[INFO] fetching crate tokio-tasker 1.2.0...
[INFO] checking tokio-tasker-1.2.0 against try#8ea250bdb76176ecb0225baa34aa634b024ae0e2 for pr-101692
[INFO] extracting crate tokio-tasker 1.2.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate tokio-tasker 1.2.0 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 tokio-tasker 1.2.0
[INFO] finished tweaking crates.io crate tokio-tasker 1.2.0
[INFO] tweaked toml for crates.io crate tokio-tasker 1.2.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate tokio-tasker 1.2.0 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] [stderr]     Blocking waiting for file lock on package cache
[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] 7d4fad8abd580466b8f27ee34711d4efc55d331a934778777fe81d4d166022a9
[INFO] running `Command { std: "docker" "start" "-a" "7d4fad8abd580466b8f27ee34711d4efc55d331a934778777fe81d4d166022a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7d4fad8abd580466b8f27ee34711d4efc55d331a934778777fe81d4d166022a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d4fad8abd580466b8f27ee34711d4efc55d331a934778777fe81d4d166022a9", kill_on_drop: false }`
[INFO] [stdout] 7d4fad8abd580466b8f27ee34711d4efc55d331a934778777fe81d4d166022a9
[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] 212d56b317cf1c88fca4f8c5326c53630612a53dce6ae6f65087d19d3caa43ef
[INFO] running `Command { std: "docker" "start" "-a" "212d56b317cf1c88fca4f8c5326c53630612a53dce6ae6f65087d19d3caa43ef", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.107
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]     Checking smallvec v1.7.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling futures-core v0.3.17
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling parking_lot_core v0.9.1
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]    Compiling futures-task v0.3.17
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]    Compiling eyre v0.6.5
[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]     Checking indenter v0.3.3
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking lock_api v0.4.6
[INFO] [stderr]    Compiling futures-macro v0.3.17
[INFO] [stderr]    Compiling tokio v1.13.0
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking nix v0.23.0
[INFO] [stderr]     Checking parking_lot v0.12.0
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]    Compiling tokio-macros v1.5.1
[INFO] [stderr]     Checking ctrlc v3.2.1
[INFO] [stderr]     Checking tokio-stream v0.1.8
[INFO] [stderr]     Checking tokio-tasker v1.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0391]: cycle detected when type-checking `main`
[INFO] [stdout]   --> examples/echo.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     tasker.spawn(async move {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: ...which requires evaluating trait selection obligation `[generator interior@examples/echo.rs:35:29: 54:6]: core::marker::Send`...
[INFO] [stdout] note: ...which requires generator glue MIR for `main::{closure#0}::{closure#0}`...
[INFO] [stdout]   --> examples/echo.rs:35:29
[INFO] [stdout]    |
[INFO] [stdout] 35 |       tasker.spawn(async move {
[INFO] [stdout]    |  _____________________________^
[INFO] [stdout] 36 | |         let mut listener = TcpListenerStream::new(listener)
[INFO] [stdout] 37 | |             .take_until(tasker2.stopper())
[INFO] [stdout] 38 | |             .enumerate();
[INFO] [stdout] ...  |
[INFO] [stdout] 53 | |         tasker2.finish();
[INFO] [stdout] 54 | |     });
[INFO] [stdout]    | |_____^
[INFO] [stdout] note: ...which requires elaborating drops for `main::{closure#0}::{closure#0}`...
[INFO] [stdout]   --> examples/echo.rs:35:29
[INFO] [stdout]    |
[INFO] [stdout] 35 |       tasker.spawn(async move {
[INFO] [stdout]    |  _____________________________^
[INFO] [stdout] 36 | |         let mut listener = TcpListenerStream::new(listener)
[INFO] [stdout] 37 | |             .take_until(tasker2.stopper())
[INFO] [stdout] 38 | |             .enumerate();
[INFO] [stdout] ...  |
[INFO] [stdout] 53 | |         tasker2.finish();
[INFO] [stdout] 54 | |     });
[INFO] [stdout]    | |_____^
[INFO] [stdout] note: ...which requires borrow-checking `main::{closure#0}::{closure#0}`...
[INFO] [stdout]   --> examples/echo.rs:35:29
[INFO] [stdout]    |
[INFO] [stdout] 35 |       tasker.spawn(async move {
[INFO] [stdout]    |  _____________________________^
[INFO] [stdout] 36 | |         let mut listener = TcpListenerStream::new(listener)
[INFO] [stdout] 37 | |             .take_until(tasker2.stopper())
[INFO] [stdout] 38 | |             .enumerate();
[INFO] [stdout] ...  |
[INFO] [stdout] 53 | |         tasker2.finish();
[INFO] [stdout] 54 | |     });
[INFO] [stdout]    | |_____^
[INFO] [stdout] note: ...which requires processing `main::{closure#0}::{closure#0}`...
[INFO] [stdout]   --> examples/echo.rs:35:29
[INFO] [stdout]    |
[INFO] [stdout] 35 |       tasker.spawn(async move {
[INFO] [stdout]    |  _____________________________^
[INFO] [stdout] 36 | |         let mut listener = TcpListenerStream::new(listener)
[INFO] [stdout] 37 | |             .take_until(tasker2.stopper())
[INFO] [stdout] 38 | |             .enumerate();
[INFO] [stdout] ...  |
[INFO] [stdout] 53 | |         tasker2.finish();
[INFO] [stdout] 54 | |     });
[INFO] [stdout]    | |_____^
[INFO] [stdout] note: ...which requires processing MIR for `main::{closure#0}::{closure#0}`...
[INFO] [stdout]   --> examples/echo.rs:35:29
[INFO] [stdout]    |
[INFO] [stdout] 35 |       tasker.spawn(async move {
[INFO] [stdout]    |  _____________________________^
[INFO] [stdout] 36 | |         let mut listener = TcpListenerStream::new(listener)
[INFO] [stdout] 37 | |             .take_until(tasker2.stopper())
[INFO] [stdout] 38 | |             .enumerate();
[INFO] [stdout] ...  |
[INFO] [stdout] 53 | |         tasker2.finish();
[INFO] [stdout] 54 | |     });
[INFO] [stdout]    | |_____^
[INFO] [stdout] note: ...which requires unsafety-checking `main::{closure#0}::{closure#0}`...
[INFO] [stdout]   --> examples/echo.rs:35:29
[INFO] [stdout]    |
[INFO] [stdout] 35 |       tasker.spawn(async move {
[INFO] [stdout]    |  _____________________________^
[INFO] [stdout] 36 | |         let mut listener = TcpListenerStream::new(listener)
[INFO] [stdout] 37 | |             .take_until(tasker2.stopper())
[INFO] [stdout] 38 | |             .enumerate();
[INFO] [stdout] ...  |
[INFO] [stdout] 53 | |         tasker2.finish();
[INFO] [stdout] 54 | |     });
[INFO] [stdout]    | |_____^
[INFO] [stdout] note: ...which requires building MIR for `main::{closure#0}::{closure#0}`...
[INFO] [stdout]   --> examples/echo.rs:35:29
[INFO] [stdout]    |
[INFO] [stdout] 35 |       tasker.spawn(async move {
[INFO] [stdout]    |  _____________________________^
[INFO] [stdout] 36 | |         let mut listener = TcpListenerStream::new(listener)
[INFO] [stdout] 37 | |             .take_until(tasker2.stopper())
[INFO] [stdout] 38 | |             .enumerate();
[INFO] [stdout] ...  |
[INFO] [stdout] 53 | |         tasker2.finish();
[INFO] [stdout] 54 | |     });
[INFO] [stdout]    | |_____^
[INFO] [stdout] note: ...which requires type-checking `main::{closure#0}::{closure#0}`...
[INFO] [stdout]   --> examples/echo.rs:35:29
[INFO] [stdout]    |
[INFO] [stdout] 35 |       tasker.spawn(async move {
[INFO] [stdout]    |  _____________________________^
[INFO] [stdout] 36 | |         let mut listener = TcpListenerStream::new(listener)
[INFO] [stdout] 37 | |             .take_until(tasker2.stopper())
[INFO] [stdout] 38 | |             .enumerate();
[INFO] [stdout] ...  |
[INFO] [stdout] 53 | |         tasker2.finish();
[INFO] [stdout] 54 | |     });
[INFO] [stdout]    | |_____^
[INFO] [stdout]    = note: ...which again requires type-checking `main`, 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 `tokio-tasker` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "212d56b317cf1c88fca4f8c5326c53630612a53dce6ae6f65087d19d3caa43ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "212d56b317cf1c88fca4f8c5326c53630612a53dce6ae6f65087d19d3caa43ef", kill_on_drop: false }`
[INFO] [stdout] 212d56b317cf1c88fca4f8c5326c53630612a53dce6ae6f65087d19d3caa43ef