[INFO] cloning repository https://github.com/danielvallance/lc3_vm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/danielvallance/lc3_vm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanielvallance%2Flc3_vm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanielvallance%2Flc3_vm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c35f26c79a2cb36ce8211cba43ee37557a52d659
[INFO] building danielvallance/lc3_vm 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%2Fdanielvallance%2Flc3_vm" "/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/danielvallance/lc3_vm 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/danielvallance/lc3_vm
[INFO] finished tweaking git repo https://github.com/danielvallance/lc3_vm
[INFO] tweaked toml for git repo https://github.com/danielvallance/lc3_vm written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/danielvallance/lc3_vm 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] 122a606462a1529e1ab99891354f58622ac843507d20b39ca82696310e56b0f4
[INFO] running `Command { std: "docker" "start" "-a" "122a606462a1529e1ab99891354f58622ac843507d20b39ca82696310e56b0f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "122a606462a1529e1ab99891354f58622ac843507d20b39ca82696310e56b0f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "122a606462a1529e1ab99891354f58622ac843507d20b39ca82696310e56b0f4", kill_on_drop: false }`
[INFO] [stdout] 122a606462a1529e1ab99891354f58622ac843507d20b39ca82696310e56b0f4
[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] baf6f36f1df77f6f74033f165f32194ef998d0a986f0e527bb7bf029e3d2ab46
[INFO] running `Command { std: "docker" "start" "-a" "baf6f36f1df77f6f74033f165f32194ef998d0a986f0e527bb7bf029e3d2ab46", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.164
[INFO] [stderr]    Compiling cfg_aliases v0.2.1
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling bitflags v2.6.0
[INFO] [stderr]    Compiling nix v0.29.0
[INFO] [stderr]    Compiling termios v0.3.3
[INFO] [stderr]    Compiling ctrlc v3.4.5
[INFO] [stderr]    Compiling lc3_vm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:288:9
[INFO] [stdout]     |
[INFO] [stdout] 288 |     let mut running = true;
[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 `R1` is never used
[INFO] [stdout]   --> src/main.rs:30:7
[INFO] [stdout]    |
[INFO] [stdout] 30 | const R1: usize = 1;
[INFO] [stdout]    |       ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `R2` is never used
[INFO] [stdout]   --> src/main.rs:31:7
[INFO] [stdout]    |
[INFO] [stdout] 31 | const R2: usize = 2;
[INFO] [stdout]    |       ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `R3` is never used
[INFO] [stdout]   --> src/main.rs:32:7
[INFO] [stdout]    |
[INFO] [stdout] 32 | const R3: usize = 3;
[INFO] [stdout]    |       ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `R4` is never used
[INFO] [stdout]   --> src/main.rs:33:7
[INFO] [stdout]    |
[INFO] [stdout] 33 | const R4: usize = 4;
[INFO] [stdout]    |       ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `R5` is never used
[INFO] [stdout]   --> src/main.rs:34:7
[INFO] [stdout]    |
[INFO] [stdout] 34 | const R5: usize = 5;
[INFO] [stdout]    |       ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `R6` is never used
[INFO] [stdout]   --> src/main.rs:35:7
[INFO] [stdout]    |
[INFO] [stdout] 35 | const R6: usize = 6;
[INFO] [stdout]    |       ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.52s
[INFO] running `Command { std: "docker" "inspect" "baf6f36f1df77f6f74033f165f32194ef998d0a986f0e527bb7bf029e3d2ab46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "baf6f36f1df77f6f74033f165f32194ef998d0a986f0e527bb7bf029e3d2ab46", kill_on_drop: false }`
[INFO] [stdout] baf6f36f1df77f6f74033f165f32194ef998d0a986f0e527bb7bf029e3d2ab46
[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] 4610465b4b095fe1cc29ca0211ae05cd97defed98926d120fbbaa4c519debc5e
[INFO] running `Command { std: "docker" "start" "-a" "4610465b4b095fe1cc29ca0211ae05cd97defed98926d120fbbaa4c519debc5e", kill_on_drop: false }`
[INFO] [stderr]    Compiling lc3_vm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:288:9
[INFO] [stdout]     |
[INFO] [stdout] 288 |     let mut running = true;
[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 `R1` is never used
[INFO] [stdout]   --> src/main.rs:30:7
[INFO] [stdout]    |
[INFO] [stdout] 30 | const R1: usize = 1;
[INFO] [stdout]    |       ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `R2` is never used
[INFO] [stdout]   --> src/main.rs:31:7
[INFO] [stdout]    |
[INFO] [stdout] 31 | const R2: usize = 2;
[INFO] [stdout]    |       ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `R3` is never used
[INFO] [stdout]   --> src/main.rs:32:7
[INFO] [stdout]    |
[INFO] [stdout] 32 | const R3: usize = 3;
[INFO] [stdout]    |       ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `R4` is never used
[INFO] [stdout]   --> src/main.rs:33:7
[INFO] [stdout]    |
[INFO] [stdout] 33 | const R4: usize = 4;
[INFO] [stdout]    |       ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `R5` is never used
[INFO] [stdout]   --> src/main.rs:34:7
[INFO] [stdout]    |
[INFO] [stdout] 34 | const R5: usize = 5;
[INFO] [stdout]    |       ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `R6` is never used
[INFO] [stdout]   --> src/main.rs:35:7
[INFO] [stdout]    |
[INFO] [stdout] 35 | const R6: usize = 6;
[INFO] [stdout]    |       ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.28s
[INFO] running `Command { std: "docker" "inspect" "4610465b4b095fe1cc29ca0211ae05cd97defed98926d120fbbaa4c519debc5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4610465b4b095fe1cc29ca0211ae05cd97defed98926d120fbbaa4c519debc5e", kill_on_drop: false }`
[INFO] [stdout] 4610465b4b095fe1cc29ca0211ae05cd97defed98926d120fbbaa4c519debc5e