[INFO] fetching crate mstak 0.5.47...
[INFO] testing mstak-0.5.47 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate mstak 0.5.47 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate mstak 0.5.47
[INFO] finished tweaking crates.io crate mstak 0.5.47
[INFO] tweaked toml for crates.io crate mstak 0.5.47 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mstak 0.5.47 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mstak 0.5.47 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-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d3d2e0aa26d8537e976dc517fce7b4c464cab71114247028e6a80f8d4ac52be6
[INFO] running `Command { std: "docker" "start" "-a" "d3d2e0aa26d8537e976dc517fce7b4c464cab71114247028e6a80f8d4ac52be6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d3d2e0aa26d8537e976dc517fce7b4c464cab71114247028e6a80f8d4ac52be6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3d2e0aa26d8537e976dc517fce7b4c464cab71114247028e6a80f8d4ac52be6", kill_on_drop: false }`
[INFO] [stdout] d3d2e0aa26d8537e976dc517fce7b4c464cab71114247028e6a80f8d4ac52be6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 52f42ba654ed92d8226a58752bd4525e326362d0ee61b6ecfbd0e486f98560d2
[INFO] running `Command { std: "docker" "start" "-a" "52f42ba654ed92d8226a58752bd4525e326362d0ee61b6ecfbd0e486f98560d2", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling unicode-ident v1.0.14
[INFO] [stderr]    Compiling noop-executor v0.1.2
[INFO] [stderr]    Compiling cfg-elif v0.6.5
[INFO] [stderr]    Compiling heapless v0.9.1
[INFO] [stderr]    Compiling libm v0.2.15
[INFO] [stderr]    Compiling rustix v1.1.2
[INFO] [stderr]    Compiling linux-raw-sys v0.11.0
[INFO] [stderr]    Compiling bitflags v2.8.0
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling stak-compiler v0.11.7
[INFO] [stderr]    Compiling libc v0.2.177
[INFO] [stderr]    Compiling stak-util v0.11.7
[INFO] [stderr]    Compiling stak-configuration v0.11.7
[INFO] [stderr]    Compiling hash32 v0.3.1
[INFO] [stderr]    Compiling syn v2.0.108
[INFO] [stderr]    Compiling stak-libc v0.11.7
[INFO] [stderr]    Compiling stak-macro-util v0.11.7
[INFO] [stderr]    Compiling winter-maybe-async v0.13.1
[INFO] [stderr]    Compiling stak-vm v0.11.7
[INFO] [stderr]    Compiling stak-native v0.11.7
[INFO] [stderr]    Compiling stak-inexact v0.11.7
[INFO] [stderr]    Compiling stak-file v0.11.7
[INFO] [stderr]    Compiling stak-device v0.11.7
[INFO] [stderr]    Compiling stak-time v0.11.7
[INFO] [stderr]    Compiling stak-process-context v0.11.7
[INFO] [stderr]    Compiling stak-r7rs v0.11.7
[INFO] [stderr]    Compiling stak-macro v0.11.7
[INFO] [stderr]    Compiling stak-sac v0.11.7
[INFO] [stderr]    Compiling mstak v0.5.47 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [optimized + debuginfo] target(s) in 48.32s
[INFO] running `Command { std: "docker" "inspect" "52f42ba654ed92d8226a58752bd4525e326362d0ee61b6ecfbd0e486f98560d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52f42ba654ed92d8226a58752bd4525e326362d0ee61b6ecfbd0e486f98560d2", kill_on_drop: false }`
[INFO] [stdout] 52f42ba654ed92d8226a58752bd4525e326362d0ee61b6ecfbd0e486f98560d2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0d9d375625d68a792758d500c227f6b5e9d55fbcd5409a13b98e5ff01c2a80e1
[INFO] running `Command { std: "docker" "start" "-a" "0d9d375625d68a792758d500c227f6b5e9d55fbcd5409a13b98e5ff01c2a80e1", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg-elif v0.6.5
[INFO] [stderr]    Compiling noop-executor v0.1.2
[INFO] [stderr]    Compiling linux-raw-sys v0.11.0
[INFO] [stderr]    Compiling bitflags v2.8.0
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling libm v0.2.15
[INFO] [stderr]    Compiling stak-configuration v0.11.7
[INFO] [stderr]    Compiling libc v0.2.177
[INFO] [stderr]    Compiling stak-util v0.11.7
[INFO] [stderr]    Compiling stak-vm v0.11.7
[INFO] [stderr]    Compiling hash32 v0.3.1
[INFO] [stderr]    Compiling heapless v0.9.1
[INFO] [stderr]    Compiling stak-native v0.11.7
[INFO] [stderr]    Compiling stak-process-context v0.11.7
[INFO] [stderr]    Compiling rustix v1.1.2
[INFO] [stderr]    Compiling stak-inexact v0.11.7
[INFO] [stderr]    Compiling stak-file v0.11.7
[INFO] [stderr]    Compiling stak-device v0.11.7
[INFO] [stderr]    Compiling stak-time v0.11.7
[INFO] [stderr]    Compiling stak-libc v0.11.7
[INFO] [stderr]    Compiling stak-r7rs v0.11.7
[INFO] [stderr]    Compiling stak-sac v0.11.7
[INFO] [stderr]    Compiling mstak v0.5.47 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [optimized + debuginfo] target(s) in 34.49s
[INFO] running `Command { std: "docker" "inspect" "0d9d375625d68a792758d500c227f6b5e9d55fbcd5409a13b98e5ff01c2a80e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d9d375625d68a792758d500c227f6b5e9d55fbcd5409a13b98e5ff01c2a80e1", kill_on_drop: false }`
[INFO] [stdout] 0d9d375625d68a792758d500c227f6b5e9d55fbcd5409a13b98e5ff01c2a80e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 34fd3c456e83f1297b87575c68269fe1963c911a12b0a8db6e2cafe3a0ddfe0d
[INFO] running `Command { std: "docker" "start" "-a" "34fd3c456e83f1297b87575c68269fe1963c911a12b0a8db6e2cafe3a0ddfe0d", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [optimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/mstak-b60a2d653b81f7f3)
[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" "34fd3c456e83f1297b87575c68269fe1963c911a12b0a8db6e2cafe3a0ddfe0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34fd3c456e83f1297b87575c68269fe1963c911a12b0a8db6e2cafe3a0ddfe0d", kill_on_drop: false }`
[INFO] [stdout] 34fd3c456e83f1297b87575c68269fe1963c911a12b0a8db6e2cafe3a0ddfe0d