[INFO] fetching crate stop-token 0.1.2...
[INFO] checking stop-token-0.1.2 against beta for pr-78714
[INFO] extracting crate stop-token 0.1.2 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate stop-token 0.1.2 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate stop-token 0.1.2
[INFO] finished tweaking crates.io crate stop-token 0.1.2
[INFO] tweaked toml for crates.io crate stop-token 0.1.2 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4fd01ca0667b847a02a99a4b809cafd2bddc00444d5f6f7baf8c33927ab1088c
[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" "4fd01ca0667b847a02a99a4b809cafd2bddc00444d5f6f7baf8c33927ab1088c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4fd01ca0667b847a02a99a4b809cafd2bddc00444d5f6f7baf8c33927ab1088c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fd01ca0667b847a02a99a4b809cafd2bddc00444d5f6f7baf8c33927ab1088c", kill_on_drop: false }`
[INFO] [stdout] 4fd01ca0667b847a02a99a4b809cafd2bddc00444d5f6f7baf8c33927ab1088c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9c5fd6d818da1a9a58a13a8d623b06a6b2f468ea6ce28ca94e81ec2e5e4eb42d
[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" "9c5fd6d818da1a9a58a13a8d623b06a6b2f468ea6ce28ca94e81ec2e5e4eb42d", kill_on_drop: false }`
[INFO] [stderr]     Checking polling v2.0.2
[INFO] [stderr]     Checking async-io v1.2.0
[INFO] [stderr]     Checking async-global-executor v1.4.3
[INFO] [stderr]     Checking async-std v1.7.0
[INFO] [stderr]     Checking stop-token v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved imports `async_std::sync::channel`, `async_std::sync::Receiver`, `async_std::sync::Sender`
[INFO] [stdout]   --> src/lib.rs:74:23
[INFO] [stdout]    |
[INFO] [stdout] 74 | use async_std::sync::{channel, Receiver, Sender};
[INFO] [stdout]    |                       ^^^^^^^  ^^^^^^^^  ^^^^^^ no `Sender` in `sync`
[INFO] [stdout]    |                       |        |
[INFO] [stdout]    |                       |        no `Receiver` in `sync`
[INFO] [stdout]    |                       no `channel` in `sync`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved imports `async_std::sync::channel`, `async_std::sync::Receiver`, `async_std::sync::Sender`
[INFO] [stdout]   --> src/lib.rs:74:23
[INFO] [stdout]    |
[INFO] [stdout] 74 | use async_std::sync::{channel, Receiver, Sender};
[INFO] [stdout]    |                       ^^^^^^^  ^^^^^^^^  ^^^^^^ no `Sender` in `sync`
[INFO] [stdout]    |                       |        |
[INFO] [stdout]    |                       |        no `Receiver` in `sync`
[INFO] [stdout]    |                       no `channel` in `sync`
[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 E0432`.
[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 E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `stop-token`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "9c5fd6d818da1a9a58a13a8d623b06a6b2f468ea6ce28ca94e81ec2e5e4eb42d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c5fd6d818da1a9a58a13a8d623b06a6b2f468ea6ce28ca94e81ec2e5e4eb42d", kill_on_drop: false }`
[INFO] [stdout] 9c5fd6d818da1a9a58a13a8d623b06a6b2f468ea6ce28ca94e81ec2e5e4eb42d