[INFO] fetching crate br-serial 0.0.1...
[INFO] testing br-serial-0.0.1 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate br-serial 0.0.1 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate br-serial 0.0.1
[INFO] finished tweaking crates.io crate br-serial 0.0.1
[INFO] tweaked toml for crates.io crate br-serial 0.0.1 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate br-serial 0.0.1 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate br-serial 0.0.1 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mach2 v0.4.1
[INFO] [stderr]   Downloaded IOKit-sys v0.1.5
[INFO] [stderr]   Downloaded CoreFoundation-sys v0.1.4
[INFO] [stderr]   Downloaded serial2 v0.2.6
[INFO] [stderr]   Downloaded errno v0.3.4
[INFO] [stderr]   Downloaded mach v0.1.2
[INFO] [stderr]   Downloaded serialport v4.2.2
[INFO] [stderr]   Downloaded regex v1.9.6
[INFO] [stderr]   Downloaded aho-corasick v1.1.1
[INFO] [stderr]   Downloaded regex-syntax v0.7.5
[INFO] [stderr]   Downloaded rustix v0.38.17
[INFO] [stderr]   Downloaded regex-automata v0.3.9
[INFO] [stderr]   Downloaded linux-raw-sys v0.4.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ce8fac411d68ac38e132713c1b7e67e1de334d2d5b666db9fa7fd20932c59d2d
[INFO] running `Command { std: "docker" "start" "-a" "ce8fac411d68ac38e132713c1b7e67e1de334d2d5b666db9fa7fd20932c59d2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ce8fac411d68ac38e132713c1b7e67e1de334d2d5b666db9fa7fd20932c59d2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce8fac411d68ac38e132713c1b7e67e1de334d2d5b666db9fa7fd20932c59d2d", kill_on_drop: false }`
[INFO] [stdout] ce8fac411d68ac38e132713c1b7e67e1de334d2d5b666db9fa7fd20932c59d2d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 03adc5d160ae3c0c63393489a4f8c42d7e21c10c64f719c3e87a15f6a9bf4d7b
[INFO] running `Command { std: "docker" "start" "-a" "03adc5d160ae3c0c63393489a4f8c42d7e21c10c64f719c3e87a15f6a9bf4d7b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling log v0.4.20
[INFO] [stderr]    Compiling json v0.12.4
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]    Compiling nix v0.26.4
[INFO] [stderr]    Compiling serial2 v0.2.6
[INFO] [stderr]    Compiling libudev v0.3.0
[INFO] [stderr]    Compiling serialport v4.2.2
[INFO] [stderr]    Compiling br-serial v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `step` is never read
[INFO] [stdout]   --> src/usb.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Usb {
[INFO] [stdout]    |            --- field in this struct
[INFO] [stdout] 11 |     pub com: String,
[INFO] [stdout] 12 |     pub step: i32,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Usb` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.32s
[INFO] running `Command { std: "docker" "inspect" "03adc5d160ae3c0c63393489a4f8c42d7e21c10c64f719c3e87a15f6a9bf4d7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03adc5d160ae3c0c63393489a4f8c42d7e21c10c64f719c3e87a15f6a9bf4d7b", kill_on_drop: false }`
[INFO] [stdout] 03adc5d160ae3c0c63393489a4f8c42d7e21c10c64f719c3e87a15f6a9bf4d7b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f0327734cc48a6ff94b64b082e13838972768ff2c5f784485a742062cb9d5cb7
[INFO] running `Command { std: "docker" "start" "-a" "f0327734cc48a6ff94b64b082e13838972768ff2c5f784485a742062cb9d5cb7", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.6.4
[INFO] [stderr]    Compiling rustix v0.38.17
[INFO] [stderr]    Compiling regex-syntax v0.7.5
[INFO] [stderr]    Compiling bitflags v2.4.0
[INFO] [stderr]    Compiling linux-raw-sys v0.4.9
[INFO] [stdout] warning: field `step` is never read
[INFO] [stdout]   --> src/usb.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Usb {
[INFO] [stdout]    |            --- field in this struct
[INFO] [stdout] 11 |     pub com: String,
[INFO] [stdout] 12 |     pub step: i32,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Usb` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling aho-corasick v1.1.1
[INFO] [stderr]    Compiling is-terminal v0.4.9
[INFO] [stderr]    Compiling regex-automata v0.3.9
[INFO] [stderr]    Compiling regex v1.9.6
[INFO] [stderr]    Compiling env_logger v0.10.0
[INFO] [stderr]    Compiling br-serial v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `step` is never read
[INFO] [stdout]   --> src/usb.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Usb {
[INFO] [stdout]    |            --- field in this struct
[INFO] [stdout] 11 |     pub com: String,
[INFO] [stdout] 12 |     pub step: i32,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Usb` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 8.45s
[INFO] running `Command { std: "docker" "inspect" "f0327734cc48a6ff94b64b082e13838972768ff2c5f784485a742062cb9d5cb7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0327734cc48a6ff94b64b082e13838972768ff2c5f784485a742062cb9d5cb7", kill_on_drop: false }`
[INFO] [stdout] f0327734cc48a6ff94b64b082e13838972768ff2c5f784485a742062cb9d5cb7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ae0a09056291c23eb640a8ab940ec917cac2f9d06042741b7e3ff5d2d4b9d57f
[INFO] running `Command { std: "docker" "start" "-a" "ae0a09056291c23eb640a8ab940ec917cac2f9d06042741b7e3ff5d2d4b9d57f", kill_on_drop: false }`
[INFO] [stderr] warning: field `step` is never read
[INFO] [stdout] 
[INFO] [stderr]   --> src/usb.rs:12:9
[INFO] [stdout] running 0 tests
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr] 10 | pub struct Usb {
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]    |            --- field in this struct
[INFO] [stdout] 
[INFO] [stderr] 11 |     pub com: String,
[INFO] [stderr] 12 |     pub step: i32,
[INFO] [stderr]    |         ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Usb` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `br-serial` (lib) generated 1 warning
[INFO] [stderr] warning: `br-serial` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/br_serial-218153ac441c5ba5)
[INFO] [stderr]    Doc-tests br_serial
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ae0a09056291c23eb640a8ab940ec917cac2f9d06042741b7e3ff5d2d4b9d57f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae0a09056291c23eb640a8ab940ec917cac2f9d06042741b7e3ff5d2d4b9d57f", kill_on_drop: false }`
[INFO] [stdout] ae0a09056291c23eb640a8ab940ec917cac2f9d06042741b7e3ff5d2d4b9d57f