[INFO] cloning repository https://github.com/abusch/xld-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/abusch/xld-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fabusch%2Fxld-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fabusch%2Fxld-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c7f791d1865f62b51ae140c844ca1e25c7180c9a
[INFO] checking abusch/xld-rs against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fabusch%2Fxld-rs" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/abusch/xld-rs on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/abusch/xld-rs
[INFO] finished tweaking git repo https://github.com/abusch/xld-rs
[INFO] tweaked toml for git repo https://github.com/abusch/xld-rs written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/abusch/xld-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0005091648b76cccad89c4365c7fb3b6ddfa450442db15156d072f1bbc201045
[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" "0005091648b76cccad89c4365c7fb3b6ddfa450442db15156d072f1bbc201045", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0005091648b76cccad89c4365c7fb3b6ddfa450442db15156d072f1bbc201045", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0005091648b76cccad89c4365c7fb3b6ddfa450442db15156d072f1bbc201045", kill_on_drop: false }`
[INFO] [stdout] 0005091648b76cccad89c4365c7fb3b6ddfa450442db15156d072f1bbc201045
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3a0b1d503c86e5ecea47b0bb827f07f4ef8aa72621952b8a5849454f701da51a
[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" "3a0b1d503c86e5ecea47b0bb827f07f4ef8aa72621952b8a5849454f701da51a", 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] [stderr]     Checking libc v0.2.42
[INFO] [stderr]    Compiling cc v1.0.17
[INFO] [stderr]     Checking rustc-demangle v0.1.8
[INFO] [stderr]     Checking cfg-if v0.1.4
[INFO] [stderr]     Checking bitflags v1.0.3
[INFO] [stderr]    Compiling x11 v2.18.0
[INFO] [stderr]    Compiling failure_derive v0.1.1
[INFO] [stderr]     Checking atty v0.2.10
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.23
[INFO] [stderr]     Checking backtrace v0.3.9
[INFO] [stderr]     Checking failure v0.1.1
[INFO] [stderr]     Checking xld-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `dpi`
[INFO] [stdout]   --> src/xrandrutils.rs:15:68
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn render_xrandr_command(outputs: &[Output], primary: &Output, dpi: u32) -> Command {
[INFO] [stdout]    |                                                                    ^^^ help: if this is intentional, prefix it with an underscore: `_dpi`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dpi`
[INFO] [stdout]   --> src/xrandrutils.rs:15:68
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn render_xrandr_command(outputs: &[Output], primary: &Output, dpi: u32) -> Command {
[INFO] [stdout]    |                                                                    ^^^ help: if this is intentional, prefix it with an underscore: `_dpi`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.15s
[INFO] running `Command { std: "docker" "inspect" "3a0b1d503c86e5ecea47b0bb827f07f4ef8aa72621952b8a5849454f701da51a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a0b1d503c86e5ecea47b0bb827f07f4ef8aa72621952b8a5849454f701da51a", kill_on_drop: false }`
[INFO] [stdout] 3a0b1d503c86e5ecea47b0bb827f07f4ef8aa72621952b8a5849454f701da51a