[INFO] fetching crate zerodrop 0.1.4...
[INFO] testing zerodrop-0.1.4 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate zerodrop 0.1.4 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate zerodrop 0.1.4 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate zerodrop 0.1.4
[INFO] finished tweaking crates.io crate zerodrop 0.1.4
[INFO] tweaked toml for crates.io crate zerodrop 0.1.4 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d2cf1a3a66de1b01412d0862e64d9b3f8b3c9fe69269303abbb9fee5b7d4c00e
[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" "d2cf1a3a66de1b01412d0862e64d9b3f8b3c9fe69269303abbb9fee5b7d4c00e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d2cf1a3a66de1b01412d0862e64d9b3f8b3c9fe69269303abbb9fee5b7d4c00e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2cf1a3a66de1b01412d0862e64d9b3f8b3c9fe69269303abbb9fee5b7d4c00e", kill_on_drop: false }`
[INFO] [stdout] d2cf1a3a66de1b01412d0862e64d9b3f8b3c9fe69269303abbb9fee5b7d4c00e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8ce2d937a8f37d806f35d3d591d8ef6b02917fdc8c50d437796a5abcb38b25ed
[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" "8ce2d937a8f37d806f35d3d591d8ef6b02917fdc8c50d437796a5abcb38b25ed", kill_on_drop: false }`
[INFO] [stderr]    Compiling consistenttime v0.2.0
[INFO] [stderr]    Compiling zerodrop v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(core_intrinsics)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/zd.rs:64:39
[INFO] [stdout]    |
[INFO] [stdout] 64 |         ZeroDrop(Box::new(::std::mem::uninitialized::<T>()))
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/zd.rs:69:51
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let mut b = Box::new(unsafe { ::std::mem::uninitialized::<T>() });
[INFO] [stdout]    |                                                   ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/zd.rs:82:51
[INFO] [stdout]    |
[INFO] [stdout] 82 |         let mut b = Box::new(unsafe { ::std::mem::uninitialized::<T>() });
[INFO] [stdout]    |                                                   ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/cow.rs:47:49
[INFO] [stdout]    |
[INFO] [stdout] 47 |         ZeroDropCow::Boxed(Box::new(::std::mem::uninitialized::<T>()))
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/cow.rs:58:51
[INFO] [stdout]    |
[INFO] [stdout] 58 |         let mut b = Box::new(unsafe { ::std::mem::uninitialized::<T>() });
[INFO] [stdout]    |                                                   ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/cow.rs:68:59
[INFO] [stdout]    |
[INFO] [stdout] 68 |                 let mut b = Box::new(unsafe { ::std::mem::uninitialized::<T>() });
[INFO] [stdout]    |                                                           ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 6 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 `zerodrop` due to 2 previous errors; 6 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "8ce2d937a8f37d806f35d3d591d8ef6b02917fdc8c50d437796a5abcb38b25ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ce2d937a8f37d806f35d3d591d8ef6b02917fdc8c50d437796a5abcb38b25ed", kill_on_drop: false }`
[INFO] [stdout] 8ce2d937a8f37d806f35d3d591d8ef6b02917fdc8c50d437796a5abcb38b25ed