[INFO] fetching crate simple-rc-async 0.1.1...
[INFO] checking simple-rc-async-0.1.1 against 1.95.0 for pr-155915
[INFO] extracting crate simple-rc-async 0.1.1 into /workspace/builds/worker-2-tc1/source
[INFO] removed /workspace/builds/worker-2-tc1/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate simple-rc-async 0.1.1
[INFO] finished tweaking crates.io crate simple-rc-async 0.1.1
[INFO] tweaked toml for crates.io crate simple-rc-async 0.1.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate simple-rc-async 0.1.1 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate simple-rc-async 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aaa4b9de5524a2ef348eac4bc15cb60f2334eb3f6fe0d7fc4342110822d0f61e
[INFO] running `Command { std: "docker" "start" "-a" "aaa4b9de5524a2ef348eac4bc15cb60f2334eb3f6fe0d7fc4342110822d0f61e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aaa4b9de5524a2ef348eac4bc15cb60f2334eb3f6fe0d7fc4342110822d0f61e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aaa4b9de5524a2ef348eac4bc15cb60f2334eb3f6fe0d7fc4342110822d0f61e", kill_on_drop: false }`
[INFO] [stdout] aaa4b9de5524a2ef348eac4bc15cb60f2334eb3f6fe0d7fc4342110822d0f61e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b0d835b8cebe3ad67abde25c372ffdc328ea43c2d0b93b342d2e23238b0e5111
[INFO] running `Command { std: "docker" "start" "-a" "b0d835b8cebe3ad67abde25c372ffdc328ea43c2d0b93b342d2e23238b0e5111", kill_on_drop: false }`
[INFO] [stderr]    Compiling convert_case v0.7.1
[INFO] [stderr]     Checking futures-channel v0.3.31
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling derive_more-impl v2.0.1
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking futures-executor v0.3.31
[INFO] [stderr]     Checking futures v0.3.31
[INFO] [stderr]     Checking derive_more v2.0.1
[INFO] [stderr]     Checking simple-rc-async v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(local_waker)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Cell` and `os::unix::thread`
[INFO] [stdout]  --> src/sync/broadcast.rs:1:37
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{borrow::BorrowMut, cell::{Cell, RefCell}, hash::Hash, ops::Deref, os::unix::thread, pin::Pin, rc::{Rc, Weak}, task::{Contex...
[INFO] [stdout]   |                                     ^^^^                                    ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures_core::Future`
[INFO] [stdout]  --> src/sync/broadcast.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use futures_core::Future;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Cell` and `os::unix::thread`
[INFO] [stdout]  --> src/sync/broadcastque.rs:1:37
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{borrow::BorrowMut, cell::{Cell, RefCell}, collections::VecDeque, ops::Deref, os::unix::thread, pin::Pin, rc::{Rc, Weak}, ta...
[INFO] [stdout]   |                                     ^^^^                                               ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures_core::Future`
[INFO] [stdout]  --> src/sync/broadcastque.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use futures_core::Future;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `cell_update` has been stable since 1.88.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(cell_update)]
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `borrow::BorrowMut`
[INFO] [stdout]  --> src/sync/broadcast.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{borrow::BorrowMut, cell::{Cell, RefCell}, hash::Hash, ops::Deref, os::unix::thread, pin::Pin, rc::{Rc, Weak}, task::{Contex...
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hash::Hash`
[INFO] [stdout]  --> src/sync/broadcast.rs:1:53
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{borrow::BorrowMut, cell::{Cell, RefCell}, hash::Hash, ops::Deref, os::unix::thread, pin::Pin, rc::{Rc, Weak}, task::{Contex...
[INFO] [stdout]   |                                                     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `borrow::BorrowMut`
[INFO] [stdout]  --> src/sync/broadcastque.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{borrow::BorrowMut, cell::{Cell, RefCell}, collections::VecDeque, ops::Deref, os::unix::thread, pin::Pin, rc::{Rc, Weak}, ta...
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `simple-rc-async` (lib) due to 1 previous error; 8 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(local_waker)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Cell` and `os::unix::thread`
[INFO] [stdout]  --> src/sync/broadcast.rs:1:37
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{borrow::BorrowMut, cell::{Cell, RefCell}, hash::Hash, ops::Deref, os::unix::thread, pin::Pin, rc::{Rc, Weak}, task::{Contex...
[INFO] [stdout]   |                                     ^^^^                                    ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures_core::Future`
[INFO] [stdout]  --> src/sync/broadcast.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use futures_core::Future;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Cell` and `os::unix::thread`
[INFO] [stdout]  --> src/sync/broadcastque.rs:1:37
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{borrow::BorrowMut, cell::{Cell, RefCell}, collections::VecDeque, ops::Deref, os::unix::thread, pin::Pin, rc::{Rc, Weak}, ta...
[INFO] [stdout]   |                                     ^^^^                                               ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures_core::Future`
[INFO] [stdout]  --> src/sync/broadcastque.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use futures_core::Future;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `cell_update` has been stable since 1.88.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(cell_update)]
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `borrow::BorrowMut`
[INFO] [stdout]  --> src/sync/broadcast.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{borrow::BorrowMut, cell::{Cell, RefCell}, hash::Hash, ops::Deref, os::unix::thread, pin::Pin, rc::{Rc, Weak}, task::{Contex...
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hash::Hash`
[INFO] [stdout]  --> src/sync/broadcast.rs:1:53
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{borrow::BorrowMut, cell::{Cell, RefCell}, hash::Hash, ops::Deref, os::unix::thread, pin::Pin, rc::{Rc, Weak}, task::{Contex...
[INFO] [stdout]   |                                                     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `borrow::BorrowMut`
[INFO] [stdout]  --> src/sync/broadcastque.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{borrow::BorrowMut, cell::{Cell, RefCell}, collections::VecDeque, ops::Deref, os::unix::thread, pin::Pin, rc::{Rc, Weak}, ta...
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `simple-rc-async` (lib test) due to 1 previous error; 8 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "b0d835b8cebe3ad67abde25c372ffdc328ea43c2d0b93b342d2e23238b0e5111", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0d835b8cebe3ad67abde25c372ffdc328ea43c2d0b93b342d2e23238b0e5111", kill_on_drop: false }`
[INFO] [stdout] b0d835b8cebe3ad67abde25c372ffdc328ea43c2d0b93b342d2e23238b0e5111
