[INFO] cloning repository https://github.com/QuorumComp/uart-server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/QuorumComp/uart-server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FQuorumComp%2Fuart-server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FQuorumComp%2Fuart-server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8674f136f6d9bd6faf37671ba8eb872ab314a19a
[INFO] checking QuorumComp/uart-server against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FQuorumComp%2Fuart-server" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/QuorumComp/uart-server on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-2/source/.cargo/config
[INFO] started tweaking git repo https://github.com/QuorumComp/uart-server
[INFO] finished tweaking git repo https://github.com/QuorumComp/uart-server
[INFO] tweaked toml for git repo https://github.com/QuorumComp/uart-server written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/QuorumComp/uart-server already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nix v0.16.1
[INFO] [stderr]   Downloaded ncurses v5.99.0
[INFO] [stderr]   Downloaded serialport v4.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f1f4a62441050f4e77fa8b4f1612ea94224aff895e644eb36421bd0d3fe3af90
[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" "f1f4a62441050f4e77fa8b4f1612ea94224aff895e644eb36421bd0d3fe3af90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f1f4a62441050f4e77fa8b4f1612ea94224aff895e644eb36421bd0d3fe3af90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1f4a62441050f4e77fa8b4f1612ea94224aff895e644eb36421bd0d3fe3af90", kill_on_drop: false }`
[INFO] [stdout] f1f4a62441050f4e77fa8b4f1612ea94224aff895e644eb36421bd0d3fe3af90
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 230661ac837b0f49d85eeea23988f3464aaf40f3eaf9e28abd63e1f8d0d5ff0a
[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" "230661ac837b0f49d85eeea23988f3464aaf40f3eaf9e28abd63e1f8d0d5ff0a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling cc v1.0.61
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling uart-server v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling ncurses v5.99.0
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking nix v0.16.1
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking libudev v0.2.0
[INFO] [stderr]    Compiling num-derive v0.3.3
[INFO] [stderr]     Checking serialport v4.0.0
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.36s
[INFO] running `Command { std: "docker" "inspect" "230661ac837b0f49d85eeea23988f3464aaf40f3eaf9e28abd63e1f8d0d5ff0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "230661ac837b0f49d85eeea23988f3464aaf40f3eaf9e28abd63e1f8d0d5ff0a", kill_on_drop: false }`
[INFO] [stdout] 230661ac837b0f49d85eeea23988f3464aaf40f3eaf9e28abd63e1f8d0d5ff0a