[INFO] fetching crate hotmic 0.8.2...
[INFO] checking hotmic-0.8.2 against master#4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5 for pr-81174
[INFO] extracting crate hotmic 0.8.2 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate hotmic 0.8.2 on toolchain 4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hotmic 0.8.2
[INFO] finished tweaking crates.io crate hotmic 0.8.2
[INFO] tweaked toml for crates.io crate hotmic 0.8.2 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "fetch" "--locked" "--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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "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] fc6b5112126b13309bb6e6bc17082acc50f03f0f29dc4187bc37ee105a2cf5fc
[INFO] running `Command { std: "docker" "start" "-a" "fc6b5112126b13309bb6e6bc17082acc50f03f0f29dc4187bc37ee105a2cf5fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fc6b5112126b13309bb6e6bc17082acc50f03f0f29dc4187bc37ee105a2cf5fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc6b5112126b13309bb6e6bc17082acc50f03f0f29dc4187bc37ee105a2cf5fc", kill_on_drop: false }`
[INFO] [stdout] fc6b5112126b13309bb6e6bc17082acc50f03f0f29dc4187bc37ee105a2cf5fc
[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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 550085511effe81367324dffecdc127ab808c32ae3b6d800d88275af72ada731
[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" "550085511effe81367324dffecdc127ab808c32ae3b6d800d88275af72ada731", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling log v0.4.13
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]     Checking owning_ref v0.4.1
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking hashbrown v0.1.8
[INFO] [stderr]     Checking tokio-sync v0.1.8
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]     Checking lock_api v0.1.5
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking flate2 v1.0.19
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking quanta v0.2.0
[INFO] [stderr]     Checking hdrhistogram v6.3.4
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]    Compiling derivative v1.0.4
[INFO] [stderr]     Checking hotmic v0.8.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.97s
[INFO] running `Command { std: "docker" "inspect" "550085511effe81367324dffecdc127ab808c32ae3b6d800d88275af72ada731", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "550085511effe81367324dffecdc127ab808c32ae3b6d800d88275af72ada731", kill_on_drop: false }`
[INFO] [stdout] 550085511effe81367324dffecdc127ab808c32ae3b6d800d88275af72ada731