[INFO] cloning repository https://github.com/anzbert/rust_pi_metronome
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/anzbert/rust_pi_metronome" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanzbert%2Frust_pi_metronome", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanzbert%2Frust_pi_metronome'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 95091873bbdec31337786a9396800395d5492df4
[INFO] testing anzbert/rust_pi_metronome against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanzbert%2Frust_pi_metronome" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/anzbert/rust_pi_metronome on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/anzbert/rust_pi_metronome
[INFO] finished tweaking git repo https://github.com/anzbert/rust_pi_metronome
[INFO] tweaked toml for git repo https://github.com/anzbert/rust_pi_metronome written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/anzbert/rust_pi_metronome already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/jmyhrman/ableton-link-rs`
[INFO] [stderr]     Updating git submodule `https://github.com/Ableton/link`
[INFO] [stderr]     Updating git submodule `https://github.com/chriskohlhoff/asio.git`
[INFO] [stderr]     Updating git repository `https://github.com/anzbert/rpi-ws281x-rust`
[INFO] [stderr]     Updating git submodule `https://github.com/jgarff/rpi_ws281x.git`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded which v3.1.1
[INFO] [stderr]   Downloaded libc v0.2.105
[INFO] [stderr]   Downloaded clang-sys v1.2.2
[INFO] [stderr]   Downloaded memchr v2.3.4
[INFO] [stderr]   Downloaded spin_sleep v1.0.0
[INFO] [stderr]   Downloaded embedded-hal v1.0.0-alpha.5
[INFO] [stderr]   Downloaded glob v0.3.0
[INFO] [stderr]   Downloaded cmake v0.1.46
[INFO] [stderr]   Downloaded nb v1.0.0
[INFO] [stderr]   Downloaded regex v1.4.6
[INFO] [stderr]   Downloaded nom v6.2.1
[INFO] [stderr]   Downloaded aho-corasick v0.7.15
[INFO] [stderr]   Downloaded bindgen v0.59.1
[INFO] [stderr]   Downloaded nb v0.1.3
[INFO] [stderr]   Downloaded cexpr v0.5.0
[INFO] [stderr]   Downloaded embedded-hal v0.2.6
[INFO] [stderr]   Downloaded rustc-hash v1.1.0
[INFO] [stderr]   Downloaded shlex v1.1.0
[INFO] [stderr]   Downloaded rppal v0.13.1
[INFO] [stderr]   Downloaded libloading v0.7.1
[INFO] [stderr]   Downloaded termcolor v1.1.2
[INFO] [stderr]   Downloaded lazycell v1.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c5e132ba6bfb36402d40642243fb38416f4efef7527da48284ba1f4490f452ad
[INFO] running `Command { std: "docker" "start" "-a" "c5e132ba6bfb36402d40642243fb38416f4efef7527da48284ba1f4490f452ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c5e132ba6bfb36402d40642243fb38416f4efef7527da48284ba1f4490f452ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5e132ba6bfb36402d40642243fb38416f4efef7527da48284ba1f4490f452ad", kill_on_drop: false }`
[INFO] [stdout] c5e132ba6bfb36402d40642243fb38416f4efef7527da48284ba1f4490f452ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3eaf26d3af5e9a6bb08b815f8a245bb48caaa4a40cd3462b0a7290fa0c7a153f
[INFO] running `Command { std: "docker" "start" "-a" "3eaf26d3af5e9a6bb08b815f8a245bb48caaa4a40cd3462b0a7290fa0c7a153f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.105
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling bindgen v0.59.1
[INFO] [stderr]    Compiling cc v1.0.71
[INFO] [stderr]    Compiling shlex v1.1.0
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling nb v1.0.0
[INFO] [stderr]    Compiling spin_sleep v1.0.0
[INFO] [stderr]    Compiling clang-sys v1.2.2
[INFO] [stderr]    Compiling nom v6.2.1
[INFO] [stderr]    Compiling nb v0.1.3
[INFO] [stderr]    Compiling embedded-hal v1.0.0-alpha.5
[INFO] [stderr]    Compiling embedded-hal v0.2.6
[INFO] [stderr]    Compiling cmake v0.1.46
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]    Compiling rppal v0.13.1
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling regex v1.4.6
[INFO] [stderr]    Compiling cexpr v0.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling env_logger v0.8.4
[INFO] [stderr]    Compiling rs_ws281x v0.4.2 (https://github.com/anzbert/rpi-ws281x-rust#887babf3)
[INFO] [stderr]    Compiling ableton-link v0.1.0 (https://github.com/jmyhrman/ableton-link-rs#e7b9fc2e)
[INFO] [stderr]    Compiling rust_pi_metronome v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `link`
[INFO] [stdout]  --> src/main.rs:7:13
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut link = lnk::init();
[INFO] [stdout]   |             ^^^^ help: if this is intentional, prefix it with an underscore: `_link`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/main.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut link = lnk::init();
[INFO] [stdout]   |         ----^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` 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 25.48s
[INFO] running `Command { std: "docker" "inspect" "3eaf26d3af5e9a6bb08b815f8a245bb48caaa4a40cd3462b0a7290fa0c7a153f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3eaf26d3af5e9a6bb08b815f8a245bb48caaa4a40cd3462b0a7290fa0c7a153f", kill_on_drop: false }`
[INFO] [stdout] 3eaf26d3af5e9a6bb08b815f8a245bb48caaa4a40cd3462b0a7290fa0c7a153f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9d26c254ed81f868fb82265afe593a6ee68df125beafca9bab04dd35de2ba808
[INFO] running `Command { std: "docker" "start" "-a" "9d26c254ed81f868fb82265afe593a6ee68df125beafca9bab04dd35de2ba808", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rust_pi_metronome v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `link`
[INFO] [stdout]  --> src/main.rs:7:13
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut link = lnk::init();
[INFO] [stdout]   |             ^^^^ help: if this is intentional, prefix it with an underscore: `_link`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/main.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut link = lnk::init();
[INFO] [stdout]   |         ----^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` 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 3.33s
[INFO] running `Command { std: "docker" "inspect" "9d26c254ed81f868fb82265afe593a6ee68df125beafca9bab04dd35de2ba808", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d26c254ed81f868fb82265afe593a6ee68df125beafca9bab04dd35de2ba808", kill_on_drop: false }`
[INFO] [stdout] 9d26c254ed81f868fb82265afe593a6ee68df125beafca9bab04dd35de2ba808
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d166da2681af26dae32e2f0d88b5c6664c6f66c2f365f56f58aad04449ccb371
[INFO] running `Command { std: "docker" "start" "-a" "d166da2681af26dae32e2f0d88b5c6664c6f66c2f365f56f58aad04449ccb371", 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] [stderr] warning: unused variable: `link`
[INFO] [stderr]  --> src/main.rs:7:13
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let mut link = lnk::init();
[INFO] [stderr]   |             ^^^^ help: if this is intentional, prefix it with an underscore: `_link`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/main.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let mut link = lnk::init();
[INFO] [stderr]   |         ----^^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_pi_metronome` (bin "rust_pi_metronome" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.31s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_pi_metronome-dc7cc729929649de)
[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" "d166da2681af26dae32e2f0d88b5c6664c6f66c2f365f56f58aad04449ccb371", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d166da2681af26dae32e2f0d88b5c6664c6f66c2f365f56f58aad04449ccb371", kill_on_drop: false }`
[INFO] [stdout] d166da2681af26dae32e2f0d88b5c6664c6f66c2f365f56f58aad04449ccb371