[INFO] fetching crate apool 0.1.3...
[INFO] checking apool-0.1.3 against try#8ea250bdb76176ecb0225baa34aa634b024ae0e2 for pr-101692
[INFO] extracting crate apool 0.1.3 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate apool 0.1.3 on toolchain 8ea250bdb76176ecb0225baa34aa634b024ae0e2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8ea250bdb76176ecb0225baa34aa634b024ae0e2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate apool 0.1.3
[INFO] finished tweaking crates.io crate apool 0.1.3
[INFO] tweaked toml for crates.io crate apool 0.1.3 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8ea250bdb76176ecb0225baa34aa634b024ae0e2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8ea250bdb76176ecb0225baa34aa634b024ae0e2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+8ea250bdb76176ecb0225baa34aa634b024ae0e2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 234a42aec101923a82dbe379d4187e473cccbd17169c547055fc9c003ce3cda8
[INFO] running `Command { std: "docker" "start" "-a" "234a42aec101923a82dbe379d4187e473cccbd17169c547055fc9c003ce3cda8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "234a42aec101923a82dbe379d4187e473cccbd17169c547055fc9c003ce3cda8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "234a42aec101923a82dbe379d4187e473cccbd17169c547055fc9c003ce3cda8", kill_on_drop: false }`
[INFO] [stdout] 234a42aec101923a82dbe379d4187e473cccbd17169c547055fc9c003ce3cda8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+8ea250bdb76176ecb0225baa34aa634b024ae0e2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 77a6a0173d03a81049a6cc86bb55a1c9ff835561e57a3d4caee1e2702136558b
[INFO] running `Command { std: "docker" "start" "-a" "77a6a0173d03a81049a6cc86bb55a1c9ff835561e57a3d4caee1e2702136558b", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking once_cell v1.14.0
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]     Checking smallvec v1.9.0
[INFO] [stderr]    Compiling tokio v1.21.1
[INFO] [stderr]     Checking apool v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0391]: cycle detected when type-checking `<impl at src/lib.rs:149:1: 149:73>::drop`
[INFO] [stdout]    --> src/lib.rs:150:5
[INFO] [stdout]     |
[INFO] [stdout] 150 |     fn drop(&mut self) {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: ...which requires generator glue MIR for `<impl at src/lib.rs:149:1: 149:73>::drop::{closure#0}`...
[INFO] [stdout]    --> src/lib.rs:155:60
[INFO] [stdout]     |
[INFO] [stdout] 155 |           tokio::runtime::Handle::current().spawn(async move {
[INFO] [stdout]     |  ____________________________________________________________^
[INFO] [stdout] 156 | |             let mut llock = mutex.lock().await;
[INFO] [stdout] 157 | |             let index = (0usize..)
[INFO] [stdout] 158 | |                 .zip(llock.iter())
[INFO] [stdout] ...   |
[INFO] [stdout] 164 | |             drop(permit);
[INFO] [stdout] 165 | |         });
[INFO] [stdout]     | |_________^
[INFO] [stdout] note: ...which requires elaborating drops for `<impl at src/lib.rs:149:1: 149:73>::drop::{closure#0}`...
[INFO] [stdout]    --> src/lib.rs:155:60
[INFO] [stdout]     |
[INFO] [stdout] 155 |           tokio::runtime::Handle::current().spawn(async move {
[INFO] [stdout]     |  ____________________________________________________________^
[INFO] [stdout] 156 | |             let mut llock = mutex.lock().await;
[INFO] [stdout] 157 | |             let index = (0usize..)
[INFO] [stdout] 158 | |                 .zip(llock.iter())
[INFO] [stdout] ...   |
[INFO] [stdout] 164 | |             drop(permit);
[INFO] [stdout] 165 | |         });
[INFO] [stdout]     | |_________^
[INFO] [stdout] note: ...which requires borrow-checking `<impl at src/lib.rs:149:1: 149:73>::drop::{closure#0}`...
[INFO] [stdout]    --> src/lib.rs:155:60
[INFO] [stdout]     |
[INFO] [stdout] 155 |           tokio::runtime::Handle::current().spawn(async move {
[INFO] [stdout]     |  ____________________________________________________________^
[INFO] [stdout] 156 | |             let mut llock = mutex.lock().await;
[INFO] [stdout] 157 | |             let index = (0usize..)
[INFO] [stdout] 158 | |                 .zip(llock.iter())
[INFO] [stdout] ...   |
[INFO] [stdout] 164 | |             drop(permit);
[INFO] [stdout] 165 | |         });
[INFO] [stdout]     | |_________^
[INFO] [stdout] note: ...which requires processing `<impl at src/lib.rs:149:1: 149:73>::drop::{closure#0}`...
[INFO] [stdout]    --> src/lib.rs:155:60
[INFO] [stdout]     |
[INFO] [stdout] 155 |           tokio::runtime::Handle::current().spawn(async move {
[INFO] [stdout]     |  ____________________________________________________________^
[INFO] [stdout] 156 | |             let mut llock = mutex.lock().await;
[INFO] [stdout] 157 | |             let index = (0usize..)
[INFO] [stdout] 158 | |                 .zip(llock.iter())
[INFO] [stdout] ...   |
[INFO] [stdout] 164 | |             drop(permit);
[INFO] [stdout] 165 | |         });
[INFO] [stdout]     | |_________^
[INFO] [stdout] note: ...which requires processing MIR for `<impl at src/lib.rs:149:1: 149:73>::drop::{closure#0}`...
[INFO] [stdout]    --> src/lib.rs:155:60
[INFO] [stdout]     |
[INFO] [stdout] 155 |           tokio::runtime::Handle::current().spawn(async move {
[INFO] [stdout]     |  ____________________________________________________________^
[INFO] [stdout] 156 | |             let mut llock = mutex.lock().await;
[INFO] [stdout] 157 | |             let index = (0usize..)
[INFO] [stdout] 158 | |                 .zip(llock.iter())
[INFO] [stdout] ...   |
[INFO] [stdout] 164 | |             drop(permit);
[INFO] [stdout] 165 | |         });
[INFO] [stdout]     | |_________^
[INFO] [stdout] note: ...which requires unsafety-checking `<impl at src/lib.rs:149:1: 149:73>::drop::{closure#0}`...
[INFO] [stdout]    --> src/lib.rs:155:60
[INFO] [stdout]     |
[INFO] [stdout] 155 |           tokio::runtime::Handle::current().spawn(async move {
[INFO] [stdout]     |  ____________________________________________________________^
[INFO] [stdout] 156 | |             let mut llock = mutex.lock().await;
[INFO] [stdout] 157 | |             let index = (0usize..)
[INFO] [stdout] 158 | |                 .zip(llock.iter())
[INFO] [stdout] ...   |
[INFO] [stdout] 164 | |             drop(permit);
[INFO] [stdout] 165 | |         });
[INFO] [stdout]     | |_________^
[INFO] [stdout] note: ...which requires building MIR for `<impl at src/lib.rs:149:1: 149:73>::drop::{closure#0}`...
[INFO] [stdout]    --> src/lib.rs:155:60
[INFO] [stdout]     |
[INFO] [stdout] 155 |           tokio::runtime::Handle::current().spawn(async move {
[INFO] [stdout]     |  ____________________________________________________________^
[INFO] [stdout] 156 | |             let mut llock = mutex.lock().await;
[INFO] [stdout] 157 | |             let index = (0usize..)
[INFO] [stdout] 158 | |                 .zip(llock.iter())
[INFO] [stdout] ...   |
[INFO] [stdout] 164 | |             drop(permit);
[INFO] [stdout] 165 | |         });
[INFO] [stdout]     | |_________^
[INFO] [stdout] note: ...which requires type-checking `<impl at src/lib.rs:149:1: 149:73>::drop::{closure#0}`...
[INFO] [stdout]    --> src/lib.rs:155:60
[INFO] [stdout]     |
[INFO] [stdout] 155 |           tokio::runtime::Handle::current().spawn(async move {
[INFO] [stdout]     |  ____________________________________________________________^
[INFO] [stdout] 156 | |             let mut llock = mutex.lock().await;
[INFO] [stdout] 157 | |             let index = (0usize..)
[INFO] [stdout] 158 | |                 .zip(llock.iter())
[INFO] [stdout] ...   |
[INFO] [stdout] 164 | |             drop(permit);
[INFO] [stdout] 165 | |         });
[INFO] [stdout]     | |_________^
[INFO] [stdout]     = note: ...which again requires type-checking `<impl at src/lib.rs:149:1: 149:73>::drop`, completing the cycle
[INFO] [stdout]     = note: cycle used when type-checking all item bodies
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[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 type-checking `<impl at src/lib.rs:149:1: 149:73>::drop`
[INFO] [stdout]    --> src/lib.rs:150:5
[INFO] [stdout]     |
[INFO] [stdout] 150 |     fn drop(&mut self) {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: ...which requires generator glue MIR for `<impl at src/lib.rs:149:1: 149:73>::drop::{closure#0}`...
[INFO] [stdout]    --> src/lib.rs:155:60
[INFO] [stdout]     |
[INFO] [stdout] 155 |           tokio::runtime::Handle::current().spawn(async move {
[INFO] [stdout]     |  ____________________________________________________________^
[INFO] [stdout] 156 | |             let mut llock = mutex.lock().await;
[INFO] [stdout] 157 | |             let index = (0usize..)
[INFO] [stdout] 158 | |                 .zip(llock.iter())
[INFO] [stdout] ...   |
[INFO] [stdout] 164 | |             drop(permit);
[INFO] [stdout] 165 | |         });
[INFO] [stdout]     | |_________^
[INFO] [stdout] note: ...which requires elaborating drops for `<impl at src/lib.rs:149:1: 149:73>::drop::{closure#0}`...
[INFO] [stdout]    --> src/lib.rs:155:60
[INFO] [stdout]     |
[INFO] [stdout] 155 |           tokio::runtime::Handle::current().spawn(async move {
[INFO] [stdout]     |  ____________________________________________________________^
[INFO] [stdout] 156 | |             let mut llock = mutex.lock().await;
[INFO] [stdout] 157 | |             let index = (0usize..)
[INFO] [stdout] 158 | |                 .zip(llock.iter())
[INFO] [stdout] ...   |
[INFO] [stdout] 164 | |             drop(permit);
[INFO] [stdout] 165 | |         });
[INFO] [stdout]     | |_________^
[INFO] [stdout] note: ...which requires borrow-checking `<impl at src/lib.rs:149:1: 149:73>::drop::{closure#0}`...
[INFO] [stdout]    --> src/lib.rs:155:60
[INFO] [stdout]     |
[INFO] [stdout] 155 |           tokio::runtime::Handle::current().spawn(async move {
[INFO] [stdout]     |  ____________________________________________________________^
[INFO] [stdout] 156 | |             let mut llock = mutex.lock().await;
[INFO] [stdout] 157 | |             let index = (0usize..)
[INFO] [stdout] 158 | |                 .zip(llock.iter())
[INFO] [stdout] ...   |
[INFO] [stdout] 164 | |             drop(permit);
[INFO] [stdout] 165 | |         });
[INFO] [stdout]     | |_________^
[INFO] [stdout] note: ...which requires processing `<impl at src/lib.rs:149:1: 149:73>::drop::{closure#0}`...
[INFO] [stdout]    --> src/lib.rs:155:60
[INFO] [stdout]     |
[INFO] [stdout] 155 |           tokio::runtime::Handle::current().spawn(async move {
[INFO] [stdout]     |  ____________________________________________________________^
[INFO] [stdout] 156 | |             let mut llock = mutex.lock().await;
[INFO] [stdout] 157 | |             let index = (0usize..)
[INFO] [stdout] 158 | |                 .zip(llock.iter())
[INFO] [stdout] ...   |
[INFO] [stdout] 164 | |             drop(permit);
[INFO] [stdout] 165 | |         });
[INFO] [stdout]     | |_________^
[INFO] [stdout] note: ...which requires processing MIR for `<impl at src/lib.rs:149:1: 149:73>::drop::{closure#0}`...
[INFO] [stdout]    --> src/lib.rs:155:60
[INFO] [stdout]     |
[INFO] [stdout] 155 |           tokio::runtime::Handle::current().spawn(async move {
[INFO] [stdout]     |  ____________________________________________________________^
[INFO] [stdout] 156 | |             let mut llock = mutex.lock().await;
[INFO] [stdout] 157 | |             let index = (0usize..)
[INFO] [stdout] 158 | |                 .zip(llock.iter())
[INFO] [stdout] ...   |
[INFO] [stdout] 164 | |             drop(permit);
[INFO] [stdout] 165 | |         });
[INFO] [stdout]     | |_________^
[INFO] [stdout] note: ...which requires unsafety-checking `<impl at src/lib.rs:149:1: 149:73>::drop::{closure#0}`...
[INFO] [stdout]    --> src/lib.rs:155:60
[INFO] [stdout]     |
[INFO] [stdout] 155 |           tokio::runtime::Handle::current().spawn(async move {
[INFO] [stdout]     |  ____________________________________________________________^
[INFO] [stdout] 156 | |             let mut llock = mutex.lock().await;
[INFO] [stdout] 157 | |             let index = (0usize..)
[INFO] [stdout] 158 | |                 .zip(llock.iter())
[INFO] [stdout] ...   |
[INFO] [stdout] 164 | |             drop(permit);
[INFO] [stdout] 165 | |         });
[INFO] [stdout]     | |_________^
[INFO] [stdout] note: ...which requires building MIR for `<impl at src/lib.rs:149:1: 149:73>::drop::{closure#0}`...
[INFO] [stdout]    --> src/lib.rs:155:60
[INFO] [stdout]     |
[INFO] [stdout] 155 |           tokio::runtime::Handle::current().spawn(async move {
[INFO] [stdout]     |  ____________________________________________________________^
[INFO] [stdout] 156 | |             let mut llock = mutex.lock().await;
[INFO] [stdout] 157 | |             let index = (0usize..)
[INFO] [stdout] 158 | |                 .zip(llock.iter())
[INFO] [stdout] ...   |
[INFO] [stdout] 164 | |             drop(permit);
[INFO] [stdout] 165 | |         });
[INFO] [stdout]     | |_________^
[INFO] [stdout] note: ...which requires type-checking `<impl at src/lib.rs:149:1: 149:73>::drop::{closure#0}`...
[INFO] [stdout]    --> src/lib.rs:155:60
[INFO] [stdout]     |
[INFO] [stdout] 155 |           tokio::runtime::Handle::current().spawn(async move {
[INFO] [stdout]     |  ____________________________________________________________^
[INFO] [stdout] 156 | |             let mut llock = mutex.lock().await;
[INFO] [stdout] 157 | |             let index = (0usize..)
[INFO] [stdout] 158 | |                 .zip(llock.iter())
[INFO] [stdout] ...   |
[INFO] [stdout] 164 | |             drop(permit);
[INFO] [stdout] 165 | |         });
[INFO] [stdout]     | |_________^
[INFO] [stdout]     = note: ...which again requires type-checking `<impl at src/lib.rs:149:1: 149:73>::drop`, completing the cycle
[INFO] [stdout]     = note: cycle used when type-checking all item bodies
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0391`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `apool` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `apool` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "77a6a0173d03a81049a6cc86bb55a1c9ff835561e57a3d4caee1e2702136558b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77a6a0173d03a81049a6cc86bb55a1c9ff835561e57a3d4caee1e2702136558b", kill_on_drop: false }`
[INFO] [stdout] 77a6a0173d03a81049a6cc86bb55a1c9ff835561e57a3d4caee1e2702136558b