[INFO] cloning repository https://github.com/ObiWanWheeler/rlox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ObiWanWheeler/rlox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FObiWanWheeler%2Frlox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FObiWanWheeler%2Frlox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 82702635c24e54b51e6500e305e94768cae82498
[INFO] checking ObiWanWheeler/rlox 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%2FObiWanWheeler%2Frlox" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ObiWanWheeler/rlox
[INFO] finished tweaking git repo https://github.com/ObiWanWheeler/rlox
[INFO] tweaked toml for git repo https://github.com/ObiWanWheeler/rlox written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ObiWanWheeler/rlox 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/ObiWanWheeler/rlox 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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 036a3e242731b67cde0fd739bbeab2bf881681eb5f98ef592d47009543644cf7
[INFO] running `Command { std: "docker" "start" "-a" "036a3e242731b67cde0fd739bbeab2bf881681eb5f98ef592d47009543644cf7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "036a3e242731b67cde0fd739bbeab2bf881681eb5f98ef592d47009543644cf7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "036a3e242731b67cde0fd739bbeab2bf881681eb5f98ef592d47009543644cf7", kill_on_drop: false }`
[INFO] [stdout] 036a3e242731b67cde0fd739bbeab2bf881681eb5f98ef592d47009543644cf7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 0278e6a887a892ba9637aca8fe1a673545576019e45f9805b0ca336f6d6bc135
[INFO] running `Command { std: "docker" "start" "-a" "0278e6a887a892ba9637aca8fe1a673545576019e45f9805b0ca336f6d6bc135", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling siphasher v0.3.10
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]     Checking os_str_bytes v6.1.0
[INFO] [stderr]    Compiling indexmap v1.8.2
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]     Checking clap_lex v0.2.0
[INFO] [stderr]    Compiling phf_shared v0.10.0
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling getrandom v0.2.6
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling phf_generator v0.10.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling clap_derive v3.1.18
[INFO] [stderr]    Compiling thiserror-impl v1.0.31
[INFO] [stderr]    Compiling phf_macros v0.10.0
[INFO] [stderr]     Checking phf v0.10.1
[INFO] [stderr]     Checking thiserror v1.0.31
[INFO] [stderr]     Checking clap v3.1.18
[INFO] [stderr]     Checking lox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | /     #[clap(short, long)]
[INFO] [stdout] 19 | |     file_path: Option<String>,
[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<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:8:73
[INFO] [stdout]    |
[INFO] [stdout]  8 |       fn visit_expr(&mut self, expr: &Expr) -> Result<String, ParseError> {
[INFO] [stdout]    |  _________________________________________________________________________^
[INFO] [stdout]  9 | |         match expr {
[INFO] [stdout] 10 | |             Expr::Binary {
[INFO] [stdout] 11 | |                 left,
[INFO] [stdout] ...  |
[INFO] [stdout] 43 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:9:9
[INFO] [stdout]    |
[INFO] [stdout]  9 | /         match expr {
[INFO] [stdout] 10 | |             Expr::Binary {
[INFO] [stdout] 11 | |                 left,
[INFO] [stdout] 12 | |                 right,
[INFO] [stdout] ...  |
[INFO] [stdout] 41 | |             _ => Ok(format!("haven't bothered to implement this pp yet"))
[INFO] [stdout] 42 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:14:18
[INFO] [stdout]    |
[INFO] [stdout] 14 |               } => Ok(format!(
[INFO] [stdout]    |  __________________^
[INFO] [stdout] 15 | |                 "({} {} {})",
[INFO] [stdout] 16 | |                 self.visit_expr(left)?,
[INFO] [stdout] 17 | |                 operator.raw,
[INFO] [stdout] 18 | |                 self.visit_expr(right)?
[INFO] [stdout] 19 | |             )),
[INFO] [stdout]    | |______________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, Infallible>, std::string::String>
[INFO] [stdout]   --> src/ast_printer.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 16 |                 self.visit_expr(left)?,
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 16 |                 self.visit_expr(left)?,
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 16 |                 self.visit_expr(left)?,
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, Infallible>, std::string::String>
[INFO] [stdout]   --> src/ast_printer.rs:18:17
[INFO] [stdout]    |
[INFO] [stdout] 18 |                 self.visit_expr(right)?
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:18:17
[INFO] [stdout]    |
[INFO] [stdout] 18 |                 self.visit_expr(right)?
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:18:17
[INFO] [stdout]    |
[INFO] [stdout] 18 |                 self.visit_expr(right)?
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:24:18
[INFO] [stdout]    |
[INFO] [stdout] 24 |               } => Ok(format!(
[INFO] [stdout]    |  __________________^
[INFO] [stdout] 25 | |                 "(){} {} {})",
[INFO] [stdout] 26 | |                 self.visit_expr(left)?,
[INFO] [stdout] 27 | |                 operator.raw,
[INFO] [stdout] 28 | |                 self.visit_expr(right)?
[INFO] [stdout] 29 | |             )),
[INFO] [stdout]    | |______________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, Infallible>, std::string::String>
[INFO] [stdout]   --> src/ast_printer.rs:26:17
[INFO] [stdout]    |
[INFO] [stdout] 26 |                 self.visit_expr(left)?,
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:26:17
[INFO] [stdout]    |
[INFO] [stdout] 26 |                 self.visit_expr(left)?,
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:26:17
[INFO] [stdout]    |
[INFO] [stdout] 26 |                 self.visit_expr(left)?,
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, Infallible>, std::string::String>
[INFO] [stdout]   --> src/ast_printer.rs:28:17
[INFO] [stdout]    |
[INFO] [stdout] 28 |                 self.visit_expr(right)?
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:28:17
[INFO] [stdout]    |
[INFO] [stdout] 28 |                 self.visit_expr(right)?
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:28:17
[INFO] [stdout]    |
[INFO] [stdout] 28 |                 self.visit_expr(right)?
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:30:46
[INFO] [stdout]    |
[INFO] [stdout] 30 |               Expr::Grouping { expression } => {
[INFO] [stdout]    |  ______________________________________________^
[INFO] [stdout] 31 | |                 Ok(format!("(group {})", self.visit_expr(expression)?))
[INFO] [stdout] 32 | |             }
[INFO] [stdout]    | |_____________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:31:17
[INFO] [stdout]    |
[INFO] [stdout] 31 |                 Ok(format!("(group {})", self.visit_expr(expression)?))
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, Infallible>, std::string::String>
[INFO] [stdout]   --> src/ast_printer.rs:31:42
[INFO] [stdout]    |
[INFO] [stdout] 31 |                 Ok(format!("(group {})", self.visit_expr(expression)?))
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:31:42
[INFO] [stdout]    |
[INFO] [stdout] 31 |                 Ok(format!("(group {})", self.visit_expr(expression)?))
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:31:42
[INFO] [stdout]    |
[INFO] [stdout] 31 |                 Ok(format!("(group {})", self.visit_expr(expression)?))
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:33:40
[INFO] [stdout]    |
[INFO] [stdout] 33 |             Expr::Literal { value } => Ok(format!("{:?}", value.clone())),
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:34:48
[INFO] [stdout]    |
[INFO] [stdout] 34 |               Expr::Unary { operator, right } => {
[INFO] [stdout]    |  ________________________________________________^
[INFO] [stdout] 35 | |                 Ok(format!("({}{})", operator.raw, self.visit_expr(right)?))
[INFO] [stdout] 36 | |             }
[INFO] [stdout]    | |_____________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:35:17
[INFO] [stdout]    |
[INFO] [stdout] 35 |                 Ok(format!("({}{})", operator.raw, self.visit_expr(right)?))
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, Infallible>, std::string::String>
[INFO] [stdout]   --> src/ast_printer.rs:35:52
[INFO] [stdout]    |
[INFO] [stdout] 35 |                 Ok(format!("({}{})", operator.raw, self.visit_expr(right)?))
[INFO] [stdout]    |                                                    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:35:52
[INFO] [stdout]    |
[INFO] [stdout] 35 |                 Ok(format!("({}{})", operator.raw, self.visit_expr(right)?))
[INFO] [stdout]    |                                                    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:35:52
[INFO] [stdout]    |
[INFO] [stdout] 35 |                 Ok(format!("({}{})", operator.raw, self.visit_expr(right)?))
[INFO] [stdout]    |                                                    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:37:40
[INFO] [stdout]    |
[INFO] [stdout] 37 |             Expr::Variable { name } => Ok(name.raw.clone()),
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:38:45
[INFO] [stdout]    |
[INFO] [stdout] 38 |               Expr::Assign { name, value } => {
[INFO] [stdout]    |  _____________________________________________^
[INFO] [stdout] 39 | |                 Ok(format!("{} = {}", name.raw, self.visit_expr(value)?))
[INFO] [stdout] 40 | |             }
[INFO] [stdout]    | |_____________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:39:17
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 Ok(format!("{} = {}", name.raw, self.visit_expr(value)?))
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, Infallible>, std::string::String>
[INFO] [stdout]   --> src/ast_printer.rs:39:49
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 Ok(format!("{} = {}", name.raw, self.visit_expr(value)?))
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:39:49
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 Ok(format!("{} = {}", name.raw, self.visit_expr(value)?))
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:39:49
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 Ok(format!("{} = {}", name.raw, self.visit_expr(value)?))
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:41:18
[INFO] [stdout]    |
[INFO] [stdout] 41 |             _ => Ok(format!("haven't bothered to implement this pp yet"))
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lox` (bin "lox") due to 35 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | /     #[clap(short, long)]
[INFO] [stdout] 19 | |     file_path: Option<String>,
[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<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:8:73
[INFO] [stdout]    |
[INFO] [stdout]  8 |       fn visit_expr(&mut self, expr: &Expr) -> Result<String, ParseError> {
[INFO] [stdout]    |  _________________________________________________________________________^
[INFO] [stdout]  9 | |         match expr {
[INFO] [stdout] 10 | |             Expr::Binary {
[INFO] [stdout] 11 | |                 left,
[INFO] [stdout] ...  |
[INFO] [stdout] 43 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:9:9
[INFO] [stdout]    |
[INFO] [stdout]  9 | /         match expr {
[INFO] [stdout] 10 | |             Expr::Binary {
[INFO] [stdout] 11 | |                 left,
[INFO] [stdout] 12 | |                 right,
[INFO] [stdout] ...  |
[INFO] [stdout] 41 | |             _ => Ok(format!("haven't bothered to implement this pp yet"))
[INFO] [stdout] 42 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:14:18
[INFO] [stdout]    |
[INFO] [stdout] 14 |               } => Ok(format!(
[INFO] [stdout]    |  __________________^
[INFO] [stdout] 15 | |                 "({} {} {})",
[INFO] [stdout] 16 | |                 self.visit_expr(left)?,
[INFO] [stdout] 17 | |                 operator.raw,
[INFO] [stdout] 18 | |                 self.visit_expr(right)?
[INFO] [stdout] 19 | |             )),
[INFO] [stdout]    | |______________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, Infallible>, std::string::String>
[INFO] [stdout]   --> src/ast_printer.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 16 |                 self.visit_expr(left)?,
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 16 |                 self.visit_expr(left)?,
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 16 |                 self.visit_expr(left)?,
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, Infallible>, std::string::String>
[INFO] [stdout]   --> src/ast_printer.rs:18:17
[INFO] [stdout]    |
[INFO] [stdout] 18 |                 self.visit_expr(right)?
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:18:17
[INFO] [stdout]    |
[INFO] [stdout] 18 |                 self.visit_expr(right)?
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:18:17
[INFO] [stdout]    |
[INFO] [stdout] 18 |                 self.visit_expr(right)?
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:24:18
[INFO] [stdout]    |
[INFO] [stdout] 24 |               } => Ok(format!(
[INFO] [stdout]    |  __________________^
[INFO] [stdout] 25 | |                 "(){} {} {})",
[INFO] [stdout] 26 | |                 self.visit_expr(left)?,
[INFO] [stdout] 27 | |                 operator.raw,
[INFO] [stdout] 28 | |                 self.visit_expr(right)?
[INFO] [stdout] 29 | |             )),
[INFO] [stdout]    | |______________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, Infallible>, std::string::String>
[INFO] [stdout]   --> src/ast_printer.rs:26:17
[INFO] [stdout]    |
[INFO] [stdout] 26 |                 self.visit_expr(left)?,
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:26:17
[INFO] [stdout]    |
[INFO] [stdout] 26 |                 self.visit_expr(left)?,
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:26:17
[INFO] [stdout]    |
[INFO] [stdout] 26 |                 self.visit_expr(left)?,
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, Infallible>, std::string::String>
[INFO] [stdout]   --> src/ast_printer.rs:28:17
[INFO] [stdout]    |
[INFO] [stdout] 28 |                 self.visit_expr(right)?
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:28:17
[INFO] [stdout]    |
[INFO] [stdout] 28 |                 self.visit_expr(right)?
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:28:17
[INFO] [stdout]    |
[INFO] [stdout] 28 |                 self.visit_expr(right)?
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:30:46
[INFO] [stdout]    |
[INFO] [stdout] 30 |               Expr::Grouping { expression } => {
[INFO] [stdout]    |  ______________________________________________^
[INFO] [stdout] 31 | |                 Ok(format!("(group {})", self.visit_expr(expression)?))
[INFO] [stdout] 32 | |             }
[INFO] [stdout]    | |_____________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:31:17
[INFO] [stdout]    |
[INFO] [stdout] 31 |                 Ok(format!("(group {})", self.visit_expr(expression)?))
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, Infallible>, std::string::String>
[INFO] [stdout]   --> src/ast_printer.rs:31:42
[INFO] [stdout]    |
[INFO] [stdout] 31 |                 Ok(format!("(group {})", self.visit_expr(expression)?))
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:31:42
[INFO] [stdout]    |
[INFO] [stdout] 31 |                 Ok(format!("(group {})", self.visit_expr(expression)?))
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:31:42
[INFO] [stdout]    |
[INFO] [stdout] 31 |                 Ok(format!("(group {})", self.visit_expr(expression)?))
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:33:40
[INFO] [stdout]    |
[INFO] [stdout] 33 |             Expr::Literal { value } => Ok(format!("{:?}", value.clone())),
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:34:48
[INFO] [stdout]    |
[INFO] [stdout] 34 |               Expr::Unary { operator, right } => {
[INFO] [stdout]    |  ________________________________________________^
[INFO] [stdout] 35 | |                 Ok(format!("({}{})", operator.raw, self.visit_expr(right)?))
[INFO] [stdout] 36 | |             }
[INFO] [stdout]    | |_____________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:35:17
[INFO] [stdout]    |
[INFO] [stdout] 35 |                 Ok(format!("({}{})", operator.raw, self.visit_expr(right)?))
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, Infallible>, std::string::String>
[INFO] [stdout]   --> src/ast_printer.rs:35:52
[INFO] [stdout]    |
[INFO] [stdout] 35 |                 Ok(format!("({}{})", operator.raw, self.visit_expr(right)?))
[INFO] [stdout]    |                                                    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:35:52
[INFO] [stdout]    |
[INFO] [stdout] 35 |                 Ok(format!("({}{})", operator.raw, self.visit_expr(right)?))
[INFO] [stdout]    |                                                    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:35:52
[INFO] [stdout]    |
[INFO] [stdout] 35 |                 Ok(format!("({}{})", operator.raw, self.visit_expr(right)?))
[INFO] [stdout]    |                                                    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:37:40
[INFO] [stdout]    |
[INFO] [stdout] 37 |             Expr::Variable { name } => Ok(name.raw.clone()),
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:38:45
[INFO] [stdout]    |
[INFO] [stdout] 38 |               Expr::Assign { name, value } => {
[INFO] [stdout]    |  _____________________________________________^
[INFO] [stdout] 39 | |                 Ok(format!("{} = {}", name.raw, self.visit_expr(value)?))
[INFO] [stdout] 40 | |             }
[INFO] [stdout]    | |_____________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:39:17
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 Ok(format!("{} = {}", name.raw, self.visit_expr(value)?))
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, Infallible>, std::string::String>
[INFO] [stdout]   --> src/ast_printer.rs:39:49
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 Ok(format!("{} = {}", name.raw, self.visit_expr(value)?))
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:39:49
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 Ok(format!("{} = {}", name.raw, self.visit_expr(value)?))
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:39:49
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 Ok(format!("{} = {}", name.raw, self.visit_expr(value)?))
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ast_printer.rs:41:18
[INFO] [stdout]    |
[INFO] [stdout] 41 |             _ => Ok(format!("haven't bothered to implement this pp yet"))
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lox` (bin "lox" test) due to 35 previous errors
[INFO] running `Command { std: "docker" "inspect" "0278e6a887a892ba9637aca8fe1a673545576019e45f9805b0ca336f6d6bc135", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0278e6a887a892ba9637aca8fe1a673545576019e45f9805b0ca336f6d6bc135", kill_on_drop: false }`
[INFO] [stdout] 0278e6a887a892ba9637aca8fe1a673545576019e45f9805b0ca336f6d6bc135
