[INFO] fetching crate async-spawner 2.1.0...
[INFO] testing async-spawner-2.1.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate async-spawner 2.1.0 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate async-spawner 2.1.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate async-spawner 2.1.0
[INFO] finished tweaking crates.io crate async-spawner 2.1.0
[INFO] tweaked toml for crates.io crate async-spawner 2.1.0 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dc3b8cf2306e1f538eb7e219b4a6b1c35b3fbb0bdcb27255fe698e85e28f50d7
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "dc3b8cf2306e1f538eb7e219b4a6b1c35b3fbb0bdcb27255fe698e85e28f50d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dc3b8cf2306e1f538eb7e219b4a6b1c35b3fbb0bdcb27255fe698e85e28f50d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc3b8cf2306e1f538eb7e219b4a6b1c35b3fbb0bdcb27255fe698e85e28f50d7", kill_on_drop: false }`
[INFO] [stdout] dc3b8cf2306e1f538eb7e219b4a6b1c35b3fbb0bdcb27255fe698e85e28f50d7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=warn" "-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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] bda31ebba372bdefdd97c2a2d56f29eaa92ea1dcccf6b31623b416f69636897a
[INFO] running `Command { std: "docker" "start" "-a" "bda31ebba372bdefdd97c2a2d56f29eaa92ea1dcccf6b31623b416f69636897a", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-task v0.3.8
[INFO] [stderr]    Compiling futures-util v0.3.8
[INFO] [stderr]    Compiling async-spawner v2.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.63s
[INFO] running `Command { std: "docker" "inspect" "bda31ebba372bdefdd97c2a2d56f29eaa92ea1dcccf6b31623b416f69636897a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bda31ebba372bdefdd97c2a2d56f29eaa92ea1dcccf6b31623b416f69636897a", kill_on_drop: false }`
[INFO] [stdout] bda31ebba372bdefdd97c2a2d56f29eaa92ea1dcccf6b31623b416f69636897a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=warn" "-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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a759f892d66d1368b4e7fe19fc268ad685de589d3390ee1fb6b45aaf8b605e2d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a759f892d66d1368b4e7fe19fc268ad685de589d3390ee1fb6b45aaf8b605e2d", kill_on_drop: false }`
[INFO] [stderr]    Compiling tokio v0.3.6
[INFO] [stderr]    Compiling futures-lite v1.11.3
[INFO] [stderr]    Compiling polling v2.0.2
[INFO] [stderr]    Compiling nb-connect v1.0.2
[INFO] [stderr]    Compiling signal-hook-registry v1.3.0
[INFO] [stderr]    Compiling tokio-macros v0.3.2
[INFO] [stderr]    Compiling signal-hook v0.1.17
[INFO] [stderr]    Compiling async-io v1.3.1
[INFO] [stderr]    Compiling async-executor v1.4.0
[INFO] [stderr]    Compiling blocking v1.0.2
[INFO] [stderr]    Compiling async-global-executor v1.4.3
[INFO] [stderr]    Compiling async-process v1.0.1
[INFO] [stderr]    Compiling async-std v1.8.0
[INFO] [stderr]    Compiling async-spawner v2.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 24.97s
[INFO] running `Command { std: "docker" "inspect" "a759f892d66d1368b4e7fe19fc268ad685de589d3390ee1fb6b45aaf8b605e2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a759f892d66d1368b4e7fe19fc268ad685de589d3390ee1fb6b45aaf8b605e2d", kill_on_drop: false }`
[INFO] [stdout] a759f892d66d1368b4e7fe19fc268ad685de589d3390ee1fb6b45aaf8b605e2d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=warn" "-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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] bb30fef1b6073ee1e69f4055f495a2ed255b3cbfcd35b3e344380f5d09cbac72
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "bb30fef1b6073ee1e69f4055f495a2ed255b3cbfcd35b3e344380f5d09cbac72", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/async_spawner-18ee093a346ec14e
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests async-spawner
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 3) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 16) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 3) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: could not find `async_std` in `async_spawner`
[INFO] [stdout]  --> src/lib.rs:6:20
[INFO] [stdout]   |
[INFO] [stdout] 5 |     async_spawner::async_std::register_executor();
[INFO] [stdout]   |                    ^^^^^^^^^ could not find `async_std` in `async_spawner`
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async fn` body must be known in this context
[INFO] [stdout]   --> src/lib.rs:7:42
[INFO] [stdout]    |
[INFO] [stdout] 6  |       let res = async_spawner::spawn(async {
[INFO] [stdout]    |  __________________________________________^
[INFO] [stdout] 7  | |         println!("executor agnostic spawning");
[INFO] [stdout] 8  | |         1
[INFO] [stdout] 9  | |     })
[INFO] [stdout]    | |_____^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async fn` body because of this `await`
[INFO] [stdout]   --> src/lib.rs:7:15
[INFO] [stdout]    |
[INFO] [stdout] 6  |       let res = async_spawner::spawn(async {
[INFO] [stdout]    |  _______________^
[INFO] [stdout] 7  | |         println!("executor agnostic spawning");
[INFO] [stdout] 8  | |         1
[INFO] [stdout] 9  | |     })
[INFO] [stdout] 10 | |     .await;
[INFO] [stdout]    | |__________^
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async fn` body must be known in this context
[INFO] [stdout]   --> src/lib.rs:7:36
[INFO] [stdout]    |
[INFO] [stdout] 6  |       let res = async_spawner::spawn(async {
[INFO] [stdout]    |  ____________________________________^
[INFO] [stdout] 7  | |         println!("executor agnostic spawning");
[INFO] [stdout] 8  | |         1
[INFO] [stdout] 9  | |     })
[INFO] [stdout]    | |_____^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async fn` body because of this `await`
[INFO] [stdout]   --> src/lib.rs:7:15
[INFO] [stdout]    |
[INFO] [stdout] 6  |       let res = async_spawner::spawn(async {
[INFO] [stdout]    |  _______________^
[INFO] [stdout] 7  | |         println!("executor agnostic spawning");
[INFO] [stdout] 8  | |         1
[INFO] [stdout] 9  | |     })
[INFO] [stdout] 10 | |     .await;
[INFO] [stdout]    | |__________^
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async fn` body must be known in this context
[INFO] [stdout]   --> src/lib.rs:7:15
[INFO] [stdout]    |
[INFO] [stdout] 6  |       let res = async_spawner::spawn(async {
[INFO] [stdout]    |  _______________^
[INFO] [stdout] 7  | |         println!("executor agnostic spawning");
[INFO] [stdout] 8  | |         1
[INFO] [stdout] 9  | |     })
[INFO] [stdout]    | |______^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async fn` body because of this `await`
[INFO] [stdout]   --> src/lib.rs:7:15
[INFO] [stdout]    |
[INFO] [stdout] 6  |       let res = async_spawner::spawn(async {
[INFO] [stdout]    |  _______________^
[INFO] [stdout] 7  | |         println!("executor agnostic spawning");
[INFO] [stdout] 8  | |         1
[INFO] [stdout] 9  | |     })
[INFO] [stdout] 10 | |     .await;
[INFO] [stdout]    | |__________^
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async fn` body must be known in this context
[INFO] [stdout]   --> src/lib.rs:7:15
[INFO] [stdout]    |
[INFO] [stdout] 6  |       let res = async_spawner::spawn(async {
[INFO] [stdout]    |  _______________^
[INFO] [stdout] 7  | |         println!("executor agnostic spawning");
[INFO] [stdout] 8  | |         1
[INFO] [stdout] 9  | |     })
[INFO] [stdout] 10 | |     .await;
[INFO] [stdout]    | |__________^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async fn` body because of this `await`
[INFO] [stdout]   --> src/lib.rs:7:15
[INFO] [stdout]    |
[INFO] [stdout] 6  |       let res = async_spawner::spawn(async {
[INFO] [stdout]    |  _______________^
[INFO] [stdout] 7  | |         println!("executor agnostic spawning");
[INFO] [stdout] 8  | |         1
[INFO] [stdout] 9  | |     })
[INFO] [stdout] 10 | |     .await;
[INFO] [stdout]    | |__________^
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0433, E0698.
[INFO] [stdout] For more information about an error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - (line 16) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: could not find `tokio` in `async_spawner`
[INFO] [stdout]  --> src/lib.rs:19:20
[INFO] [stdout]   |
[INFO] [stdout] 5 |     async_spawner::tokio::register_executor();
[INFO] [stdout]   |                    ^^^^^ could not find `tokio` in `async_spawner`
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> src/lib.rs:20:42
[INFO] [stdout]    |
[INFO] [stdout] 6  |       let res = async_spawner::spawn(async {
[INFO] [stdout]    |  __________________________________________^
[INFO] [stdout] 7  | |         println!("executor agnostic spawning");
[INFO] [stdout] 8  | |         1
[INFO] [stdout] 9  | |     })
[INFO] [stdout]    | |_____^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> src/lib.rs:20:15
[INFO] [stdout]    |
[INFO] [stdout] 6  |       let res = async_spawner::spawn(async {
[INFO] [stdout]    |  _______________^
[INFO] [stdout] 7  | |         println!("executor agnostic spawning");
[INFO] [stdout] 8  | |         1
[INFO] [stdout] 9  | |     })
[INFO] [stdout] 10 | |     .await;
[INFO] [stdout]    | |__________^
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> src/lib.rs:20:36
[INFO] [stdout]    |
[INFO] [stdout] 6  |       let res = async_spawner::spawn(async {
[INFO] [stdout]    |  ____________________________________^
[INFO] [stdout] 7  | |         println!("executor agnostic spawning");
[INFO] [stdout] 8  | |         1
[INFO] [stdout] 9  | |     })
[INFO] [stdout]    | |_____^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> src/lib.rs:20:15
[INFO] [stdout]    |
[INFO] [stdout] 6  |       let res = async_spawner::spawn(async {
[INFO] [stdout]    |  _______________^
[INFO] [stdout] 7  | |         println!("executor agnostic spawning");
[INFO] [stdout] 8  | |         1
[INFO] [stdout] 9  | |     })
[INFO] [stdout] 10 | |     .await;
[INFO] [stdout]    | |__________^
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> src/lib.rs:20:15
[INFO] [stdout]    |
[INFO] [stdout] 6  |       let res = async_spawner::spawn(async {
[INFO] [stdout]    |  _______________^
[INFO] [stdout] 7  | |         println!("executor agnostic spawning");
[INFO] [stdout] 8  | |         1
[INFO] [stdout] 9  | |     })
[INFO] [stdout]    | |______^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> src/lib.rs:20:15
[INFO] [stdout]    |
[INFO] [stdout] 6  |       let res = async_spawner::spawn(async {
[INFO] [stdout]    |  _______________^
[INFO] [stdout] 7  | |         println!("executor agnostic spawning");
[INFO] [stdout] 8  | |         1
[INFO] [stdout] 9  | |     })
[INFO] [stdout] 10 | |     .await;
[INFO] [stdout]    | |__________^
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> src/lib.rs:20:15
[INFO] [stdout]    |
[INFO] [stdout] 6  |       let res = async_spawner::spawn(async {
[INFO] [stdout]    |  _______________^
[INFO] [stdout] 7  | |         println!("executor agnostic spawning");
[INFO] [stdout] 8  | |         1
[INFO] [stdout] 9  | |     })
[INFO] [stdout] 10 | |     .await;
[INFO] [stdout]    | |__________^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> src/lib.rs:20:15
[INFO] [stdout]    |
[INFO] [stdout] 6  |       let res = async_spawner::spawn(async {
[INFO] [stdout]    |  _______________^
[INFO] [stdout] 7  | |         println!("executor agnostic spawning");
[INFO] [stdout] 8  | |         1
[INFO] [stdout] 9  | |     })
[INFO] [stdout] 10 | |     .await;
[INFO] [stdout]    | |__________^
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0433, E0698.
[INFO] [stdout] For more information about an error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 16)
[INFO] [stdout]     src/lib.rs - (line 3)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.57s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "bb30fef1b6073ee1e69f4055f495a2ed255b3cbfcd35b3e344380f5d09cbac72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb30fef1b6073ee1e69f4055f495a2ed255b3cbfcd35b3e344380f5d09cbac72", kill_on_drop: false }`
[INFO] [stdout] bb30fef1b6073ee1e69f4055f495a2ed255b3cbfcd35b3e344380f5d09cbac72