[INFO] fetching crate stackfuture 0.3.0...
[INFO] testing stackfuture-0.3.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate stackfuture 0.3.0 into /workspace/builds/worker-4-tc2/source
[INFO] removed /workspace/builds/worker-4-tc2/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate stackfuture 0.3.0
[INFO] finished tweaking crates.io crate stackfuture 0.3.0
[INFO] tweaked toml for crates.io crate stackfuture 0.3.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate stackfuture 0.3.0 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 17 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cbbf096b684a9654a2b6c24e984ad1ec7afb4b7097491fc8da68c3e0f1993a7f
[INFO] running `Command { std: "docker" "start" "-a" "cbbf096b684a9654a2b6c24e984ad1ec7afb4b7097491fc8da68c3e0f1993a7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cbbf096b684a9654a2b6c24e984ad1ec7afb4b7097491fc8da68c3e0f1993a7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cbbf096b684a9654a2b6c24e984ad1ec7afb4b7097491fc8da68c3e0f1993a7f", kill_on_drop: false }`
[INFO] [stdout] cbbf096b684a9654a2b6c24e984ad1ec7afb4b7097491fc8da68c3e0f1993a7f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eb243f6b9a7631258cc9fbf11e7df6132b94df0596a2966198ab8ad65633f99f
[INFO] running `Command { std: "docker" "start" "-a" "eb243f6b9a7631258cc9fbf11e7df6132b94df0596a2966198ab8ad65633f99f", kill_on_drop: false }`
[INFO] [stderr]    Compiling stackfuture v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] running `Command { std: "docker" "inspect" "eb243f6b9a7631258cc9fbf11e7df6132b94df0596a2966198ab8ad65633f99f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb243f6b9a7631258cc9fbf11e7df6132b94df0596a2966198ab8ad65633f99f", kill_on_drop: false }`
[INFO] [stdout] eb243f6b9a7631258cc9fbf11e7df6132b94df0596a2966198ab8ad65633f99f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 24e1ef2390cd09244bc01f5e94ac34558b7fbaf8a876131f8068ff0c395e8631
[INFO] running `Command { std: "docker" "start" "-a" "24e1ef2390cd09244bc01f5e94ac34558b7fbaf8a876131f8068ff0c395e8631", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling stackfuture v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/tests.rs:106:25
[INFO] [stdout]     |
[INFO] [stdout] 106 |     struct BigAlignment(u32);
[INFO] [stdout]     |            ------------ ^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/tests.rs:124:25
[INFO] [stdout]     |
[INFO] [stdout] 124 |     struct BigAlignment(u32);
[INFO] [stdout]     |            ------------ ^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/tests.rs:145:25
[INFO] [stdout]     |
[INFO] [stdout] 145 |     struct BigAlignment(u32);
[INFO] [stdout]     |            ------------ ^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 5.40s
[INFO] running `Command { std: "docker" "inspect" "24e1ef2390cd09244bc01f5e94ac34558b7fbaf8a876131f8068ff0c395e8631", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24e1ef2390cd09244bc01f5e94ac34558b7fbaf8a876131f8068ff0c395e8631", kill_on_drop: false }`
[INFO] [stdout] 24e1ef2390cd09244bc01f5e94ac34558b7fbaf8a876131f8068ff0c395e8631
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 12b2887ad2bfd834ef3559ff295a2757fe76532d52bdf91c24c9486e6ef134d7
[INFO] running `Command { std: "docker" "start" "-a" "12b2887ad2bfd834ef3559ff295a2757fe76532d52bdf91c24c9486e6ef134d7", kill_on_drop: false }`
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]    --> src/tests.rs:106:25
[INFO] [stderr]     |
[INFO] [stderr] 106 |     struct BigAlignment(u32);
[INFO] [stderr]     |            ------------ ^^^
[INFO] [stderr]     |            |
[INFO] [stderr]     |            field in this struct
[INFO] [stderr]     |
[INFO] [stderr]     = help: consider removing this field
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]    --> src/tests.rs:124:25
[INFO] [stderr]     |
[INFO] [stderr] 124 |     struct BigAlignment(u32);
[INFO] [stderr]     |            ------------ ^^^
[INFO] [stderr]     |            |
[INFO] [stderr]     |            field in this struct
[INFO] [stderr]     |
[INFO] [stderr]     = help: consider removing this field
[INFO] [stderr] 
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]    --> src/tests.rs:145:25
[INFO] [stderr]     |
[INFO] [stderr] 145 |     struct BigAlignment(u32);
[INFO] [stderr]     |            ------------ ^^^
[INFO] [stderr]     |            |
[INFO] [stderr]     |            field in this struct
[INFO] [stderr]     |
[INFO] [stderr]     = help: consider removing this field
[INFO] [stderr] 
[INFO] [stderr] warning: `stackfuture` (lib test) generated 3 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/stackfuture-b269547a183e959b)
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test tests::from_or_box ... ok
[INFO] [stdout] test tests::destructor_runs ... ok
[INFO] [stdout] test tests::create_and_run ... ok
[INFO] [stdout] test tests::test_alignment_failure ... ok
[INFO] [stdout] test tests::test_size_failure ... ok
[INFO] [stdout] test tests::test_boxed_alignment ... ok
[INFO] [stdout] test tests::try_from ... ok
[INFO] [stdout] test tests::test_alignment ... ok
[INFO] [stdout] test tests::stress_drop_sender ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 4.29s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests stackfuture
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/lib.rs - StackFuture<'a,T,STACK_SIZE>::from (line 106) - compile fail ... ok
[INFO] [stdout] test src/lib.rs - StackFuture<'a,T,STACK_SIZE>::from (line 119) - compile fail ... ok
[INFO] [stdout] test src/lib.rs - StackFuture (line 39) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.24s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "12b2887ad2bfd834ef3559ff295a2757fe76532d52bdf91c24c9486e6ef134d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12b2887ad2bfd834ef3559ff295a2757fe76532d52bdf91c24c9486e6ef134d7", kill_on_drop: false }`
[INFO] [stdout] 12b2887ad2bfd834ef3559ff295a2757fe76532d52bdf91c24c9486e6ef134d7