[INFO] fetching crate serial-io 0.3.0...
[INFO] checking serial-io-0.3.0 against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] extracting crate serial-io 0.3.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate serial-io 0.3.0 on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serial-io 0.3.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate serial-io 0.3.0
[INFO] tweaked toml for crates.io crate serial-io 0.3.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate serial-io 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5f095c51d8eaf0309f1c99710b047487cec5dd25f2688bfb1384b99517149a19
[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" "5f095c51d8eaf0309f1c99710b047487cec5dd25f2688bfb1384b99517149a19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5f095c51d8eaf0309f1c99710b047487cec5dd25f2688bfb1384b99517149a19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f095c51d8eaf0309f1c99710b047487cec5dd25f2688bfb1384b99517149a19", kill_on_drop: false }`
[INFO] [stdout] 5f095c51d8eaf0309f1c99710b047487cec5dd25f2688bfb1384b99517149a19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 51b7a9836fcf3b071640776115c4a5e6c766a19f12fda71d3f63871e8e13cde5
[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" "51b7a9836fcf3b071640776115c4a5e6c766a19f12fda71d3f63871e8e13cde5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.96
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling nix v0.16.1
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling tokio v1.6.1
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]     Checking nix v0.21.0
[INFO] [stderr]     Checking mio v0.7.11
[INFO] [stderr]     Checking libudev v0.2.0
[INFO] [stderr]     Checking serialport v4.0.1
[INFO] [stderr]     Checking serial-io v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling tokio-macros v1.2.0
[INFO] [stderr]     Checking tokio-util v0.6.7
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.59s
[INFO] running `Command { std: "docker" "inspect" "51b7a9836fcf3b071640776115c4a5e6c766a19f12fda71d3f63871e8e13cde5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51b7a9836fcf3b071640776115c4a5e6c766a19f12fda71d3f63871e8e13cde5", kill_on_drop: false }`
[INFO] [stdout] 51b7a9836fcf3b071640776115c4a5e6c766a19f12fda71d3f63871e8e13cde5