[INFO] fetching crate async_as_symmetric_coroutines 0.0.1...
[INFO] checking async_as_symmetric_coroutines-0.0.1 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate async_as_symmetric_coroutines 0.0.1 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate async_as_symmetric_coroutines 0.0.1
[INFO] finished tweaking crates.io crate async_as_symmetric_coroutines 0.0.1
[INFO] tweaked toml for crates.io crate async_as_symmetric_coroutines 0.0.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate async_as_symmetric_coroutines 0.0.1 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate async_as_symmetric_coroutines 0.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a4de1bbc242f340e8a748430c44225d9ead2bb857c614818143be0cb394e0506
[INFO] running `Command { std: "docker" "start" "-a" "a4de1bbc242f340e8a748430c44225d9ead2bb857c614818143be0cb394e0506", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a4de1bbc242f340e8a748430c44225d9ead2bb857c614818143be0cb394e0506", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4de1bbc242f340e8a748430c44225d9ead2bb857c614818143be0cb394e0506", kill_on_drop: false }`
[INFO] [stdout] a4de1bbc242f340e8a748430c44225d9ead2bb857c614818143be0cb394e0506
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a9bd9c9fdbdf089e7d4d813953f55100f301a434adfccf02d6485ce0f04afabd
[INFO] running `Command { std: "docker" "start" "-a" "a9bd9c9fdbdf089e7d4d813953f55100f301a434adfccf02d6485ce0f04afabd", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.3.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]     Checking futures-sink v0.3.30
[INFO] [stderr]     Checking futures-task v0.3.30
[INFO] [stderr]     Checking pollster v0.3.0
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]     Checking flume v0.11.0
[INFO] [stderr]    Compiling syn v2.0.68
[INFO] [stderr]     Checking async_as_symmetric_coroutines v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stdout] warning: missing documentation for the crate
[INFO] [stdout]    --> tests/multi_threads.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout] 1   | / #![cfg(test)] // Satisfy the `clippy::tests_outside_test_module` lint.
[INFO] [stdout] 2   | | #![cfg_attr(test, allow(unused_crate_dependencies))]
[INFO] [stdout] 3   | | #![allow(
[INFO] [stdout] 4   | |     clippy::arithmetic_side_effects,
[INFO] [stdout] ...   |
[INFO] [stdout] 150 | |     assert_eq!(ra, Ok(139));
[INFO] [stdout] 151 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-W missing-docs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.35s
[INFO] running `Command { std: "docker" "inspect" "a9bd9c9fdbdf089e7d4d813953f55100f301a434adfccf02d6485ce0f04afabd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9bd9c9fdbdf089e7d4d813953f55100f301a434adfccf02d6485ce0f04afabd", kill_on_drop: false }`
[INFO] [stdout] a9bd9c9fdbdf089e7d4d813953f55100f301a434adfccf02d6485ce0f04afabd