[INFO] fetching crate tokio-lk 0.2.2...
[INFO] checking tokio-lk-0.2.2 against try#919137c0f5006b7edb81cae76cfeed542cd38b82 for pr-116494-1
[INFO] extracting crate tokio-lk 0.2.2 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate tokio-lk 0.2.2 on toolchain 919137c0f5006b7edb81cae76cfeed542cd38b82
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+919137c0f5006b7edb81cae76cfeed542cd38b82" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tokio-lk 0.2.2
[INFO] finished tweaking crates.io crate tokio-lk 0.2.2
[INFO] tweaked toml for crates.io crate tokio-lk 0.2.2 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+919137c0f5006b7edb81cae76cfeed542cd38b82" "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" "+919137c0f5006b7edb81cae76cfeed542cd38b82" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4f8da3c744d2da974e54ce020a79f4ad54313e914ebeaab8fc086f07e8d8b066" "/opt/rustwide/cargo-home/bin/cargo" "+919137c0f5006b7edb81cae76cfeed542cd38b82" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] db30d6b390949189a5913d736d95916a390beffe4813d9596a32ea88dc989962
[INFO] running `Command { std: "docker" "start" "-a" "db30d6b390949189a5913d736d95916a390beffe4813d9596a32ea88dc989962", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "db30d6b390949189a5913d736d95916a390beffe4813d9596a32ea88dc989962", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db30d6b390949189a5913d736d95916a390beffe4813d9596a32ea88dc989962", kill_on_drop: false }`
[INFO] [stdout] db30d6b390949189a5913d736d95916a390beffe4813d9596a32ea88dc989962
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4f8da3c744d2da974e54ce020a79f4ad54313e914ebeaab8fc086f07e8d8b066" "/opt/rustwide/cargo-home/bin/cargo" "+919137c0f5006b7edb81cae76cfeed542cd38b82" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aced9a2a93810ed1aa2a2fe9d450a88fb34cff86a744de1e4fb206f372d46b8e
[INFO] running `Command { std: "docker" "start" "-a" "aced9a2a93810ed1aa2a2fe9d450a88fb34cff86a744de1e4fb206f372d46b8e", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]    Compiling proc-macro-hack v0.5.20+deprecated
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]    Compiling futures-task v0.3.28
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]     Checking futures-sink v0.3.28
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling once_cell v1.18.0
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]     Checking memchr v2.6.4
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking futures-io v0.3.28
[INFO] [stderr]     Checking pin-project-lite v0.2.13
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]     Checking pin-project-lite v0.1.12
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling hashbrown v0.7.2
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling syn v2.0.38
[INFO] [stderr]    Compiling getrandom v0.2.10
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking crossbeam-deque v0.7.4
[INFO] [stderr]    Compiling const-random-macro v0.1.15
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]     Checking const-random v0.1.15
[INFO] [stderr]     Checking ahash v0.3.8
[INFO] [stderr]    Compiling futures-macro v0.3.28
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]     Checking futures-executor v0.3.28
[INFO] [stderr]     Checking futures v0.3.28
[INFO] [stderr]     Checking tokio-lk v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes
[INFO] [stdout]   --> src/lib.rs:66:18
[INFO] [stdout]    |
[INFO] [stdout] 66 | #![feature(test, specialization)]
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]    = help: consider using `min_specialization` instead, which is more stable and complete
[INFO] [stdout]    = note: `#[warn(incomplete_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes
[INFO] [stdout]   --> src/lib.rs:66:18
[INFO] [stdout]    |
[INFO] [stdout] 66 | #![feature(test, specialization)]
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]    = help: consider using `min_specialization` instead, which is more stable and complete
[INFO] [stdout]    = note: `#[warn(incomplete_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0391]: cycle detected when computing whether impls specialize one another
[INFO] [stdout]    --> src/lib.rs:336:1
[INFO] [stdout]     |
[INFO] [stdout] 336 | default impl<T> Destruct<T> for Lock<T> {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: ...which requires evaluating trait selection obligation `Lock<alloc::sync::Arc<std::sync::mutex::Mutex<hashbrown::map::HashMap<usize, alloc::sync::Arc<(core::sync::atomic::AtomicUsize, core::sync::atomic::AtomicUsize, atomic_serial_waker::AtomicSerialWaker)>>>>>: Destruct<alloc::sync::Arc<std::sync::mutex::Mutex<hashbrown::map::HashMap<usize, alloc::sync::Arc<(core::sync::atomic::AtomicUsize, core::sync::atomic::AtomicUsize, atomic_serial_waker::AtomicSerialWaker)>>>>>`...
[INFO] [stdout]     = note: ...which again requires computing whether impls specialize one another, completing the cycle
[INFO] [stdout] note: cycle used when building specialization graph of trait `Destruct`
[INFO] [stdout]    --> src/lib.rs:332:1
[INFO] [stdout]     |
[INFO] [stdout] 332 | pub trait Destruct<T> {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0391`.
[INFO] [stdout] 
[INFO] [stdout] error[E0391]: cycle detected when computing whether impls specialize one another
[INFO] [stdout]    --> src/lib.rs:336:1
[INFO] [stdout]     |
[INFO] [stdout] 336 | default impl<T> Destruct<T> for Lock<T> {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: ...which requires evaluating trait selection obligation `Lock<alloc::sync::Arc<std::sync::mutex::Mutex<hashbrown::map::HashMap<usize, alloc::sync::Arc<(core::sync::atomic::AtomicUsize, core::sync::atomic::AtomicUsize, atomic_serial_waker::AtomicSerialWaker)>>>>>: Destruct<alloc::sync::Arc<std::sync::mutex::Mutex<hashbrown::map::HashMap<usize, alloc::sync::Arc<(core::sync::atomic::AtomicUsize, core::sync::atomic::AtomicUsize, atomic_serial_waker::AtomicSerialWaker)>>>>>`...
[INFO] [stdout]     = note: ...which again requires computing whether impls specialize one another, completing the cycle
[INFO] [stdout] note: cycle used when building specialization graph of trait `Destruct`
[INFO] [stdout]    --> src/lib.rs:332:1
[INFO] [stdout]     |
[INFO] [stdout] 332 | pub trait Destruct<T> {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0391`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tokio-lk` (lib) due to 2 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `tokio-lk` (lib test) due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "aced9a2a93810ed1aa2a2fe9d450a88fb34cff86a744de1e4fb206f372d46b8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aced9a2a93810ed1aa2a2fe9d450a88fb34cff86a744de1e4fb206f372d46b8e", kill_on_drop: false }`
[INFO] [stdout] aced9a2a93810ed1aa2a2fe9d450a88fb34cff86a744de1e4fb206f372d46b8e