[INFO] fetching crate mqtt-async-client 0.2.0...
[INFO] checking mqtt-async-client-0.2.0 against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] extracting crate mqtt-async-client 0.2.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate mqtt-async-client 0.2.0 on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mqtt-async-client 0.2.0
[INFO] finished tweaking crates.io crate mqtt-async-client 0.2.0
[INFO] tweaked toml for crates.io crate mqtt-async-client 0.2.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate mqtt-async-client 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mio v0.7.8
[INFO] [stderr]   Downloaded webpki-roots v0.18.0
[INFO] [stderr]   Downloaded mqttrs v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "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] dd942f8f19b34fe2a824ea416cd70eb19b9627ecdac7a15cdf6661f64198cb1b
[INFO] running `Command { std: "docker" "start" "-a" "dd942f8f19b34fe2a824ea416cd70eb19b9627ecdac7a15cdf6661f64198cb1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dd942f8f19b34fe2a824ea416cd70eb19b9627ecdac7a15cdf6661f64198cb1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd942f8f19b34fe2a824ea416cd70eb19b9627ecdac7a15cdf6661f64198cb1b", kill_on_drop: false }`
[INFO] [stdout] dd942f8f19b34fe2a824ea416cd70eb19b9627ecdac7a15cdf6661f64198cb1b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9ca44968f45954e76710d214fe01318fc5095fc88b4289b0bb0e106ab533333f
[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" "9ca44968f45954e76710d214fe01318fc5095fc88b4289b0bb0e106ab533333f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]    Compiling tokio v1.2.0
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking mqttrs v0.2.0
[INFO] [stderr]     Checking futures-task v0.3.12
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking mio v0.7.8
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]     Checking webpki v0.21.4
[INFO] [stderr]     Checking sct v0.6.0
[INFO] [stderr]     Checking rustls v0.19.0
[INFO] [stderr]     Checking webpki-roots v0.18.0
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]    Compiling tokio-macros v1.1.0
[INFO] [stderr]    Compiling futures-macro v0.3.12
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]     Checking futures-util v0.3.12
[INFO] [stderr]     Checking structopt v0.3.21
[INFO] [stderr]     Checking tokio-rustls v0.22.0
[INFO] [stderr]     Checking mqtt-async-client v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 49.40s
[INFO] running `Command { std: "docker" "inspect" "9ca44968f45954e76710d214fe01318fc5095fc88b4289b0bb0e106ab533333f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ca44968f45954e76710d214fe01318fc5095fc88b4289b0bb0e106ab533333f", kill_on_drop: false }`
[INFO] [stdout] 9ca44968f45954e76710d214fe01318fc5095fc88b4289b0bb0e106ab533333f