[INFO] updating cached repository https://github.com/dafyddcrosby/dcled-rust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] efbeab8ed99deee89e1f8d508c9654568af2f9a9
[INFO] checking dafyddcrosby/dcled-rust against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdafyddcrosby%2Fdcled-rust" "/workspace/builds/worker-9/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dafyddcrosby/dcled-rust on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/dafyddcrosby/dcled-rust
[INFO] finished tweaking git repo https://github.com/dafyddcrosby/dcled-rust
[INFO] tweaked toml for git repo https://github.com/dafyddcrosby/dcled-rust written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/dafyddcrosby/dcled-rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 675609923c10511c94a63c208ffd0679b9f76d0425fe172bc960142fa0f0364e
[INFO] running `"docker" "start" "-a" "675609923c10511c94a63c208ffd0679b9f76d0425fe172bc960142fa0f0364e"`
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]    Compiling libusb-sys v0.2.3
[INFO] [stderr]     Checking bit-set v0.2.0
[INFO] [stderr]     Checking libusb v0.3.0
[INFO] [stderr]     Checking dcled v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::thread::sleep`
[INFO] [stderr]  --> src/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::thread::sleep;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::thread::sleep`
[INFO] [stderr]  --> src/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::thread::sleep;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `data1`
[INFO] [stderr]   --> src/main.rs:59:37
[INFO] [stderr]    |
[INFO] [stderr] 59 |     fn new(brightness: u8, row: u8, data1: &Row, data2: &Row) -> USBPacket {
[INFO] [stderr]    |                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_data1`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `data2`
[INFO] [stderr]   --> src/main.rs:59:50
[INFO] [stderr]    |
[INFO] [stderr] 59 |     fn new(brightness: u8, row: u8, data1: &Row, data2: &Row) -> USBPacket {
[INFO] [stderr]    |                                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_data2`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `brightness`
[INFO] [stderr]   --> src/main.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     brightness: u8,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `data1`
[INFO] [stderr]   --> src/main.rs:59:37
[INFO] [stderr]    |
[INFO] [stderr] 59 |     fn new(brightness: u8, row: u8, data1: &Row, data2: &Row) -> USBPacket {
[INFO] [stderr]    |                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_data1`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `data2`
[INFO] [stderr]   --> src/main.rs:59:50
[INFO] [stderr]    |
[INFO] [stderr] 59 |     fn new(brightness: u8, row: u8, data1: &Row, data2: &Row) -> USBPacket {
[INFO] [stderr]    |                                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_data2`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `brightness`
[INFO] [stderr]   --> src/main.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     brightness: u8,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.42s
[INFO] running `"docker" "inspect" "675609923c10511c94a63c208ffd0679b9f76d0425fe172bc960142fa0f0364e"`
[INFO] running `"docker" "rm" "-f" "675609923c10511c94a63c208ffd0679b9f76d0425fe172bc960142fa0f0364e"`
[INFO] [stdout] 675609923c10511c94a63c208ffd0679b9f76d0425fe172bc960142fa0f0364e