[INFO] cloning repository https://github.com/luukvanderduim/xcb-global-hotkey-example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/luukvanderduim/xcb-global-hotkey-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluukvanderduim%2Fxcb-global-hotkey-example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluukvanderduim%2Fxcb-global-hotkey-example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 83840709674b27388ab3207532217a332e12b5b5
[INFO] checking luukvanderduim/xcb-global-hotkey-example against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluukvanderduim%2Fxcb-global-hotkey-example" "/workspace/builds/worker-66/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-66/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/luukvanderduim/xcb-global-hotkey-example on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/luukvanderduim/xcb-global-hotkey-example
[INFO] finished tweaking git repo https://github.com/luukvanderduim/xcb-global-hotkey-example
[INFO] tweaked toml for git repo https://github.com/luukvanderduim/xcb-global-hotkey-example written to /workspace/builds/worker-66/source/Cargo.toml
[INFO] crate git repo https://github.com/luukvanderduim/xcb-global-hotkey-example already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c4d7c5c3d133e4b250c1b14945de4147d849d006fb3ee6adc6f8dc3fcabc6055
[INFO] running `Command { std: "docker" "start" "-a" "c4d7c5c3d133e4b250c1b14945de4147d849d006fb3ee6adc6f8dc3fcabc6055", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c4d7c5c3d133e4b250c1b14945de4147d849d006fb3ee6adc6f8dc3fcabc6055", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4d7c5c3d133e4b250c1b14945de4147d849d006fb3ee6adc6f8dc3fcabc6055", kill_on_drop: false }`
[INFO] [stdout] c4d7c5c3d133e4b250c1b14945de4147d849d006fb3ee6adc6f8dc3fcabc6055
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3c1c37633f67cdc51e78f763e49f25298c4a3de120271d107f79ff8f9f28601c
[INFO] running `Command { std: "docker" "start" "-a" "3c1c37633f67cdc51e78f763e49f25298c4a3de120271d107f79ff8f9f28601c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking gethostname v0.2.1
[INFO] [stderr]     Checking x11rb v0.7.0
[INFO] [stderr]     Checking global-hotkey-example v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ModMask`
[INFO] [stdout]  --> src/main.rs:6:91
[INFO] [stdout]   |
[INFO] [stdout] 6 |         xproto::{grab_key, ConnectionExt, ChangeWindowAttributesAux, EventMask, GrabMode, ModMask, Setup},
[INFO] [stdout]   |                                                                                           ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/main.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     &mut conn.change_window_attributes(rootwindow, &kpress)?;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let _ = &mut conn.change_window_attributes(rootwindow, &kpress)?;
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/main.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     &conn.flush()?;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let _ = &conn.flush()?;
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ModMask`
[INFO] [stdout]  --> src/main.rs:6:91
[INFO] [stdout]   |
[INFO] [stdout] 6 |         xproto::{grab_key, ConnectionExt, ChangeWindowAttributesAux, EventMask, GrabMode, ModMask, Setup},
[INFO] [stdout]   |                                                                                           ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/main.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     &mut conn.change_window_attributes(rootwindow, &kpress)?;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let _ = &mut conn.change_window_attributes(rootwindow, &kpress)?;
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/main.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     &conn.flush()?;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let _ = &conn.flush()?;
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.39s
[INFO] running `Command { std: "docker" "inspect" "3c1c37633f67cdc51e78f763e49f25298c4a3de120271d107f79ff8f9f28601c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c1c37633f67cdc51e78f763e49f25298c4a3de120271d107f79ff8f9f28601c", kill_on_drop: false }`
[INFO] [stdout] 3c1c37633f67cdc51e78f763e49f25298c4a3de120271d107f79ff8f9f28601c