[INFO] fetching crate winflip 0.1.0...
[INFO] checking winflip-0.1.0 against master#430feb24a46993e5073c1bb1b39da190d83fa2bf for pr-78363
[INFO] extracting crate winflip 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate winflip 0.1.0 on toolchain 430feb24a46993e5073c1bb1b39da190d83fa2bf
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-6/source/Cargo.toml
[INFO] crate crates.io crate winflip 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d7ba0bdc75d2624054c1d00442c7e84e7d38f27c1e9bfe9cd917df4510aa9791
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d7ba0bdc75d2624054c1d00442c7e84e7d38f27c1e9bfe9cd917df4510aa9791", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d7ba0bdc75d2624054c1d00442c7e84e7d38f27c1e9bfe9cd917df4510aa9791", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7ba0bdc75d2624054c1d00442c7e84e7d38f27c1e9bfe9cd917df4510aa9791", kill_on_drop: false }`
[INFO] [stdout] d7ba0bdc75d2624054c1d00442c7e84e7d38f27c1e9bfe9cd917df4510aa9791
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=forbid" "-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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 30b9dc0cbfa009e4f3e299112241054ed4aba159f3362391bb11bed2100a41ac
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "30b9dc0cbfa009e4f3e299112241054ed4aba159f3362391bb11bed2100a41ac", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling x11-dl v2.18.4
[INFO] [stderr]     Checking winflip v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `window_title`
[INFO] [stdout]    --> src/x11.rs:367:13
[INFO] [stdout]     |
[INFO] [stdout] 367 |         let window_title: *const raw::c_char = ffi::CString::new(title).unwrap().as_ptr();
[INFO] [stdout]     |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_window_title`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `window_title`
[INFO] [stdout]    --> src/x11.rs:367:13
[INFO] [stdout]     |
[INFO] [stdout] 367 |         let window_title: *const raw::c_char = ffi::CString::new(title).unwrap().as_ptr();
[INFO] [stdout]     |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_window_title`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `xl`
[INFO] [stdout]     --> src/x11.rs:1021:13
[INFO] [stdout]      |
[INFO] [stdout] 1021 |         let xl = xlib::Xlib::open().unwrap();
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_xl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `glx`
[INFO] [stdout]     --> src/x11.rs:1027:13
[INFO] [stdout]      |
[INFO] [stdout] 1027 |         let glx = glx::Glx::open().unwrap();
[INFO] [stdout]      |             ^^^ help: if this is intentional, prefix it with an underscore: `_glx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.95s
[INFO] running `Command { std: "docker" "inspect" "30b9dc0cbfa009e4f3e299112241054ed4aba159f3362391bb11bed2100a41ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30b9dc0cbfa009e4f3e299112241054ed4aba159f3362391bb11bed2100a41ac", kill_on_drop: false }`
[INFO] [stdout] 30b9dc0cbfa009e4f3e299112241054ed4aba159f3362391bb11bed2100a41ac