[INFO] cloning repository https://github.com/adragott/Serial_Rust_Learning [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/adragott/Serial_Rust_Learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fadragott%2FSerial_Rust_Learning", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fadragott%2FSerial_Rust_Learning'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 793ed8bd526ac92504690f517e2e45b85f92cbc9 [INFO] testing adragott/Serial_Rust_Learning against 1.55.0 for beta-1.56-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fadragott%2FSerial_Rust_Learning" "/workspace/builds/worker-9/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/adragott/Serial_Rust_Learning on toolchain 1.55.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] removed /workspace/builds/worker-9/source/.cargo/config [INFO] started tweaking git repo https://github.com/adragott/Serial_Rust_Learning [INFO] finished tweaking git repo https://github.com/adragott/Serial_Rust_Learning [INFO] tweaked toml for git repo https://github.com/adragott/Serial_Rust_Learning written to /workspace/builds/worker-9/source/Cargo.toml [INFO] crate git repo https://github.com/adragott/Serial_Rust_Learning already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 9ccc9b6a82ae328b5d8a45bd33291de168dabf21f064eeeaf3723dd7fda13722 [INFO] running `Command { std: "docker" "start" "-a" "9ccc9b6a82ae328b5d8a45bd33291de168dabf21f064eeeaf3723dd7fda13722", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "9ccc9b6a82ae328b5d8a45bd33291de168dabf21f064eeeaf3723dd7fda13722", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9ccc9b6a82ae328b5d8a45bd33291de168dabf21f064eeeaf3723dd7fda13722", kill_on_drop: false }` [INFO] [stdout] 9ccc9b6a82ae328b5d8a45bd33291de168dabf21f064eeeaf3723dd7fda13722 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4ca872409272dd6a0213992b54a9e353562f3eb7ede6cca5f79fe1576c76b0c3 [INFO] running `Command { std: "docker" "start" "-a" "4ca872409272dd6a0213992b54a9e353562f3eb7ede6cca5f79fe1576c76b0c3", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.66 [INFO] [stderr] Compiling ioctl-rs v0.1.6 [INFO] [stderr] Compiling termios v0.2.2 [INFO] [stderr] Compiling serial-core v0.4.0 [INFO] [stderr] Compiling serial-unix v0.4.0 [INFO] [stderr] Compiling serial v0.4.0 [INFO] [stderr] Compiling serial_rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::str` [INFO] [stdout] --> src/main.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use std::str; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> src/main.rs:45:5 [INFO] [stdout] | [INFO] [stdout] 28 | / loop [INFO] [stdout] 29 | | { [INFO] [stdout] 30 | | let mut buf = [0_u8; 256]; [INFO] [stdout] 31 | | let count = match port.read(&mut buf) [INFO] [stdout] ... | [INFO] [stdout] 43 | | io::stdout().flush().unwrap(); [INFO] [stdout] 44 | | } [INFO] [stdout] | |____- any code following this expression is unreachable [INFO] [stdout] 45 | Ok(()) [INFO] [stdout] | ^^^^^^ unreachable expression [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 5.95s [INFO] running `Command { std: "docker" "inspect" "4ca872409272dd6a0213992b54a9e353562f3eb7ede6cca5f79fe1576c76b0c3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4ca872409272dd6a0213992b54a9e353562f3eb7ede6cca5f79fe1576c76b0c3", kill_on_drop: false }` [INFO] [stdout] 4ca872409272dd6a0213992b54a9e353562f3eb7ede6cca5f79fe1576c76b0c3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] dc5b6b1e727712d3d101a85a2a90f92ef092ff990b08c8090f34654d25648c65 [INFO] running `Command { std: "docker" "start" "-a" "dc5b6b1e727712d3d101a85a2a90f92ef092ff990b08c8090f34654d25648c65", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling serial_rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::str` [INFO] [stdout] --> src/main.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use std::str; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> src/main.rs:45:5 [INFO] [stdout] | [INFO] [stdout] 28 | / loop [INFO] [stdout] 29 | | { [INFO] [stdout] 30 | | let mut buf = [0_u8; 256]; [INFO] [stdout] 31 | | let count = match port.read(&mut buf) [INFO] [stdout] ... | [INFO] [stdout] 43 | | io::stdout().flush().unwrap(); [INFO] [stdout] 44 | | } [INFO] [stdout] | |____- any code following this expression is unreachable [INFO] [stdout] 45 | Ok(()) [INFO] [stdout] | ^^^^^^ unreachable expression [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 10.24s [INFO] running `Command { std: "docker" "inspect" "dc5b6b1e727712d3d101a85a2a90f92ef092ff990b08c8090f34654d25648c65", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "dc5b6b1e727712d3d101a85a2a90f92ef092ff990b08c8090f34654d25648c65", kill_on_drop: false }` [INFO] [stdout] dc5b6b1e727712d3d101a85a2a90f92ef092ff990b08c8090f34654d25648c65 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] e936b2904c85297402e595b30ad0bc17b0f40da491c1026e77d97879f8c7e3da [INFO] running `Command { std: "docker" "start" "-a" "e936b2904c85297402e595b30ad0bc17b0f40da491c1026e77d97879f8c7e3da", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] warning: unused import: `std::str` [INFO] [stderr] --> src/main.rs:6:5 [INFO] [stderr] | [INFO] [stderr] 6 | use std::str; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unreachable expression [INFO] [stderr] --> src/main.rs:45:5 [INFO] [stderr] | [INFO] [stderr] 28 | / loop [INFO] [stderr] 29 | | { [INFO] [stderr] 30 | | let mut buf = [0_u8; 256]; [INFO] [stderr] 31 | | let count = match port.read(&mut buf) [INFO] [stderr] ... | [INFO] [stderr] 43 | | io::stdout().flush().unwrap(); [INFO] [stderr] 44 | | } [INFO] [stderr] | |____- any code following this expression is unreachable [INFO] [stderr] 45 | Ok(()) [INFO] [stderr] | ^^^^^^ unreachable expression [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unreachable_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: `serial_rust` (bin "serial_rust" test) generated 2 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.27s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/serial_rust-99ef1b988e56b461) [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" "e936b2904c85297402e595b30ad0bc17b0f40da491c1026e77d97879f8c7e3da", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e936b2904c85297402e595b30ad0bc17b0f40da491c1026e77d97879f8c7e3da", kill_on_drop: false }` [INFO] [stdout] e936b2904c85297402e595b30ad0bc17b0f40da491c1026e77d97879f8c7e3da