[INFO] cloning repository https://github.com/SpectralProject/Arcutils
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SpectralProject/Arcutils" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSpectralProject%2FArcutils", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSpectralProject%2FArcutils'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ab9d2b2c63f6d7afbd4ed39eb180777d5d997fa6
[INFO] building SpectralProject/Arcutils 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%2FSpectralProject%2FArcutils" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SpectralProject/Arcutils 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] removed /workspace/builds/worker-2-tc1/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/SpectralProject/Arcutils
[INFO] finished tweaking git repo https://github.com/SpectralProject/Arcutils
[INFO] tweaked toml for git repo https://github.com/SpectralProject/Arcutils written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/SpectralProject/Arcutils 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded const_format_proc_macros v0.2.22
[INFO] [stderr]   Downloaded const_format v0.2.23
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 7a158408f6e8567f841bc74de01554d8239e6838924f51ed4b088a5dfda0c9d8
[INFO] running `Command { std: "docker" "start" "-a" "7a158408f6e8567f841bc74de01554d8239e6838924f51ed4b088a5dfda0c9d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7a158408f6e8567f841bc74de01554d8239e6838924f51ed4b088a5dfda0c9d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a158408f6e8567f841bc74de01554d8239e6838924f51ed4b088a5dfda0c9d8", kill_on_drop: false }`
[INFO] [stdout] 7a158408f6e8567f841bc74de01554d8239e6838924f51ed4b088a5dfda0c9d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 219b02ddab36efb878af156b0602b1a682234df5be5e3abb9c8bbeebf0c7f7b2
[INFO] running `Command { std: "docker" "start" "-a" "219b02ddab36efb878af156b0602b1a682234df5be5e3abb9c8bbeebf0c7f7b2", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling unicode-xid v0.2.3
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling const_format_proc_macros v0.2.22
[INFO] [stderr]    Compiling const_format v0.2.23
[INFO] [stderr]    Compiling arcutils v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `error::Error`
[INFO] [stdout]  --> src/builder.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     error::Error,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `CARGO` is never used
[INFO] [stdout]   --> src/builder.rs:10:7
[INFO] [stdout]    |
[INFO] [stdout] 10 | const CARGO: &str = "cargo";
[INFO] [stdout]    |       ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `RUSTC` is never used
[INFO] [stdout]   --> src/builder.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 | const RUSTC: &str = "rustc";
[INFO] [stdout]    |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `RUSTC_TARGET` is never used
[INFO] [stdout]   --> src/builder.rs:12:7
[INFO] [stdout]    |
[INFO] [stdout] 12 | const RUSTC_TARGET: &str = "--target=";
[INFO] [stdout]    |       ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `RUSTC_FLAG` is never used
[INFO] [stdout]   --> src/builder.rs:13:7
[INFO] [stdout]    |
[INFO] [stdout] 13 | const RUSTC_FLAG: &str = "--";
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `OPTIMIZATION_PROFILE` is never used
[INFO] [stdout]   --> src/builder.rs:14:7
[INFO] [stdout]    |
[INFO] [stdout] 14 | const OPTIMIZATION_PROFILE: &[&str] = &["--release", "--debug", "--test"];
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `RISCV64_UNKNOWN_ELF` is never used
[INFO] [stdout]   --> src/builder.rs:27:7
[INFO] [stdout]    |
[INFO] [stdout] 27 | const RISCV64_UNKNOWN_ELF: &'static str = "riscv64-unknown-elf";
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `AARCH64_NONE_ELF` is never used
[INFO] [stdout]   --> src/builder.rs:28:7
[INFO] [stdout]    |
[INFO] [stdout] 28 | const AARCH64_NONE_ELF: &'static str = "aarch64-none-elf";
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ASSEMBLER` is never used
[INFO] [stdout]   --> src/builder.rs:52:7
[INFO] [stdout]    |
[INFO] [stdout] 52 | const ASSEMBLER: &str = "as";
[INFO] [stdout]    |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `LINKER` is never used
[INFO] [stdout]   --> src/builder.rs:53:7
[INFO] [stdout]    |
[INFO] [stdout] 53 | const LINKER: &str = "ld";
[INFO] [stdout]    |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `RISCV64_AS` is never used
[INFO] [stdout]   --> src/builder.rs:55:7
[INFO] [stdout]    |
[INFO] [stdout] 55 | const RISCV64_AS: &str = concatcp!(RISCV64_UNKNOWN_ELF, ASSEMBLER);
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `RISCV64_LD` is never used
[INFO] [stdout]   --> src/builder.rs:56:7
[INFO] [stdout]    |
[INFO] [stdout] 56 | const RISCV64_LD: &str = concatcp!(RISCV64_UNKNOWN_ELF, LINKER);
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `AARCH64_AS` is never used
[INFO] [stdout]   --> src/builder.rs:58:7
[INFO] [stdout]    |
[INFO] [stdout] 58 | const AARCH64_AS: &str = concatcp!(AARCH64_NONE_ELF, ASSEMBLER);
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `AARCH64_LD` is never used
[INFO] [stdout]   --> src/builder.rs:59:7
[INFO] [stdout]    |
[INFO] [stdout] 59 | const AARCH64_LD: &str = concatcp!(AARCH64_NONE_ELF, ASSEMBLER);
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `CARGO_COMMAND` should have a snake case name
[INFO] [stdout]   --> src/builder.rs:63:13
[INFO] [stdout]    |
[INFO] [stdout] 63 |     let mut CARGO_COMMAND = Command::new("cargo");
[INFO] [stdout]    |             ^^^^^^^^^^^^^ help: convert the identifier to snake case: `cargo_command`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `QEMU_COMMAND` should have a snake case name
[INFO] [stdout]    --> src/builder.rs:117:21
[INFO] [stdout]     |
[INFO] [stdout] 117 |             let mut QEMU_COMMAND = Command::new(QEMU_AARCH64);
[INFO] [stdout]     |                     ^^^^^^^^^^^^ help: convert the identifier to snake case: `qemu_command`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/arc.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 |     let mut build_target: BuildTarget = if args.contains(&"--arcboot".to_string()) {
[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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.23s
[INFO] running `Command { std: "docker" "inspect" "219b02ddab36efb878af156b0602b1a682234df5be5e3abb9c8bbeebf0c7f7b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "219b02ddab36efb878af156b0602b1a682234df5be5e3abb9c8bbeebf0c7f7b2", kill_on_drop: false }`
[INFO] [stdout] 219b02ddab36efb878af156b0602b1a682234df5be5e3abb9c8bbeebf0c7f7b2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 15400240a54734f7aa1c01b073d7fe8d4519ee37849edd67c26d58828e24b93b
[INFO] running `Command { std: "docker" "start" "-a" "15400240a54734f7aa1c01b073d7fe8d4519ee37849edd67c26d58828e24b93b", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `error::Error`
[INFO] [stdout]  --> src/builder.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     error::Error,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling arcutils v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: constant `CARGO` is never used
[INFO] [stdout]   --> src/builder.rs:10:7
[INFO] [stdout]    |
[INFO] [stdout] 10 | const CARGO: &str = "cargo";
[INFO] [stdout]    |       ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `RUSTC` is never used
[INFO] [stdout]   --> src/builder.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 | const RUSTC: &str = "rustc";
[INFO] [stdout]    |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `RUSTC_TARGET` is never used
[INFO] [stdout]   --> src/builder.rs:12:7
[INFO] [stdout]    |
[INFO] [stdout] 12 | const RUSTC_TARGET: &str = "--target=";
[INFO] [stdout]    |       ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `RUSTC_FLAG` is never used
[INFO] [stdout]   --> src/builder.rs:13:7
[INFO] [stdout]    |
[INFO] [stdout] 13 | const RUSTC_FLAG: &str = "--";
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `OPTIMIZATION_PROFILE` is never used
[INFO] [stdout]   --> src/builder.rs:14:7
[INFO] [stdout]    |
[INFO] [stdout] 14 | const OPTIMIZATION_PROFILE: &[&str] = &["--release", "--debug", "--test"];
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `RISCV64_UNKNOWN_ELF` is never used
[INFO] [stdout]   --> src/builder.rs:27:7
[INFO] [stdout]    |
[INFO] [stdout] 27 | const RISCV64_UNKNOWN_ELF: &'static str = "riscv64-unknown-elf";
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `AARCH64_NONE_ELF` is never used
[INFO] [stdout]   --> src/builder.rs:28:7
[INFO] [stdout]    |
[INFO] [stdout] 28 | const AARCH64_NONE_ELF: &'static str = "aarch64-none-elf";
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ASSEMBLER` is never used
[INFO] [stdout]   --> src/builder.rs:52:7
[INFO] [stdout]    |
[INFO] [stdout] 52 | const ASSEMBLER: &str = "as";
[INFO] [stdout]    |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `LINKER` is never used
[INFO] [stdout]   --> src/builder.rs:53:7
[INFO] [stdout]    |
[INFO] [stdout] 53 | const LINKER: &str = "ld";
[INFO] [stdout]    |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `RISCV64_AS` is never used
[INFO] [stdout]   --> src/builder.rs:55:7
[INFO] [stdout]    |
[INFO] [stdout] 55 | const RISCV64_AS: &str = concatcp!(RISCV64_UNKNOWN_ELF, ASSEMBLER);
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `RISCV64_LD` is never used
[INFO] [stdout]   --> src/builder.rs:56:7
[INFO] [stdout]    |
[INFO] [stdout] 56 | const RISCV64_LD: &str = concatcp!(RISCV64_UNKNOWN_ELF, LINKER);
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `AARCH64_AS` is never used
[INFO] [stdout]   --> src/builder.rs:58:7
[INFO] [stdout]    |
[INFO] [stdout] 58 | const AARCH64_AS: &str = concatcp!(AARCH64_NONE_ELF, ASSEMBLER);
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `AARCH64_LD` is never used
[INFO] [stdout]   --> src/builder.rs:59:7
[INFO] [stdout]    |
[INFO] [stdout] 59 | const AARCH64_LD: &str = concatcp!(AARCH64_NONE_ELF, ASSEMBLER);
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `CARGO_COMMAND` should have a snake case name
[INFO] [stdout]   --> src/builder.rs:63:13
[INFO] [stdout]    |
[INFO] [stdout] 63 |     let mut CARGO_COMMAND = Command::new("cargo");
[INFO] [stdout]    |             ^^^^^^^^^^^^^ help: convert the identifier to snake case: `cargo_command`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `QEMU_COMMAND` should have a snake case name
[INFO] [stdout]    --> src/builder.rs:117:21
[INFO] [stdout]     |
[INFO] [stdout] 117 |             let mut QEMU_COMMAND = Command::new(QEMU_AARCH64);
[INFO] [stdout]     |                     ^^^^^^^^^^^^ help: convert the identifier to snake case: `qemu_command`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `error::Error`
[INFO] [stdout]  --> src/builder.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     error::Error,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/arc.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 |     let mut build_target: BuildTarget = if args.contains(&"--arcboot".to_string()) {
[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: constant `CARGO` is never used
[INFO] [stdout]   --> src/builder.rs:10:7
[INFO] [stdout]    |
[INFO] [stdout] 10 | const CARGO: &str = "cargo";
[INFO] [stdout]    |       ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `RUSTC` is never used
[INFO] [stdout]   --> src/builder.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 | const RUSTC: &str = "rustc";
[INFO] [stdout]    |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `RUSTC_TARGET` is never used
[INFO] [stdout]   --> src/builder.rs:12:7
[INFO] [stdout]    |
[INFO] [stdout] 12 | const RUSTC_TARGET: &str = "--target=";
[INFO] [stdout]    |       ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `RUSTC_FLAG` is never used
[INFO] [stdout]   --> src/builder.rs:13:7
[INFO] [stdout]    |
[INFO] [stdout] 13 | const RUSTC_FLAG: &str = "--";
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `OPTIMIZATION_PROFILE` is never used
[INFO] [stdout]   --> src/builder.rs:14:7
[INFO] [stdout]    |
[INFO] [stdout] 14 | const OPTIMIZATION_PROFILE: &[&str] = &["--release", "--debug", "--test"];
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `RISCV64_UNKNOWN_ELF` is never used
[INFO] [stdout]   --> src/builder.rs:27:7
[INFO] [stdout]    |
[INFO] [stdout] 27 | const RISCV64_UNKNOWN_ELF: &'static str = "riscv64-unknown-elf";
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `AARCH64_NONE_ELF` is never used
[INFO] [stdout]   --> src/builder.rs:28:7
[INFO] [stdout]    |
[INFO] [stdout] 28 | const AARCH64_NONE_ELF: &'static str = "aarch64-none-elf";
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ASSEMBLER` is never used
[INFO] [stdout]   --> src/builder.rs:52:7
[INFO] [stdout]    |
[INFO] [stdout] 52 | const ASSEMBLER: &str = "as";
[INFO] [stdout]    |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `LINKER` is never used
[INFO] [stdout]   --> src/builder.rs:53:7
[INFO] [stdout]    |
[INFO] [stdout] 53 | const LINKER: &str = "ld";
[INFO] [stdout]    |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `RISCV64_AS` is never used
[INFO] [stdout]   --> src/builder.rs:55:7
[INFO] [stdout]    |
[INFO] [stdout] 55 | const RISCV64_AS: &str = concatcp!(RISCV64_UNKNOWN_ELF, ASSEMBLER);
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `RISCV64_LD` is never used
[INFO] [stdout]   --> src/builder.rs:56:7
[INFO] [stdout]    |
[INFO] [stdout] 56 | const RISCV64_LD: &str = concatcp!(RISCV64_UNKNOWN_ELF, LINKER);
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `AARCH64_AS` is never used
[INFO] [stdout]   --> src/builder.rs:58:7
[INFO] [stdout]    |
[INFO] [stdout] 58 | const AARCH64_AS: &str = concatcp!(AARCH64_NONE_ELF, ASSEMBLER);
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `AARCH64_LD` is never used
[INFO] [stdout]   --> src/builder.rs:59:7
[INFO] [stdout]    |
[INFO] [stdout] 59 | const AARCH64_LD: &str = concatcp!(AARCH64_NONE_ELF, ASSEMBLER);
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `CARGO_COMMAND` should have a snake case name
[INFO] [stdout]   --> src/builder.rs:63:13
[INFO] [stdout]    |
[INFO] [stdout] 63 |     let mut CARGO_COMMAND = Command::new("cargo");
[INFO] [stdout]    |             ^^^^^^^^^^^^^ help: convert the identifier to snake case: `cargo_command`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `QEMU_COMMAND` should have a snake case name
[INFO] [stdout]    --> src/builder.rs:117:21
[INFO] [stdout]     |
[INFO] [stdout] 117 |             let mut QEMU_COMMAND = Command::new(QEMU_AARCH64);
[INFO] [stdout]     |                     ^^^^^^^^^^^^ help: convert the identifier to snake case: `qemu_command`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "15400240a54734f7aa1c01b073d7fe8d4519ee37849edd67c26d58828e24b93b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15400240a54734f7aa1c01b073d7fe8d4519ee37849edd67c26d58828e24b93b", kill_on_drop: false }`
[INFO] [stdout] 15400240a54734f7aa1c01b073d7fe8d4519ee37849edd67c26d58828e24b93b