[INFO] fetching crate forkjoin 2.3.0...
[INFO] checking forkjoin-2.3.0 against beta for pr-78714
[INFO] extracting crate forkjoin 2.3.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate forkjoin 2.3.0 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate forkjoin 2.3.0
[INFO] finished tweaking crates.io crate forkjoin 2.3.0
[INFO] tweaked toml for crates.io crate forkjoin 2.3.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ecc1cd5348cf897c003081f2ca1081eba6ae753fee7d2cb07923e7f64d0bb358
[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" "ecc1cd5348cf897c003081f2ca1081eba6ae753fee7d2cb07923e7f64d0bb358", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ecc1cd5348cf897c003081f2ca1081eba6ae753fee7d2cb07923e7f64d0bb358", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ecc1cd5348cf897c003081f2ca1081eba6ae753fee7d2cb07923e7f64d0bb358", kill_on_drop: false }`
[INFO] [stdout] ecc1cd5348cf897c003081f2ca1081eba6ae753fee7d2cb07923e7f64d0bb358
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 52081c95bd32b0907f8c95d342de130a0e817085fcfef4606d9670d30fb48612
[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" "52081c95bd32b0907f8c95d342de130a0e817085fcfef4606d9670d30fb48612", kill_on_drop: false }`
[INFO] [stderr]     Checking deque v0.2.3
[INFO] [stderr]     Checking forkjoin v2.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: could not find `funcs` in `libc`
[INFO] [stdout]   --> src/workerthread.rs:21:11
[INFO] [stdout]    |
[INFO] [stdout] 21 | use libc::funcs::posix88::unistd::usleep;
[INFO] [stdout]    |           ^^^^^ could not find `funcs` in `libc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `funcs` in `libc`
[INFO] [stdout]   --> src/workerthread.rs:21:11
[INFO] [stdout]    |
[INFO] [stdout] 21 | use libc::funcs::posix88::unistd::usleep;
[INFO] [stdout]    |           ^^^^^ could not find `funcs` in `libc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `JoinGuard` in module `thread`
[INFO] [stdout]   --> src/workerthread.rs:81:39
[INFO] [stdout]    |
[INFO] [stdout] 81 |     pub fn spawn(mut self) -> thread::JoinGuard<'a, ()> {
[INFO] [stdout]    |                                       ^^^^^^^^^ not found in `thread`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `usleep` in this scope
[INFO] [stdout]    --> src/workerthread.rs:147:34
[INFO] [stdout]     |
[INFO] [stdout] 147 |                         unsafe { usleep(backoff_sleep); }
[INFO] [stdout]     |                                  ^^^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]     |
[INFO] [stdout] 16  | use libc::usleep;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `JoinGuard` in module `thread`
[INFO] [stdout]   --> src/poolsupervisor.rs:42:24
[INFO] [stdout]    |
[INFO] [stdout] 42 |     joinguard: thread::JoinGuard<'thread, ()>,
[INFO] [stdout]    |                        ^^^^^^^^^ not found in `thread`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `JoinGuard` in module `thread`
[INFO] [stdout]   --> src/poolsupervisor.rs:54:79
[INFO] [stdout]    |
[INFO] [stdout] 54 |     pub fn spawn(nthreads: usize) -> (Sender<SupervisorMsg<Arg,Ret>>, thread::JoinGuard<'t, ()>) {
[INFO] [stdout]    |                                                                               ^^^^^^^^^ not found in `thread`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `JoinGuard` in module `thread`
[INFO] [stdout]    --> src/poolsupervisor.rs:122:38
[INFO] [stdout]     |
[INFO] [stdout] 122 |     fn start_thread(self) -> thread::JoinGuard<'t, ()> {
[INFO] [stdout]     |                                      ^^^^^^^^^ not found in `thread`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `JoinGuard` in module `thread`
[INFO] [stdout]    --> src/lib.rs:449:24
[INFO] [stdout]     |
[INFO] [stdout] 449 |     joinguard: thread::JoinGuard<'a, ()>,
[INFO] [stdout]     |                        ^^^^^^^^^ not found in `thread`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]    --> src/lib.rs:221:1
[INFO] [stdout]     |
[INFO] [stdout] 221 | #![feature(unique)]
[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:222:1
[INFO] [stdout]     |
[INFO] [stdout] 222 | #![feature(scoped)]
[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:223:1
[INFO] [stdout]     |
[INFO] [stdout] 223 | #![feature(libc)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stdout]    --> src/lib.rs:229:1
[INFO] [stdout]     |
[INFO] [stdout] 229 | extern crate libc;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #27812 <https://github.com/rust-lang/rust/issues/27812> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'ptr_internals': use `NonNull` instead and consider `PhantomData<T>` (if you also use `#[may_dangle]`), `Send`, and/or `Sync`
[INFO] [stdout]    --> src/lib.rs:231:5
[INFO] [stdout]     |
[INFO] [stdout] 231 | use std::ptr::Unique;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'ptr_internals': use `NonNull` instead and consider `PhantomData<T>` (if you also use `#[may_dangle]`), `Send`, and/or `Sync`
[INFO] [stdout]    --> src/lib.rs:348:10
[INFO] [stdout]     |
[INFO] [stdout] 348 |     Join(Unique<Ret>, Arc<JoinBarrier<Ret>>),
[INFO] [stdout]     |          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'ptr_internals': use `NonNull` instead and consider `PhantomData<T>` (if you also use `#[may_dangle]`), `Send`, and/or `Sync`
[INFO] [stdout]   --> src/workerthread.rs:18:16
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::ptr::{Unique,write};
[INFO] [stdout]    |                ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'ptr_internals': use `NonNull` instead and consider `PhantomData<T>` (if you also use `#[may_dangle]`), `Send`, and/or `Sync`
[INFO] [stdout]    --> src/workerthread.rs:290:55
[INFO] [stdout]     |
[INFO] [stdout] 290 | fn create_result_vec<Ret>(n: usize) -> (Vec<Ret>, Vec<Unique<Ret>>) {
[INFO] [stdout]     |                                                       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'ptr_internals': use `NonNull` instead and consider `PhantomData<T>` (if you also use `#[may_dangle]`), `Send`, and/or `Sync`
[INFO] [stdout]    --> src/workerthread.rs:292:27
[INFO] [stdout]     |
[INFO] [stdout] 292 |     let mut rets_ptr: Vec<Unique<Ret>> = Vec::with_capacity(n);
[INFO] [stdout]     |                           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'ptr_internals': use `NonNull` instead and consider `PhantomData<T>` (if you also use `#[may_dangle]`), `Send`, and/or `Sync`
[INFO] [stdout]    --> src/workerthread.rs:297:27
[INFO] [stdout]     |
[INFO] [stdout] 297 |             rets_ptr.push(Unique::new(ptr_0.offset(i)));
[INFO] [stdout]     |                           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `JoinGuard` in module `thread`
[INFO] [stdout]   --> src/workerthread.rs:81:39
[INFO] [stdout]    |
[INFO] [stdout] 81 |     pub fn spawn(mut self) -> thread::JoinGuard<'a, ()> {
[INFO] [stdout]    |                                       ^^^^^^^^^ not found in `thread`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `usleep` in this scope
[INFO] [stdout]    --> src/workerthread.rs:147:34
[INFO] [stdout]     |
[INFO] [stdout] 147 |                         unsafe { usleep(backoff_sleep); }
[INFO] [stdout]     |                                  ^^^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]     |
[INFO] [stdout] 16  | use libc::usleep;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `JoinGuard` in module `thread`
[INFO] [stdout]   --> src/poolsupervisor.rs:42:24
[INFO] [stdout]    |
[INFO] [stdout] 42 |     joinguard: thread::JoinGuard<'thread, ()>,
[INFO] [stdout]    |                        ^^^^^^^^^ not found in `thread`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `JoinGuard` in module `thread`
[INFO] [stdout]   --> src/poolsupervisor.rs:54:79
[INFO] [stdout]    |
[INFO] [stdout] 54 |     pub fn spawn(nthreads: usize) -> (Sender<SupervisorMsg<Arg,Ret>>, thread::JoinGuard<'t, ()>) {
[INFO] [stdout]    |                                                                               ^^^^^^^^^ not found in `thread`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `JoinGuard` in module `thread`
[INFO] [stdout]    --> src/poolsupervisor.rs:122:38
[INFO] [stdout]     |
[INFO] [stdout] 122 |     fn start_thread(self) -> thread::JoinGuard<'t, ()> {
[INFO] [stdout]     |                                      ^^^^^^^^^ not found in `thread`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `JoinGuard` in module `thread`
[INFO] [stdout]    --> src/lib.rs:449:24
[INFO] [stdout]     |
[INFO] [stdout] 449 |     joinguard: thread::JoinGuard<'a, ()>,
[INFO] [stdout]     |                        ^^^^^^^^^ not found in `thread`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]    --> src/lib.rs:221:1
[INFO] [stdout]     |
[INFO] [stdout] 221 | #![feature(unique)]
[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:222:1
[INFO] [stdout]     |
[INFO] [stdout] 222 | #![feature(scoped)]
[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:223:1
[INFO] [stdout]     |
[INFO] [stdout] 223 | #![feature(libc)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stdout]    --> src/lib.rs:229:1
[INFO] [stdout]     |
[INFO] [stdout] 229 | extern crate libc;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #27812 <https://github.com/rust-lang/rust/issues/27812> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'ptr_internals': use `NonNull` instead and consider `PhantomData<T>` (if you also use `#[may_dangle]`), `Send`, and/or `Sync`
[INFO] [stdout]    --> src/lib.rs:231:5
[INFO] [stdout]     |
[INFO] [stdout] 231 | use std::ptr::Unique;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'ptr_internals': use `NonNull` instead and consider `PhantomData<T>` (if you also use `#[may_dangle]`), `Send`, and/or `Sync`
[INFO] [stdout]    --> src/lib.rs:348:10
[INFO] [stdout]     |
[INFO] [stdout] 348 |     Join(Unique<Ret>, Arc<JoinBarrier<Ret>>),
[INFO] [stdout]     |          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'ptr_internals': use `NonNull` instead and consider `PhantomData<T>` (if you also use `#[may_dangle]`), `Send`, and/or `Sync`
[INFO] [stdout]   --> src/workerthread.rs:18:16
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::ptr::{Unique,write};
[INFO] [stdout]    |                ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'ptr_internals': use `NonNull` instead and consider `PhantomData<T>` (if you also use `#[may_dangle]`), `Send`, and/or `Sync`
[INFO] [stdout]    --> src/workerthread.rs:290:55
[INFO] [stdout]     |
[INFO] [stdout] 290 | fn create_result_vec<Ret>(n: usize) -> (Vec<Ret>, Vec<Unique<Ret>>) {
[INFO] [stdout]     |                                                       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'ptr_internals': use `NonNull` instead and consider `PhantomData<T>` (if you also use `#[may_dangle]`), `Send`, and/or `Sync`
[INFO] [stdout]    --> src/workerthread.rs:292:27
[INFO] [stdout]     |
[INFO] [stdout] 292 |     let mut rets_ptr: Vec<Unique<Ret>> = Vec::with_capacity(n);
[INFO] [stdout]     |                           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'ptr_internals': use `NonNull` instead and consider `PhantomData<T>` (if you also use `#[may_dangle]`), `Send`, and/or `Sync`
[INFO] [stdout]    --> src/workerthread.rs:297:27
[INFO] [stdout]     |
[INFO] [stdout] 297 |             rets_ptr.push(Unique::new(ptr_0.offset(i)));
[INFO] [stdout]     |                           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0392]: parameter `'thread` is never used
[INFO] [stdout]   --> src/poolsupervisor.rs:45:33
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub struct PoolSupervisorThread<'thread, Arg: Send, Ret: Send + Sync> {
[INFO] [stdout]    |                                 ^^^^^^^ unused parameter
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing `'thread`, referring to it in a field, or using a marker such as `PhantomData`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 18 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0392, E0412, E0425, E0433, E0554, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0392`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `forkjoin`
[INFO] [stdout] error[E0392]: parameter `'thread` is never used
[INFO] [stdout]   --> src/poolsupervisor.rs:45:33
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub struct PoolSupervisorThread<'thread, Arg: Send, Ret: Send + Sync> {
[INFO] [stdout]    |                                 ^^^^^^^ unused parameter
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing `'thread`, referring to it in a field, or using a marker such as `PhantomData`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 18 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0392, E0412, E0425, E0433, E0554, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0392`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "52081c95bd32b0907f8c95d342de130a0e817085fcfef4606d9670d30fb48612", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52081c95bd32b0907f8c95d342de130a0e817085fcfef4606d9670d30fb48612", kill_on_drop: false }`
[INFO] [stdout] 52081c95bd32b0907f8c95d342de130a0e817085fcfef4606d9670d30fb48612