[INFO] fetching crate p50x 0.1.0...
[INFO] checking p50x-0.1.0 against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] extracting crate p50x 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate p50x 0.1.0 on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate p50x 0.1.0
[INFO] finished tweaking crates.io crate p50x 0.1.0
[INFO] tweaked toml for crates.io crate p50x 0.1.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate p50x 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serial-unit-testing v0.2.3
[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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 10534bc3a177361584bdbddd7da81e664ea51001119d07296c2a478a4bc4042b
[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" "10534bc3a177361584bdbddd7da81e664ea51001119d07296c2a478a4bc4042b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "10534bc3a177361584bdbddd7da81e664ea51001119d07296c2a478a4bc4042b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10534bc3a177361584bdbddd7da81e664ea51001119d07296c2a478a4bc4042b", kill_on_drop: false }`
[INFO] [stdout] 10534bc3a177361584bdbddd7da81e664ea51001119d07296c2a478a4bc4042b
[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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3080f7342f76a286b971d24cc643ba29cdee5eeea5bac2b73786e300ae8815fa
[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" "3080f7342f76a286b971d24cc643ba29cdee5eeea5bac2b73786e300ae8815fa", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]     Checking safe-transmute v0.10.1
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]     Checking libudev v0.2.0
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]     Checking serialport v3.3.0
[INFO] [stderr]     Checking serial-unit-testing v0.2.3
[INFO] [stderr]     Checking p50x v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/lib/error.rs:64:47
[INFO] [stdout]    |
[INFO] [stdout] 64 |             Error::Serial(ref cause) => cause.description(),
[INFO] [stdout]    |                                               ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/lib/error.rs:64:47
[INFO] [stdout]    |
[INFO] [stdout] 64 |             Error::Serial(ref cause) => cause.description(),
[INFO] [stdout]    |                                               ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `send_u32`
[INFO] [stdout]   --> src/lib/device.rs:96:8
[INFO] [stdout]    |
[INFO] [stdout] 96 |     fn send_u32(&mut self, value: u32) -> Result<()> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `send_u32`
[INFO] [stdout]   --> src/lib/device.rs:96:8
[INFO] [stdout]    |
[INFO] [stdout] 96 |     fn send_u32(&mut self, value: u32) -> Result<()> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.75s
[INFO] running `Command { std: "docker" "inspect" "3080f7342f76a286b971d24cc643ba29cdee5eeea5bac2b73786e300ae8815fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3080f7342f76a286b971d24cc643ba29cdee5eeea5bac2b73786e300ae8815fa", kill_on_drop: false }`
[INFO] [stdout] 3080f7342f76a286b971d24cc643ba29cdee5eeea5bac2b73786e300ae8815fa