[INFO] fetching crate forkjoin 2.3.0...
[INFO] testing forkjoin-2.3.0 against 1.75.0 for beta-1.76-1
[INFO] extracting crate forkjoin 2.3.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate forkjoin 2.3.0 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded deque v0.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 556d653d25ecb0e27e946e0cceeeff51fdced05aa3a376793724853a147d5e1d
[INFO] running `Command { std: "docker" "start" "-a" "556d653d25ecb0e27e946e0cceeeff51fdced05aa3a376793724853a147d5e1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "556d653d25ecb0e27e946e0cceeeff51fdced05aa3a376793724853a147d5e1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "556d653d25ecb0e27e946e0cceeeff51fdced05aa3a376793724853a147d5e1d", kill_on_drop: false }`
[INFO] [stdout] 556d653d25ecb0e27e946e0cceeeff51fdced05aa3a376793724853a147d5e1d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f0a14042621ffc52048b7f89e94d9418cbf19e8eee36fc64aee5e937488d8bc0
[INFO] running `Command { std: "docker" "start" "-a" "f0a14042621ffc52048b7f89e94d9418cbf19e8eee36fc64aee5e937488d8bc0", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling num_cpus v0.2.13
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling deque v0.2.3
[INFO] [stderr]    Compiling 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[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[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[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[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> src/lib.rs:221:12
[INFO] [stdout]     |
[INFO] [stdout] 221 | #![feature(unique)]
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> src/lib.rs:222:12
[INFO] [stdout]     |
[INFO] [stdout] 222 | #![feature(scoped)]
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> src/lib.rs:223:12
[INFO] [stdout]     |
[INFO] [stdout] 223 | #![feature(libc)]
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `unique`
[INFO] [stdout]    --> src/lib.rs:221:12
[INFO] [stdout]     |
[INFO] [stdout] 221 | #![feature(unique)]
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `scoped`
[INFO] [stdout]    --> src/lib.rs:222:12
[INFO] [stdout]     |
[INFO] [stdout] 222 | #![feature(scoped)]
[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[E0599]: no method named `scoped` found for struct `Builder` in the current scope
[INFO] [stdout]   --> src/workerthread.rs:85:33
[INFO] [stdout]    |
[INFO] [stdout] 85 |         let joinguard = builder.scoped(move|| {
[INFO] [stdout]    |                         --------^^^^^^ help: there is a method with a similar name: `spawn_scoped`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0614]: type `Unique<Ret>` cannot be dereferenced
[INFO] [stdout]    --> src/workerthread.rs:249:32
[INFO] [stdout]     |
[INFO] [stdout] 249 |                 unsafe { write(**ptr, value); } // Writes without dropping since only null in place
[INFO] [stdout]     |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'ptr_internals'
[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[E0308]: mismatched types
[INFO] [stdout]    --> src/workerthread.rs:297:27
[INFO] [stdout]     |
[INFO] [stdout] 297 |             rets_ptr.push(Unique::new(ptr_0.offset(i)));
[INFO] [stdout]     |                      ---- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `Unique<Ret>`, found `Option<Unique<Ret>>`
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      arguments to this method are incorrect
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected struct `Unique<_>`
[INFO] [stdout]                  found enum `Option<Unique<_>>`
[INFO] [stdout] note: method defined here
[INFO] [stdout]    --> /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/alloc/src/vec/mod.rs:1880:12
[INFO] [stdout] help: consider using `Option::expect` to unwrap the `Option<Unique<Ret>>` value, panicking if the value is an `Option::None`
[INFO] [stdout]     |
[INFO] [stdout] 297 |             rets_ptr.push(Unique::new(ptr_0.offset(i)).expect("REASON"));
[INFO] [stdout]     |                                                       +++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `scoped` found for struct `Builder` in the current scope
[INFO] [stdout]    --> src/poolsupervisor.rs:124:33
[INFO] [stdout]     |
[INFO] [stdout] 124 |         let joinguard = builder.scoped(move|| {
[INFO] [stdout]     |                         --------^^^^^^ help: there is a method with a similar name: `spawn_scoped`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 24 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0392, E0412, E0433, E0554, E0599, E0614, E0635, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `forkjoin` (lib) due to 25 previous errors
[INFO] running `Command { std: "docker" "inspect" "f0a14042621ffc52048b7f89e94d9418cbf19e8eee36fc64aee5e937488d8bc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0a14042621ffc52048b7f89e94d9418cbf19e8eee36fc64aee5e937488d8bc0", kill_on_drop: false }`
[INFO] [stdout] f0a14042621ffc52048b7f89e94d9418cbf19e8eee36fc64aee5e937488d8bc0
[INFO] testing forkjoin-2.3.0 against beta-2023-12-22 for beta-1.76-1
[INFO] extracting crate forkjoin 2.3.0 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate forkjoin 2.3.0 on toolchain beta-2023-12-22
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-1-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "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" "+beta-2023-12-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 48c700ef487c6ebe01c10597cf6104c732c7452bda52707f6df33e2190101d9e
[INFO] running `Command { std: "docker" "start" "-a" "48c700ef487c6ebe01c10597cf6104c732c7452bda52707f6df33e2190101d9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "48c700ef487c6ebe01c10597cf6104c732c7452bda52707f6df33e2190101d9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48c700ef487c6ebe01c10597cf6104c732c7452bda52707f6df33e2190101d9e", kill_on_drop: false }`
[INFO] [stdout] 48c700ef487c6ebe01c10597cf6104c732c7452bda52707f6df33e2190101d9e
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 63790c44971bfc9aa0df36b95d46f4f8c1b0520cbf3565e79ed653255ada8785
[INFO] running `Command { std: "docker" "start" "-a" "63790c44971bfc9aa0df36b95d46f4f8c1b0520cbf3565e79ed653255ada8785", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling num_cpus v0.2.13
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling deque v0.2.3
[INFO] [stderr]    Compiling 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[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[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[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[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]    --> src/lib.rs:221:12
[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:222:12
[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:223:12
[INFO] [stdout]     |
[INFO] [stdout] 223 | #![feature(libc)]
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `unique`
[INFO] [stdout]    --> src/lib.rs:221:12
[INFO] [stdout]     |
[INFO] [stdout] 221 | #![feature(unique)]
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `scoped`
[INFO] [stdout]    --> src/lib.rs:222:12
[INFO] [stdout]     |
[INFO] [stdout] 222 | #![feature(scoped)]
[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[E0599]: no method named `scoped` found for struct `Builder` in the current scope
[INFO] [stdout]   --> src/workerthread.rs:85:33
[INFO] [stdout]    |
[INFO] [stdout] 85 |         let joinguard = builder.scoped(move|| {
[INFO] [stdout]    |                         --------^^^^^^ help: there is a method with a similar name: `spawn_scoped`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0614]: type `Unique<Ret>` cannot be dereferenced
[INFO] [stdout]    --> src/workerthread.rs:249:32
[INFO] [stdout]     |
[INFO] [stdout] 249 |                 unsafe { write(**ptr, value); } // Writes without dropping since only null in place
[INFO] [stdout]     |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'ptr_internals'
[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[E0308]: mismatched types
[INFO] [stdout]    --> src/workerthread.rs:297:27
[INFO] [stdout]     |
[INFO] [stdout] 297 |             rets_ptr.push(Unique::new(ptr_0.offset(i)));
[INFO] [stdout]     |                      ---- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `Unique<Ret>`, found `Option<Unique<Ret>>`
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      arguments to this method are incorrect
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected struct `Unique<_>`
[INFO] [stdout]                  found enum `Option<Unique<_>>`
[INFO] [stdout] note: method defined here
[INFO] [stdout]    --> /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/alloc/src/vec/mod.rs:1915:12
[INFO] [stdout] help: consider using `Option::expect` to unwrap the `Option<Unique<Ret>>` value, panicking if the value is an `Option::None`
[INFO] [stdout]     |
[INFO] [stdout] 297 |             rets_ptr.push(Unique::new(ptr_0.offset(i)).expect("REASON"));
[INFO] [stdout]     |                                                       +++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `scoped` found for struct `Builder` in the current scope
[INFO] [stdout]    --> src/poolsupervisor.rs:124:33
[INFO] [stdout]     |
[INFO] [stdout] 124 |         let joinguard = builder.scoped(move|| {
[INFO] [stdout]     |                         --------^^^^^^ help: there is a method with a similar name: `spawn_scoped`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 24 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0392, E0412, E0433, E0554, E0599, E0614, E0635, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `forkjoin` (lib) due to 25 previous errors
[INFO] running `Command { std: "docker" "inspect" "63790c44971bfc9aa0df36b95d46f4f8c1b0520cbf3565e79ed653255ada8785", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63790c44971bfc9aa0df36b95d46f4f8c1b0520cbf3565e79ed653255ada8785", kill_on_drop: false }`
[INFO] [stdout] 63790c44971bfc9aa0df36b95d46f4f8c1b0520cbf3565e79ed653255ada8785
