[INFO] fetching crate nails-fork 0.13.0...
[INFO] checking nails-fork-0.13.0 against try#8ea250bdb76176ecb0225baa34aa634b024ae0e2 for pr-101692
[INFO] extracting crate nails-fork 0.13.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate nails-fork 0.13.0 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 nails-fork 0.13.0
[INFO] finished tweaking crates.io crate nails-fork 0.13.0
[INFO] tweaked toml for crates.io crate nails-fork 0.13.0 written to /workspace/builds/worker-0/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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] ffacaa903f40216a70a26b0a44a3c55b261c6be41be324a965ae4d37ce4c2f3b
[INFO] running `Command { std: "docker" "start" "-a" "ffacaa903f40216a70a26b0a44a3c55b261c6be41be324a965ae4d37ce4c2f3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ffacaa903f40216a70a26b0a44a3c55b261c6be41be324a965ae4d37ce4c2f3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffacaa903f40216a70a26b0a44a3c55b261c6be41be324a965ae4d37ce4c2f3b", kill_on_drop: false }`
[INFO] [stdout] ffacaa903f40216a70a26b0a44a3c55b261c6be41be324a965ae4d37ce4c2f3b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 585c0be4fa8b3e001b18cd709bc37b52afa671888efee3c1a29b62559630d0f8
[INFO] running `Command { std: "docker" "start" "-a" "585c0be4fa8b3e001b18cd709bc37b52afa671888efee3c1a29b62559630d0f8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling unicode-ident v1.0.4
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling futures-core v0.3.24
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]     Checking futures-sink v0.3.24
[INFO] [stderr]    Compiling futures-channel v0.3.24
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling futures-task v0.3.24
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling futures-util v0.3.24
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking futures-io v0.3.24
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking bytes v1.2.1
[INFO] [stderr]     Checking once_cell v1.14.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]    Compiling tokio v1.21.1
[INFO] [stderr]     Checking mio v0.8.4
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking socket2 v0.4.7
[INFO] [stderr]    Compiling futures-macro v0.3.24
[INFO] [stderr]    Compiling tokio-macros v1.8.0
[INFO] [stderr]     Checking tokio-util v0.6.10
[INFO] [stderr]     Checking futures-executor v0.3.24
[INFO] [stderr]     Checking futures v0.3.24
[INFO] [stderr]     Checking nails v0.13.0
[INFO] [stdout] error[E0391]: cycle detected when type-checking `client::execute`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nails-0.13.0/src/client.rs:113:1
[INFO] [stdout]     |
[INFO] [stdout] 113 | / async fn execute<R, W>(
[INFO] [stdout] 114 | |     config: Config,
[INFO] [stdout] 115 | |     read: R,
[INFO] [stdout] 116 | |     write: W,
[INFO] [stdout] ...   |
[INFO] [stdout] 121 | |     R: AsyncRead + Debug + Unpin + Send + 'static,
[INFO] [stdout] 122 | |     W: AsyncWrite + Debug + Unpin + Send + 'static,
[INFO] [stdout]     | |___________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout] note: ...which requires generator glue MIR for `client::execute::{closure#0}::{closure#2}`...
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nails-0.13.0/src/client.rs:144:20
[INFO] [stdout]     |
[INFO] [stdout] 144 |           async move {
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 145 | |             // Take and drop the write half of the connection (if it has not already been dropped).
[INFO] [stdout] 146 | |             let _ = server_write.lock().await.take();
[INFO] [stdout] 147 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout] note: ...which requires elaborating drops for `client::execute::{closure#0}::{closure#2}`...
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nails-0.13.0/src/client.rs:144:20
[INFO] [stdout]     |
[INFO] [stdout] 144 |           async move {
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 145 | |             // Take and drop the write half of the connection (if it has not already been dropped).
[INFO] [stdout] 146 | |             let _ = server_write.lock().await.take();
[INFO] [stdout] 147 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout] note: ...which requires borrow-checking `client::execute::{closure#0}::{closure#2}`...
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nails-0.13.0/src/client.rs:144:20
[INFO] [stdout]     |
[INFO] [stdout] 144 |           async move {
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 145 | |             // Take and drop the write half of the connection (if it has not already been dropped).
[INFO] [stdout] 146 | |             let _ = server_write.lock().await.take();
[INFO] [stdout] 147 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout] note: ...which requires processing `client::execute::{closure#0}::{closure#2}`...
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nails-0.13.0/src/client.rs:144:20
[INFO] [stdout]     |
[INFO] [stdout] 144 |           async move {
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 145 | |             // Take and drop the write half of the connection (if it has not already been dropped).
[INFO] [stdout] 146 | |             let _ = server_write.lock().await.take();
[INFO] [stdout] 147 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout] note: ...which requires processing MIR for `client::execute::{closure#0}::{closure#2}`...
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nails-0.13.0/src/client.rs:144:20
[INFO] [stdout]     |
[INFO] [stdout] 144 |           async move {
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 145 | |             // Take and drop the write half of the connection (if it has not already been dropped).
[INFO] [stdout] 146 | |             let _ = server_write.lock().await.take();
[INFO] [stdout] 147 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout] note: ...which requires unsafety-checking `client::execute::{closure#0}::{closure#2}`...
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nails-0.13.0/src/client.rs:144:20
[INFO] [stdout]     |
[INFO] [stdout] 144 |           async move {
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 145 | |             // Take and drop the write half of the connection (if it has not already been dropped).
[INFO] [stdout] 146 | |             let _ = server_write.lock().await.take();
[INFO] [stdout] 147 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout] note: ...which requires building MIR for `client::execute::{closure#0}::{closure#2}`...
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nails-0.13.0/src/client.rs:144:20
[INFO] [stdout]     |
[INFO] [stdout] 144 |           async move {
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 145 | |             // Take and drop the write half of the connection (if it has not already been dropped).
[INFO] [stdout] 146 | |             let _ = server_write.lock().await.take();
[INFO] [stdout] 147 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout] note: ...which requires type-checking `client::execute::{closure#0}::{closure#2}`...
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nails-0.13.0/src/client.rs:144:20
[INFO] [stdout]     |
[INFO] [stdout] 144 |           async move {
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 145 | |             // Take and drop the write half of the connection (if it has not already been dropped).
[INFO] [stdout] 146 | |             let _ = server_write.lock().await.take();
[INFO] [stdout] 147 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     = note: ...which again requires type-checking `client::execute`, completing the cycle
[INFO] [stdout] note: cycle used when building MIR for `client::execute`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nails-0.13.0/src/client.rs:113:1
[INFO] [stdout]     |
[INFO] [stdout] 113 | / async fn execute<R, W>(
[INFO] [stdout] 114 | |     config: Config,
[INFO] [stdout] 115 | |     read: R,
[INFO] [stdout] 116 | |     write: W,
[INFO] [stdout] ...   |
[INFO] [stdout] 121 | |     R: AsyncRead + Debug + Unpin + Send + 'static,
[INFO] [stdout] 122 | |     W: AsyncWrite + Debug + Unpin + Send + 'static,
[INFO] [stdout]     | |___________________________________________________^
[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 `nails` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "585c0be4fa8b3e001b18cd709bc37b52afa671888efee3c1a29b62559630d0f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "585c0be4fa8b3e001b18cd709bc37b52afa671888efee3c1a29b62559630d0f8", kill_on_drop: false }`
[INFO] [stdout] 585c0be4fa8b3e001b18cd709bc37b52afa671888efee3c1a29b62559630d0f8