[INFO] cloning repository https://github.com/corslyn/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/corslyn/rust-shell" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcorslyn%2Frust-shell", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcorslyn%2Frust-shell'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9fdf0ebf17fcd4bb480ee3f9f029630e91785f58
[INFO] building corslyn/rust-shell against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcorslyn%2Frust-shell" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/corslyn/rust-shell on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/corslyn/rust-shell
[INFO] finished tweaking git repo https://github.com/corslyn/rust-shell
[INFO] tweaked toml for git repo https://github.com/corslyn/rust-shell written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/corslyn/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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 286048a7f33d4dcfde77d98c20d59a51802bdad6998d6767ca9229a07c393088
[INFO] running `Command { std: "docker" "start" "-a" "286048a7f33d4dcfde77d98c20d59a51802bdad6998d6767ca9229a07c393088", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "286048a7f33d4dcfde77d98c20d59a51802bdad6998d6767ca9229a07c393088", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "286048a7f33d4dcfde77d98c20d59a51802bdad6998d6767ca9229a07c393088", kill_on_drop: false }`
[INFO] [stdout] 286048a7f33d4dcfde77d98c20d59a51802bdad6998d6767ca9229a07c393088
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Dtail-expr-drop-order" "-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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 93edc85c0ae0994afe7a9303dc1be64bb72f6b5f4e68447e9d793b11f8d8a917
[INFO] running `Command { std: "docker" "start" "-a" "93edc85c0ae0994afe7a9303dc1be64bb72f6b5f4e68447e9d793b11f8d8a917", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-shell v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `found_path`
[INFO] [stdout]   --> src/commands.rs:99:21
[INFO] [stdout]    |
[INFO] [stdout] 99 |         if let Some(found_path) = ShellCommands::check_in_path(command, &path) {
[INFO] [stdout]    |                     ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_found_path`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BLACK` is never used
[INFO] [stdout]  --> src/colors.rs:6:15
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub const BLACK: &str = "\x1b[30m";
[INFO] [stdout]   |               ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `RED` is never used
[INFO] [stdout]  --> src/colors.rs:7:15
[INFO] [stdout]   |
[INFO] [stdout] 7 |     pub const RED: &str = "\x1b[31m";
[INFO] [stdout]   |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `YELLOW` is never used
[INFO] [stdout]  --> src/colors.rs:9:15
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub const YELLOW: &str = "\x1b[33m";
[INFO] [stdout]   |               ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MAGENTA` is never used
[INFO] [stdout]   --> src/colors.rs:11:15
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub const MAGENTA: &str = "\x1b[35m";
[INFO] [stdout]    |               ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `CYAN` is never used
[INFO] [stdout]   --> src/colors.rs:12:15
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub const CYAN: &str = "\x1b[36m";
[INFO] [stdout]    |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `WHITE` is never used
[INFO] [stdout]   --> src/colors.rs:13:15
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub const WHITE: &str = "\x1b[37m";
[INFO] [stdout]    |               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BG_BLACK` is never used
[INFO] [stdout]   --> src/colors.rs:16:15
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub const BG_BLACK: &str = "\x1b[40m";
[INFO] [stdout]    |               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BG_RED` is never used
[INFO] [stdout]   --> src/colors.rs:17:15
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub const BG_RED: &str = "\x1b[41m";
[INFO] [stdout]    |               ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BG_GREEN` is never used
[INFO] [stdout]   --> src/colors.rs:18:15
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub const BG_GREEN: &str = "\x1b[42m";
[INFO] [stdout]    |               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BG_YELLOW` is never used
[INFO] [stdout]   --> src/colors.rs:19:15
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub const BG_YELLOW: &str = "\x1b[43m";
[INFO] [stdout]    |               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BG_BLUE` is never used
[INFO] [stdout]   --> src/colors.rs:20:15
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub const BG_BLUE: &str = "\x1b[44m";
[INFO] [stdout]    |               ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BG_MAGENTA` is never used
[INFO] [stdout]   --> src/colors.rs:21:15
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub const BG_MAGENTA: &str = "\x1b[45m";
[INFO] [stdout]    |               ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BG_CYAN` is never used
[INFO] [stdout]   --> src/colors.rs:22:15
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub const BG_CYAN: &str = "\x1b[46m";
[INFO] [stdout]    |               ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BG_WHITE` is never used
[INFO] [stdout]   --> src/colors.rs:23:15
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub const BG_WHITE: &str = "\x1b[47m";
[INFO] [stdout]    |               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BOLD` is never used
[INFO] [stdout]   --> src/colors.rs:26:15
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub const BOLD: &str = "\x1b[1m";
[INFO] [stdout]    |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `UNDERLINE` is never used
[INFO] [stdout]   --> src/colors.rs:27:15
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub const UNDERLINE: &str = "\x1b[4m";
[INFO] [stdout]    |               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/commands.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |     Unknown(String),
[INFO] [stdout]    |     ------- ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 18 |     Unknown(()),
[INFO] [stdout]    |             ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/commands.rs:55:13
[INFO] [stdout]    |
[INFO] [stdout] 55 |             env::set_current_dir(env::var("HOME").unwrap());
[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] 55 |             let _ = env::set_current_dir(env::var("HOME").unwrap());
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `Command { std: "docker" "inspect" "93edc85c0ae0994afe7a9303dc1be64bb72f6b5f4e68447e9d793b11f8d8a917", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93edc85c0ae0994afe7a9303dc1be64bb72f6b5f4e68447e9d793b11f8d8a917", kill_on_drop: false }`
[INFO] [stdout] 93edc85c0ae0994afe7a9303dc1be64bb72f6b5f4e68447e9d793b11f8d8a917
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Dtail-expr-drop-order" "-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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5e09060b830a0643a2b6d2be0aceee747d70d20260e3ef637348145ad3e5ce9e
[INFO] running `Command { std: "docker" "start" "-a" "5e09060b830a0643a2b6d2be0aceee747d70d20260e3ef637348145ad3e5ce9e", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-shell v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `found_path`
[INFO] [stdout]   --> src/commands.rs:99:21
[INFO] [stdout]    |
[INFO] [stdout] 99 |         if let Some(found_path) = ShellCommands::check_in_path(command, &path) {
[INFO] [stdout]    |                     ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_found_path`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BLACK` is never used
[INFO] [stdout]  --> src/colors.rs:6:15
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub const BLACK: &str = "\x1b[30m";
[INFO] [stdout]   |               ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `RED` is never used
[INFO] [stdout]  --> src/colors.rs:7:15
[INFO] [stdout]   |
[INFO] [stdout] 7 |     pub const RED: &str = "\x1b[31m";
[INFO] [stdout]   |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `YELLOW` is never used
[INFO] [stdout]  --> src/colors.rs:9:15
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub const YELLOW: &str = "\x1b[33m";
[INFO] [stdout]   |               ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MAGENTA` is never used
[INFO] [stdout]   --> src/colors.rs:11:15
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub const MAGENTA: &str = "\x1b[35m";
[INFO] [stdout]    |               ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `CYAN` is never used
[INFO] [stdout]   --> src/colors.rs:12:15
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub const CYAN: &str = "\x1b[36m";
[INFO] [stdout]    |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `WHITE` is never used
[INFO] [stdout]   --> src/colors.rs:13:15
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub const WHITE: &str = "\x1b[37m";
[INFO] [stdout]    |               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BG_BLACK` is never used
[INFO] [stdout]   --> src/colors.rs:16:15
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub const BG_BLACK: &str = "\x1b[40m";
[INFO] [stdout]    |               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BG_RED` is never used
[INFO] [stdout]   --> src/colors.rs:17:15
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub const BG_RED: &str = "\x1b[41m";
[INFO] [stdout]    |               ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BG_GREEN` is never used
[INFO] [stdout]   --> src/colors.rs:18:15
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub const BG_GREEN: &str = "\x1b[42m";
[INFO] [stdout]    |               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BG_YELLOW` is never used
[INFO] [stdout]   --> src/colors.rs:19:15
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub const BG_YELLOW: &str = "\x1b[43m";
[INFO] [stdout]    |               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BG_BLUE` is never used
[INFO] [stdout]   --> src/colors.rs:20:15
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub const BG_BLUE: &str = "\x1b[44m";
[INFO] [stdout]    |               ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BG_MAGENTA` is never used
[INFO] [stdout]   --> src/colors.rs:21:15
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub const BG_MAGENTA: &str = "\x1b[45m";
[INFO] [stdout]    |               ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BG_CYAN` is never used
[INFO] [stdout]   --> src/colors.rs:22:15
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub const BG_CYAN: &str = "\x1b[46m";
[INFO] [stdout]    |               ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BG_WHITE` is never used
[INFO] [stdout]   --> src/colors.rs:23:15
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub const BG_WHITE: &str = "\x1b[47m";
[INFO] [stdout]    |               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BOLD` is never used
[INFO] [stdout]   --> src/colors.rs:26:15
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub const BOLD: &str = "\x1b[1m";
[INFO] [stdout]    |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `UNDERLINE` is never used
[INFO] [stdout]   --> src/colors.rs:27:15
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub const UNDERLINE: &str = "\x1b[4m";
[INFO] [stdout]    |               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/commands.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |     Unknown(String),
[INFO] [stdout]    |     ------- ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 18 |     Unknown(()),
[INFO] [stdout]    |             ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/commands.rs:55:13
[INFO] [stdout]    |
[INFO] [stdout] 55 |             env::set_current_dir(env::var("HOME").unwrap());
[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] 55 |             let _ = env::set_current_dir(env::var("HOME").unwrap());
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "5e09060b830a0643a2b6d2be0aceee747d70d20260e3ef637348145ad3e5ce9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e09060b830a0643a2b6d2be0aceee747d70d20260e3ef637348145ad3e5ce9e", kill_on_drop: false }`
[INFO] [stdout] 5e09060b830a0643a2b6d2be0aceee747d70d20260e3ef637348145ad3e5ce9e