[INFO] fetching crate ruspiro-allocator 0.4.2...
[INFO] testing ruspiro-allocator-0.4.2 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate ruspiro-allocator 0.4.2 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate ruspiro-allocator 0.4.2 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ruspiro-allocator 0.4.2
[INFO] finished tweaking crates.io crate ruspiro-allocator 0.4.2
[INFO] tweaked toml for crates.io crate ruspiro-allocator 0.4.2 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a8d8f9a1f4c70b343c2568b8ab80935db6db18e973d88202a60c2f7f3a0f92cc
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a8d8f9a1f4c70b343c2568b8ab80935db6db18e973d88202a60c2f7f3a0f92cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a8d8f9a1f4c70b343c2568b8ab80935db6db18e973d88202a60c2f7f3a0f92cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8d8f9a1f4c70b343c2568b8ab80935db6db18e973d88202a60c2f7f3a0f92cc", kill_on_drop: false }`
[INFO] [stdout] a8d8f9a1f4c70b343c2568b8ab80935db6db18e973d88202a60c2f7f3a0f92cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bae9cd2fd8036589a200fca3426087c0f7618919ada55c0c839d7e9b5ef47ec8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "bae9cd2fd8036589a200fca3426087c0f7618919ada55c0c839d7e9b5ef47ec8", kill_on_drop: false }`
[INFO] [stderr]    Compiling ruspiro-allocator v0.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![feature(alloc_error_handler)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/memory.rs:186:16
[INFO] [stdout]     |
[INFO] [stdout] 186 |     HEAP_START.compare_and_swap(
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/memory.rs:249:16
[INFO] [stdout]     |
[INFO] [stdout] 249 |     HEAP_START.compare_and_swap(
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/memory.rs:314:20
[INFO] [stdout]     |
[INFO] [stdout] 314 |         HEAP_START.compare_and_swap(heap_check, descriptor_addr, Ordering::SeqCst);
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/memory.rs:337:75
[INFO] [stdout]     |
[INFO] [stdout] 337 |         let prev_free_bucket_check = FREE_BUCKETS[descriptor.bucket].tail.compare_and_swap(
[INFO] [stdout]     |                                                                           ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/memory.rs:429:67
[INFO] [stdout]     |
[INFO] [stdout] 429 |             let reusable_bucket_check = FREE_BUCKETS[bucket].head.compare_and_swap(
[INFO] [stdout]     |                                                                   ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ruspiro-allocator`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "bae9cd2fd8036589a200fca3426087c0f7618919ada55c0c839d7e9b5ef47ec8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bae9cd2fd8036589a200fca3426087c0f7618919ada55c0c839d7e9b5ef47ec8", kill_on_drop: false }`
[INFO] [stdout] bae9cd2fd8036589a200fca3426087c0f7618919ada55c0c839d7e9b5ef47ec8