[INFO] fetching crate blackboard 1.1.0...
[INFO] checking blackboard-1.1.0 against try#9c1dcf141bc0875407c4eb36972857bd3db713e2 for pr-81863
[INFO] extracting crate blackboard 1.1.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate blackboard 1.1.0 on toolchain 9c1dcf141bc0875407c4eb36972857bd3db713e2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate blackboard 1.1.0
[INFO] finished tweaking crates.io crate blackboard 1.1.0
[INFO] tweaked toml for crates.io crate blackboard 1.1.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate blackboard 1.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 48fc1821bf082df941d08e4b7a174996547b8d862f8caebd2f2e387ce3268207
[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" "48fc1821bf082df941d08e4b7a174996547b8d862f8caebd2f2e387ce3268207", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "48fc1821bf082df941d08e4b7a174996547b8d862f8caebd2f2e387ce3268207", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48fc1821bf082df941d08e4b7a174996547b8d862f8caebd2f2e387ce3268207", kill_on_drop: false }`
[INFO] [stdout] 48fc1821bf082df941d08e4b7a174996547b8d862f8caebd2f2e387ce3268207
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1ff612c0794d023bbe56e5a5931434949ae606b3ddd1d9d65f213d4fde17766e
[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" "1ff612c0794d023bbe56e5a5931434949ae606b3ddd1d9d65f213d4fde17766e", kill_on_drop: false }`
[INFO] [stderr]     Checking blackboard v1.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0631]: type mismatch in function arguments
[INFO] [stdout]    --> src/lib.rs:159:30
[INFO] [stdout]     |
[INFO] [stdout] 155 |         fn change(_: &&str) {
[INFO] [stdout]     |         ------------------- found signature of `for<'r, 's> fn(&'r &'s str) -> _`
[INFO] [stdout] ...
[INFO] [stdout] 159 |         bb.subscribe("Park", change);
[INFO] [stdout]     |                              ^^^^^^ expected signature of `for<'r> fn(&'r mut &str) -> _`
[INFO] [stdout]     |
[INFO] [stdout]     = note: required because of the requirements on the impl of `Subscriptor<&str>` for `for<'r, 's> fn(&'r &'s str) {change}`
[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 E0631`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `blackboard`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "1ff612c0794d023bbe56e5a5931434949ae606b3ddd1d9d65f213d4fde17766e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ff612c0794d023bbe56e5a5931434949ae606b3ddd1d9d65f213d4fde17766e", kill_on_drop: false }`
[INFO] [stdout] 1ff612c0794d023bbe56e5a5931434949ae606b3ddd1d9d65f213d4fde17766e