[INFO] fetching crate soio 0.2.3...
[INFO] checking soio-0.2.3 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate soio 0.2.3 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate soio 0.2.3 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate soio 0.2.3
[INFO] removed 1 missing tests
[INFO] finished tweaking crates.io crate soio 0.2.3
[INFO] tweaked toml for crates.io crate soio 0.2.3 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 4 packages
[INFO] [stderr]       Adding log v0.3.9 (latest: v0.4.21)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b6ae4fb273826c70f6e8234071394dec0746a4a7c40462fff28496896a8f64dd
[INFO] running `Command { std: "docker" "start" "-a" "b6ae4fb273826c70f6e8234071394dec0746a4a7c40462fff28496896a8f64dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b6ae4fb273826c70f6e8234071394dec0746a4a7c40462fff28496896a8f64dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6ae4fb273826c70f6e8234071394dec0746a4a7c40462fff28496896a8f64dd", kill_on_drop: false }`
[INFO] [stdout] b6ae4fb273826c70f6e8234071394dec0746a4a7c40462fff28496896a8f64dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 73cd4fd75ecf70201bd33285bc9d48cd83ab16d4fe524a7d9fa744d17859f901
[INFO] running `Command { std: "docker" "start" "-a" "73cd4fd75ecf70201bd33285bc9d48cd83ab16d4fe524a7d9fa744d17859f901", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking soio v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]   --> src/sys/mod.rs:1:12
[INFO] [stdout]    |
[INFO] [stdout] 1  | use libc::{self, c_int};
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:73:1
[INFO] [stdout]    |
[INFO] [stdout] 73 | extern crate libc;
[INFO] [stdout]    | ------------------ the item `libc` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]   --> src/sys/dlsym.rs:5:5
[INFO] [stdout]    |
[INFO] [stdout] 5  | use libc;
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:73:1
[INFO] [stdout]    |
[INFO] [stdout] 73 | extern crate libc;
[INFO] [stdout]    | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]   --> src/sys/epoll.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | use libc;
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:73:1
[INFO] [stdout]    |
[INFO] [stdout] 73 | extern crate libc;
[INFO] [stdout]    | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]   --> src/sys/io.rs:5:5
[INFO] [stdout]    |
[INFO] [stdout] 5  | use libc;
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:73:1
[INFO] [stdout]    |
[INFO] [stdout] 73 | extern crate libc;
[INFO] [stdout]    | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]   --> src/sys/tcp.rs:6:5
[INFO] [stdout]    |
[INFO] [stdout] 6  | use libc;
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:73:1
[INFO] [stdout]    |
[INFO] [stdout] 73 | extern crate libc;
[INFO] [stdout]    | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]   --> src/sys/iovec.rs:3:5
[INFO] [stdout]    |
[INFO] [stdout] 3  | use libc;
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:73:1
[INFO] [stdout]    |
[INFO] [stdout] 73 | extern crate libc;
[INFO] [stdout]    | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `set_nonblock`
[INFO] [stdout]   --> src/sys/mod.rs:31:24
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub use self::io::{Io, set_nonblock};
[INFO] [stdout]    |                        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Read`, `Write`
[INFO] [stdout]  --> src/io.rs:2:19
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub use std::io::{Read, Write, Result, Error, ErrorKind};
[INFO] [stdout]   |                   ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::atomic::ATOMIC_USIZE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/sys/dlsym.rs:13:44
[INFO] [stdout]    |
[INFO] [stdout] 13 |                 addr: ::std::sync::atomic::ATOMIC_USIZE_INIT,
[INFO] [stdout]    |                                            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/sys/mod.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 |     dlsym!(fn pipe2(*mut c_int, c_int) -> c_int);
[INFO] [stdout]    |     -------------------------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `dlsym` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: replace the use of the deprecated constant
[INFO] [stdout]    |
[INFO] [stdout] 13 |                 addr: ::std::sync::atomic::AtomicUsize::new(0),
[INFO] [stdout]    |                                            ~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::atomic::ATOMIC_USIZE_INIT`: the `new` function is now preferred
[INFO] [stdout]  --> src/sys/epoll.rs:3:48
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::sync::atomic::{AtomicUsize, Ordering, ATOMIC_USIZE_INIT};
[INFO] [stdout]   |                                                ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::atomic::ATOMIC_USIZE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/sys/epoll.rs:31:31
[INFO] [stdout]    |
[INFO] [stdout] 31 | static NEXT_ID: AtomicUsize = ATOMIC_USIZE_INIT;
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: replace the use of the deprecated constant
[INFO] [stdout]    |
[INFO] [stdout] 31 | static NEXT_ID: AtomicUsize = AtomicUsize::new(0);
[INFO] [stdout]    |                               ~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::atomic::ATOMIC_USIZE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/sys/dlsym.rs:13:44
[INFO] [stdout]    |
[INFO] [stdout] 13 |                 addr: ::std::sync::atomic::ATOMIC_USIZE_INIT,
[INFO] [stdout]    |                                            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/sys/epoll.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |             dlsym!(fn epoll_create1(c_int) -> c_int);
[INFO] [stdout]    |             ---------------------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `dlsym` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: replace the use of the deprecated constant
[INFO] [stdout]    |
[INFO] [stdout] 13 |                 addr: ::std::sync::atomic::AtomicUsize::new(0),
[INFO] [stdout]    |                                            ~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]   --> src/sys/mod.rs:1:12
[INFO] [stdout]    |
[INFO] [stdout] 1  | use libc::{self, c_int};
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:73:1
[INFO] [stdout]    |
[INFO] [stdout] 73 | extern crate libc;
[INFO] [stdout]    | ------------------ the item `libc` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]   --> src/sys/dlsym.rs:5:5
[INFO] [stdout]    |
[INFO] [stdout] 5  | use libc;
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:73:1
[INFO] [stdout]    |
[INFO] [stdout] 73 | extern crate libc;
[INFO] [stdout]    | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]   --> src/sys/epoll.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | use libc;
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:73:1
[INFO] [stdout]    |
[INFO] [stdout] 73 | extern crate libc;
[INFO] [stdout]    | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]   --> src/sys/io.rs:5:5
[INFO] [stdout]    |
[INFO] [stdout] 5  | use libc;
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:73:1
[INFO] [stdout]    |
[INFO] [stdout] 73 | extern crate libc;
[INFO] [stdout]    | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]   --> src/sys/tcp.rs:6:5
[INFO] [stdout]    |
[INFO] [stdout] 6  | use libc;
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:73:1
[INFO] [stdout]    |
[INFO] [stdout] 73 | extern crate libc;
[INFO] [stdout]    | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]   --> src/sys/iovec.rs:3:5
[INFO] [stdout]    |
[INFO] [stdout] 3  | use libc;
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:73:1
[INFO] [stdout]    |
[INFO] [stdout] 73 | extern crate libc;
[INFO] [stdout]    | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `set_nonblock`
[INFO] [stdout]   --> src/sys/mod.rs:31:24
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub use self::io::{Io, set_nonblock};
[INFO] [stdout]    |                        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Read`, `Write`
[INFO] [stdout]  --> src/io.rs:2:19
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub use std::io::{Read, Write, Result, Error, ErrorKind};
[INFO] [stdout]   |                   ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::atomic::ATOMIC_USIZE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/sys/dlsym.rs:13:44
[INFO] [stdout]    |
[INFO] [stdout] 13 |                 addr: ::std::sync::atomic::ATOMIC_USIZE_INIT,
[INFO] [stdout]    |                                            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/sys/mod.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 |     dlsym!(fn pipe2(*mut c_int, c_int) -> c_int);
[INFO] [stdout]    |     -------------------------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `dlsym` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: replace the use of the deprecated constant
[INFO] [stdout]    |
[INFO] [stdout] 13 |                 addr: ::std::sync::atomic::AtomicUsize::new(0),
[INFO] [stdout]    |                                            ~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::atomic::ATOMIC_USIZE_INIT`: the `new` function is now preferred
[INFO] [stdout]  --> src/sys/epoll.rs:3:48
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::sync::atomic::{AtomicUsize, Ordering, ATOMIC_USIZE_INIT};
[INFO] [stdout]   |                                                ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::atomic::ATOMIC_USIZE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/sys/epoll.rs:31:31
[INFO] [stdout]    |
[INFO] [stdout] 31 | static NEXT_ID: AtomicUsize = ATOMIC_USIZE_INIT;
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: replace the use of the deprecated constant
[INFO] [stdout]    |
[INFO] [stdout] 31 | static NEXT_ID: AtomicUsize = AtomicUsize::new(0);
[INFO] [stdout]    |                               ~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::atomic::ATOMIC_USIZE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/sys/dlsym.rs:13:44
[INFO] [stdout]    |
[INFO] [stdout] 13 |                 addr: ::std::sync::atomic::ATOMIC_USIZE_INIT,
[INFO] [stdout]    |                                            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/sys/epoll.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |             dlsym!(fn epoll_create1(c_int) -> c_int);
[INFO] [stdout]    |             ---------------------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `dlsym` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: replace the use of the deprecated constant
[INFO] [stdout]    |
[INFO] [stdout] 13 |                 addr: ::std::sync::atomic::AtomicUsize::new(0),
[INFO] [stdout]    |                                            ~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/poll.rs:706:40
[INFO] [stdout]     |
[INFO] [stdout] 706 |         let mut curr = self.lock_state.compare_and_swap(0, 1, SeqCst);
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/poll.rs:724:50
[INFO] [stdout]     |
[INFO] [stdout] 724 |                     let actual = self.lock_state.compare_and_swap(curr, next, SeqCst);
[INFO] [stdout]     |                                                  ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/poll.rs:748:50
[INFO] [stdout]     |
[INFO] [stdout] 748 |                     let actual = self.lock_state.compare_and_swap(curr, next, SeqCst);
[INFO] [stdout]     |                                                  ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::AtomicPtr::<T>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/registration.rs:583:47
[INFO] [stdout]     |
[INFO] [stdout] 583 |             let actual = self.readiness_queue.compare_and_swap(
[INFO] [stdout]     |                                               ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::AtomicBool::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/registration.rs:632:29
[INFO] [stdout]     |
[INFO] [stdout] 632 |         if self.update_lock.compare_and_swap(false, true, Acquire) {
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::AtomicPtr::<T>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/registration.rs:922:48
[INFO] [stdout]     |
[INFO] [stdout] 922 |         let actual = self.inner.head_readiness.compare_and_swap(
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::AtomicPtr::<T>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]     --> src/registration.rs:1016:47
[INFO] [stdout]      |
[INFO] [stdout] 1016 |                 let act = self.head_readiness.compare_and_swap(prev, node_ptr, AcqRel);
[INFO] [stdout]      |                                               ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]     --> src/registration.rs:1196:20
[INFO] [stdout]      |
[INFO] [stdout] 1196 |         self.inner.compare_and_swap(current.into(), new.into(), order).into()
[INFO] [stdout]      |                    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/channel.rs:310:50
[INFO] [stdout]     |
[INFO] [stdout] 310 |             &SendError::Io(ref io_err) => io_err.description(),
[INFO] [stdout]     |                                                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/channel.rs:319:53
[INFO] [stdout]     |
[INFO] [stdout] 319 |             &TrySendError::Io(ref io_err) => io_err.description(),
[INFO] [stdout]     |                                                     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/poll.rs:706:40
[INFO] [stdout]     |
[INFO] [stdout] 706 |         let mut curr = self.lock_state.compare_and_swap(0, 1, SeqCst);
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/poll.rs:724:50
[INFO] [stdout]     |
[INFO] [stdout] 724 |                     let actual = self.lock_state.compare_and_swap(curr, next, SeqCst);
[INFO] [stdout]     |                                                  ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/poll.rs:748:50
[INFO] [stdout]     |
[INFO] [stdout] 748 |                     let actual = self.lock_state.compare_and_swap(curr, next, SeqCst);
[INFO] [stdout]     |                                                  ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::AtomicPtr::<T>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/registration.rs:583:47
[INFO] [stdout]     |
[INFO] [stdout] 583 |             let actual = self.readiness_queue.compare_and_swap(
[INFO] [stdout]     |                                               ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::AtomicBool::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/registration.rs:632:29
[INFO] [stdout]     |
[INFO] [stdout] 632 |         if self.update_lock.compare_and_swap(false, true, Acquire) {
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::AtomicPtr::<T>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/registration.rs:922:48
[INFO] [stdout]     |
[INFO] [stdout] 922 |         let actual = self.inner.head_readiness.compare_and_swap(
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::AtomicPtr::<T>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]     --> src/registration.rs:1016:47
[INFO] [stdout]      |
[INFO] [stdout] 1016 |                 let act = self.head_readiness.compare_and_swap(prev, node_ptr, AcqRel);
[INFO] [stdout]      |                                               ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]     --> src/registration.rs:1196:20
[INFO] [stdout]      |
[INFO] [stdout] 1196 |         self.inner.compare_and_swap(current.into(), new.into(), order).into()
[INFO] [stdout]      |                    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/channel.rs:310:50
[INFO] [stdout]     |
[INFO] [stdout] 310 |             &SendError::Io(ref io_err) => io_err.description(),
[INFO] [stdout]     |                                                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/channel.rs:319:53
[INFO] [stdout]     |
[INFO] [stdout] 319 |             &TrySendError::Io(ref io_err) => io_err.description(),
[INFO] [stdout]     |                                                     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `map_non_block` is never used
[INFO] [stdout]  --> src/io.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub trait MapNonBlock<T> {
[INFO] [stdout]   |           ----------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 9 |     fn map_non_block(self) -> Result<Option<T>>;
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 23 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `map_non_block` is never used
[INFO] [stdout]  --> src/io.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub trait MapNonBlock<T> {
[INFO] [stdout]   |           ----------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 9 |     fn map_non_block(self) -> Result<Option<T>>;
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 23 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.16s
[INFO] running `Command { std: "docker" "inspect" "73cd4fd75ecf70201bd33285bc9d48cd83ab16d4fe524a7d9fa744d17859f901", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73cd4fd75ecf70201bd33285bc9d48cd83ab16d4fe524a7d9fa744d17859f901", kill_on_drop: false }`
[INFO] [stdout] 73cd4fd75ecf70201bd33285bc9d48cd83ab16d4fe524a7d9fa744d17859f901