[INFO] fetching crate winflip 0.1.0...
[INFO] checking winflip-0.1.0 against try#a243773eaf3fedcd203f10ae4579e4f106bf7ccd for pr-68325
[INFO] extracting crate winflip 0.1.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate winflip 0.1.0 on toolchain a243773eaf3fedcd203f10ae4579e4f106bf7ccd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+a243773eaf3fedcd203f10ae4579e4f106bf7ccd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate winflip 0.1.0
[INFO] finished tweaking crates.io crate winflip 0.1.0
[INFO] tweaked toml for crates.io crate winflip 0.1.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate winflip 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+a243773eaf3fedcd203f10ae4579e4f106bf7ccd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+a243773eaf3fedcd203f10ae4579e4f106bf7ccd" "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] cd049bca294cc66084d815f88c50646c7da981479f7ec5127a8d93d7c84ccbcf
[INFO] running `"docker" "start" "-a" "cd049bca294cc66084d815f88c50646c7da981479f7ec5127a8d93d7c84ccbcf"`
[INFO] [stderr]     Checking x11-dl v2.18.4
[INFO] [stderr]     Checking winflip v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `window_title`
[INFO] [stderr]    --> src/x11.rs:367:13
[INFO] [stderr]     |
[INFO] [stderr] 367 |         let window_title: *const raw::c_char = ffi::CString::new(title).unwrap().as_ptr();
[INFO] [stderr]     |             ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_window_title`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `window_title`
[INFO] [stderr]    --> src/x11.rs:367:13
[INFO] [stderr]     |
[INFO] [stderr] 367 |         let window_title: *const raw::c_char = ffi::CString::new(title).unwrap().as_ptr();
[INFO] [stderr]     |             ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_window_title`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `xl`
[INFO] [stderr]     --> src/x11.rs:1021:13
[INFO] [stderr]      |
[INFO] [stderr] 1021 |         let xl = xlib::Xlib::open().unwrap();
[INFO] [stderr]      |             ^^ help: consider prefixing with an underscore: `_xl`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `glx`
[INFO] [stderr]     --> src/x11.rs:1027:13
[INFO] [stderr]      |
[INFO] [stderr] 1027 |         let glx = glx::Glx::open().unwrap();
[INFO] [stderr]      |             ^^^ help: consider prefixing with an underscore: `_glx`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.43s
[INFO] running `"docker" "inspect" "cd049bca294cc66084d815f88c50646c7da981479f7ec5127a8d93d7c84ccbcf"`
[INFO] running `"docker" "rm" "-f" "cd049bca294cc66084d815f88c50646c7da981479f7ec5127a8d93d7c84ccbcf"`
[INFO] [stdout] cd049bca294cc66084d815f88c50646c7da981479f7ec5127a8d93d7c84ccbcf