[INFO] fetching crate mqtt_5 0.1.1...
[INFO] checking mqtt_5-0.1.1 against master#a874956d940ecb3ed524b6176a171219ac4787ea for pr-76104
[INFO] extracting crate mqtt_5 0.1.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate mqtt_5 0.1.1 on toolchain a874956d940ecb3ed524b6176a171219ac4787ea
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mqtt_5 0.1.1
[INFO] finished tweaking crates.io crate mqtt_5 0.1.1
[INFO] tweaked toml for crates.io crate mqtt_5 0.1.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f0b4b3f69d1e888510f76188b7f0817cf9013c7dcb820710806651dbcc7f635a
[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" "f0b4b3f69d1e888510f76188b7f0817cf9013c7dcb820710806651dbcc7f635a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f0b4b3f69d1e888510f76188b7f0817cf9013c7dcb820710806651dbcc7f635a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0b4b3f69d1e888510f76188b7f0817cf9013c7dcb820710806651dbcc7f635a", kill_on_drop: false }`
[INFO] [stdout] f0b4b3f69d1e888510f76188b7f0817cf9013c7dcb820710806651dbcc7f635a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "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] 828d331536be2aa4eddb2b9a98fbb5d7410e6850b22965f0775c2b366fe4654f
[INFO] running `Command { std: "docker" "start" "-a" "828d331536be2aa4eddb2b9a98fbb5d7410e6850b22965f0775c2b366fe4654f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.21
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking vec-arena v1.0.0
[INFO] [stderr]     Checking bit_reverse v0.1.8
[INFO] [stderr]     Checking async-mutex v1.3.0
[INFO] [stderr]     Checking crossbeam-utils v0.7.2
[INFO] [stderr]     Checking nb-connect v1.0.0
[INFO] [stderr]     Checking futures-lite v1.7.0
[INFO] [stderr]     Checking backtrace v0.3.50
[INFO] [stderr]     Checking polling v1.0.3
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking async-io v1.1.2
[INFO] [stderr]     Checking async-executor v1.2.0
[INFO] [stderr]     Checking blocking v1.0.0
[INFO] [stderr]    Compiling syn v1.0.41
[INFO] [stderr]     Checking async-global-executor v1.0.2
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling async-attributes v1.1.1
[INFO] [stderr]    Compiling async-trait v0.1.40
[INFO] [stderr]    Compiling packattack-derive v0.3.1
[INFO] [stderr]     Checking async-std v1.6.4
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking bitreader_async v0.2.0
[INFO] [stderr]     Checking packattack v0.1.0
[INFO] [stderr]     Checking mqtt_5 v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 44.71s
[INFO] running `Command { std: "docker" "inspect" "828d331536be2aa4eddb2b9a98fbb5d7410e6850b22965f0775c2b366fe4654f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "828d331536be2aa4eddb2b9a98fbb5d7410e6850b22965f0775c2b366fe4654f", kill_on_drop: false }`
[INFO] [stdout] 828d331536be2aa4eddb2b9a98fbb5d7410e6850b22965f0775c2b366fe4654f