[INFO] fetching crate maybe-async 0.2.6...
[INFO] checking maybe-async-0.2.6 against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] extracting crate maybe-async 0.2.6 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate maybe-async 0.2.6 on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate maybe-async 0.2.6
[INFO] finished tweaking crates.io crate maybe-async 0.2.6
[INFO] tweaked toml for crates.io crate maybe-async 0.2.6 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate maybe-async 0.2.6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 58fa74b12f2a65611ecc351ab9a7299e9fbf27e3398e199aa9de5172e1a2c00f
[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" "58fa74b12f2a65611ecc351ab9a7299e9fbf27e3398e199aa9de5172e1a2c00f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "58fa74b12f2a65611ecc351ab9a7299e9fbf27e3398e199aa9de5172e1a2c00f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58fa74b12f2a65611ecc351ab9a7299e9fbf27e3398e199aa9de5172e1a2c00f", kill_on_drop: false }`
[INFO] [stdout] 58fa74b12f2a65611ecc351ab9a7299e9fbf27e3398e199aa9de5172e1a2c00f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6e64f3082a52921ab118504c6777a2ac5ee12971281bc46da2a4a46938eb29c3
[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" "6e64f3082a52921ab118504c6777a2ac5ee12971281bc46da2a4a46938eb29c3", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]     Checking pin-project-lite v0.2.6
[INFO] [stderr]    Compiling async-trait v0.1.50
[INFO] [stderr]    Compiling trybuild v1.0.42
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.4
[INFO] [stderr]    Compiling tokio v1.6.0
[INFO] [stderr]     Checking async-channel v1.6.1
[INFO] [stderr]     Checking socket2 v0.4.0
[INFO] [stderr]     Checking futures-lite v1.11.3
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.7
[INFO] [stderr]     Checking async-executor v1.4.1
[INFO] [stderr]     Checking blocking v1.0.2
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking maybe-async v0.2.6 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling ctor v0.1.20
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling async-attributes v1.1.2
[INFO] [stderr]    Compiling tokio-macros v1.2.0
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]     Checking polling v2.0.3
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking async-io v1.4.1
[INFO] [stderr]     Checking async-global-executor v2.0.2
[INFO] [stderr]     Checking async-std v1.9.0
[INFO] [stderr]     Checking serde v1.0.126
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.95s
[INFO] running `Command { std: "docker" "inspect" "6e64f3082a52921ab118504c6777a2ac5ee12971281bc46da2a4a46938eb29c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e64f3082a52921ab118504c6777a2ac5ee12971281bc46da2a4a46938eb29c3", kill_on_drop: false }`
[INFO] [stdout] 6e64f3082a52921ab118504c6777a2ac5ee12971281bc46da2a4a46938eb29c3