[INFO] cloning repository https://github.com/cbiffle/sds011-reader
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cbiffle/sds011-reader" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcbiffle%2Fsds011-reader", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcbiffle%2Fsds011-reader'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f449b2cb5d3e91f4433a3d24234a256cd112dd8e
[INFO] checking cbiffle/sds011-reader against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcbiffle%2Fsds011-reader" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/cbiffle/sds011-reader
[INFO] finished tweaking git repo https://github.com/cbiffle/sds011-reader
[INFO] tweaked toml for git repo https://github.com/cbiffle/sds011-reader written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/cbiffle/sds011-reader on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/cbiffle/sds011-reader already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8a49a08d2814b05db007f929d1468aff68e0577ab8ed47ad7b0b45e6015f239e
[INFO] running `Command { std: "docker" "start" "-a" "8a49a08d2814b05db007f929d1468aff68e0577ab8ed47ad7b0b45e6015f239e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8a49a08d2814b05db007f929d1468aff68e0577ab8ed47ad7b0b45e6015f239e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a49a08d2814b05db007f929d1468aff68e0577ab8ed47ad7b0b45e6015f239e", kill_on_drop: false }`
[INFO] [stdout] 8a49a08d2814b05db007f929d1468aff68e0577ab8ed47ad7b0b45e6015f239e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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 -Dunmustuse_in_always_ok" "-e" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 007d2758a0a4f0dd37c350d2de77faa7fb8cb50ec2f076684bce0cf70245abe8
[INFO] running `Command { std: "docker" "start" "-a" "007d2758a0a4f0dd37c350d2de77faa7fb8cb50ec2f076684bce0cf70245abe8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.21
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.40
[INFO] [stderr]    Compiling pkg-config v0.3.18
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking libudev v0.2.0
[INFO] [stderr]     Checking chrono v0.4.15
[INFO] [stderr]     Checking serialport v3.3.0
[INFO] [stderr]    Compiling structopt-derive v0.4.10
[INFO] [stderr]     Checking structopt v0.3.17
[INFO] [stderr]     Checking sds011-reader v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/main.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout]  8 | /     /// Path to serial port to use. On Linux this is something like
[INFO] [stdout]  9 | |     /// `/dev/ttyUSB0`. On Mac, `/dev/tty.somethingorother`.
[INFO] [stdout] 10 | |     serial_port: std::path::PathBuf,
[INFO] [stdout]    | |___________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/main.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout]  8 | /     /// Path to serial port to use. On Linux this is something like
[INFO] [stdout]  9 | |     /// `/dev/ttyUSB0`. On Mac, `/dev/tty.somethingorother`.
[INFO] [stdout] 10 | |     serial_port: std::path::PathBuf,
[INFO] [stdout]    | |___________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sds011-reader` (bin "sds011-reader" test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `sds011-reader` (bin "sds011-reader") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "007d2758a0a4f0dd37c350d2de77faa7fb8cb50ec2f076684bce0cf70245abe8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "007d2758a0a4f0dd37c350d2de77faa7fb8cb50ec2f076684bce0cf70245abe8", kill_on_drop: false }`
[INFO] [stdout] 007d2758a0a4f0dd37c350d2de77faa7fb8cb50ec2f076684bce0cf70245abe8
