[INFO] cloning repository https://github.com/Skysolderone/text-edit
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Skysolderone/text-edit" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSkysolderone%2Ftext-edit", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSkysolderone%2Ftext-edit'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7c86659726cbe559ab4410ca0aca7418cf2d3567
[INFO] checking Skysolderone/text-edit against master#4eb62535fc12dd1a63fd43a4173e224e79313c4d for pr-158816
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSkysolderone%2Ftext-edit" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Skysolderone/text-edit
[INFO] finished tweaking git repo https://github.com/Skysolderone/text-edit
[INFO] tweaked toml for git repo https://github.com/Skysolderone/text-edit written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Skysolderone/text-edit on toolchain 4eb62535fc12dd1a63fd43a4173e224e79313c4d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Skysolderone/text-edit 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" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crossterm v0.21.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3d5ced03c013a94a2f102a4510f48a6e9184255caf5fd8244f58017bde7f5210" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] fcd0d6a0096d908ef8b943682743bbad43f31402a3b20b8db712ba1b18696161
[INFO] running `Command { std: "docker" "start" "fcd0d6a0096d908ef8b943682743bbad43f31402a3b20b8db712ba1b18696161", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fcd0d6a0096d908ef8b943682743bbad43f31402a3b20b8db712ba1b18696161", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "fcd0d6a0096d908ef8b943682743bbad43f31402a3b20b8db712ba1b18696161" "/opt/rustwide/cargo-home/bin/cargo" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fcd0d6a0096d908ef8b943682743bbad43f31402a3b20b8db712ba1b18696161", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "fcd0d6a0096d908ef8b943682743bbad43f31402a3b20b8db712ba1b18696161" "/opt/rustwide/cargo-home/bin/cargo" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking log v0.4.22
[INFO] [stderr]     Checking instant v0.1.13
[INFO] [stderr]     Checking signal-hook-registry v1.4.2
[INFO] [stderr]     Checking parking_lot_core v0.8.6
[INFO] [stderr]     Checking signal-hook v0.3.17
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking signal-hook-mio v0.2.3
[INFO] [stderr]     Checking crossterm v0.21.0
[INFO] [stderr]     Checking text_edit v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `color`
[INFO] [stdout]     --> src/main.rs:1099:23
[INFO] [stdout]      |
[INFO] [stdout]  426 | / syntax_struct! {
[INFO] [stdout]  427 | |     struct RustHighlight{
[INFO] [stdout]  428 | |         extensions:["rs"],
[INFO] [stdout]  429 | |         file_type:"rust",
[INFO] [stdout] ...    |
[INFO] [stdout]  444 | | }
[INFO] [stdout]      | |_- in this macro invocation
[INFO] [stdout] ...
[INFO] [stdout] 1099 |                   $(let color=$color;let keyboards=vec!($($words),*);)*
[INFO] [stdout]      |                         ^^^^^
[INFO] [stdout]      |
[INFO] [stdout] help: `color` is captured in macro and introduced a unused variable
[INFO] [stdout]     --> src/main.rs:1099:23
[INFO] [stdout]      |
[INFO] [stdout]  426 | / syntax_struct! {
[INFO] [stdout]  427 | |     struct RustHighlight{
[INFO] [stdout]  428 | |         extensions:["rs"],
[INFO] [stdout]  429 | |         file_type:"rust",
[INFO] [stdout] ...    |
[INFO] [stdout]  444 | | }
[INFO] [stdout]      | |_- in this macro invocation
[INFO] [stdout] ...
[INFO] [stdout] 1099 |                   $(let color=$color;let keyboards=vec!($($words),*);)*
[INFO] [stdout]      |                         ^^^^^
[INFO] [stdout]      = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout]      = note: this warning originates in the macro `syntax_struct` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `keyboards`
[INFO] [stdout]     --> src/main.rs:1099:40
[INFO] [stdout]      |
[INFO] [stdout]  426 | / syntax_struct! {
[INFO] [stdout]  427 | |     struct RustHighlight{
[INFO] [stdout]  428 | |         extensions:["rs"],
[INFO] [stdout]  429 | |         file_type:"rust",
[INFO] [stdout] ...    |
[INFO] [stdout]  444 | | }
[INFO] [stdout]      | |_- in this macro invocation
[INFO] [stdout] ...
[INFO] [stdout] 1099 |                   $(let color=$color;let keyboards=vec!($($words),*);)*
[INFO] [stdout]      |                                          ^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout] help: `keyboards` is captured in macro and introduced a unused variable
[INFO] [stdout]     --> src/main.rs:1099:40
[INFO] [stdout]      |
[INFO] [stdout]  426 | / syntax_struct! {
[INFO] [stdout]  427 | |     struct RustHighlight{
[INFO] [stdout]  428 | |         extensions:["rs"],
[INFO] [stdout]  429 | |         file_type:"rust",
[INFO] [stdout] ...    |
[INFO] [stdout]  444 | | }
[INFO] [stdout]      | |_- in this macro invocation
[INFO] [stdout] ...
[INFO] [stdout] 1099 |                   $(let color=$color;let keyboards=vec!($($words),*);)*
[INFO] [stdout]      |                                          ^^^^^^^^^
[INFO] [stdout]      = note: this warning originates in the macro `syntax_struct` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `color`
[INFO] [stdout]     --> src/main.rs:1099:23
[INFO] [stdout]      |
[INFO] [stdout]  426 | / syntax_struct! {
[INFO] [stdout]  427 | |     struct RustHighlight{
[INFO] [stdout]  428 | |         extensions:["rs"],
[INFO] [stdout]  429 | |         file_type:"rust",
[INFO] [stdout] ...    |
[INFO] [stdout]  444 | | }
[INFO] [stdout]      | |_- in this macro invocation
[INFO] [stdout] ...
[INFO] [stdout] 1099 |                   $(let color=$color;let keyboards=vec!($($words),*);)*
[INFO] [stdout]      |                         ^^^^^
[INFO] [stdout]      |
[INFO] [stdout] help: `color` is captured in macro and introduced a unused variable
[INFO] [stdout]     --> src/main.rs:1099:23
[INFO] [stdout]      |
[INFO] [stdout]  426 | / syntax_struct! {
[INFO] [stdout]  427 | |     struct RustHighlight{
[INFO] [stdout]  428 | |         extensions:["rs"],
[INFO] [stdout]  429 | |         file_type:"rust",
[INFO] [stdout] ...    |
[INFO] [stdout]  444 | | }
[INFO] [stdout]      | |_- in this macro invocation
[INFO] [stdout] ...
[INFO] [stdout] 1099 |                   $(let color=$color;let keyboards=vec!($($words),*);)*
[INFO] [stdout]      |                         ^^^^^
[INFO] [stdout]      = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout]      = note: this warning originates in the macro `syntax_struct` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `keyboards`
[INFO] [stdout]     --> src/main.rs:1099:40
[INFO] [stdout]      |
[INFO] [stdout]  426 | / syntax_struct! {
[INFO] [stdout]  427 | |     struct RustHighlight{
[INFO] [stdout]  428 | |         extensions:["rs"],
[INFO] [stdout]  429 | |         file_type:"rust",
[INFO] [stdout] ...    |
[INFO] [stdout]  444 | | }
[INFO] [stdout]      | |_- in this macro invocation
[INFO] [stdout] ...
[INFO] [stdout] 1099 |                   $(let color=$color;let keyboards=vec!($($words),*);)*
[INFO] [stdout]      |                                          ^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout] help: `keyboards` is captured in macro and introduced a unused variable
[INFO] [stdout]     --> src/main.rs:1099:40
[INFO] [stdout]      |
[INFO] [stdout]  426 | / syntax_struct! {
[INFO] [stdout]  427 | |     struct RustHighlight{
[INFO] [stdout]  428 | |         extensions:["rs"],
[INFO] [stdout]  429 | |         file_type:"rust",
[INFO] [stdout] ...    |
[INFO] [stdout]  444 | | }
[INFO] [stdout]      | |_- in this macro invocation
[INFO] [stdout] ...
[INFO] [stdout] 1099 |                   $(let color=$color;let keyboards=vec!($($words),*);)*
[INFO] [stdout]      |                                          ^^^^^^^^^
[INFO] [stdout]      = note: this warning originates in the macro `syntax_struct` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/main.rs:1135:21
[INFO] [stdout]      |
[INFO] [stdout]  426 | / syntax_struct! {
[INFO] [stdout]  427 | |     struct RustHighlight{
[INFO] [stdout]  428 | |         extensions:["rs"],
[INFO] [stdout]  429 | |         file_type:"rust",
[INFO] [stdout] ...    |
[INFO] [stdout]  444 | | }
[INFO] [stdout]      | |_- in this macro invocation
[INFO] [stdout] ...
[INFO] [stdout] 1135 |                   let mut in_comment=at>0&&edit_rows[at-1].is_comment;
[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]      = note: this warning originates in the macro `syntax_struct` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `in_comment`
[INFO] [stdout]     --> src/main.rs:1135:21
[INFO] [stdout]      |
[INFO] [stdout]  426 | / syntax_struct! {
[INFO] [stdout]  427 | |     struct RustHighlight{
[INFO] [stdout]  428 | |         extensions:["rs"],
[INFO] [stdout]  429 | |         file_type:"rust",
[INFO] [stdout] ...    |
[INFO] [stdout]  444 | | }
[INFO] [stdout]      | |_- in this macro invocation
[INFO] [stdout] ...
[INFO] [stdout] 1135 |                   let mut in_comment=at>0&&edit_rows[at-1].is_comment;
[INFO] [stdout]      |                       ^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout] help: `in_comment` is captured in macro and introduced a unused variable
[INFO] [stdout]     --> src/main.rs:1135:21
[INFO] [stdout]      |
[INFO] [stdout]  426 | / syntax_struct! {
[INFO] [stdout]  427 | |     struct RustHighlight{
[INFO] [stdout]  428 | |         extensions:["rs"],
[INFO] [stdout]  429 | |         file_type:"rust",
[INFO] [stdout] ...    |
[INFO] [stdout]  444 | | }
[INFO] [stdout]      | |_- in this macro invocation
[INFO] [stdout] ...
[INFO] [stdout] 1135 |                   let mut in_comment=at>0&&edit_rows[at-1].is_comment;
[INFO] [stdout]      |                       ^^^^^^^^^^^^^^
[INFO] [stdout]      = note: this warning originates in the macro `syntax_struct` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/main.rs:1135:21
[INFO] [stdout]      |
[INFO] [stdout]  426 | / syntax_struct! {
[INFO] [stdout]  427 | |     struct RustHighlight{
[INFO] [stdout]  428 | |         extensions:["rs"],
[INFO] [stdout]  429 | |         file_type:"rust",
[INFO] [stdout] ...    |
[INFO] [stdout]  444 | | }
[INFO] [stdout]      | |_- in this macro invocation
[INFO] [stdout] ...
[INFO] [stdout] 1135 |                   let mut in_comment=at>0&&edit_rows[at-1].is_comment;
[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]      = note: this warning originates in the macro `syntax_struct` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `in_comment`
[INFO] [stdout]     --> src/main.rs:1135:21
[INFO] [stdout]      |
[INFO] [stdout]  426 | / syntax_struct! {
[INFO] [stdout]  427 | |     struct RustHighlight{
[INFO] [stdout]  428 | |         extensions:["rs"],
[INFO] [stdout]  429 | |         file_type:"rust",
[INFO] [stdout] ...    |
[INFO] [stdout]  444 | | }
[INFO] [stdout]      | |_- in this macro invocation
[INFO] [stdout] ...
[INFO] [stdout] 1135 |                   let mut in_comment=at>0&&edit_rows[at-1].is_comment;
[INFO] [stdout]      |                       ^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout] help: `in_comment` is captured in macro and introduced a unused variable
[INFO] [stdout]     --> src/main.rs:1135:21
[INFO] [stdout]      |
[INFO] [stdout]  426 | / syntax_struct! {
[INFO] [stdout]  427 | |     struct RustHighlight{
[INFO] [stdout]  428 | |         extensions:["rs"],
[INFO] [stdout]  429 | |         file_type:"rust",
[INFO] [stdout] ...    |
[INFO] [stdout]  444 | | }
[INFO] [stdout]      | |_- in this macro invocation
[INFO] [stdout] ...
[INFO] [stdout] 1135 |                   let mut in_comment=at>0&&edit_rows[at-1].is_comment;
[INFO] [stdout]      |                       ^^^^^^^^^^^^^^
[INFO] [stdout]      = note: this warning originates in the macro `syntax_struct` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `mutil_comment` is never used
[INFO] [stdout]   --> src/main.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | trait SyntaxHighlight {
[INFO] [stdout]    |       --------------- method in this trait
[INFO] [stdout] 40 |     fn mutil_comment(&self) -> Option<(&str, &str)>;
[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 `get_render` is never used
[INFO] [stdout]    --> src/main.rs:285:8
[INFO] [stdout]     |
[INFO] [stdout] 182 | impl EditRows {
[INFO] [stdout]     | ------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 285 |     fn get_render(&self, at: usize) -> &String {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `mutil_comment` is never read
[INFO] [stdout]     --> src/main.rs:1094:13
[INFO] [stdout]      |
[INFO] [stdout]  426 | / syntax_struct! {
[INFO] [stdout]  427 | |     struct RustHighlight{
[INFO] [stdout]      | |            ------------- field in this struct
[INFO] [stdout]  428 | |         extensions:["rs"],
[INFO] [stdout]  429 | |         file_type:"rust",
[INFO] [stdout] ...    |
[INFO] [stdout]  444 | | }
[INFO] [stdout]      | |_- in this macro invocation
[INFO] [stdout] ...
[INFO] [stdout] 1094 |               mutil_comment:Option<(&'static str,&'static str)>
[INFO] [stdout]      |               ^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this warning originates in the macro `syntax_struct` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:214:17
[INFO] [stdout]     |
[INFO] [stdout] 214 |                 file.write_all(contents.as_bytes());
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 214 |                 let _ = file.write_all(contents.as_bytes());
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `mutil_comment` is never used
[INFO] [stdout]   --> src/main.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | trait SyntaxHighlight {
[INFO] [stdout]    |       --------------- method in this trait
[INFO] [stdout] 40 |     fn mutil_comment(&self) -> Option<(&str, &str)>;
[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 `get_render` is never used
[INFO] [stdout]    --> src/main.rs:285:8
[INFO] [stdout]     |
[INFO] [stdout] 182 | impl EditRows {
[INFO] [stdout]     | ------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 285 |     fn get_render(&self, at: usize) -> &String {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `mutil_comment` is never read
[INFO] [stdout]     --> src/main.rs:1094:13
[INFO] [stdout]      |
[INFO] [stdout]  426 | / syntax_struct! {
[INFO] [stdout]  427 | |     struct RustHighlight{
[INFO] [stdout]      | |            ------------- field in this struct
[INFO] [stdout]  428 | |         extensions:["rs"],
[INFO] [stdout]  429 | |         file_type:"rust",
[INFO] [stdout] ...    |
[INFO] [stdout]  444 | | }
[INFO] [stdout]      | |_- in this macro invocation
[INFO] [stdout] ...
[INFO] [stdout] 1094 |               mutil_comment:Option<(&'static str,&'static str)>
[INFO] [stdout]      |               ^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this warning originates in the macro `syntax_struct` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:214:17
[INFO] [stdout]     |
[INFO] [stdout] 214 |                 file.write_all(contents.as_bytes());
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 214 |                 let _ = file.write_all(contents.as_bytes());
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.65s
[INFO] running `Command { std: "docker" "inspect" "fcd0d6a0096d908ef8b943682743bbad43f31402a3b20b8db712ba1b18696161", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcd0d6a0096d908ef8b943682743bbad43f31402a3b20b8db712ba1b18696161", kill_on_drop: false }`
[INFO] [stdout] fcd0d6a0096d908ef8b943682743bbad43f31402a3b20b8db712ba1b18696161
