[INFO] cloning repository https://github.com/mfs/box
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mfs/box" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmfs%2Fbox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmfs%2Fbox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3cef007c04a03b7abdb96611f209166ede476017
[INFO] testing mfs/box against beta-2026-04-21 for beta-1.96-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmfs%2Fbox" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mfs/box
[INFO] finished tweaking git repo https://github.com/mfs/box
[INFO] tweaked toml for git repo https://github.com/mfs/box written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mfs/box on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mfs/box 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" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 577a300897c8e9b9c2cf597ceb78b2287d24606e20d870487958fa2dd98409a2
[INFO] running `Command { std: "docker" "start" "-a" "577a300897c8e9b9c2cf597ceb78b2287d24606e20d870487958fa2dd98409a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "577a300897c8e9b9c2cf597ceb78b2287d24606e20d870487958fa2dd98409a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "577a300897c8e9b9c2cf597ceb78b2287d24606e20d870487958fa2dd98409a2", kill_on_drop: false }`
[INFO] [stdout] 577a300897c8e9b9c2cf597ceb78b2287d24606e20d870487958fa2dd98409a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 355b473c08ae4edc4f7ec5da0d202b20d6eba857c7acaf2ad83340554ee924cd
[INFO] running `Command { std: "docker" "start" "-a" "355b473c08ae4edc4f7ec5da0d202b20d6eba857c7acaf2ad83340554ee924cd", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr]    Compiling box v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/assembler.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let mut reader = BufReader::new(f);
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `INSTRUCTIONS` is never used
[INFO] [stdout]  --> src/bin/assembler.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 | const INSTRUCTIONS: &'static [&'static str] = &[
[INFO] [stdout]   |       ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Token` is never used
[INFO] [stdout]   --> src/bin/assembler.rs:14:6
[INFO] [stdout]    |
[INFO] [stdout] 14 | enum Token {
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/cpu.rs:441:9
[INFO] [stdout]     |
[INFO] [stdout] 441 |         try!(write!(f, "acc: {:x} carry: {} pc: {:03x} pc stack: {:?}\n",
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/cpu.rs:447:9
[INFO] [stdout]     |
[INFO] [stdout] 447 | ...   try!(write!(f, "r{:02}: {:x} r{:02}: {:x}   r{:02}: {:x} r{:02}: {:x}   r{:02}: {:x} r{:02}: {:x}   r{:02}: {:x} r{:02}: {:x}...
[INFO] [stdout]     |       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "355b473c08ae4edc4f7ec5da0d202b20d6eba857c7acaf2ad83340554ee924cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "355b473c08ae4edc4f7ec5da0d202b20d6eba857c7acaf2ad83340554ee924cd", kill_on_drop: false }`
[INFO] [stdout] 355b473c08ae4edc4f7ec5da0d202b20d6eba857c7acaf2ad83340554ee924cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f3d0b3c6f61a8948845af4885782828475cc687dfdd344c9c01dedd686d06332
[INFO] running `Command { std: "docker" "start" "-a" "f3d0b3c6f61a8948845af4885782828475cc687dfdd344c9c01dedd686d06332", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr]    Compiling box v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/assembler.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let mut reader = BufReader::new(f);
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `INSTRUCTIONS` is never used
[INFO] [stdout]  --> src/bin/assembler.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 | const INSTRUCTIONS: &'static [&'static str] = &[
[INFO] [stdout]   |       ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Token` is never used
[INFO] [stdout]   --> src/bin/assembler.rs:14:6
[INFO] [stdout]    |
[INFO] [stdout] 14 | enum Token {
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/cpu.rs:441:9
[INFO] [stdout]     |
[INFO] [stdout] 441 |         try!(write!(f, "acc: {:x} carry: {} pc: {:03x} pc stack: {:?}\n",
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/cpu.rs:447:9
[INFO] [stdout]     |
[INFO] [stdout] 447 | ...   try!(write!(f, "r{:02}: {:x} r{:02}: {:x}   r{:02}: {:x} r{:02}: {:x}   r{:02}: {:x} r{:02}: {:x}   r{:02}: {:x} r{:02}: {:x}...
[INFO] [stdout]     |       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `Command { std: "docker" "inspect" "f3d0b3c6f61a8948845af4885782828475cc687dfdd344c9c01dedd686d06332", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3d0b3c6f61a8948845af4885782828475cc687dfdd344c9c01dedd686d06332", kill_on_drop: false }`
[INFO] [stdout] f3d0b3c6f61a8948845af4885782828475cc687dfdd344c9c01dedd686d06332
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7c4563f1d188b646c790f976ef8657db01c1246660b42889abc4fda8ed31d033
[INFO] running `Command { std: "docker" "start" "-a" "7c4563f1d188b646c790f976ef8657db01c1246660b42889abc4fda8ed31d033", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/assembler.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 |     let mut reader = BufReader::new(f);
[INFO] [stderr]    |         ----^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant `INSTRUCTIONS` is never used
[INFO] [stderr]  --> src/bin/assembler.rs:7:7
[INFO] [stderr]   |
[INFO] [stderr] 7 | const INSTRUCTIONS: &'static [&'static str] = &[
[INFO] [stderr]   |       ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Token` is never used
[INFO] [stderr]   --> src/bin/assembler.rs:14:6
[INFO] [stderr]    |
[INFO] [stderr] 14 | enum Token {
[INFO] [stderr]    |      ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `box` (bin "assembler" test) generated 3 warnings (run `cargo fix --bin "assembler" -p box --tests` to apply 1 suggestion)
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/cpu.rs:441:9
[INFO] [stderr]     |
[INFO] [stderr] 441 |         try!(write!(f, "acc: {:x} carry: {} pc: {:03x} pc stack: {:?}\n",
[INFO] [stderr]     |         ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/cpu.rs:447:9
[INFO] [stderr]     |
[INFO] [stderr] 447 | ...   try!(write!(f, "r{:02}: {:x} r{:02}: {:x}   r{:02}: {:x} r{:02}: {:x}   r{:02}: {:x} r{:02}: {:x}   r{:02}: {:x} r{:02}: {:x}...
[INFO] [stderr]     |       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `box` (bin "box" test) generated 2 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/bin/assembler.rs (/opt/rustwide/target/debug/deps/assembler-8d95f6aae13cb740)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/box-59255a12d0f5b058)
[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] [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" "7c4563f1d188b646c790f976ef8657db01c1246660b42889abc4fda8ed31d033", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c4563f1d188b646c790f976ef8657db01c1246660b42889abc4fda8ed31d033", kill_on_drop: false }`
[INFO] [stdout] 7c4563f1d188b646c790f976ef8657db01c1246660b42889abc4fda8ed31d033
