[INFO] fetching crate mio-st 0.2.3...
[INFO] testing mio-st-0.2.3 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-1
[INFO] extracting crate mio-st 0.2.3 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate mio-st 0.2.3
[INFO] finished tweaking crates.io crate mio-st 0.2.3
[INFO] tweaked toml for crates.io crate mio-st 0.2.3 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mio-st 0.2.3 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 21 packages to latest compatible versions
[INFO] [stderr]       Adding arrayvec v0.4.12 (available: v0.7.6)
[INFO] [stderr]       Adding env_logger v0.6.2 (available: v0.11.10)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3354ba925eca217c78245e34e1f6815f14f81a1ef3053cd9720f232a05ff0d93
[INFO] running `Command { std: "docker" "start" "-a" "3354ba925eca217c78245e34e1f6815f14f81a1ef3053cd9720f232a05ff0d93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3354ba925eca217c78245e34e1f6815f14f81a1ef3053cd9720f232a05ff0d93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3354ba925eca217c78245e34e1f6815f14f81a1ef3053cd9720f232a05ff0d93", kill_on_drop: false }`
[INFO] [stdout] 3354ba925eca217c78245e34e1f6815f14f81a1ef3053cd9720f232a05ff0d93
[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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 48f1fab383e1fc2fd3c6c3b6e3a71732f0a5b8474b63d482b17875c1c6f20d3f
[INFO] running `Command { std: "docker" "start" "-a" "48f1fab383e1fc2fd3c6c3b6e3a71732f0a5b8474b63d482b17875c1c6f20d3f", kill_on_drop: false }`
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling mio-st v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/sys/unix/pipe.rs:68:45
[INFO] [stdout]    |
[INFO] [stdout] 68 |     let mut fds: [RawFd; 2] = unsafe { mem::uninitialized() };
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `libc::uint32_t`: Use u32 instead.
[INFO] [stdout]   --> src/sys/unix/epoll.rs:99:31
[INFO] [stdout]    |
[INFO] [stdout] 99 | fn contains_flag(flags: libc::uint32_t, flag: libc::c_int) -> bool {
[INFO] [stdout]    |                               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `libc::uint32_t`: Use u32 instead.
[INFO] [stdout]    --> src/sys/unix/epoll.rs:100:28
[INFO] [stdout]     |
[INFO] [stdout] 100 |     (flags & flag as libc::uint32_t) != 0
[INFO] [stdout]     |                            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `libc::uint32_t`: Use u32 instead.
[INFO] [stdout]    --> src/sys/unix/epoll.rs:111:68
[INFO] [stdout]     |
[INFO] [stdout] 111 | fn to_epoll_events(interests: Interests, opt: PollOption) -> libc::uint32_t {
[INFO] [stdout]     |                                                                    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `libc::uint32_t`: Use u32 instead.
[INFO] [stdout]    --> src/sys/unix/epoll.rs:127:21
[INFO] [stdout]     |
[INFO] [stdout] 127 |     events as libc::uint32_t
[INFO] [stdout]     |                     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/sys/unix/epoll.rs:27:76
[INFO] [stdout]    |
[INFO] [stdout] 27 |         let mut ep_events: [libc::epoll_event; EVENTS_CAP] = unsafe { mem::uninitialized() };
[INFO] [stdout]    |                                                                            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]   --> src/sys/unix/awakener.rs:41:41
[INFO] [stdout]    |
[INFO] [stdout] 41 |             let buf: [u8; 8] = unsafe { mem::transmute(1u64) };
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: there's also `to_le_bytes` and `to_be_bytes` if you expect a particular byte order
[INFO] [stdout]    = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] help: replace this with
[INFO] [stdout]    |
[INFO] [stdout] 41 -             let buf: [u8; 8] = unsafe { mem::transmute(1u64) };
[INFO] [stdout] 41 +             let buf: [u8; 8] = unsafe { u64::to_ne_bytes(1u64) };
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `[i32; 2]` does not permit being left uninitialized
[INFO] [stdout]   --> src/sys/unix/pipe.rs:68:40
[INFO] [stdout]    |
[INFO] [stdout] 68 |     let mut fds: [RawFd; 2] = unsafe { mem::uninitialized() };
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                                        |
[INFO] [stdout]    |                                        this code causes undefined behavior when executed
[INFO] [stdout]    |                                        help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]    |
[INFO] [stdout]    = note: integers must be initialized
[INFO] [stdout]    = note: `#[warn(invalid_value)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `[epoll_event; 128]` does not permit being left uninitialized
[INFO] [stdout]   --> src/sys/unix/epoll.rs:27:71
[INFO] [stdout]    |
[INFO] [stdout] 27 |         let mut ep_events: [libc::epoll_event; EVENTS_CAP] = unsafe { mem::uninitialized() };
[INFO] [stdout]    |                                                                       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                                                                       |
[INFO] [stdout]    |                                                                       this code causes undefined behavior when executed
[INFO] [stdout]    |                                                                       help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]    |
[INFO] [stdout]    = note: integers must be initialized
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.14s
[INFO] running `Command { std: "docker" "inspect" "48f1fab383e1fc2fd3c6c3b6e3a71732f0a5b8474b63d482b17875c1c6f20d3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48f1fab383e1fc2fd3c6c3b6e3a71732f0a5b8474b63d482b17875c1c6f20d3f", kill_on_drop: false }`
[INFO] [stdout] 48f1fab383e1fc2fd3c6c3b6e3a71732f0a5b8474b63d482b17875c1c6f20d3f
[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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e8627d943f902fec4d39b3f4aa26da14ddd101c269c81b0d3d2181f3e6654f51
[INFO] running `Command { std: "docker" "start" "-a" "e8627d943f902fec4d39b3f4aa26da14ddd101c269c81b0d3d2181f3e6654f51", kill_on_drop: false }`
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/sys/unix/pipe.rs:68:45
[INFO] [stdout]    |
[INFO] [stdout] 68 |     let mut fds: [RawFd; 2] = unsafe { mem::uninitialized() };
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `libc::uint32_t`: Use u32 instead.
[INFO] [stdout]   --> src/sys/unix/epoll.rs:99:31
[INFO] [stdout]    |
[INFO] [stdout] 99 | fn contains_flag(flags: libc::uint32_t, flag: libc::c_int) -> bool {
[INFO] [stdout]    |                               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `libc::uint32_t`: Use u32 instead.
[INFO] [stdout]    --> src/sys/unix/epoll.rs:100:28
[INFO] [stdout]     |
[INFO] [stdout] 100 |     (flags & flag as libc::uint32_t) != 0
[INFO] [stdout]     |                            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stdout] warning: use of deprecated type alias `libc::uint32_t`: Use u32 instead.
[INFO] [stdout]    --> src/sys/unix/epoll.rs:111:68
[INFO] [stdout]     |
[INFO] [stdout] 111 | fn to_epoll_events(interests: Interests, opt: PollOption) -> libc::uint32_t {
[INFO] [stdout]     |                                                                    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `libc::uint32_t`: Use u32 instead.
[INFO] [stdout]    --> src/sys/unix/epoll.rs:127:21
[INFO] [stdout]     |
[INFO] [stdout] 127 |     events as libc::uint32_t
[INFO] [stdout]     |                     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/sys/unix/epoll.rs:27:76
[INFO] [stdout]    |
[INFO] [stdout] 27 |         let mut ep_events: [libc::epoll_event; EVENTS_CAP] = unsafe { mem::uninitialized() };
[INFO] [stdout]    |                                                                            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]   --> src/sys/unix/awakener.rs:41:41
[INFO] [stdout]    |
[INFO] [stdout] 41 |             let buf: [u8; 8] = unsafe { mem::transmute(1u64) };
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: there's also `to_le_bytes` and `to_be_bytes` if you expect a particular byte order
[INFO] [stdout]    = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] help: replace this with
[INFO] [stdout]    |
[INFO] [stdout] 41 -             let buf: [u8; 8] = unsafe { mem::transmute(1u64) };
[INFO] [stdout] 41 +             let buf: [u8; 8] = unsafe { u64::to_ne_bytes(1u64) };
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `[i32; 2]` does not permit being left uninitialized
[INFO] [stdout]   --> src/sys/unix/pipe.rs:68:40
[INFO] [stdout]    |
[INFO] [stdout] 68 |     let mut fds: [RawFd; 2] = unsafe { mem::uninitialized() };
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                                        |
[INFO] [stdout]    |                                        this code causes undefined behavior when executed
[INFO] [stdout]    |                                        help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]    |
[INFO] [stdout]    = note: integers must be initialized
[INFO] [stdout]    = note: `#[warn(invalid_value)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `[epoll_event; 128]` does not permit being left uninitialized
[INFO] [stdout]   --> src/sys/unix/epoll.rs:27:71
[INFO] [stdout]    |
[INFO] [stdout] 27 |         let mut ep_events: [libc::epoll_event; EVENTS_CAP] = unsafe { mem::uninitialized() };
[INFO] [stdout]    |                                                                       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                                                                       |
[INFO] [stdout]    |                                                                       this code causes undefined behavior when executed
[INFO] [stdout]    |                                                                       help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]    |
[INFO] [stdout]    = note: integers must be initialized
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling mio-st v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] error: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/sys/unix/pipe.rs:68:45
[INFO] [stdout]     |
[INFO] [stdout]  68 |     let mut fds: [RawFd; 2] = unsafe { mem::uninitialized() };
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:144:24
[INFO] [stdout]     |
[INFO] [stdout] 144 | #![cfg_attr(test, deny(warnings))]
[INFO] [stdout]     |                        ^^^^^^^^
[INFO] [stdout]     = note: `#[deny(deprecated)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated type alias `libc::uint32_t`: Use u32 instead.
[INFO] [stdout]   --> src/sys/unix/epoll.rs:99:31
[INFO] [stdout]    |
[INFO] [stdout] 99 | fn contains_flag(flags: libc::uint32_t, flag: libc::c_int) -> bool {
[INFO] [stdout]    |                               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated type alias `libc::uint32_t`: Use u32 instead.
[INFO] [stdout]    --> src/sys/unix/epoll.rs:100:28
[INFO] [stdout]     |
[INFO] [stdout] 100 |     (flags & flag as libc::uint32_t) != 0
[INFO] [stdout]     |                            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated type alias `libc::uint32_t`: Use u32 instead.
[INFO] [stdout]    --> src/sys/unix/epoll.rs:111:68
[INFO] [stdout]     |
[INFO] [stdout] 111 | fn to_epoll_events(interests: Interests, opt: PollOption) -> libc::uint32_t {
[INFO] [stdout]     |                                                                    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated type alias `libc::uint32_t`: Use u32 instead.
[INFO] [stdout]    --> src/sys/unix/epoll.rs:127:21
[INFO] [stdout]     |
[INFO] [stdout] 127 |     events as libc::uint32_t
[INFO] [stdout]     |                     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/sys/unix/epoll.rs:27:76
[INFO] [stdout]    |
[INFO] [stdout] 27 |         let mut ep_events: [libc::epoll_event; EVENTS_CAP] = unsafe { mem::uninitialized() };
[INFO] [stdout]    |                                                                            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unnecessary transmute
[INFO] [stdout]   --> src/sys/unix/awakener.rs:41:41
[INFO] [stdout]    |
[INFO] [stdout] 41 |             let buf: [u8; 8] = unsafe { mem::transmute(1u64) };
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: there's also `to_le_bytes` and `to_be_bytes` if you expect a particular byte order
[INFO] [stdout]    = note: `#[deny(unnecessary_transmutes)]` implied by `#[deny(warnings)]`
[INFO] [stdout] help: replace this with
[INFO] [stdout]    |
[INFO] [stdout] 41 -             let buf: [u8; 8] = unsafe { mem::transmute(1u64) };
[INFO] [stdout] 41 +             let buf: [u8; 8] = unsafe { u64::to_ne_bytes(1u64) };
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the type `[i32; 2]` does not permit being left uninitialized
[INFO] [stdout]   --> src/sys/unix/pipe.rs:68:40
[INFO] [stdout]    |
[INFO] [stdout] 68 |     let mut fds: [RawFd; 2] = unsafe { mem::uninitialized() };
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                                        |
[INFO] [stdout]    |                                        this code causes undefined behavior when executed
[INFO] [stdout]    |                                        help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]    |
[INFO] [stdout]    = note: integers must be initialized
[INFO] [stdout]    = note: `#[deny(invalid_value)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the type `[epoll_event; 128]` does not permit being left uninitialized
[INFO] [stdout]   --> src/sys/unix/epoll.rs:27:71
[INFO] [stdout]    |
[INFO] [stdout] 27 |         let mut ep_events: [libc::epoll_event; EVENTS_CAP] = unsafe { mem::uninitialized() };
[INFO] [stdout]    |                                                                       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                                                                       |
[INFO] [stdout]    |                                                                       this code causes undefined behavior when executed
[INFO] [stdout]    |                                                                       help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]    |
[INFO] [stdout]    = note: integers must be initialized
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mio-st` (lib test) due to 9 previous errors
[INFO] running `Command { std: "docker" "inspect" "e8627d943f902fec4d39b3f4aa26da14ddd101c269c81b0d3d2181f3e6654f51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8627d943f902fec4d39b3f4aa26da14ddd101c269c81b0d3d2181f3e6654f51", kill_on_drop: false }`
[INFO] [stdout] e8627d943f902fec4d39b3f4aa26da14ddd101c269c81b0d3d2181f3e6654f51