[INFO] fetching crate fdringbuf 0.0.2...
[INFO] checking fdringbuf-0.0.2 against beta-2020-07-24 for pr-75494-beta
[INFO] extracting crate fdringbuf 0.0.2 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate fdringbuf 0.0.2 on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fdringbuf 0.0.2
[INFO] finished tweaking crates.io crate fdringbuf 0.0.2
[INFO] tweaked toml for crates.io crate fdringbuf 0.0.2 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (nix) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr] warning: unused manifest key: dev-dependencies.nix.nix
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c1443be1779ee58a30f4d585f51c7c77dee03eaf954298fe7a1cb67615a39759
[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" "c1443be1779ee58a30f4d585f51c7c77dee03eaf954298fe7a1cb67615a39759", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c1443be1779ee58a30f4d585f51c7c77dee03eaf954298fe7a1cb67615a39759", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1443be1779ee58a30f4d585f51c7c77dee03eaf954298fe7a1cb67615a39759", kill_on_drop: false }`
[INFO] [stdout] c1443be1779ee58a30f4d585f51c7c77dee03eaf954298fe7a1cb67615a39759
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 669a2f9bc971b652400ffd62150f7ab3eed00eef0e7446a716c5a82390a27945
[INFO] running `Command { std: "docker" "start" "-a" "669a2f9bc971b652400ffd62150f7ab3eed00eef0e7446a716c5a82390a27945", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (nix) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr] warning: unused manifest key: dev-dependencies.nix.nix
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking fdringbuf v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/fdbuf.rs:70:33
[INFO] [stdout]    |
[INFO] [stdout] 70 |         if r > 0 && was_empty { try!(write_fd(self.signal_fd)) };
[INFO] [stdout]    |                                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/fdbuf.rs:112:32
[INFO] [stdout]     |
[INFO] [stdout] 112 |         if r > 0 && was_full { try!(write_fd(self.signal_fd)) };
[INFO] [stdout]     |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/fdbuf.rs:39:27
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let b: Arr = unsafe { ::std::mem::uninitialized() };
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `EPOLLIN` in this scope
[INFO] [stdout]    --> src/fdbuf.rs:187:51
[INFO] [stdout]     |
[INFO] [stdout] 187 |         let event = EpollEvent { data: 0, events: EPOLLIN };
[INFO] [stdout]     |                                                   ^^^^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this constant
[INFO] [stdout]     |
[INFO] [stdout] 173 |     use libc::EPOLLIN;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `EPOLLIN` in this scope
[INFO] [stdout]    --> src/fdbuf.rs:193:57
[INFO] [stdout]     |
[INFO] [stdout] 193 |         let mut events = [EpollEvent { data: 0, events: EPOLLIN }];
[INFO] [stdout]     |                                                         ^^^^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this constant
[INFO] [stdout]     |
[INFO] [stdout] 173 |     use libc::EPOLLIN;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `EFD_CLOEXEC` in this scope
[INFO] [stdout]    --> src/fdbuf.rs:212:40
[INFO] [stdout]     |
[INFO] [stdout] 212 |         let (efd1, efd2) = (eventfd(0, EFD_CLOEXEC).unwrap(), eventfd(0, EFD_CLOEXEC).unwrap());
[INFO] [stdout]     |                                        ^^^^^^^^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this constant
[INFO] [stdout]     |
[INFO] [stdout] 173 |     use libc::EFD_CLOEXEC;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `EFD_CLOEXEC` in this scope
[INFO] [stdout]    --> src/fdbuf.rs:212:74
[INFO] [stdout]     |
[INFO] [stdout] 212 |         let (efd1, efd2) = (eventfd(0, EFD_CLOEXEC).unwrap(), eventfd(0, EFD_CLOEXEC).unwrap());
[INFO] [stdout]     |                                                                          ^^^^^^^^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this constant
[INFO] [stdout]     |
[INFO] [stdout] 173 |     use libc::EFD_CLOEXEC;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `scoped` in module `std::thread`
[INFO] [stdout]    --> src/fdbuf.rs:226:36
[INFO] [stdout]     |
[INFO] [stdout] 226 |         let guard = ::std::thread::scoped(move || {
[INFO] [stdout]     |                                    ^^^^^^ not found in `std::thread`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:19
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(test, feature(test))]
[INFO] [stdout]   |                   ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/fdbuf.rs:70:33
[INFO] [stdout]    |
[INFO] [stdout] 70 |         if r > 0 && was_empty { try!(write_fd(self.signal_fd)) };
[INFO] [stdout]    |                                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/fdbuf.rs:112:32
[INFO] [stdout]     |
[INFO] [stdout] 112 |         if r > 0 && was_full { try!(write_fd(self.signal_fd)) };
[INFO] [stdout]     |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/fdbuf.rs:39:27
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let b: Arr = unsafe { ::std::mem::uninitialized() };
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0560]: struct `fdbuf::tests::nix::sys::epoll::EpollEvent` has no field named `data`
[INFO] [stdout]    --> src/fdbuf.rs:187:34
[INFO] [stdout]     |
[INFO] [stdout] 187 |         let event = EpollEvent { data: 0, events: EPOLLIN };
[INFO] [stdout]     |                                  ^^^^ `fdbuf::tests::nix::sys::epoll::EpollEvent` does not have this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0560]: struct `fdbuf::tests::nix::sys::epoll::EpollEvent` has no field named `events`
[INFO] [stdout]    --> src/fdbuf.rs:187:43
[INFO] [stdout]     |
[INFO] [stdout] 187 |         let event = EpollEvent { data: 0, events: EPOLLIN };
[INFO] [stdout]     |                                           ^^^^^^ `fdbuf::tests::nix::sys::epoll::EpollEvent` does not have this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `std::option::Option<&mut fdbuf::tests::nix::sys::epoll::EpollEvent>: std::convert::From<&fdbuf::tests::nix::sys::epoll::EpollEvent>` is not satisfied
[INFO] [stdout]    --> src/fdbuf.rs:188:9
[INFO] [stdout]     |
[INFO] [stdout] 188 |         epoll_ctl(sleep, EpollOp::EpollCtlAdd, fd, &event).unwrap();
[INFO] [stdout]     |         ^^^^^^^^^ the trait `std::convert::From<&fdbuf::tests::nix::sys::epoll::EpollEvent>` is not implemented for `std::option::Option<&mut fdbuf::tests::nix::sys::epoll::EpollEvent>`
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nix-0.18.0/src/sys/epoll.rs:85:14
[INFO] [stdout]     |
[INFO] [stdout] 85  |     where T: Into<Option<&'a mut EpollEvent>>
[INFO] [stdout]     |              -------------------------------- required by this bound in `fdbuf::tests::nix::sys::epoll::epoll_ctl`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the following implementations were found:
[INFO] [stdout]               <std::option::Option<&'a T> as std::convert::From<&'a std::option::Option<T>>>
[INFO] [stdout]               <std::option::Option<&'a mut T> as std::convert::From<&'a mut std::option::Option<T>>>
[INFO] [stdout]               <std::option::Option<T> as std::convert::From<T>>
[INFO] [stdout]     = note: required because of the requirements on the impl of `std::convert::Into<std::option::Option<&mut fdbuf::tests::nix::sys::epoll::EpollEvent>>` for `&fdbuf::tests::nix::sys::epoll::EpollEvent`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0560]: struct `fdbuf::tests::nix::sys::epoll::EpollEvent` has no field named `data`
[INFO] [stdout]    --> src/fdbuf.rs:193:40
[INFO] [stdout]     |
[INFO] [stdout] 193 |         let mut events = [EpollEvent { data: 0, events: EPOLLIN }];
[INFO] [stdout]     |                                        ^^^^ `fdbuf::tests::nix::sys::epoll::EpollEvent` does not have this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0560]: struct `fdbuf::tests::nix::sys::epoll::EpollEvent` has no field named `events`
[INFO] [stdout]    --> src/fdbuf.rs:193:49
[INFO] [stdout]     |
[INFO] [stdout] 193 |         let mut events = [EpollEvent { data: 0, events: EPOLLIN }];
[INFO] [stdout]     |                                                 ^^^^^^ `fdbuf::tests::nix::sys::epoll::EpollEvent` does not have this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0600]: cannot apply unary operator `-` to type `u32`
[INFO] [stdout]    --> src/fdbuf.rs:233:69
[INFO] [stdout]     |
[INFO] [stdout] 233 |                     for z in d.iter().take(300) { cc += 1; if *z == -1 { quit = true; return (cc, false); } sum += *z as u64 };
[INFO] [stdout]     |                                                                     ^^ cannot apply unary operator `-`
[INFO] [stdout]     |
[INFO] [stdout]     = note: unsigned values cannot be negated
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `u32: std::ops::Neg` is not satisfied
[INFO] [stdout]    --> src/fdbuf.rs:261:29
[INFO] [stdout]     |
[INFO] [stdout] 261 |         s.send(|d| { d[0] = -1; (1, false) }).unwrap();
[INFO] [stdout]     |                             ^^ the trait `std::ops::Neg` is not implemented for `u32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 13 previous errors; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0425, E0554, E0560, E0600.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fdringbuf`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "669a2f9bc971b652400ffd62150f7ab3eed00eef0e7446a716c5a82390a27945", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "669a2f9bc971b652400ffd62150f7ab3eed00eef0e7446a716c5a82390a27945", kill_on_drop: false }`
[INFO] [stdout] 669a2f9bc971b652400ffd62150f7ab3eed00eef0e7446a716c5a82390a27945
