[INFO] fetching crate nbd-async 0.4.0...
[INFO] checking nbd-async-0.4.0 against try#32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d for pr-83312
[INFO] extracting crate nbd-async 0.4.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate nbd-async 0.4.0 on toolchain 32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nbd-async 0.4.0
[INFO] finished tweaking crates.io crate nbd-async 0.4.0
[INFO] tweaked toml for crates.io crate nbd-async 0.4.0 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate crates.io crate nbd-async 0.4.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ca60ee3bdc924f7332d100e18bf28a3fb7f0f63e4a20031e359a26119ae9fa44
[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" "ca60ee3bdc924f7332d100e18bf28a3fb7f0f63e4a20031e359a26119ae9fa44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ca60ee3bdc924f7332d100e18bf28a3fb7f0f63e4a20031e359a26119ae9fa44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca60ee3bdc924f7332d100e18bf28a3fb7f0f63e4a20031e359a26119ae9fa44", kill_on_drop: false }`
[INFO] [stdout] ca60ee3bdc924f7332d100e18bf28a3fb7f0f63e4a20031e359a26119ae9fa44
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 720525c75d3a63020cd932f5bec773b9edbf1353f083caa10fe9181df93a837a
[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" "720525c75d3a63020cd932f5bec773b9edbf1353f083caa10fe9181df93a837a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking futures-core v0.3.10
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking futures-task v0.3.10
[INFO] [stderr]     Checking log v0.4.13
[INFO] [stderr]     Checking futures-util v0.3.10
[INFO] [stderr]    Compiling tokio v1.0.1
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking mio v0.7.7
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking nix v0.19.1
[INFO] [stderr]    Compiling tokio-macros v1.0.0
[INFO] [stderr]    Compiling async-trait v0.1.42
[INFO] [stderr]     Checking nbd-async v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.71s
[INFO] running `Command { std: "docker" "inspect" "720525c75d3a63020cd932f5bec773b9edbf1353f083caa10fe9181df93a837a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "720525c75d3a63020cd932f5bec773b9edbf1353f083caa10fe9181df93a837a", kill_on_drop: false }`
[INFO] [stdout] 720525c75d3a63020cd932f5bec773b9edbf1353f083caa10fe9181df93a837a