[INFO] cloning repository https://github.com/AIABHISHEK/rusty-shell
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AIABHISHEK/rusty-shell" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAIABHISHEK%2Frusty-shell", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAIABHISHEK%2Frusty-shell'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 78414b360b1accbd7caf10d79b3f7bd370835eff
[INFO] testing AIABHISHEK/rusty-shell against master#733b47ea4b1b86216f14ef56e49440c33933f230+rustflags=-Copt-level=3 for pr-138759
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAIABHISHEK%2Frusty-shell" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/AIABHISHEK/rusty-shell
[INFO] finished tweaking git repo https://github.com/AIABHISHEK/rusty-shell
[INFO] tweaked toml for git repo https://github.com/AIABHISHEK/rusty-shell written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/AIABHISHEK/rusty-shell on toolchain 733b47ea4b1b86216f14ef56e49440c33933f230
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/AIABHISHEK/rusty-shell 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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f3a5e4e809a9a076c880fe4365e30bf0a5053001ca70c53fcdb3163c18daf55a
[INFO] running `Command { std: "docker" "start" "-a" "f3a5e4e809a9a076c880fe4365e30bf0a5053001ca70c53fcdb3163c18daf55a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f3a5e4e809a9a076c880fe4365e30bf0a5053001ca70c53fcdb3163c18daf55a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3a5e4e809a9a076c880fe4365e30bf0a5053001ca70c53fcdb3163c18daf55a", kill_on_drop: false }`
[INFO] [stdout] f3a5e4e809a9a076c880fe4365e30bf0a5053001ca70c53fcdb3163c18daf55a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d41c8350cea8806315fce9cd27658cb3595010e6b86cf27274a35e0349c63fad
[INFO] running `Command { std: "docker" "start" "-a" "d41c8350cea8806315fce9cd27658cb3595010e6b86cf27274a35e0349c63fad", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.173
[INFO] [stderr]    Compiling nix v0.29.0
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling unicode-width v0.2.1
[INFO] [stderr]    Compiling syn v2.0.103
[INFO] [stderr]    Compiling rustix v1.0.7
[INFO] [stderr]    Compiling nibble_vec v0.1.0
[INFO] [stderr]    Compiling radix_trie v0.2.1
[INFO] [stderr]    Compiling fd-lock v4.0.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling rustyline v15.0.0
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling codecrafters-shell v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/shell.rs:5:26
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rustyline::history::{self, History, MemHistory, SearchDirection};
[INFO] [stdout]   |                          ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `history::DefaultHistory`
[INFO] [stdout]  --> src/shell.rs:6:17
[INFO] [stdout]   |
[INFO] [stdout] 6 | use rustyline::{history::DefaultHistory, CompletionType, Config, Editor};
[INFO] [stdout]   |                 ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `stdin` and `stdout`
[INFO] [stdout]   --> src/shell.rs:13:15
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::io::{stdin, stdout, BufRead, BufReader, Write};
[INFO] [stdout]    |               ^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/builtins.rs:2:26
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rustyline::history::{self, History, MemHistory, SearchDirection};
[INFO] [stdout]   |                          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env::args`
[INFO] [stdout]  --> src/builtins.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::env::args;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::stdout`
[INFO] [stdout]  --> src/builtins.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::io::stdout;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::Output`
[INFO] [stdout]   --> src/builtins.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::process::Output;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread::spawn`
[INFO] [stdout]   --> src/builtins.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use std::thread::spawn;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around pattern
[INFO] [stdout]    --> src/builtins.rs:263:13
[INFO] [stdout]     |
[INFO] [stdout] 263 |             (som) => {
[INFO] [stdout]     |             ^   ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 263 -             (som) => {
[INFO] [stdout] 263 +             som => {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rustyline::history::History`
[INFO] [stdout]  --> src/completer.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rustyline::history::History;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/shell.rs:59:21
[INFO] [stdout]    |
[INFO] [stdout] 59 |                 Err(e) => {}
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/shell.rs:62:13
[INFO] [stdout]    |
[INFO] [stdout] 62 |         Err(e) => {}
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]   --> src/shell.rs:67:17
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let mut input = String::new();
[INFO] [stdout]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/shell.rs:103:25
[INFO] [stdout]     |
[INFO] [stdout] 103 |                     Err(e) => {}
[INFO] [stdout]     |                         ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/shell.rs:130:37
[INFO] [stdout]     |
[INFO] [stdout] 130 | ...                   Err(e) => {}
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/shell.rs:289:17
[INFO] [stdout]     |
[INFO] [stdout] 289 |             Err(e) => {}
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/shell.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let mut mh = MemHistory::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] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/shell.rs:67:13
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let mut input = String::new();
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output_`
[INFO] [stdout]   --> src/builtins.rs:29:16
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub fn pwd_cmd(output_: &mut Vec<String>) {
[INFO] [stdout]    |                ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_output_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]   --> src/builtins.rs:41:17
[INFO] [stdout]    |
[INFO] [stdout] 41 |             Err(result) => println!("cd: {}: No such file or directory", dir.trim()),
[INFO] [stdout]    |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]   --> src/builtins.rs:42:16
[INFO] [stdout]    |
[INFO] [stdout] 42 |             Ok(r) => {}
[INFO] [stdout]    |                ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output_`
[INFO] [stdout]   --> src/builtins.rs:37:35
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub fn cd_cmd(args: &Vec<String>, output_: &mut Vec<String>) {
[INFO] [stdout]    |                                   ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_output_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sliced_args`
[INFO] [stdout]   --> src/builtins.rs:70:21
[INFO] [stdout]    |
[INFO] [stdout] 70 |             let mut sliced_args: Vec<String> = Vec::new();
[INFO] [stdout]    |                     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sliced_args`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `redirect`
[INFO] [stdout]   --> src/builtins.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 60 |     redirect: &mut RedirectType,
[INFO] [stdout]    |     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_redirect`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/builtins.rs:69:17
[INFO] [stdout]    |
[INFO] [stdout] 69 |             let mut cmd_args: &Vec<String> = args;
[INFO] [stdout]    |                 ----^^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/builtins.rs:70:17
[INFO] [stdout]    |
[INFO] [stdout] 70 |             let mut sliced_args: Vec<String> = Vec::new();
[INFO] [stdout]    |                 ----^^^^^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `som`
[INFO] [stdout]    --> src/builtins.rs:263:14
[INFO] [stdout]     |
[INFO] [stdout] 263 |             (som) => {
[INFO] [stdout]     |              ^^^ help: if this is intentional, prefix it with an underscore: `_som`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output`
[INFO] [stdout]    --> src/builtins.rs:271:33
[INFO] [stdout]     |
[INFO] [stdout] 271 |                 if let Some(ref output) = prev_builtin_output {
[INFO] [stdout]     |                                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err_`
[INFO] [stdout]    --> src/builtins.rs:187:5
[INFO] [stdout]     |
[INFO] [stdout] 187 |     err_: &mut String,
[INFO] [stdout]     |     ^^^^ help: if this is intentional, prefix it with an underscore: `_err_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `redirect`
[INFO] [stdout]    --> src/builtins.rs:188:5
[INFO] [stdout]     |
[INFO] [stdout] 188 |     redirect: &mut RedirectType,
[INFO] [stdout]     |     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_redirect`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/builtins.rs:339:21
[INFO] [stdout]     |
[INFO] [stdout] 339 |                 Err(e) => {}
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/builtins.rs:335:29
[INFO] [stdout]     |
[INFO] [stdout] 335 | ...                   history.add(l.clone().as_str());
[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)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 335 |                             let _ = history.add(l.clone().as_str());
[INFO] [stdout]     |                             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 41.81s
[INFO] running `Command { std: "docker" "inspect" "d41c8350cea8806315fce9cd27658cb3595010e6b86cf27274a35e0349c63fad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d41c8350cea8806315fce9cd27658cb3595010e6b86cf27274a35e0349c63fad", kill_on_drop: false }`
[INFO] [stdout] d41c8350cea8806315fce9cd27658cb3595010e6b86cf27274a35e0349c63fad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bbaa400ae7523c8ff5814f46d53057d4b798b413f1b770a4bc69f78d2ecf37e1
[INFO] running `Command { std: "docker" "start" "-a" "bbaa400ae7523c8ff5814f46d53057d4b798b413f1b770a4bc69f78d2ecf37e1", kill_on_drop: false }`
[INFO] [stderr]    Compiling codecrafters-shell v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/shell.rs:5:26
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rustyline::history::{self, History, MemHistory, SearchDirection};
[INFO] [stdout]   |                          ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `history::DefaultHistory`
[INFO] [stdout]  --> src/shell.rs:6:17
[INFO] [stdout]   |
[INFO] [stdout] 6 | use rustyline::{history::DefaultHistory, CompletionType, Config, Editor};
[INFO] [stdout]   |                 ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `stdin` and `stdout`
[INFO] [stdout]   --> src/shell.rs:13:15
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::io::{stdin, stdout, BufRead, BufReader, Write};
[INFO] [stdout]    |               ^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/builtins.rs:2:26
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rustyline::history::{self, History, MemHistory, SearchDirection};
[INFO] [stdout]   |                          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env::args`
[INFO] [stdout]  --> src/builtins.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::env::args;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::stdout`
[INFO] [stdout]  --> src/builtins.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::io::stdout;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::Output`
[INFO] [stdout]   --> src/builtins.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::process::Output;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread::spawn`
[INFO] [stdout]   --> src/builtins.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use std::thread::spawn;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around pattern
[INFO] [stdout]    --> src/builtins.rs:263:13
[INFO] [stdout]     |
[INFO] [stdout] 263 |             (som) => {
[INFO] [stdout]     |             ^   ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 263 -             (som) => {
[INFO] [stdout] 263 +             som => {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rustyline::history::History`
[INFO] [stdout]  --> src/completer.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rustyline::history::History;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/shell.rs:59:21
[INFO] [stdout]    |
[INFO] [stdout] 59 |                 Err(e) => {}
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/shell.rs:62:13
[INFO] [stdout]    |
[INFO] [stdout] 62 |         Err(e) => {}
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]   --> src/shell.rs:67:17
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let mut input = String::new();
[INFO] [stdout]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/shell.rs:103:25
[INFO] [stdout]     |
[INFO] [stdout] 103 |                     Err(e) => {}
[INFO] [stdout]     |                         ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/shell.rs:130:37
[INFO] [stdout]     |
[INFO] [stdout] 130 | ...                   Err(e) => {}
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/shell.rs:289:17
[INFO] [stdout]     |
[INFO] [stdout] 289 |             Err(e) => {}
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/shell.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let mut mh = MemHistory::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] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/shell.rs:67:13
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let mut input = String::new();
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output_`
[INFO] [stdout]   --> src/builtins.rs:29:16
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub fn pwd_cmd(output_: &mut Vec<String>) {
[INFO] [stdout]    |                ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_output_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]   --> src/builtins.rs:41:17
[INFO] [stdout]    |
[INFO] [stdout] 41 |             Err(result) => println!("cd: {}: No such file or directory", dir.trim()),
[INFO] [stdout]    |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]   --> src/builtins.rs:42:16
[INFO] [stdout]    |
[INFO] [stdout] 42 |             Ok(r) => {}
[INFO] [stdout]    |                ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output_`
[INFO] [stdout]   --> src/builtins.rs:37:35
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub fn cd_cmd(args: &Vec<String>, output_: &mut Vec<String>) {
[INFO] [stdout]    |                                   ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_output_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sliced_args`
[INFO] [stdout]   --> src/builtins.rs:70:21
[INFO] [stdout]    |
[INFO] [stdout] 70 |             let mut sliced_args: Vec<String> = Vec::new();
[INFO] [stdout]    |                     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sliced_args`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `redirect`
[INFO] [stdout]   --> src/builtins.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 60 |     redirect: &mut RedirectType,
[INFO] [stdout]    |     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_redirect`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/builtins.rs:69:17
[INFO] [stdout]    |
[INFO] [stdout] 69 |             let mut cmd_args: &Vec<String> = args;
[INFO] [stdout]    |                 ----^^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/builtins.rs:70:17
[INFO] [stdout]    |
[INFO] [stdout] 70 |             let mut sliced_args: Vec<String> = Vec::new();
[INFO] [stdout]    |                 ----^^^^^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `som`
[INFO] [stdout]    --> src/builtins.rs:263:14
[INFO] [stdout]     |
[INFO] [stdout] 263 |             (som) => {
[INFO] [stdout]     |              ^^^ help: if this is intentional, prefix it with an underscore: `_som`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output`
[INFO] [stdout]    --> src/builtins.rs:271:33
[INFO] [stdout]     |
[INFO] [stdout] 271 |                 if let Some(ref output) = prev_builtin_output {
[INFO] [stdout]     |                                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err_`
[INFO] [stdout]    --> src/builtins.rs:187:5
[INFO] [stdout]     |
[INFO] [stdout] 187 |     err_: &mut String,
[INFO] [stdout]     |     ^^^^ help: if this is intentional, prefix it with an underscore: `_err_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `redirect`
[INFO] [stdout]    --> src/builtins.rs:188:5
[INFO] [stdout]     |
[INFO] [stdout] 188 |     redirect: &mut RedirectType,
[INFO] [stdout]     |     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_redirect`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/builtins.rs:339:21
[INFO] [stdout]     |
[INFO] [stdout] 339 |                 Err(e) => {}
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/builtins.rs:335:29
[INFO] [stdout]     |
[INFO] [stdout] 335 | ...                   history.add(l.clone().as_str());
[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)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 335 |                             let _ = history.add(l.clone().as_str());
[INFO] [stdout]     |                             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `Command { std: "docker" "inspect" "bbaa400ae7523c8ff5814f46d53057d4b798b413f1b770a4bc69f78d2ecf37e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbaa400ae7523c8ff5814f46d53057d4b798b413f1b770a4bc69f78d2ecf37e1", kill_on_drop: false }`
[INFO] [stdout] bbaa400ae7523c8ff5814f46d53057d4b798b413f1b770a4bc69f78d2ecf37e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3739bbaaebc0ca0e0883f42fc092d30df01ebe111e1c30b4bb654a4da38e5244
[INFO] running `Command { std: "docker" "start" "-a" "3739bbaaebc0ca0e0883f42fc092d30df01ebe111e1c30b4bb654a4da38e5244", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `self`
[INFO] [stderr]  --> src/shell.rs:5:26
[INFO] [stderr]   |
[INFO] [stderr] 5 | use rustyline::history::{self, History, MemHistory, SearchDirection};
[INFO] [stderr]   |                          ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `history::DefaultHistory`
[INFO] [stderr]  --> src/shell.rs:6:17
[INFO] [stderr]   |
[INFO] [stderr] 6 | use rustyline::{history::DefaultHistory, CompletionType, Config, Editor};
[INFO] [stderr]   |                 ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `stdin` and `stdout`
[INFO] [stderr]   --> src/shell.rs:13:15
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::io::{stdin, stdout, BufRead, BufReader, Write};
[INFO] [stderr]    |               ^^^^^  ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self`
[INFO] [stderr]  --> src/builtins.rs:2:26
[INFO] [stderr]   |
[INFO] [stderr] 2 | use rustyline::history::{self, History, MemHistory, SearchDirection};
[INFO] [stderr]   |                          ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::env::args`
[INFO] [stderr]  --> src/builtins.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::env::args;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::stdout`
[INFO] [stderr]  --> src/builtins.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::io::stdout;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::process::Output`
[INFO] [stderr]   --> src/builtins.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 | use std::process::Output;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::thread::spawn`
[INFO] [stderr]   --> src/builtins.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 | use std::thread::spawn;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around pattern
[INFO] [stderr]    --> src/builtins.rs:263:13
[INFO] [stderr]     |
[INFO] [stderr] 263 |             (som) => {
[INFO] [stderr]     |             ^   ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 263 -             (som) => {
[INFO] [stderr] 263 +             som => {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rustyline::history::History`
[INFO] [stderr]  --> src/completer.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use rustyline::history::History;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/shell.rs:59:21
[INFO] [stderr]    |
[INFO] [stderr] 59 |                 Err(e) => {}
[INFO] [stderr]    |                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/shell.rs:62:13
[INFO] [stderr]    |
[INFO] [stderr] 62 |         Err(e) => {}
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `input`
[INFO] [stderr]   --> src/shell.rs:67:17
[INFO] [stderr]    |
[INFO] [stderr] 67 |         let mut input = String::new();
[INFO] [stderr]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/shell.rs:103:25
[INFO] [stderr]     |
[INFO] [stderr] 103 |                     Err(e) => {}
[INFO] [stderr]     |                         ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/shell.rs:130:37
[INFO] [stderr]     |
[INFO] [stderr] 130 | ...                   Err(e) => {}
[INFO] [stderr]     |                           ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/shell.rs:289:17
[INFO] [stderr]     |
[INFO] [stderr] 289 |             Err(e) => {}
[INFO] [stderr]     |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/shell.rs:39:9
[INFO] [stderr]    |
[INFO] [stderr] 39 |     let mut mh = MemHistory::new();
[INFO] [stderr]    |         ----^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/shell.rs:67:13
[INFO] [stderr]    |
[INFO] [stderr] 67 |         let mut input = String::new();
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `output_`
[INFO] [stderr]   --> src/builtins.rs:29:16
[INFO] [stderr]    |
[INFO] [stderr] 29 | pub fn pwd_cmd(output_: &mut Vec<String>) {
[INFO] [stderr]    |                ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_output_`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `result`
[INFO] [stderr]   --> src/builtins.rs:41:17
[INFO] [stderr]    |
[INFO] [stderr] 41 |             Err(result) => println!("cd: {}: No such file or directory", dir.trim()),
[INFO] [stderr]    |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `r`
[INFO] [stderr]   --> src/builtins.rs:42:16
[INFO] [stderr]    |
[INFO] [stderr] 42 |             Ok(r) => {}
[INFO] [stderr]    |                ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `output_`
[INFO] [stderr]   --> src/builtins.rs:37:35
[INFO] [stderr]    |
[INFO] [stderr] 37 | pub fn cd_cmd(args: &Vec<String>, output_: &mut Vec<String>) {
[INFO] [stderr]    |                                   ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_output_`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sliced_args`
[INFO] [stderr]   --> src/builtins.rs:70:21
[INFO] [stderr]    |
[INFO] [stderr] 70 |             let mut sliced_args: Vec<String> = Vec::new();
[INFO] [stderr]    |                     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sliced_args`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `redirect`
[INFO] [stderr]   --> src/builtins.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 |     redirect: &mut RedirectType,
[INFO] [stderr]    |     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_redirect`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/builtins.rs:69:17
[INFO] [stderr]    |
[INFO] [stderr] 69 |             let mut cmd_args: &Vec<String> = args;
[INFO] [stderr]    |                 ----^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/builtins.rs:70:17
[INFO] [stderr]    |
[INFO] [stderr] 70 |             let mut sliced_args: Vec<String> = Vec::new();
[INFO] [stderr]    |                 ----^^^^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `som`
[INFO] [stderr]    --> src/builtins.rs:263:14
[INFO] [stderr]     |
[INFO] [stderr] 263 |             (som) => {
[INFO] [stderr]     |              ^^^ help: if this is intentional, prefix it with an underscore: `_som`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `output`
[INFO] [stderr]    --> src/builtins.rs:271:33
[INFO] [stderr]     |
[INFO] [stderr] 271 |                 if let Some(ref output) = prev_builtin_output {
[INFO] [stderr]     |                                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err_`
[INFO] [stderr]    --> src/builtins.rs:187:5
[INFO] [stderr]     |
[INFO] [stderr] 187 |     err_: &mut String,
[INFO] [stderr]     |     ^^^^ help: if this is intentional, prefix it with an underscore: `_err_`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `redirect`
[INFO] [stderr]    --> src/builtins.rs:188:5
[INFO] [stderr]     |
[INFO] [stderr] 188 |     redirect: &mut RedirectType,
[INFO] [stderr]     |     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_redirect`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/builtins.rs:339:21
[INFO] [stderr]     |
[INFO] [stderr] 339 |                 Err(e) => {}
[INFO] [stderr]     |                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/builtins.rs:335:29
[INFO] [stderr]     |
[INFO] [stderr] 335 | ...                   history.add(l.clone().as_str());
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 335 |                             let _ = history.add(l.clone().as_str());
[INFO] [stderr]     |                             +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `codecrafters-shell` (bin "codecrafters-shell" test) generated 32 warnings (run `cargo fix --bin "codecrafters-shell" --tests` to apply 13 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/codecrafters_shell-de89861d0c52c990)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3739bbaaebc0ca0e0883f42fc092d30df01ebe111e1c30b4bb654a4da38e5244", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3739bbaaebc0ca0e0883f42fc092d30df01ebe111e1c30b4bb654a4da38e5244", kill_on_drop: false }`
[INFO] [stdout] 3739bbaaebc0ca0e0883f42fc092d30df01ebe111e1c30b4bb654a4da38e5244
