[INFO] cloning repository https://github.com/post-rex/apool
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/post-rex/apool" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpost-rex%2Fapool", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpost-rex%2Fapool'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e5dbe282dba3c696f2b8458683d6187b5d825160
[INFO] checking post-rex/apool against try#8ea250bdb76176ecb0225baa34aa634b024ae0e2 for pr-101692
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpost-rex%2Fapool" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/post-rex/apool 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 git repo https://github.com/post-rex/apool
[INFO] finished tweaking git repo https://github.com/post-rex/apool
[INFO] tweaked toml for git repo https://github.com/post-rex/apool written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/post-rex/apool already has a lockfile, it will not be regenerated
[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-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e92e462e59ac3446a933540fd361ddeb5362c86f92d432d6a560a917a465022e" "/opt/rustwide/cargo-home/bin/cargo" "+8ea250bdb76176ecb0225baa34aa634b024ae0e2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 00dd086743b7d2c866d9ffe75d3e6955278a04a0c681d6fc5b9b0b262c177552
[INFO] running `Command { std: "docker" "start" "-a" "00dd086743b7d2c866d9ffe75d3e6955278a04a0c681d6fc5b9b0b262c177552", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "00dd086743b7d2c866d9ffe75d3e6955278a04a0c681d6fc5b9b0b262c177552", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00dd086743b7d2c866d9ffe75d3e6955278a04a0c681d6fc5b9b0b262c177552", kill_on_drop: false }`
[INFO] [stdout] 00dd086743b7d2c866d9ffe75d3e6955278a04a0c681d6fc5b9b0b262c177552
[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" "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:e92e462e59ac3446a933540fd361ddeb5362c86f92d432d6a560a917a465022e" "/opt/rustwide/cargo-home/bin/cargo" "+8ea250bdb76176ecb0225baa34aa634b024ae0e2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] da793a8dc59cb4ad55720337c9c5740893ed6b6477143afb029d55eb6fef95b9
[INFO] running `Command { std: "docker" "start" "-a" "da793a8dc59cb4ad55720337c9c5740893ed6b6477143afb029d55eb6fef95b9", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]    Compiling tokio v1.10.0
[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] [stderr] error: could not compile `apool` due to 2 previous errors
[INFO] [stdout] For more information about this error, try `rustc --explain E0391`.
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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] running `Command { std: "docker" "inspect" "da793a8dc59cb4ad55720337c9c5740893ed6b6477143afb029d55eb6fef95b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da793a8dc59cb4ad55720337c9c5740893ed6b6477143afb029d55eb6fef95b9", kill_on_drop: false }`
[INFO] [stdout] da793a8dc59cb4ad55720337c9c5740893ed6b6477143afb029d55eb6fef95b9