[INFO] fetching crate penrose 0.1.8...
[INFO] checking penrose-0.1.8 against try#ffa4a0215752773248fb0f0a8092f1c3e7907e9e for pr-75585
[INFO] extracting crate penrose 0.1.8 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate penrose 0.1.8 on toolchain ffa4a0215752773248fb0f0a8092f1c3e7907e9e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate penrose 0.1.8
[INFO] finished tweaking crates.io crate penrose 0.1.8
[INFO] tweaked toml for crates.io crate penrose 0.1.8 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate penrose 0.1.8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] da85ed6f0f75cd9e6fe6f44904dfa4f938104eca48b859be801cf17580a4c78a
[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" "da85ed6f0f75cd9e6fe6f44904dfa4f938104eca48b859be801cf17580a4c78a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "da85ed6f0f75cd9e6fe6f44904dfa4f938104eca48b859be801cf17580a4c78a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da85ed6f0f75cd9e6fe6f44904dfa4f938104eca48b859be801cf17580a4c78a", kill_on_drop: false }`
[INFO] [stdout] da85ed6f0f75cd9e6fe6f44904dfa4f938104eca48b859be801cf17580a4c78a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 41a19e7a9c5acdfb7186936378751141b0c1495ea070d35d0cd8720a25c6960e
[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" "41a19e7a9c5acdfb7186936378751141b0c1495ea070d35d0cd8720a25c6960e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.73
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]    Compiling xcb v0.9.0
[INFO] [stderr]     Checking chrono v0.4.13
[INFO] [stderr]     Checking simplelog v0.8.0
[INFO] [stderr]     Checking penrose v0.1.8 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0053]: method `new_client` has an incompatible type for trait
[INFO] [stdout]   --> tests/hook_tests.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn new_client(&mut self, _: &mut WindowManager, c: Client) -> Option<Client> {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `&mut penrose::client::Client`, found struct `penrose::client::Client`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected fn pointer `fn(&mut TestHook, &mut penrose::WindowManager<'_>, &mut penrose::client::Client)`
[INFO] [stdout]               found fn pointer `fn(&mut TestHook, &mut penrose::WindowManager<'_>, penrose::client::Client) -> std::option::Option<penrose::client::Client>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0053`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `penrose`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "41a19e7a9c5acdfb7186936378751141b0c1495ea070d35d0cd8720a25c6960e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41a19e7a9c5acdfb7186936378751141b0c1495ea070d35d0cd8720a25c6960e", kill_on_drop: false }`
[INFO] [stdout] 41a19e7a9c5acdfb7186936378751141b0c1495ea070d35d0cd8720a25c6960e