[INFO] fetching crate tokio-sync 0.1.8...
[INFO] checking tokio-sync-0.1.8 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate tokio-sync 0.1.8 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate tokio-sync 0.1.8 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tokio-sync 0.1.8
[INFO] finished tweaking crates.io crate tokio-sync 0.1.8
[INFO] tweaked toml for crates.io crate tokio-sync 0.1.8 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 61 packages
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding bytes v0.4.12 (latest: v1.6.0)
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[INFO] [stderr]       Adding env_logger v0.6.2 (latest: v0.11.3)
[INFO] [stderr]       Adding futures v0.1.31 (latest: v0.3.30)
[INFO] [stderr]       Adding lock_api v0.3.4 (latest: v0.4.11)
[INFO] [stderr]       Adding loom v0.1.1 (latest: v0.7.1)
[INFO] [stderr]       Adding memoffset v0.5.6 (latest: v0.9.1)
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[INFO] [stderr]       Adding tokio v0.1.22 (latest: v1.37.0)
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[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-mock-task v0.1.1
[INFO] [stderr]   Downloaded loom v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5da4a02af1743dd5815a9bcdc34933e1107738a026561efaf292f8c6e9657e19
[INFO] running `Command { std: "docker" "start" "-a" "5da4a02af1743dd5815a9bcdc34933e1107738a026561efaf292f8c6e9657e19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5da4a02af1743dd5815a9bcdc34933e1107738a026561efaf292f8c6e9657e19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5da4a02af1743dd5815a9bcdc34933e1107738a026561efaf292f8c6e9657e19", kill_on_drop: false }`
[INFO] [stdout] 5da4a02af1743dd5815a9bcdc34933e1107738a026561efaf292f8c6e9657e19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 23e6fbf1925bebe11ba7423f9bef0b3e5e8f4eb7f46a83991052472efcb99df5
[INFO] running `Command { std: "docker" "start" "-a" "23e6fbf1925bebe11ba7423f9bef0b3e5e8f4eb7f46a83991052472efcb99df5", kill_on_drop: false }`
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking tokio-mock-task v0.1.1
[INFO] [stderr]     Checking loom v0.1.1
[INFO] [stderr]     Checking tokio-sync v0.1.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated function `std::sync::atomic::spin_loop_hint`: use hint::spin_loop instead
[INFO] [stdout]   --> src/loom.rs:36:26
[INFO] [stdout]    |
[INFO] [stdout] 36 |     ::std::sync::atomic::spin_loop_hint();
[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/mpsc/block.rs:366:29
[INFO] [stdout]     |
[INFO] [stdout] 366 |         let mut vals = mem::uninitialized();
[INFO] [stdout]     |                             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/oneshot.rs:133:66
[INFO] [stdout]     |
[INFO] [stdout] 133 |         tx_task: CausalCell::new(ManuallyDrop::new(unsafe { mem::uninitialized() })),
[INFO] [stdout]     |                                                                  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/oneshot.rs:134:66
[INFO] [stdout]     |
[INFO] [stdout] 134 |         rx_task: CausalCell::new(ManuallyDrop::new(unsafe { mem::uninitialized() })),
[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/mpsc/block.rs:269:14
[INFO] [stdout]     |
[INFO] [stdout] 269 |             .compare_and_swap(ptr::null_mut(), block.as_ptr(), ordering);
[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/mpsc/block.rs:311:43
[INFO] [stdout]     |
[INFO] [stdout] 311 |         let next = NonNull::new(self.next.compare_and_swap(
[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/mpsc/bounded.rs:223:32
[INFO] [stdout]     |
[INFO] [stdout] 223 |         write!(fmt, "{}", self.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/mpsc/bounded.rs:263:32
[INFO] [stdout]     |
[INFO] [stdout] 263 |         write!(fmt, "{}", self.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/mpsc/bounded.rs:293:32
[INFO] [stdout]     |
[INFO] [stdout] 293 |         write!(fmt, "{}", self.description())
[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/mpsc/list.rs:148:26
[INFO] [stdout]     |
[INFO] [stdout] 148 |                         .compare_and_swap(block_ptr, next_block.as_ptr(), Release);
[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/mpsc/unbounded.rs:145:32
[INFO] [stdout]     |
[INFO] [stdout] 145 |         write!(fmt, "{}", self.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/mpsc/unbounded.rs:167:32
[INFO] [stdout]     |
[INFO] [stdout] 167 |         write!(fmt, "{}", self.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/mpsc/unbounded.rs:189:32
[INFO] [stdout]     |
[INFO] [stdout] 189 |         write!(fmt, "{}", self.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/oneshot.rs:50:36
[INFO] [stdout]    |
[INFO] [stdout] 50 |             write!(fmt, "{}", self.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/oneshot.rs:65:36
[INFO] [stdout]    |
[INFO] [stdout] 65 |             write!(fmt, "{}", self.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/semaphore.rs:688:32
[INFO] [stdout]     |
[INFO] [stdout] 688 |         write!(fmt, "{}", self.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/semaphore.rs:734:32
[INFO] [stdout]     |
[INFO] [stdout] 734 |         write!(fmt, "{}", self.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/task/atomic_task.rs:179:26
[INFO] [stdout]     |
[INFO] [stdout] 179 |         match self.state.compare_and_swap(WAITING, REGISTERING, Acquire) {
[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/watch.rs:126:36
[INFO] [stdout]     |
[INFO] [stdout] 126 |             write!(fmt, "{}", self.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/watch.rs:141:36
[INFO] [stdout]     |
[INFO] [stdout] 141 |             write!(fmt, "{}", self.description())
[INFO] [stdout]     |                                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `inner` is never read
[INFO] [stdout]    --> src/watch.rs:118:20
[INFO] [stdout]     |
[INFO] [stdout] 117 |     pub struct SendError<T> {
[INFO] [stdout]     |                --------- field in this struct
[INFO] [stdout] 118 |         pub(crate) inner: T,
[INFO] [stdout]     |                    ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `SendError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `Task` does not permit being left uninitialized
[INFO] [stdout]    --> src/oneshot.rs:133:61
[INFO] [stdout]     |
[INFO] [stdout] 133 |         tx_task: CausalCell::new(ManuallyDrop::new(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 `Task` does not permit being left uninitialized
[INFO] [stdout]    --> src/oneshot.rs:134:61
[INFO] [stdout]     |
[INFO] [stdout] 134 |         rx_task: CausalCell::new(ManuallyDrop::new(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] [stdout] warning: 23 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `test` is imported redundantly
[INFO] [stdout]   --> benches/mpsc.rs:13:16
[INFO] [stdout]    |
[INFO] [stdout] 4  | extern crate test;
[INFO] [stdout]    | ------------------ the item `test` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 13 |     use test::{self, Bencher};
[INFO] [stdout]    |                ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `test` is imported redundantly
[INFO] [stdout]    --> benches/mpsc.rs:278:16
[INFO] [stdout]     |
[INFO] [stdout] 4   | extern crate test;
[INFO] [stdout]     | ------------------ the item `test` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 278 |     use test::{self, Bencher};
[INFO] [stdout]     |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::sync::atomic::spin_loop_hint`: use hint::spin_loop instead
[INFO] [stdout]   --> src/loom.rs:36:26
[INFO] [stdout]    |
[INFO] [stdout] 36 |     ::std::sync::atomic::spin_loop_hint();
[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/mpsc/block.rs:366:29
[INFO] [stdout]     |
[INFO] [stdout] 366 |         let mut vals = mem::uninitialized();
[INFO] [stdout]     |                             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/oneshot.rs:133:66
[INFO] [stdout]     |
[INFO] [stdout] 133 |         tx_task: CausalCell::new(ManuallyDrop::new(unsafe { mem::uninitialized() })),
[INFO] [stdout]     |                                                                  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/oneshot.rs:134:66
[INFO] [stdout]     |
[INFO] [stdout] 134 |         rx_task: CausalCell::new(ManuallyDrop::new(unsafe { mem::uninitialized() })),
[INFO] [stdout]     |                                                                  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `AssertSend` is never used
[INFO] [stdout]  --> tests/atomic_task.rs:9:7
[INFO] [stdout]   |
[INFO] [stdout] 9 | trait AssertSend: Send {}
[INFO] [stdout]   |       ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `AssertSync` is never used
[INFO] [stdout]   --> tests/atomic_task.rs:10:7
[INFO] [stdout]    |
[INFO] [stdout] 10 | trait AssertSync: Send {}
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `AssertSend` is never used
[INFO] [stdout]   --> tests/mpsc.rs:13:7
[INFO] [stdout]    |
[INFO] [stdout] 13 | trait AssertSend: Send {}
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[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/mpsc/block.rs:269:14
[INFO] [stdout]     |
[INFO] [stdout] 269 |             .compare_and_swap(ptr::null_mut(), block.as_ptr(), ordering);
[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/mpsc/block.rs:311:43
[INFO] [stdout]     |
[INFO] [stdout] 311 |         let next = NonNull::new(self.next.compare_and_swap(
[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/mpsc/bounded.rs:223:32
[INFO] [stdout]     |
[INFO] [stdout] 223 |         write!(fmt, "{}", self.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/mpsc/bounded.rs:263:32
[INFO] [stdout]     |
[INFO] [stdout] 263 |         write!(fmt, "{}", self.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/mpsc/bounded.rs:293:32
[INFO] [stdout]     |
[INFO] [stdout] 293 |         write!(fmt, "{}", self.description())
[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/mpsc/list.rs:148:26
[INFO] [stdout]     |
[INFO] [stdout] 148 |                         .compare_and_swap(block_ptr, next_block.as_ptr(), Release);
[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/mpsc/unbounded.rs:145:32
[INFO] [stdout]     |
[INFO] [stdout] 145 |         write!(fmt, "{}", self.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/mpsc/unbounded.rs:167:32
[INFO] [stdout]     |
[INFO] [stdout] 167 |         write!(fmt, "{}", self.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/mpsc/unbounded.rs:189:32
[INFO] [stdout]     |
[INFO] [stdout] 189 |         write!(fmt, "{}", self.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/oneshot.rs:50:36
[INFO] [stdout]    |
[INFO] [stdout] 50 |             write!(fmt, "{}", self.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/oneshot.rs:65:36
[INFO] [stdout]    |
[INFO] [stdout] 65 |             write!(fmt, "{}", self.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/semaphore.rs:688:32
[INFO] [stdout]     |
[INFO] [stdout] 688 |         write!(fmt, "{}", self.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/semaphore.rs:734:32
[INFO] [stdout]     |
[INFO] [stdout] 734 |         write!(fmt, "{}", self.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/task/atomic_task.rs:179:26
[INFO] [stdout]     |
[INFO] [stdout] 179 |         match self.state.compare_and_swap(WAITING, REGISTERING, Acquire) {
[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/watch.rs:126:36
[INFO] [stdout]     |
[INFO] [stdout] 126 |             write!(fmt, "{}", self.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/watch.rs:141:36
[INFO] [stdout]     |
[INFO] [stdout] 141 |             write!(fmt, "{}", self.description())
[INFO] [stdout]     |                                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `AssertSend` is never used
[INFO] [stdout]   --> tests/oneshot.rs:30:7
[INFO] [stdout]    |
[INFO] [stdout] 30 | trait AssertSend: Send {}
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `inner` is never read
[INFO] [stdout]    --> src/watch.rs:118:20
[INFO] [stdout]     |
[INFO] [stdout] 117 |     pub struct SendError<T> {
[INFO] [stdout]     |                --------- field in this struct
[INFO] [stdout] 118 |         pub(crate) inner: T,
[INFO] [stdout]     |                    ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `SendError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `Task` does not permit being left uninitialized
[INFO] [stdout]    --> src/oneshot.rs:133:61
[INFO] [stdout]     |
[INFO] [stdout] 133 |         tx_task: CausalCell::new(ManuallyDrop::new(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 `Task` does not permit being left uninitialized
[INFO] [stdout]    --> src/oneshot.rs:134:61
[INFO] [stdout]     |
[INFO] [stdout] 134 |         rx_task: CausalCell::new(ManuallyDrop::new(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] [stdout] warning: 23 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.53s
[INFO] running `Command { std: "docker" "inspect" "23e6fbf1925bebe11ba7423f9bef0b3e5e8f4eb7f46a83991052472efcb99df5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23e6fbf1925bebe11ba7423f9bef0b3e5e8f4eb7f46a83991052472efcb99df5", kill_on_drop: false }`
[INFO] [stdout] 23e6fbf1925bebe11ba7423f9bef0b3e5e8f4eb7f46a83991052472efcb99df5
[INFO] checking tokio-sync-0.1.8 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate tokio-sync 0.1.8 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate tokio-sync 0.1.8 on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tokio-sync 0.1.8
[INFO] finished tweaking crates.io crate tokio-sync 0.1.8
[INFO] tweaked toml for crates.io crate tokio-sync 0.1.8 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e5e5800cdbf9dd8c3b8a262e2c14f848a9fa9da49862f1837d64c89a4c15f9fd
[INFO] running `Command { std: "docker" "start" "-a" "e5e5800cdbf9dd8c3b8a262e2c14f848a9fa9da49862f1837d64c89a4c15f9fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e5e5800cdbf9dd8c3b8a262e2c14f848a9fa9da49862f1837d64c89a4c15f9fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5e5800cdbf9dd8c3b8a262e2c14f848a9fa9da49862f1837d64c89a4c15f9fd", kill_on_drop: false }`
[INFO] [stdout] e5e5800cdbf9dd8c3b8a262e2c14f848a9fa9da49862f1837d64c89a4c15f9fd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 705e9710b0cd059805a4de3e9891721a295352017dba21b5c14752a91c073df9
[INFO] running `Command { std: "docker" "start" "-a" "705e9710b0cd059805a4de3e9891721a295352017dba21b5c14752a91c073df9", kill_on_drop: false }`
[INFO] [stderr]     Checking crossbeam-utils v0.7.2
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking tokio-sync v0.1.8
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking scoped-tls v0.1.2
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]     Checking loom v0.1.1
[INFO] [stderr]     Checking tokio-mock-task v0.1.1
[INFO] [stderr]     Checking tokio-sync v0.1.8 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/bytes-0.4.12/src/buf/buf.rs:19:9
[INFO] [stdout]     |
[INFO] [stdout] 19  | /         if let Some(ret) = ret {
[INFO] [stdout] 20  | |              // if the direct convertion was possible, advance and return
[INFO] [stdout] 21  | |             $this.advance($size);
[INFO] [stdout] 22  | |             return ret;
[INFO] [stdout] ...   |
[INFO] [stdout] 27  | |             return $conv(&buf);
[INFO] [stdout] 28  | |         }
[INFO] [stdout]     | |_________^ cannot satisfy `_ -> _`
[INFO] [stdout] ...
[INFO] [stdout] 335 |           buf_get_impl!(self, 2, BigEndian::read_u16);
[INFO] [stdout]     |           ------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `buf_get_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/bytes-0.4.12/src/buf/buf.rs:19:9
[INFO] [stdout]     |
[INFO] [stdout] 19  | /         if let Some(ret) = ret {
[INFO] [stdout] 20  | |              // if the direct convertion was possible, advance and return
[INFO] [stdout] 21  | |             $this.advance($size);
[INFO] [stdout] 22  | |             return ret;
[INFO] [stdout] ...   |
[INFO] [stdout] 27  | |             return $conv(&buf);
[INFO] [stdout] 28  | |         }
[INFO] [stdout]     | |_________^ cannot satisfy `_ -> _`
[INFO] [stdout] ...
[INFO] [stdout] 356 |           buf_get_impl!(self, 2, LittleEndian::read_u16);
[INFO] [stdout]     |           ---------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `buf_get_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/bytes-0.4.12/src/buf/buf.rs:19:9
[INFO] [stdout]     |
[INFO] [stdout] 19  | /         if let Some(ret) = ret {
[INFO] [stdout] 20  | |              // if the direct convertion was possible, advance and return
[INFO] [stdout] 21  | |             $this.advance($size);
[INFO] [stdout] 22  | |             return ret;
[INFO] [stdout] ...   |
[INFO] [stdout] 27  | |             return $conv(&buf);
[INFO] [stdout] 28  | |         }
[INFO] [stdout]     | |_________^ cannot satisfy `_ -> _`
[INFO] [stdout] ...
[INFO] [stdout] 385 |           buf_get_impl!(self, 2, BigEndian::read_i16);
[INFO] [stdout]     |           ------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `buf_get_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/bytes-0.4.12/src/buf/buf.rs:19:9
[INFO] [stdout]     |
[INFO] [stdout] 19  | /         if let Some(ret) = ret {
[INFO] [stdout] 20  | |              // if the direct convertion was possible, advance and return
[INFO] [stdout] 21  | |             $this.advance($size);
[INFO] [stdout] 22  | |             return ret;
[INFO] [stdout] ...   |
[INFO] [stdout] 27  | |             return $conv(&buf);
[INFO] [stdout] 28  | |         }
[INFO] [stdout]     | |_________^ cannot satisfy `_ -> _`
[INFO] [stdout] ...
[INFO] [stdout] 406 |           buf_get_impl!(self, 2, LittleEndian::read_i16);
[INFO] [stdout]     |           ---------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `buf_get_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/bytes-0.4.12/src/buf/buf.rs:19:9
[INFO] [stdout]     |
[INFO] [stdout] 19  | /         if let Some(ret) = ret {
[INFO] [stdout] 20  | |              // if the direct convertion was possible, advance and return
[INFO] [stdout] 21  | |             $this.advance($size);
[INFO] [stdout] 22  | |             return ret;
[INFO] [stdout] ...   |
[INFO] [stdout] 27  | |             return $conv(&buf);
[INFO] [stdout] 28  | |         }
[INFO] [stdout]     | |_________^ cannot satisfy `_ -> _`
[INFO] [stdout] ...
[INFO] [stdout] 435 |           buf_get_impl!(self, 4, BigEndian::read_u32);
[INFO] [stdout]     |           ------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `buf_get_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/bytes-0.4.12/src/buf/buf.rs:19:9
[INFO] [stdout]     |
[INFO] [stdout] 19  | /         if let Some(ret) = ret {
[INFO] [stdout] 20  | |              // if the direct convertion was possible, advance and return
[INFO] [stdout] 21  | |             $this.advance($size);
[INFO] [stdout] 22  | |             return ret;
[INFO] [stdout] ...   |
[INFO] [stdout] 27  | |             return $conv(&buf);
[INFO] [stdout] 28  | |         }
[INFO] [stdout]     | |_________^ cannot satisfy `_ -> _`
[INFO] [stdout] ...
[INFO] [stdout] 456 |           buf_get_impl!(self, 4, LittleEndian::read_u32);
[INFO] [stdout]     |           ---------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `buf_get_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/bytes-0.4.12/src/buf/buf.rs:19:9
[INFO] [stdout]     |
[INFO] [stdout] 19  | /         if let Some(ret) = ret {
[INFO] [stdout] 20  | |              // if the direct convertion was possible, advance and return
[INFO] [stdout] 21  | |             $this.advance($size);
[INFO] [stdout] 22  | |             return ret;
[INFO] [stdout] ...   |
[INFO] [stdout] 27  | |             return $conv(&buf);
[INFO] [stdout] 28  | |         }
[INFO] [stdout]     | |_________^ cannot satisfy `_ -> _`
[INFO] [stdout] ...
[INFO] [stdout] 485 |           buf_get_impl!(self, 4, BigEndian::read_i32);
[INFO] [stdout]     |           ------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `buf_get_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/bytes-0.4.12/src/buf/buf.rs:19:9
[INFO] [stdout]     |
[INFO] [stdout] 19  | /         if let Some(ret) = ret {
[INFO] [stdout] 20  | |              // if the direct convertion was possible, advance and return
[INFO] [stdout] 21  | |             $this.advance($size);
[INFO] [stdout] 22  | |             return ret;
[INFO] [stdout] ...   |
[INFO] [stdout] 27  | |             return $conv(&buf);
[INFO] [stdout] 28  | |         }
[INFO] [stdout]     | |_________^ cannot satisfy `_ -> _`
[INFO] [stdout] ...
[INFO] [stdout] 506 |           buf_get_impl!(self, 4, LittleEndian::read_i32);
[INFO] [stdout]     |           ---------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `buf_get_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/bytes-0.4.12/src/buf/buf.rs:19:9
[INFO] [stdout]     |
[INFO] [stdout] 19  | /         if let Some(ret) = ret {
[INFO] [stdout] 20  | |              // if the direct convertion was possible, advance and return
[INFO] [stdout] 21  | |             $this.advance($size);
[INFO] [stdout] 22  | |             return ret;
[INFO] [stdout] ...   |
[INFO] [stdout] 27  | |             return $conv(&buf);
[INFO] [stdout] 28  | |         }
[INFO] [stdout]     | |_________^ cannot satisfy `_ -> _`
[INFO] [stdout] ...
[INFO] [stdout] 535 |           buf_get_impl!(self, 8, BigEndian::read_u64);
[INFO] [stdout]     |           ------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `buf_get_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/bytes-0.4.12/src/buf/buf.rs:19:9
[INFO] [stdout]     |
[INFO] [stdout] 19  | /         if let Some(ret) = ret {
[INFO] [stdout] 20  | |              // if the direct convertion was possible, advance and return
[INFO] [stdout] 21  | |             $this.advance($size);
[INFO] [stdout] 22  | |             return ret;
[INFO] [stdout] ...   |
[INFO] [stdout] 27  | |             return $conv(&buf);
[INFO] [stdout] 28  | |         }
[INFO] [stdout]     | |_________^ cannot satisfy `_ -> _`
[INFO] [stdout] ...
[INFO] [stdout] 556 |           buf_get_impl!(self, 8, LittleEndian::read_u64);
[INFO] [stdout]     |           ---------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `buf_get_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/bytes-0.4.12/src/buf/buf.rs:19:9
[INFO] [stdout]     |
[INFO] [stdout] 19  | /         if let Some(ret) = ret {
[INFO] [stdout] 20  | |              // if the direct convertion was possible, advance and return
[INFO] [stdout] 21  | |             $this.advance($size);
[INFO] [stdout] 22  | |             return ret;
[INFO] [stdout] ...   |
[INFO] [stdout] 27  | |             return $conv(&buf);
[INFO] [stdout] 28  | |         }
[INFO] [stdout]     | |_________^ cannot satisfy `_ -> _`
[INFO] [stdout] ...
[INFO] [stdout] 585 |           buf_get_impl!(self, 8, BigEndian::read_i64);
[INFO] [stdout]     |           ------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `buf_get_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/bytes-0.4.12/src/buf/buf.rs:19:9
[INFO] [stdout]     |
[INFO] [stdout] 19  | /         if let Some(ret) = ret {
[INFO] [stdout] 20  | |              // if the direct convertion was possible, advance and return
[INFO] [stdout] 21  | |             $this.advance($size);
[INFO] [stdout] 22  | |             return ret;
[INFO] [stdout] ...   |
[INFO] [stdout] 27  | |             return $conv(&buf);
[INFO] [stdout] 28  | |         }
[INFO] [stdout]     | |_________^ cannot satisfy `_ -> _`
[INFO] [stdout] ...
[INFO] [stdout] 606 |           buf_get_impl!(self, 8, LittleEndian::read_i64);
[INFO] [stdout]     |           ---------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `buf_get_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/bytes-0.4.12/src/buf/buf.rs:19:9
[INFO] [stdout]     |
[INFO] [stdout] 19  | /         if let Some(ret) = ret {
[INFO] [stdout] 20  | |              // if the direct convertion was possible, advance and return
[INFO] [stdout] 21  | |             $this.advance($size);
[INFO] [stdout] 22  | |             return ret;
[INFO] [stdout] ...   |
[INFO] [stdout] 27  | |             return $conv(&buf);
[INFO] [stdout] 28  | |         }
[INFO] [stdout]     | |_________^ cannot satisfy `_ -> _`
[INFO] [stdout] ...
[INFO] [stdout] 828 |           buf_get_impl!(self, 4, BigEndian::read_f32);
[INFO] [stdout]     |           ------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `buf_get_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/bytes-0.4.12/src/buf/buf.rs:19:9
[INFO] [stdout]     |
[INFO] [stdout] 19  | /         if let Some(ret) = ret {
[INFO] [stdout] 20  | |              // if the direct convertion was possible, advance and return
[INFO] [stdout] 21  | |             $this.advance($size);
[INFO] [stdout] 22  | |             return ret;
[INFO] [stdout] ...   |
[INFO] [stdout] 27  | |             return $conv(&buf);
[INFO] [stdout] 28  | |         }
[INFO] [stdout]     | |_________^ cannot satisfy `_ -> _`
[INFO] [stdout] ...
[INFO] [stdout] 850 |           buf_get_impl!(self, 4, LittleEndian::read_f32);
[INFO] [stdout]     |           ---------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `buf_get_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/bytes-0.4.12/src/buf/buf.rs:19:9
[INFO] [stdout]     |
[INFO] [stdout] 19  | /         if let Some(ret) = ret {
[INFO] [stdout] 20  | |              // if the direct convertion was possible, advance and return
[INFO] [stdout] 21  | |             $this.advance($size);
[INFO] [stdout] 22  | |             return ret;
[INFO] [stdout] ...   |
[INFO] [stdout] 27  | |             return $conv(&buf);
[INFO] [stdout] 28  | |         }
[INFO] [stdout]     | |_________^ cannot satisfy `_ -> _`
[INFO] [stdout] ...
[INFO] [stdout] 880 |           buf_get_impl!(self, 8, BigEndian::read_f64);
[INFO] [stdout]     |           ------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `buf_get_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/bytes-0.4.12/src/buf/buf.rs:19:9
[INFO] [stdout]     |
[INFO] [stdout] 19  | /         if let Some(ret) = ret {
[INFO] [stdout] 20  | |              // if the direct convertion was possible, advance and return
[INFO] [stdout] 21  | |             $this.advance($size);
[INFO] [stdout] 22  | |             return ret;
[INFO] [stdout] ...   |
[INFO] [stdout] 27  | |             return $conv(&buf);
[INFO] [stdout] 28  | |         }
[INFO] [stdout]     | |_________^ cannot satisfy `_ -> _`
[INFO] [stdout] ...
[INFO] [stdout] 902 |           buf_get_impl!(self, 8, LittleEndian::read_f64);
[INFO] [stdout]     |           ---------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `buf_get_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking tokio-executor v0.1.10
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stdout] warning: use of deprecated function `std::sync::atomic::spin_loop_hint`: use hint::spin_loop instead
[INFO] [stdout]   --> src/loom.rs:36:26
[INFO] [stdout]    |
[INFO] [stdout] 36 |     ::std::sync::atomic::spin_loop_hint();
[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/mpsc/block.rs:366:29
[INFO] [stdout]     |
[INFO] [stdout] 366 |         let mut vals = mem::uninitialized();
[INFO] [stdout]     |                             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/oneshot.rs:133:66
[INFO] [stdout]     |
[INFO] [stdout] 133 |         tx_task: CausalCell::new(ManuallyDrop::new(unsafe { mem::uninitialized() })),
[INFO] [stdout]     |                                                                  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/oneshot.rs:134:66
[INFO] [stdout]     |
[INFO] [stdout] 134 |         rx_task: CausalCell::new(ManuallyDrop::new(unsafe { mem::uninitialized() })),
[INFO] [stdout]     |                                                                  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 16 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0284`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bytes` (lib) due to 17 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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/mpsc/block.rs:269:14
[INFO] [stdout]     |
[INFO] [stdout] 269 |             .compare_and_swap(ptr::null_mut(), block.as_ptr(), ordering);
[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/mpsc/block.rs:311:43
[INFO] [stdout]     |
[INFO] [stdout] 311 |         let next = NonNull::new(self.next.compare_and_swap(
[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/mpsc/bounded.rs:223:32
[INFO] [stdout]     |
[INFO] [stdout] 223 |         write!(fmt, "{}", self.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/mpsc/bounded.rs:263:32
[INFO] [stdout]     |
[INFO] [stdout] 263 |         write!(fmt, "{}", self.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/mpsc/bounded.rs:293:32
[INFO] [stdout]     |
[INFO] [stdout] 293 |         write!(fmt, "{}", self.description())
[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/mpsc/list.rs:148:26
[INFO] [stdout]     |
[INFO] [stdout] 148 |                         .compare_and_swap(block_ptr, next_block.as_ptr(), Release);
[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/mpsc/unbounded.rs:145:32
[INFO] [stdout]     |
[INFO] [stdout] 145 |         write!(fmt, "{}", self.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/mpsc/unbounded.rs:167:32
[INFO] [stdout]     |
[INFO] [stdout] 167 |         write!(fmt, "{}", self.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/mpsc/unbounded.rs:189:32
[INFO] [stdout]     |
[INFO] [stdout] 189 |         write!(fmt, "{}", self.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/oneshot.rs:50:36
[INFO] [stdout]    |
[INFO] [stdout] 50 |             write!(fmt, "{}", self.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/oneshot.rs:65:36
[INFO] [stdout]    |
[INFO] [stdout] 65 |             write!(fmt, "{}", self.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/semaphore.rs:688:32
[INFO] [stdout]     |
[INFO] [stdout] 688 |         write!(fmt, "{}", self.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/semaphore.rs:734:32
[INFO] [stdout]     |
[INFO] [stdout] 734 |         write!(fmt, "{}", self.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/task/atomic_task.rs:179:26
[INFO] [stdout]     |
[INFO] [stdout] 179 |         match self.state.compare_and_swap(WAITING, REGISTERING, Acquire) {
[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/watch.rs:126:36
[INFO] [stdout]     |
[INFO] [stdout] 126 |             write!(fmt, "{}", self.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/watch.rs:141:36
[INFO] [stdout]     |
[INFO] [stdout] 141 |             write!(fmt, "{}", self.description())
[INFO] [stdout]     |                                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `inner` is never read
[INFO] [stdout]    --> src/watch.rs:118:20
[INFO] [stdout]     |
[INFO] [stdout] 117 |     pub struct SendError<T> {
[INFO] [stdout]     |                --------- field in this struct
[INFO] [stdout] 118 |         pub(crate) inner: T,
[INFO] [stdout]     |                    ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `SendError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `Task` does not permit being left uninitialized
[INFO] [stdout]    --> src/oneshot.rs:133:61
[INFO] [stdout]     |
[INFO] [stdout] 133 |         tx_task: CausalCell::new(ManuallyDrop::new(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 `Task` does not permit being left uninitialized
[INFO] [stdout]    --> src/oneshot.rs:134:61
[INFO] [stdout]     |
[INFO] [stdout] 134 |         rx_task: CausalCell::new(ManuallyDrop::new(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] [stdout] warning: 23 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "705e9710b0cd059805a4de3e9891721a295352017dba21b5c14752a91c073df9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "705e9710b0cd059805a4de3e9891721a295352017dba21b5c14752a91c073df9", kill_on_drop: false }`
[INFO] [stdout] 705e9710b0cd059805a4de3e9891721a295352017dba21b5c14752a91c073df9