terminal.size().width.try_into().unwrap();
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/editor.rs:314:28
[INFO] [stdout]     |
[INFO] [stdout] 314 |         let width: usize = self.terminal.size().width.try_into().unwrap();
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/editor.rs:325:36
[INFO] [stdout]     |
[INFO] [stdout] 325 |             let row_usize: usize = terminal_row.try_into().unwrap();
[INFO] [stdout]     |                                    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/editor.rs:337:28
[INFO] [stdout]     |
[INFO] [stdout] 337 |         let width: usize = self.terminal.size().width.try_into().unwrap();
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/editor.rs:376:27
[INFO] [stdout]     |
[INFO] [stdout] 376 |             text.truncate(self.terminal.size().width.try_into().unwrap());
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `color`
[INFO] [stdout]   --> src/terminal.rs:62:25
[INFO] [stdout]    |
[INFO] [stdout] 62 |     pub fn set_bg_color(color: color::Rgb) {
[INFO] [stdout]    |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `multiline_comments` is never read
[INFO] [stdout]   --> src/filetype.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub struct HighlightingOptions {
[INFO] [stdout]    |            ------------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 12 |     multiline_comments: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `multiline_comments` is never used
[INFO] [stdout]    --> src/filetype.rs:132:12
[INFO] [stdout]     |
[INFO] [stdout] 119 | impl HighlightingOptions {
[INFO] [stdout]     | ------------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 132 |     pub fn multiline_comments(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_empty` is never used
[INFO] [stdout]   --> src/row.rs:62:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl Row {
[INFO] [stdout]    | -------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 62 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/editor.rs:218:21
[INFO] [stdout]     |
[INFO] [stdout] 218 |           let width = self
[INFO] [stdout]     |  _____________________^
[INFO] [stdout] 219 | |             .terminal
[INFO] [stdout] 220 | |             .size()
[INFO] [stdout] 221 | |             .width
[INFO] [stdout] 222 | |             .try_into()
[INFO] [stdout]     | |_______________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/editor.rs:224:22
[INFO] [stdout]     |
[INFO] [stdout] 224 |         let height = self.terminal.size().height.try_into().unwrap();
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/editor.rs:238:31
[INFO] [stdout]     |
[INFO] [stdout] 238 |         let terminal_height = self.terminal.size().height.try_into().unwrap();
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/editor.rs:304:28
[INFO] [stdout]     |
[INFO] [stdout] 304 |         let width: usize = self.terminal.size().width.try_into().unwrap();
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/editor.rs:314:28
[INFO] [stdout]     |
[INFO] [stdout] 314 |         let width: usize = self.terminal.size().width.try_into().unwrap();
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/editor.rs:325:36
[INFO] [stdout]     |
[INFO] [stdout] 325 |             let row_usize: usize = terminal_row.try_into().unwrap();
[INFO] [stdout]     |                                    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/editor.rs:337:28
[INFO] [stdout]     |
[INFO] [stdout] 337 |         let width: usize = self.terminal.size().width.try_into().unwrap();
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/editor.rs:376:27
[INFO] [stdout]     |
[INFO] [stdout] 376 |             text.truncate(self.terminal.size().width.try_into().unwrap());
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hecto` (bin "hecto") due to 8 previous errors; 6 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "4763d4ba481a17ffd66e2a86828306368d8dd64a779d090a14fd2a4c3aab3656", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4763d4ba481a17ffd66e2a86828306368d8dd64a779d090a14fd2a4c3aab3656", kill_on_drop: false }`
[INFO] [stdout] 4763d4ba481a17ffd66e2a86828306368d8dd64a779d090a14fd2a4c3aab3656
