[INFO] updating cached repository https://github.com/lhess/wtf-btn
[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] a5615e1d0c4116c4d7e9cdaf26a6579ee5e51e92
[INFO] checking lhess/wtf-btn against master#73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de for pr-68325
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flhess%2Fwtf-btn" "/workspace/builds/worker-14/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lhess/wtf-btn on toolchain 73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de
[INFO] running `"/workspace/cargo-home/bin/cargo" "+73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/lhess/wtf-btn
[INFO] finished tweaking git repo https://github.com/lhess/wtf-btn
[INFO] tweaked toml for git repo https://github.com/lhess/wtf-btn written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/lhess/wtf-btn already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de" "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-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de" "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] fed3693a07aa51853ba56afa3b6aeb7c05fb5e12d8d74c87951b1fdabab3019c
[INFO] running `"docker" "start" "-a" "fed3693a07aa51853ba56afa3b6aeb7c05fb5e12d8d74c87951b1fdabab3019c"`
[INFO] [stderr]     Checking spin_sleep v0.3.5
[INFO] [stderr]    Compiling wiringpi v0.2.4
[INFO] [stderr]     Checking nix v0.9.0
[INFO] [stderr]     Checking ctrlc v3.1.0
[INFO] [stderr]     Checking wtf-btn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::iter::Enumerate`
[INFO] [stderr]  --> src/display.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::iter::Enumerate;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::slice::Iter`
[INFO] [stderr]  --> src/display.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::slice::Iter;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::iter::Enumerate`
[INFO] [stderr]  --> src/display.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::iter::Enumerate;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::slice::Iter`
[INFO] [stderr]  --> src/display.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::slice::Iter;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.44s
[INFO] running `"docker" "inspect" "fed3693a07aa51853ba56afa3b6aeb7c05fb5e12d8d74c87951b1fdabab3019c"`
[INFO] running `"docker" "rm" "-f" "fed3693a07aa51853ba56afa3b6aeb7c05fb5e12d8d74c87951b1fdabab3019c"`
[INFO] [stdout] fed3693a07aa51853ba56afa3b6aeb7c05fb5e12d8d74c87951b1fdabab3019c