[INFO] fetching crate stack 0.4.0...
[INFO] testing stack-0.4.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate stack 0.4.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate stack 0.4.0
[INFO] finished tweaking crates.io crate stack 0.4.0
[INFO] tweaked toml for crates.io crate stack 0.4.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate stack 0.4.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[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] 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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d82651ef2193b07acdb9143cd6d991c0dcc468cbec6abd2a3fd818c8c969aa1b
[INFO] running `Command { std: "docker" "start" "-a" "d82651ef2193b07acdb9143cd6d991c0dcc468cbec6abd2a3fd818c8c969aa1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d82651ef2193b07acdb9143cd6d991c0dcc468cbec6abd2a3fd818c8c969aa1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d82651ef2193b07acdb9143cd6d991c0dcc468cbec6abd2a3fd818c8c969aa1b", kill_on_drop: false }`
[INFO] [stdout] d82651ef2193b07acdb9143cd6d991c0dcc468cbec6abd2a3fd818c8c969aa1b
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c437b6b673d55495b9b97001e17ed100c094f0790f08420f45125a052556ff26
[INFO] running `Command { std: "docker" "start" "-a" "c437b6b673d55495b9b97001e17ed100c094f0790f08420f45125a052556ff26", kill_on_drop: false }`
[INFO] [stderr]    Compiling coalesce v0.1.1
[INFO] [stderr]    Compiling stack v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `Command { std: "docker" "inspect" "c437b6b673d55495b9b97001e17ed100c094f0790f08420f45125a052556ff26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c437b6b673d55495b9b97001e17ed100c094f0790f08420f45125a052556ff26", kill_on_drop: false }`
[INFO] [stdout] c437b6b673d55495b9b97001e17ed100c094f0790f08420f45125a052556ff26
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9ad73d21c5ef3027c3aa1c08307c688d6cf675c6f7ffd238bdfc1927009b103e
[INFO] running `Command { std: "docker" "start" "-a" "9ad73d21c5ef3027c3aa1c08307c688d6cf675c6f7ffd238bdfc1927009b103e", kill_on_drop: false }`
[INFO] [stderr]    Compiling stack v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition value: `drain`
[INFO] [stdout]    --> tests/array_vec.rs:132:7
[INFO] [stdout]     |
[INFO] [stdout] 132 | #[cfg(feature = "drain")]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `unstable`
[INFO] [stdout]     = help: consider adding `drain` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `drain`
[INFO] [stdout]    --> tests/array_vec.rs:151:7
[INFO] [stdout]     |
[INFO] [stdout] 151 | #[cfg(feature = "drain")]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `unstable`
[INFO] [stdout]     = help: consider adding `drain` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.76s
[INFO] running `Command { std: "docker" "inspect" "9ad73d21c5ef3027c3aa1c08307c688d6cf675c6f7ffd238bdfc1927009b103e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ad73d21c5ef3027c3aa1c08307c688d6cf675c6f7ffd238bdfc1927009b103e", kill_on_drop: false }`
[INFO] [stdout] 9ad73d21c5ef3027c3aa1c08307c688d6cf675c6f7ffd238bdfc1927009b103e
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9281f55965decc9526cbe41e01cfcd1a2f2e739b5c476851a9a7649ba7cd51bf
[INFO] running `Command { std: "docker" "start" "-a" "9281f55965decc9526cbe41e01cfcd1a2f2e739b5c476851a9a7649ba7cd51bf", kill_on_drop: false }`
[INFO] [stderr] warning: unexpected `cfg` condition value: `drain`
[INFO] [stderr]    --> tests/array_vec.rs:132:7
[INFO] [stderr]     |
[INFO] [stderr] 132 | #[cfg(feature = "drain")]
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected values for `feature` are: `unstable`
[INFO] [stderr]     = help: consider adding `drain` as a feature in `Cargo.toml`
[INFO] [stderr]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stderr]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unexpected `cfg` condition value: `drain`
[INFO] [stderr]    --> tests/array_vec.rs:151:7
[INFO] [stderr]     |
[INFO] [stderr] 151 | #[cfg(feature = "drain")]
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected values for `feature` are: `unstable`
[INFO] [stderr]     = help: consider adding `drain` as a feature in `Cargo.toml`
[INFO] [stderr]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stderr] 
[INFO] [stderr] warning: `stack` (test "array_vec") generated 2 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/stack-283de99a7b6f3dd9)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running tests/addressable.rs (/opt/rustwide/target/debug/deps/addressable-ecb2439d5afc0070)
[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 1 test
[INFO] [stdout] test addressable ... ok
[INFO] [stderr]      Running tests/array_vec.rs (/opt/rustwide/target/debug/deps/array_vec-b70e3fbcd134cc7d)
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test test_drop ... ok
[INFO] [stdout] test test_insert ... ok
[INFO] [stdout] test test_extend ... ok
[INFO] [stdout] test test_into_inner_1 ... ok
[INFO] [stdout] test test_into_inner_3 ... ok
[INFO] [stdout] test test_in_option ... ok
[INFO] [stdout] test test_iter ... ok
[INFO] [stderr]      Running tests/small_dst.rs (/opt/rustwide/target/debug/deps/small_dst-31e4a49323c29bc4)
[INFO] [stdout] test test_is_send_sync ... ok
[INFO] [stdout] test test_into_inner_2 ... ok
[INFO] [stdout] test test_simple ... ok
[INFO] [stdout] test test_u16_index ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test closure ... ok
[INFO] [stdout] test many_instances ... ok
[INFO] [stdout] test ensure_drop ... ok
[INFO] [stdout] test spill ... ok
[INFO] [stdout] test undersize ... ok
[INFO] [stdout] test sized ... ok
[INFO] [stdout] test trivial_type ... ok
[INFO] [stdout] test oversize - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/small_vec.rs (/opt/rustwide/target/debug/deps/small_vec-dbebe336e3dd35cd)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test drop_soundness ... ok
[INFO] [stdout] test into_iter ... ok
[INFO] [stdout] test null_optimization ... ok
[INFO] [stdout] test test_capacity ... ok
[INFO] [stdout] test test_inline ... ok
[INFO] [stdout] test test_truncate ... ok
[INFO] [stdout] test test_spill ... ok
[INFO] [stdout] test test_double_spill ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests stack
[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" "9281f55965decc9526cbe41e01cfcd1a2f2e739b5c476851a9a7649ba7cd51bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9281f55965decc9526cbe41e01cfcd1a2f2e739b5c476851a9a7649ba7cd51bf", kill_on_drop: false }`
[INFO] [stdout] 9281f55965decc9526cbe41e01cfcd1a2f2e739b5c476851a9a7649ba7cd51bf
