[INFO] fetching crate async-buffer 0.2.0...
[INFO] checking async-buffer-0.2.0 against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] extracting crate async-buffer 0.2.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate async-buffer 0.2.0 on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate async-buffer 0.2.0
[INFO] finished tweaking crates.io crate async-buffer 0.2.0
[INFO] tweaked toml for crates.io crate async-buffer 0.2.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", 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] c7e3b5d5e61aa3e062c8247f48385e6b1c3a325e399de98a05f190f6c472a0b2
[INFO] running `Command { std: "docker" "start" "-a" "c7e3b5d5e61aa3e062c8247f48385e6b1c3a325e399de98a05f190f6c472a0b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c7e3b5d5e61aa3e062c8247f48385e6b1c3a325e399de98a05f190f6c472a0b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7e3b5d5e61aa3e062c8247f48385e6b1c3a325e399de98a05f190f6c472a0b2", kill_on_drop: false }`
[INFO] [stdout] c7e3b5d5e61aa3e062c8247f48385e6b1c3a325e399de98a05f190f6c472a0b2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--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] f260c93827b47b1b29c14f4b37658d868551eab250ad04133b3a16a5bc79300f
[INFO] running `Command { std: "docker" "start" "-a" "f260c93827b47b1b29c14f4b37658d868551eab250ad04133b3a16a5bc79300f", kill_on_drop: false }`
[INFO] [stderr]     Checking async-buffer v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "f260c93827b47b1b29c14f4b37658d868551eab250ad04133b3a16a5bc79300f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f260c93827b47b1b29c14f4b37658d868551eab250ad04133b3a16a5bc79300f", kill_on_drop: false }`
[INFO] [stdout] f260c93827b47b1b29c14f4b37658d868551eab250ad04133b3a16a5bc79300f