[INFO] fetching crate easy-repl 0.2.1...
[INFO] checking easy-repl-0.2.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate easy-repl 0.2.1 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate easy-repl 0.2.1
[INFO] finished tweaking crates.io crate easy-repl 0.2.1
[INFO] tweaked toml for crates.io crate easy-repl 0.2.1 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate easy-repl 0.2.1 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 crates.io crate easy-repl 0.2.1 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 0cad2c19df927ae3156935792099284f14b9501c53922e79e763b92f56bad99a
[INFO] running `Command { std: "docker" "start" "-a" "0cad2c19df927ae3156935792099284f14b9501c53922e79e763b92f56bad99a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0cad2c19df927ae3156935792099284f14b9501c53922e79e763b92f56bad99a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0cad2c19df927ae3156935792099284f14b9501c53922e79e763b92f56bad99a", kill_on_drop: false }`
[INFO] [stdout] 0cad2c19df927ae3156935792099284f14b9501c53922e79e763b92f56bad99a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 990e6d6fd38796134f12fddbaebfa87995f12c2df24e9d84c844af3469104b5d
[INFO] running `Command { std: "docker" "start" "-a" "990e6d6fd38796134f12fddbaebfa87995f12c2df24e9d84c844af3469104b5d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling memoffset v0.6.3
[INFO] [stderr]    Compiling crossbeam-utils v0.8.4
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling io-lifetimes v0.7.2
[INFO] [stderr]    Compiling syn v1.0.71
[INFO] [stderr]    Compiling regex-syntax v0.6.27
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling rustix v0.35.7
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking linux-raw-sys v0.0.46
[INFO] [stderr]     Checking crossbeam-epoch v0.9.4
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking nibble_vec v0.1.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling anyhow v1.0.40
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking radix_trie v0.2.1
[INFO] [stderr]     Checking smawk v0.3.1
[INFO] [stderr]     Checking utf8parse v0.2.0
[INFO] [stderr]     Checking unicode-segmentation v1.7.1
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking nix v0.23.1
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking shell-words v1.0.0
[INFO] [stderr]    Compiling regex v1.4.6
[INFO] [stderr]     Checking fd-lock v3.0.6
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling rustyline-derive v0.6.0
[INFO] [stderr]     Checking rustyline v9.1.2
[INFO] [stderr]    Compiling unicode-linebreak v0.1.2
[INFO] [stderr]     Checking fid-rs v0.1.1
[INFO] [stderr]     Checking louds-rs v0.4.0
[INFO] [stderr]     Checking trie-rs v0.1.1
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]     Checking easy-repl v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/command.rs:151:39
[INFO] [stdout]     |
[INFO] [stdout] 151 |                     if let Err(err) = args[i].parse::<$type>() {
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 277 |         let validator = validator!(i32, f32, String);
[INFO] [stdout]     |                         ---------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]     = note: this error originates in the macro `validator` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/command.rs:151:39
[INFO] [stdout]     |
[INFO] [stdout] 151 |                     if let Err(err) = args[i].parse::<$type>() {
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 336 |         let cmd = command!("Example cmd", (:i32, :String, :f32) => |_x, _s, _y| { Ok(CommandStatus::Done) });
[INFO] [stdout]     |                   ------------------------------------------------------------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `$crate::validator` which comes from the expansion of the macro `command` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/command.rs:234:26
[INFO] [stdout]     |
[INFO] [stdout] 234 |             $($parsed;)* $args[$num].parse::<$type>().unwrap();
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 336 |         let cmd = command!("Example cmd", (:i32, :String, :f32) => |_x, _s, _y| { Ok(CommandStatus::Done) });
[INFO] [stdout]     |                   ------------------------------------------------------------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `command` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/command.rs:151:39
[INFO] [stdout]     |
[INFO] [stdout] 151 |                       if let Err(err) = args[i].parse::<$type>() {
[INFO] [stdout]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 349 |           let cmd = command! {
[INFO] [stdout]     |  ___________________-
[INFO] [stdout] 350 | |             "Example cmd",
[INFO] [stdout] 351 | |             (number:i32, name : String, :f32) => |_x, _s, _y| Ok(CommandStatus::Done)
[INFO] [stdout] 352 | |         };
[INFO] [stdout]     | |_________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `$crate::validator` which comes from the expansion of the macro `command` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/command.rs:234:26
[INFO] [stdout]     |
[INFO] [stdout] 234 |               $($parsed;)* $args[$num].parse::<$type>().unwrap();
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 349 |           let cmd = command! {
[INFO] [stdout]     |  ___________________-
[INFO] [stdout] 350 | |             "Example cmd",
[INFO] [stdout] 351 | |             (number:i32, name : String, :f32) => |_x, _s, _y| Ok(CommandStatus::Done)
[INFO] [stdout] 352 | |         };
[INFO] [stdout]     | |_________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `command` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/command.rs:151:39
[INFO] [stdout]     |
[INFO] [stdout] 151 |                     if let Err(err) = args[i].parse::<$type>() {
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/repl.rs:418:28
[INFO] [stdout]     |
[INFO] [stdout] 418 |             .add("name_x", command!("", (a: String) => |_| Ok(CommandStatus::Done)))
[INFO] [stdout]     |                            -------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `$crate::validator` which comes from the expansion of the macro `command` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/command.rs:234:26
[INFO] [stdout]     |
[INFO] [stdout] 234 |             $($parsed;)* $args[$num].parse::<$type>().unwrap();
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/repl.rs:418:28
[INFO] [stdout]     |
[INFO] [stdout] 418 |             .add("name_x", command!("", (a: String) => |_| Ok(CommandStatus::Done)))
[INFO] [stdout]     |                            -------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `command` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> examples/matryoshka.rs:8:15
[INFO] [stdout]    |
[INFO] [stdout]  8 |       let new = command! {
[INFO] [stdout]    |  _______________^
[INFO] [stdout]  9 | |         "Enter new repl",
[INFO] [stdout] 10 | |         (name:String) => |name: String| {
[INFO] [stdout] 11 | |             let name = cloned_prompt.clone() + &name;
[INFO] [stdout] ...  |
[INFO] [stdout] 16 | |     };
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]    = note: this error originates in the macro `$crate::validator` which comes from the expansion of the macro `command` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> examples/matryoshka.rs:8:15
[INFO] [stdout]    |
[INFO] [stdout]  8 |       let new = command! {
[INFO] [stdout]    |  _______________^
[INFO] [stdout]  9 | |         "Enter new repl",
[INFO] [stdout] 10 | |         (name:String) => |name: String| {
[INFO] [stdout] 11 | |             let name = cloned_prompt.clone() + &name;
[INFO] [stdout] ...  |
[INFO] [stdout] 16 | |     };
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `command` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> examples/overload.rs:20:26
[INFO] [stdout]    |
[INFO] [stdout] 20 |           .add("describe", command! {
[INFO] [stdout]    |  __________________________^
[INFO] [stdout] 21 | |             "Variant 3",
[INFO] [stdout] 22 | |             (a: i32, b: String) => |a, b| {
[INFO] [stdout] 23 | |                 println!("An integer `{}` and a string `{}`", a, b);
[INFO] [stdout] ...  |
[INFO] [stdout] 26 | |         })
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]    = note: this error originates in the macro `$crate::validator` which comes from the expansion of the macro `command` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> examples/overload.rs:20:26
[INFO] [stdout]    |
[INFO] [stdout] 20 |           .add("describe", command! {
[INFO] [stdout]    |  __________________________^
[INFO] [stdout] 21 | |             "Variant 3",
[INFO] [stdout] 22 | |             (a: i32, b: String) => |a, b| {
[INFO] [stdout] 23 | |                 println!("An integer `{}` and a string `{}`", a, b);
[INFO] [stdout] ...  |
[INFO] [stdout] 26 | |         })
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `command` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `easy-repl` (lib test) due to 7 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `easy-repl` (example "matryoshka") due to 2 previous errors
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> examples/minimal.rs:6:23
[INFO] [stdout]    |
[INFO] [stdout]  6 |           .add("hello", command! {
[INFO] [stdout]    |  _______________________^
[INFO] [stdout]  7 | |             "Say hello",
[INFO] [stdout]  8 | |             (name: String) => |name| {
[INFO] [stdout]  9 | |                 println!("Hello {}!", name);
[INFO] [stdout] ...  |
[INFO] [stdout] 12 | |         })
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]    = note: this error originates in the macro `$crate::validator` which comes from the expansion of the macro `command` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `easy-repl` (example "overload") due to 2 previous errors
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> examples/minimal.rs:6:23
[INFO] [stdout]    |
[INFO] [stdout]  6 |           .add("hello", command! {
[INFO] [stdout]    |  _______________________^
[INFO] [stdout]  7 | |             "Say hello",
[INFO] [stdout]  8 | |             (name: String) => |name| {
[INFO] [stdout]  9 | |                 println!("Hello {}!", name);
[INFO] [stdout] ...  |
[INFO] [stdout] 12 | |         })
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `command` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `easy-repl` (example "minimal") due to 2 previous errors
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> examples/from_str.rs:9:20
[INFO] [stdout]    |
[INFO] [stdout]  9 |           .add("ls", command! {
[INFO] [stdout]    |  ____________________^
[INFO] [stdout] 10 | |             "List files in a directory",
[INFO] [stdout] 11 | |             (dir: PathBuf) => |dir: PathBuf| {
[INFO] [stdout] 12 | |                 for entry in dir.read_dir()? {
[INFO] [stdout] ...  |
[INFO] [stdout] 17 | |         })
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]    = note: this error originates in the macro `$crate::validator` which comes from the expansion of the macro `command` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> examples/from_str.rs:9:20
[INFO] [stdout]    |
[INFO] [stdout]  9 |           .add("ls", command! {
[INFO] [stdout]    |  ____________________^
[INFO] [stdout] 10 | |             "List files in a directory",
[INFO] [stdout] 11 | |             (dir: PathBuf) => |dir: PathBuf| {
[INFO] [stdout] 12 | |                 for entry in dir.read_dir()? {
[INFO] [stdout] ...  |
[INFO] [stdout] 17 | |         })
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `command` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `easy-repl` (example "from_str") due to 2 previous errors
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> examples/errors.rs:20:23
[INFO] [stdout]    |
[INFO] [stdout] 20 |           .add("error", command! {
[INFO] [stdout]    |  _______________________^
[INFO] [stdout] 21 | |             "Command with recoverable error handled by the REPL",
[INFO] [stdout] 22 | |             (text:String) => |text| {
[INFO] [stdout] 23 | |                 may_throw(text)?;
[INFO] [stdout] 24 | |                 Ok(CommandStatus::Done)
[INFO] [stdout] 25 | |             },
[INFO] [stdout] 26 | |         })
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]    = note: this error originates in the macro `$crate::validator` which comes from the expansion of the macro `command` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> examples/errors.rs:20:23
[INFO] [stdout]    |
[INFO] [stdout] 20 |           .add("error", command! {
[INFO] [stdout]    |  _______________________^
[INFO] [stdout] 21 | |             "Command with recoverable error handled by the REPL",
[INFO] [stdout] 22 | |             (text:String) => |text| {
[INFO] [stdout] 23 | |                 may_throw(text)?;
[INFO] [stdout] 24 | |                 Ok(CommandStatus::Done)
[INFO] [stdout] 25 | |             },
[INFO] [stdout] 26 | |         })
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `command` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> examples/errors.rs:27:26
[INFO] [stdout]    |
[INFO] [stdout] 27 |           .add("critical", command! {
[INFO] [stdout]    |  __________________________^
[INFO] [stdout] 28 | |             "Command returns a critical error that must be handled outside of REPL",
[INFO] [stdout] 29 | |             (text:String) => |text| {
[INFO] [stdout] ...  |
[INFO] [stdout] 41 | |             },
[INFO] [stdout] 42 | |         })
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `$crate::validator` which comes from the expansion of the macro `command` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> examples/errors.rs:27:26
[INFO] [stdout]    |
[INFO] [stdout] 27 |           .add("critical", command! {
[INFO] [stdout]    |  __________________________^
[INFO] [stdout] 28 | |             "Command returns a critical error that must be handled outside of REPL",
[INFO] [stdout] 29 | |             (text:String) => |text| {
[INFO] [stdout] ...  |
[INFO] [stdout] 41 | |             },
[INFO] [stdout] 42 | |         })
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `command` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `easy-repl` (example "errors") due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "990e6d6fd38796134f12fddbaebfa87995f12c2df24e9d84c844af3469104b5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "990e6d6fd38796134f12fddbaebfa87995f12c2df24e9d84c844af3469104b5d", kill_on_drop: false }`
[INFO] [stdout] 990e6d6fd38796134f12fddbaebfa87995f12c2df24e9d84c844af3469104b5d
