[INFO] fetching crate fdringbuf 0.0.2...
[INFO] testing fdringbuf-0.0.2 against beta-2023-04-20 for beta-1.70-1
[INFO] extracting crate fdringbuf 0.0.2 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate fdringbuf 0.0.2 on toolchain beta-2023-04-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-1-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "fetch" "--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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cc50a46611667099447295adb69027cebeb8bc584bcdd165326d19422a288cc9
[INFO] running `Command { std: "docker" "start" "-a" "cc50a46611667099447295adb69027cebeb8bc584bcdd165326d19422a288cc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc50a46611667099447295adb69027cebeb8bc584bcdd165326d19422a288cc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc50a46611667099447295adb69027cebeb8bc584bcdd165326d19422a288cc9", kill_on_drop: false }`
[INFO] [stdout] cc50a46611667099447295adb69027cebeb8bc584bcdd165326d19422a288cc9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 49e2ce0e4e065569480fc35e3aa2bb307383e56feb29a63ccfcbe5b52410b581
[INFO] running `Command { std: "docker" "start" "-a" "49e2ce0e4e065569480fc35e3aa2bb307383e56feb29a63ccfcbe5b52410b581", 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 v0.2.142
[INFO] [stderr]    Compiling fdringbuf v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `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 macro `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 function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/fdbuf.rs:39:39
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let b: Arr = unsafe { ::std::mem::uninitialized() };
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `[u64; 32]` does not permit being left uninitialized
[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]    |                           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: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.26s
[INFO] running `Command { std: "docker" "inspect" "49e2ce0e4e065569480fc35e3aa2bb307383e56feb29a63ccfcbe5b52410b581", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49e2ce0e4e065569480fc35e3aa2bb307383e56feb29a63ccfcbe5b52410b581", kill_on_drop: false }`
[INFO] [stdout] 49e2ce0e4e065569480fc35e3aa2bb307383e56feb29a63ccfcbe5b52410b581
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 17f355518c4cbdc12a741ad2d6be293d56c7788af26864bdd96fca4d2369f1fa
[INFO] running `Command { std: "docker" "start" "-a" "17f355518c4cbdc12a741ad2d6be293d56c7788af26864bdd96fca4d2369f1fa", 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 static_assertions v1.1.0
[INFO] [stdout] warning: use of deprecated macro `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 macro `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 function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/fdbuf.rs:39:39
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let b: Arr = unsafe { ::std::mem::uninitialized() };
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `[u64; 32]` does not permit being left uninitialized
[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]    |                           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: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling nix v0.26.2
[INFO] [stderr]    Compiling fdringbuf v0.0.2 (/opt/rustwide/workdir)
[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[E0423]: expected function, found module `std::thread::scoped`
[INFO] [stdout]    --> src/fdbuf.rs:226:21
[INFO] [stdout]     |
[INFO] [stdout] 226 |           let guard = ::std::thread::scoped(move || {
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^------
[INFO] [stdout]     |                                      |
[INFO] [stdout]     |                                      help: a function with a similar name exists: `scope`
[INFO] [stdout]    --> /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/thread/scoped.rs:129:1
[INFO] [stdout]    ::: /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/thread/scoped.rs:131:60
[INFO] [stdout]     |
[INFO] [stdout]     = note: similarly named function `scope` defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0603]: module `scoped` is private
[INFO] [stdout]    --> src/fdbuf.rs:226:36
[INFO] [stdout]     |
[INFO] [stdout] 226 |         let guard = ::std::thread::scoped(move || {
[INFO] [stdout]     |                                    ^^^^^^ private module
[INFO] [stdout]     |
[INFO] [stdout] note: the module `scoped` is defined here
[INFO] [stdout]    --> /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/thread/mod.rs:184:1
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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 macro `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 function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/fdbuf.rs:39:39
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let b: Arr = unsafe { ::std::mem::uninitialized() };
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:27
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(test, feature(test))]
[INFO] [stdout]   |                           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0560]: struct `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]     |                                  ^^^^ `nix::sys::epoll::EpollEvent` does not have this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0560]: struct `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]     |                                           ^^^^^^ `nix::sys::epoll::EpollEvent` does not have this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `Option<&mut nix::sys::epoll::EpollEvent>: From<&nix::sys::epoll::EpollEvent>` is not satisfied
[INFO] [stdout]    --> src/fdbuf.rs:188:52
[INFO] [stdout]     |
[INFO] [stdout] 188 |         epoll_ctl(sleep, EpollOp::EpollCtlAdd, fd, &event).unwrap();
[INFO] [stdout]     |         ---------                                  ^^^^^^ the trait `From<&nix::sys::epoll::EpollEvent>` is not implemented for `Option<&mut nix::sys::epoll::EpollEvent>`
[INFO] [stdout]     |         |
[INFO] [stdout]     |         required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout]     = help: the following other types implement trait `From<T>`:
[INFO] [stdout]               <Option<&'a T> as From<&'a Option<T>>>
[INFO] [stdout]               <Option<&'a mut T> as From<&'a mut Option<T>>>
[INFO] [stdout]               <Option<T> as From<T>>
[INFO] [stdout]     = note: required for `&nix::sys::epoll::EpollEvent` to implement `Into<Option<&mut nix::sys::epoll::EpollEvent>>`
[INFO] [stdout] note: required by a bound in `nix::sys::epoll::epoll_ctl`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/nix-0.26.2/src/sys/epoll.rs:95:8
[INFO] [stdout]     |
[INFO] [stdout] 95  |     T: Into<Option<&'a mut EpollEvent>>,
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `epoll_ctl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0560]: struct `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]     |                                        ^^^^ `nix::sys::epoll::EpollEvent` does not have this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0560]: struct `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]     |                                                 ^^^^^^ `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]     |                                                                     ^^
[INFO] [stdout]     |                                                                     |
[INFO] [stdout]     |                                                                     cannot apply unary operator `-`
[INFO] [stdout]     |                                                                     help: you may have meant the maximum value of `u32`: `u32::MAX`
[INFO] [stdout]     |
[INFO] [stdout]     = note: unsigned values cannot be negated
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0600]: cannot apply unary operator `-` to type `u32`
[INFO] [stdout]    --> src/fdbuf.rs:261:29
[INFO] [stdout]     |
[INFO] [stdout] 261 |         s.send(|d| { d[0] = -1; (1, false) }).unwrap();
[INFO] [stdout]     |                             ^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             cannot apply unary operator `-`
[INFO] [stdout]     |                             help: you may have meant the maximum value of `u32`: `u32::MAX`
[INFO] [stdout]     |
[INFO] [stdout]     = note: unsigned values cannot be negated
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 14 previous errors; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0423, E0425, E0554, E0560, E0600, E0603.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fdringbuf` (lib test) due to 15 previous errors; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "17f355518c4cbdc12a741ad2d6be293d56c7788af26864bdd96fca4d2369f1fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17f355518c4cbdc12a741ad2d6be293d56c7788af26864bdd96fca4d2369f1fa", kill_on_drop: false }`
[INFO] [stdout] 17f355518c4cbdc12a741ad2d6be293d56c7788af26864bdd96fca4d2369f1fa
