[INFO] cloning repository https://github.com/C0RR1T/brainfuck
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/C0RR1T/brainfuck" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FC0RR1T%2Fbrainfuck", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FC0RR1T%2Fbrainfuck'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4a35484033dff1f452f42cec3155e7cfd7d9b547
[INFO] building C0RR1T/brainfuck against try#334963c956d25708feab489a3816ae63f639355d for pr-135216
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FC0RR1T%2Fbrainfuck" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/C0RR1T/brainfuck on toolchain 334963c956d25708feab489a3816ae63f639355d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+334963c956d25708feab489a3816ae63f639355d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/C0RR1T/brainfuck
[INFO] finished tweaking git repo https://github.com/C0RR1T/brainfuck
[INFO] tweaked toml for git repo https://github.com/C0RR1T/brainfuck written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/C0RR1T/brainfuck 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" "+334963c956d25708feab489a3816ae63f639355d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+334963c956d25708feab489a3816ae63f639355d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ad11b170d2cf6c9e23cf82bff46086fd8dba91494d379c17d6abba8d6f0b1b4d
[INFO] running `Command { std: "docker" "start" "-a" "ad11b170d2cf6c9e23cf82bff46086fd8dba91494d379c17d6abba8d6f0b1b4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad11b170d2cf6c9e23cf82bff46086fd8dba91494d379c17d6abba8d6f0b1b4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad11b170d2cf6c9e23cf82bff46086fd8dba91494d379c17d6abba8d6f0b1b4d", kill_on_drop: false }`
[INFO] [stdout] ad11b170d2cf6c9e23cf82bff46086fd8dba91494d379c17d6abba8d6f0b1b4d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+334963c956d25708feab489a3816ae63f639355d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b87ac7e95a9f57734160dfcc6b13bd79f762740eec5bdd4c4578cf9095cc9f1c
[INFO] running `Command { std: "docker" "start" "-a" "b87ac7e95a9f57734160dfcc6b13bd79f762740eec5bdd4c4578cf9095cc9f1c", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.96
[INFO] [stderr]    Compiling smallvec v1.8.0
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling lexer v0.1.0 (/opt/rustwide/workdir/lexer)
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling owo-colors v3.4.0
[INFO] [stderr]    Compiling serde_json v1.0.81
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]    Compiling os_str_bytes v6.1.0
[INFO] [stderr]    Compiling indexmap v1.8.2
[INFO] [stderr]    Compiling termcolor v1.1.3
[INFO] [stderr]    Compiling itoa v1.0.2
[INFO] [stderr]    Compiling ryu v1.0.10
[INFO] [stderr]    Compiling textwrap v0.15.0
[INFO] [stderr]    Compiling clap_lex v0.2.0
[INFO] [stderr]    Compiling peekmore v1.0.0
[INFO] [stderr]    Compiling parser v0.1.0 (/opt/rustwide/workdir/parser)
[INFO] [stdout] warning: methods `consume_elements`, `peek`, and `peek_nth` are never used
[INFO] [stdout]    --> parser/src/lib.rs:113:8
[INFO] [stdout]     |
[INFO] [stdout] 34  | impl Parser {
[INFO] [stdout]     | ----------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 113 |     fn consume_elements(&mut self, amount: usize) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 119 |     fn peek(&mut self) -> Option<LexerToken> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 123 |     fn peek_nth(&mut self, amount: usize) -> Option<LexerToken> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling include_dir_macros v0.7.2
[INFO] [stderr]    Compiling error-messages v0.1.0 (/opt/rustwide/workdir/error-messages)
[INFO] [stderr]    Compiling interpreter v0.2.0 (/opt/rustwide/workdir/interpreter)
[INFO] [stdout] warning: unused import: `owo_colors::OwoColorize`
[INFO] [stdout]  --> interpreter/src/lib.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use owo_colors::OwoColorize;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `stdout`
[INFO] [stdout]  --> interpreter/src/lib.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{stdout, Read, Write};
[INFO] [stdout]   |               ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Span`
[INFO] [stdout]  --> interpreter/src/lib.rs:6:18
[INFO] [stdout]   |
[INFO] [stdout] 6 | use lexer::{lex, Span};
[INFO] [stdout]   |                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ParserError`
[INFO] [stdout]  --> interpreter/src/lib.rs:7:35
[INFO] [stdout]   |
[INFO] [stdout] 7 | use parser::{Instruction, Parser, ParserError};
[INFO] [stdout]   |                                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling include_dir v0.7.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling clap_derive v3.1.18
[INFO] [stderr]    Compiling clap v3.1.18
[INFO] [stderr]    Compiling langfuck v0.1.0 (/opt/rustwide/workdir/langfuck)
[INFO] [stdout] warning: methods `peek` and `advance_cursor` are never used
[INFO] [stdout]    --> langfuck/src/main.rs:250:8
[INFO] [stdout]     |
[INFO] [stdout] 106 | impl<'a> Lexer<'a> {
[INFO] [stdout]     | ------------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 250 |     fn peek(&mut self) -> Option<&(usize, char)> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 282 |     fn advance_cursor(&mut self) -> Option<&(usize, char)> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.37s
[INFO] running `Command { std: "docker" "inspect" "b87ac7e95a9f57734160dfcc6b13bd79f762740eec5bdd4c4578cf9095cc9f1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b87ac7e95a9f57734160dfcc6b13bd79f762740eec5bdd4c4578cf9095cc9f1c", kill_on_drop: false }`
[INFO] [stdout] b87ac7e95a9f57734160dfcc6b13bd79f762740eec5bdd4c4578cf9095cc9f1c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+334963c956d25708feab489a3816ae63f639355d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4087c6bb74513611d08c12ece7095f269f63ce89ff834af1d61454d9e39b3d49
[INFO] running `Command { std: "docker" "start" "-a" "4087c6bb74513611d08c12ece7095f269f63ce89ff834af1d61454d9e39b3d49", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling parser v0.1.0 (/opt/rustwide/workdir/parser)
[INFO] [stderr]    Compiling lexer v0.1.0 (/opt/rustwide/workdir/lexer)
[INFO] [stderr]    Compiling error-messages v0.1.0 (/opt/rustwide/workdir/error-messages)
[INFO] [stdout] warning: methods `consume_elements`, `peek`, and `peek_nth` are never used
[INFO] [stdout]    --> parser/src/lib.rs:113:8
[INFO] [stdout]     |
[INFO] [stdout] 34  | impl Parser {
[INFO] [stdout]     | ----------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 113 |     fn consume_elements(&mut self, amount: usize) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 119 |     fn peek(&mut self) -> Option<LexerToken> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 123 |     fn peek_nth(&mut self, amount: usize) -> Option<LexerToken> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `owo_colors::OwoColorize`
[INFO] [stdout]  --> interpreter/src/lib.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use owo_colors::OwoColorize;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `stdout`
[INFO] [stdout]  --> interpreter/src/lib.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{stdout, Read, Write};
[INFO] [stdout]   |               ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Span`
[INFO] [stdout]  --> interpreter/src/lib.rs:6:18
[INFO] [stdout]   |
[INFO] [stdout] 6 | use lexer::{lex, Span};
[INFO] [stdout]   |                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ParserError`
[INFO] [stdout]  --> interpreter/src/lib.rs:7:35
[INFO] [stdout]   |
[INFO] [stdout] 7 | use parser::{Instruction, Parser, ParserError};
[INFO] [stdout]   |                                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling interpreter v0.2.0 (/opt/rustwide/workdir/interpreter)
[INFO] [stderr]    Compiling langfuck v0.1.0 (/opt/rustwide/workdir/langfuck)
[INFO] [stdout] warning: unused import: `owo_colors::OwoColorize`
[INFO] [stdout]  --> interpreter/src/lib.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use owo_colors::OwoColorize;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `stdout`
[INFO] [stdout]  --> interpreter/src/lib.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{stdout, Read, Write};
[INFO] [stdout]   |               ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Span`
[INFO] [stdout]  --> interpreter/src/lib.rs:6:18
[INFO] [stdout]   |
[INFO] [stdout] 6 | use lexer::{lex, Span};
[INFO] [stdout]   |                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ParserError`
[INFO] [stdout]  --> interpreter/src/lib.rs:7:35
[INFO] [stdout]   |
[INFO] [stdout] 7 | use parser::{Instruction, Parser, ParserError};
[INFO] [stdout]   |                                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> interpreter/src/lib.rs:85:9
[INFO] [stdout]    |
[INFO] [stdout] 85 |     let mut out = Vec::new();
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0382]: borrow of moved value: `out`
[INFO] [stdout]   --> interpreter/src/lib.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 85 |     let mut out = Vec::new();
[INFO] [stdout]    |         ------- move occurs because `out` has type `Vec<u8>`, which does not implement the `Copy` trait
[INFO] [stdout] 86 |     Interpreter::new(out).interpret(&parser::hello_world()[..]);
[INFO] [stdout]    |                      --- value moved here
[INFO] [stdout] 87 |     assert_eq!(
[INFO] [stdout] 88 |         out.iter().map(|x| *x as char).collect::<String>(),
[INFO] [stdout]    |         ^^^ value borrowed here after move
[INFO] [stdout]    |
[INFO] [stdout] note: consider changing this parameter type in method `new` to borrow instead if owning the value isn't necessary
[INFO] [stdout]   --> interpreter/src/lib.rs:16:24
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn new(output: W) -> Self
[INFO] [stdout]    |            ---         ^ this parameter takes ownership of the value
[INFO] [stdout]    |            |
[INFO] [stdout]    |            in this method
[INFO] [stdout]    = note: borrow occurs due to deref coercion to `[u8]`
[INFO] [stdout] help: consider cloning the value if the performance cost is acceptable
[INFO] [stdout]    |
[INFO] [stdout] 86 |     Interpreter::new(out.clone()).interpret(&parser::hello_world()[..]);
[INFO] [stdout]    |                         ++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0382`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `interpreter` (lib test) due to 1 previous error; 5 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: methods `consume_elements`, `peek`, and `peek_nth` are never used
[INFO] [stdout]    --> parser/src/lib.rs:113:8
[INFO] [stdout]     |
[INFO] [stdout] 34  | impl Parser {
[INFO] [stdout]     | ----------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 113 |     fn consume_elements(&mut self, amount: usize) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 119 |     fn peek(&mut self) -> Option<LexerToken> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 123 |     fn peek_nth(&mut self, amount: usize) -> Option<LexerToken> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `peek` and `advance_cursor` are never used
[INFO] [stdout]    --> langfuck/src/main.rs:250:8
[INFO] [stdout]     |
[INFO] [stdout] 106 | impl<'a> Lexer<'a> {
[INFO] [stdout]     | ------------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 250 |     fn peek(&mut self) -> Option<&(usize, char)> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 282 |     fn advance_cursor(&mut self) -> Option<&(usize, char)> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4087c6bb74513611d08c12ece7095f269f63ce89ff834af1d61454d9e39b3d49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4087c6bb74513611d08c12ece7095f269f63ce89ff834af1d61454d9e39b3d49", kill_on_drop: false }`
[INFO] [stdout] 4087c6bb74513611d08c12ece7095f269f63ce89ff834af1d61454d9e39b3d49
