[INFO] updating cached repository lhess/wtf-btn
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/lhess/wtf-btn
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/lhess/wtf-btn" "work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/lhess/wtf-btn"`
[INFO] [stderr] Cloning into 'work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/lhess/wtf-btn'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/lhess/wtf-btn" "work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/lhess/wtf-btn"`
[INFO] [stderr] Cloning into 'work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/lhess/wtf-btn'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a5615e1d0c4116c4d7e9cdaf26a6579ee5e51e92
[INFO] sha for GitHub repo lhess/wtf-btn: a5615e1d0c4116c4d7e9cdaf26a6579ee5e51e92
[INFO] validating manifest of lhess/wtf-btn on toolchain master#5f9c0448dde167128d668da4555879f64e56af1d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of lhess/wtf-btn on toolchain try#8ec8125bea94852768b56958f05da47666c21ab0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing lhess/wtf-btn
[INFO] finished frobbing lhess/wtf-btn
[INFO] frobbed toml for lhess/wtf-btn written to work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/lhess/wtf-btn/Cargo.toml
[INFO] started frobbing lhess/wtf-btn
[INFO] finished frobbing lhess/wtf-btn
[INFO] frobbed toml for lhess/wtf-btn written to work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/lhess/wtf-btn/Cargo.toml
[INFO] crate lhess/wtf-btn already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking lhess/wtf-btn against master#5f9c0448dde167128d668da4555879f64e56af1d for pr-62133
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62133/worker-4/master#5f9c0448dde167128d668da4555879f64e56af1d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/lhess/wtf-btn:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] f22456fffc88c7962de1c621ad0beadcca8a800f3fb47b893ca8bf4d0d8e3949
[INFO] running `"docker" "start" "-a" "f22456fffc88c7962de1c621ad0beadcca8a800f3fb47b893ca8bf4d0d8e3949"`
[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/crater/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 6.08s
[INFO] running `"docker" "inspect" "f22456fffc88c7962de1c621ad0beadcca8a800f3fb47b893ca8bf4d0d8e3949"`
[INFO] running `"docker" "rm" "-f" "f22456fffc88c7962de1c621ad0beadcca8a800f3fb47b893ca8bf4d0d8e3949"`
[INFO] [stdout] f22456fffc88c7962de1c621ad0beadcca8a800f3fb47b893ca8bf4d0d8e3949