[INFO] fetching crate async-os 0.2.0...
[INFO] checking async-os-0.2.0 against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] extracting crate async-os 0.2.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate async-os 0.2.0 on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate async-os 0.2.0
[INFO] finished tweaking crates.io crate async-os 0.2.0
[INFO] tweaked toml for crates.io crate async-os 0.2.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ddc7821cf2f71f084b3ca5a9db4511cad9850e4001d066d5870b043818faaa7a
[INFO] running `Command { std: "docker" "start" "-a" "ddc7821cf2f71f084b3ca5a9db4511cad9850e4001d066d5870b043818faaa7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ddc7821cf2f71f084b3ca5a9db4511cad9850e4001d066d5870b043818faaa7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ddc7821cf2f71f084b3ca5a9db4511cad9850e4001d066d5870b043818faaa7a", kill_on_drop: false }`
[INFO] [stdout] ddc7821cf2f71f084b3ca5a9db4511cad9850e4001d066d5870b043818faaa7a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bf71bf7f3bf56fe00a2d24d4b7d2ad000c27f1824f4d9d3b7b1ba59580822955
[INFO] running `Command { std: "docker" "start" "-a" "bf71bf7f3bf56fe00a2d24d4b7d2ad000c27f1824f4d9d3b7b1ba59580822955", kill_on_drop: false }`
[INFO] [stderr]     Checking async-os v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "bf71bf7f3bf56fe00a2d24d4b7d2ad000c27f1824f4d9d3b7b1ba59580822955", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf71bf7f3bf56fe00a2d24d4b7d2ad000c27f1824f4d9d3b7b1ba59580822955", kill_on_drop: false }`
[INFO] [stdout] bf71bf7f3bf56fe00a2d24d4b7d2ad000c27f1824f4d9d3b7b1ba59580822955