[INFO] cloning repository https://github.com/SidmoGoesBrrr/rust-shell
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SidmoGoesBrrr/rust-shell" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSidmoGoesBrrr%2Frust-shell", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSidmoGoesBrrr%2Frust-shell'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0f4085716ca99daf52deffd90847573c2f808278
[INFO] checking SidmoGoesBrrr/rust-shell/0f4085716ca99daf52deffd90847573c2f808278 against master#8a65ee08296b36342bf7c3cdc15312ccbc357227 for pr-142704
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSidmoGoesBrrr%2Frust-shell" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SidmoGoesBrrr/rust-shell on toolchain 8a65ee08296b36342bf7c3cdc15312ccbc357227
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SidmoGoesBrrr/rust-shell
[INFO] finished tweaking git repo https://github.com/SidmoGoesBrrr/rust-shell
[INFO] tweaked toml for git repo https://github.com/SidmoGoesBrrr/rust-shell written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/SidmoGoesBrrr/rust-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" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fd-lock v3.0.13
[INFO] [stderr]   Downloaded rustyline v11.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0f523200742f4552a6ea1c0b8248e565938d37745bedea1b28d541535561b145
[INFO] running `Command { std: "docker" "start" "-a" "0f523200742f4552a6ea1c0b8248e565938d37745bedea1b28d541535561b145", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0f523200742f4552a6ea1c0b8248e565938d37745bedea1b28d541535561b145", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f523200742f4552a6ea1c0b8248e565938d37745bedea1b28d541535561b145", kill_on_drop: false }`
[INFO] [stdout] 0f523200742f4552a6ea1c0b8248e565938d37745bedea1b28d541535561b145
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3902b05abb2a105c97ea115d5e2bc03e88a96ac29f8cce0bf160a304a5836a61
[INFO] running `Command { std: "docker" "start" "-a" "3902b05abb2a105c97ea115d5e2bc03e88a96ac29f8cce0bf160a304a5836a61", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling rustix v0.38.44
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking smallvec v1.14.0
[INFO] [stderr]     Checking linux-raw-sys v0.4.15
[INFO] [stderr]     Checking bitflags v2.8.0
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking endian-type v0.1.2
[INFO] [stderr]    Compiling thiserror v1.0.63
[INFO] [stderr]     Checking regex-syntax v0.8.5
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]    Compiling anyhow v1.0.86
[INFO] [stderr]     Checking unicode-width v0.1.14
[INFO] [stderr]     Checking unicode-segmentation v1.12.0
[INFO] [stderr]     Checking utf8parse v0.2.2
[INFO] [stderr]     Checking log v0.4.25
[INFO] [stderr]     Checking bytes v1.7.1
[INFO] [stderr]     Checking nibble_vec v0.1.0
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]     Checking radix_trie v0.2.1
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.75
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking nix v0.26.4
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stderr]     Checking fd-lock v3.0.13
[INFO] [stderr]    Compiling thiserror-impl v1.0.63
[INFO] [stderr]     Checking regex v1.11.1
[INFO] [stderr]     Checking rustyline v11.0.0
[INFO] [stderr]     Checking codecrafters-shell v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> src/commands/exit.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> src/commands/exit.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]  --> src/commands/exit.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |         process::exit(0);
[INFO] [stdout]   |         ---------------- any code following this expression is unreachable
[INFO] [stdout] 8 |
[INFO] [stdout] 9 |         return true;
[INFO] [stdout]   |         ^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `next_char`
[INFO] [stdout]   --> src/util.rs:38:34
[INFO] [stdout]    |
[INFO] [stdout] 38 |                     if let Some(&next_char) = chars.peek() {
[INFO] [stdout]    |                                  ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_next_char`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RedirectionSpec` is never constructed
[INFO] [stdout]    --> src/shell.rs:324:24
[INFO] [stdout]     |
[INFO] [stdout] 324 |                 struct RedirectionSpec {
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `RedirectionSpec` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_command_and_redirections` is never used
[INFO] [stdout]    --> src/shell.rs:331:20
[INFO] [stdout]     |
[INFO] [stdout] 331 |                 fn parse_command_and_redirections(input: &str) -> (String, RedirectionSpec) {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_command_with_redirections` is never used
[INFO] [stdout]    --> src/shell.rs:375:20
[INFO] [stdout]     |
[INFO] [stdout] 375 |                 fn run_command_with_redirections(cmd: &str, redir: RedirectionSpec) {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `process_command` is never used
[INFO] [stdout]    --> src/shell.rs:423:20
[INFO] [stdout]     |
[INFO] [stdout] 423 |                 fn process_command(cmd: &str) {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_external_candidates` is never used
[INFO] [stdout]    --> src/shell.rs:436:20
[INFO] [stdout]     |
[INFO] [stdout] 436 |                 fn get_external_candidates(prefix: &str) -> Vec<String> {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest_common_prefix` is never used
[INFO] [stdout]    --> src/shell.rs:469:20
[INFO] [stdout]     |
[INFO] [stdout] 469 |                 fn longest_common_prefix(strings: &[String]) -> String {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyHelper` is never constructed
[INFO] [stdout]    --> src/shell.rs:499:24
[INFO] [stdout]     |
[INFO] [stdout] 499 |                 struct MyHelper {
[INFO] [stdout]     |                        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/shell.rs:505:24
[INFO] [stdout]     |
[INFO] [stdout] 504 |                 impl MyHelper {
[INFO] [stdout]     |                 ------------- associated function in this implementation
[INFO] [stdout] 505 |                     fn new() -> Self {
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `start_shell` is never used
[INFO] [stdout]    --> src/shell.rs:580:24
[INFO] [stdout]     |
[INFO] [stdout] 580 |                 pub fn start_shell() {
[INFO] [stdout]     |                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/shell.rs:290:17
[INFO] [stdout]     |
[INFO] [stdout] 290 |                 rl.add_history_entry(line.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] 290 |                 let _ = rl.add_history_entry(line.as_str());
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/shell.rs:590:33
[INFO] [stdout]     |
[INFO] [stdout] 590 | ...                   rl.add_history_entry(line.as_str());
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 590 |                                 let _ = rl.add_history_entry(line.as_str());
[INFO] [stdout]     |                                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]  --> src/commands/exit.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |         process::exit(0);
[INFO] [stdout]   |         ---------------- any code following this expression is unreachable
[INFO] [stdout] 8 |
[INFO] [stdout] 9 |         return true;
[INFO] [stdout]   |         ^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `next_char`
[INFO] [stdout]   --> src/util.rs:38:34
[INFO] [stdout]    |
[INFO] [stdout] 38 |                     if let Some(&next_char) = chars.peek() {
[INFO] [stdout]    |                                  ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_next_char`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RedirectionSpec` is never constructed
[INFO] [stdout]    --> src/shell.rs:324:24
[INFO] [stdout]     |
[INFO] [stdout] 324 |                 struct RedirectionSpec {
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `RedirectionSpec` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_command_and_redirections` is never used
[INFO] [stdout]    --> src/shell.rs:331:20
[INFO] [stdout]     |
[INFO] [stdout] 331 |                 fn parse_command_and_redirections(input: &str) -> (String, RedirectionSpec) {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_command_with_redirections` is never used
[INFO] [stdout]    --> src/shell.rs:375:20
[INFO] [stdout]     |
[INFO] [stdout] 375 |                 fn run_command_with_redirections(cmd: &str, redir: RedirectionSpec) {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `process_command` is never used
[INFO] [stdout]    --> src/shell.rs:423:20
[INFO] [stdout]     |
[INFO] [stdout] 423 |                 fn process_command(cmd: &str) {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_external_candidates` is never used
[INFO] [stdout]    --> src/shell.rs:436:20
[INFO] [stdout]     |
[INFO] [stdout] 436 |                 fn get_external_candidates(prefix: &str) -> Vec<String> {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest_common_prefix` is never used
[INFO] [stdout]    --> src/shell.rs:469:20
[INFO] [stdout]     |
[INFO] [stdout] 469 |                 fn longest_common_prefix(strings: &[String]) -> String {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyHelper` is never constructed
[INFO] [stdout]    --> src/shell.rs:499:24
[INFO] [stdout]     |
[INFO] [stdout] 499 |                 struct MyHelper {
[INFO] [stdout]     |                        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/shell.rs:505:24
[INFO] [stdout]     |
[INFO] [stdout] 504 |                 impl MyHelper {
[INFO] [stdout]     |                 ------------- associated function in this implementation
[INFO] [stdout] 505 |                     fn new() -> Self {
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `start_shell` is never used
[INFO] [stdout]    --> src/shell.rs:580:24
[INFO] [stdout]     |
[INFO] [stdout] 580 |                 pub fn start_shell() {
[INFO] [stdout]     |                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/shell.rs:290:17
[INFO] [stdout]     |
[INFO] [stdout] 290 |                 rl.add_history_entry(line.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] 290 |                 let _ = rl.add_history_entry(line.as_str());
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/shell.rs:590:33
[INFO] [stdout]     |
[INFO] [stdout] 590 | ...                   rl.add_history_entry(line.as_str());
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 590 |                                 let _ = rl.add_history_entry(line.as_str());
[INFO] [stdout]     |                                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.63s
[INFO] running `Command { std: "docker" "inspect" "3902b05abb2a105c97ea115d5e2bc03e88a96ac29f8cce0bf160a304a5836a61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3902b05abb2a105c97ea115d5e2bc03e88a96ac29f8cce0bf160a304a5836a61", kill_on_drop: false }`
[INFO] [stdout] 3902b05abb2a105c97ea115d5e2bc03e88a96ac29f8cce0bf160a304a5836a61
