[INFO] fetching crate esp8266-wifi-serial 0.1.3...
[INFO] checking esp8266-wifi-serial-0.1.3 against master#8c6ce6b91b172f77c795a74bfeaf74b865146b3f for pr-101345
[INFO] extracting crate esp8266-wifi-serial 0.1.3 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate esp8266-wifi-serial 0.1.3 on toolchain 8c6ce6b91b172f77c795a74bfeaf74b865146b3f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8c6ce6b91b172f77c795a74bfeaf74b865146b3f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate esp8266-wifi-serial 0.1.3
[INFO] finished tweaking crates.io crate esp8266-wifi-serial 0.1.3
[INFO] tweaked toml for crates.io crate esp8266-wifi-serial 0.1.3 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8c6ce6b91b172f77c795a74bfeaf74b865146b3f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8c6ce6b91b172f77c795a74bfeaf74b865146b3f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded CoreFoundation-sys v0.1.4
[INFO] [stderr]   Downloaded mach v0.1.2
[INFO] [stderr]   Downloaded IOKit-sys v0.1.5
[INFO] [stderr]   Downloaded libudev v0.3.0
[INFO] [stderr]   Downloaded serialport v4.2.0
[INFO] [stderr]   Downloaded simple-clock v0.1.0
[INFO] [stderr]   Downloaded no-std-net v0.5.0
[INFO] [stderr]   Downloaded no-stdout v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+8c6ce6b91b172f77c795a74bfeaf74b865146b3f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c8419692184f31cca03005f39d288356078d3e153982ec53ce85494dfee5518e
[INFO] running `Command { std: "docker" "start" "-a" "c8419692184f31cca03005f39d288356078d3e153982ec53ce85494dfee5518e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c8419692184f31cca03005f39d288356078d3e153982ec53ce85494dfee5518e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8419692184f31cca03005f39d288356078d3e153982ec53ce85494dfee5518e", kill_on_drop: false }`
[INFO] [stdout] c8419692184f31cca03005f39d288356078d3e153982ec53ce85494dfee5518e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+8c6ce6b91b172f77c795a74bfeaf74b865146b3f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2aa71d2c9b5ff7935cb3670b13f98d96ca2fe64cd0e3778c22e54f38ebbd4b3c
[INFO] running `Command { std: "docker" "start" "-a" "2aa71d2c9b5ff7935cb3670b13f98d96ca2fe64cd0e3778c22e54f38ebbd4b3c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling semver v1.0.13
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling serde_derive v1.0.144
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling serde v1.0.144
[INFO] [stderr]     Checking nb v1.0.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling anyhow v1.0.63
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking simple-clock v0.1.0
[INFO] [stderr]     Checking no-stdout v0.1.0
[INFO] [stderr]     Checking no-std-net v0.5.0
[INFO] [stderr]     Checking assert_matches v1.5.0
[INFO] [stderr]     Checking once_cell v1.14.0
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking hash32 v0.2.1
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]    Compiling lock_api v0.4.8
[INFO] [stderr]    Compiling nom v6.1.2
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]     Checking nix v0.24.2
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking libudev v0.3.0
[INFO] [stderr]     Checking spin v0.9.4
[INFO] [stderr]    Compiling heapless v0.7.16
[INFO] [stderr]     Checking serialport v4.2.0
[INFO] [stderr]     Checking esp8266-wifi-serial v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `guard` is never read
[INFO] [stdout]   --> tests/common/mod.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 40 | struct SerialPortWrapper {
[INFO] [stdout]    |        ----------------- field in this struct
[INFO] [stdout] 41 |     guard: Rc<MutexGuard<'static, ()>>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout]    = note: `SerialPortWrapper` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.89s
[INFO] running `Command { std: "docker" "inspect" "2aa71d2c9b5ff7935cb3670b13f98d96ca2fe64cd0e3778c22e54f38ebbd4b3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2aa71d2c9b5ff7935cb3670b13f98d96ca2fe64cd0e3778c22e54f38ebbd4b3c", kill_on_drop: false }`
[INFO] [stdout] 2aa71d2c9b5ff7935cb3670b13f98d96ca2fe64cd0e3778c22e54f38ebbd4b3c