[INFO] fetching crate dmux 0.6.2...
[INFO] checking dmux-0.6.2 against master#0d37dca25a51fb900a402c94c8818ad1c2789e30 for pr-77526
[INFO] extracting crate dmux 0.6.2 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate dmux 0.6.2 on toolchain 0d37dca25a51fb900a402c94c8818ad1c2789e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dmux 0.6.2
[INFO] finished tweaking crates.io crate dmux 0.6.2
[INFO] tweaked toml for crates.io crate dmux 0.6.2 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate dmux 0.6.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f6e35e09c71d3e1f483f4636c6560945af9f7aa6f1c7225b4c59a428677a080c
[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" "f6e35e09c71d3e1f483f4636c6560945af9f7aa6f1c7225b4c59a428677a080c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f6e35e09c71d3e1f483f4636c6560945af9f7aa6f1c7225b4c59a428677a080c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6e35e09c71d3e1f483f4636c6560945af9f7aa6f1c7225b4c59a428677a080c", kill_on_drop: false }`
[INFO] [stdout] f6e35e09c71d3e1f483f4636c6560945af9f7aa6f1c7225b4c59a428677a080c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cc6809892e13707ff5ec68ce14651c55b966f8b803d86d92899c0aed3db276b9
[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" "cc6809892e13707ff5ec68ce14651c55b966f8b803d86d92899c0aed3db276b9", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking tmux_interface v0.0.6
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]    Compiling nom v5.1.1
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]    Compiling lexical-core v0.6.2
[INFO] [stderr]     Checking bstr v0.2.13
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]     Checking globset v0.4.5
[INFO] [stderr]     Checking serde-hjson v0.9.1
[INFO] [stderr]     Checking grep-cli v0.1.4
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking serde_json v1.0.51
[INFO] [stderr]     Checking config v0.10.1
[INFO] [stderr]     Checking dmux v0.6.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.39s
[INFO] running `Command { std: "docker" "inspect" "cc6809892e13707ff5ec68ce14651c55b966f8b803d86d92899c0aed3db276b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc6809892e13707ff5ec68ce14651c55b966f8b803d86d92899c0aed3db276b9", kill_on_drop: false }`
[INFO] [stdout] cc6809892e13707ff5ec68ce14651c55b966f8b803d86d92899c0aed3db276b9