[INFO] fetching crate cortex 0.1.5...
[INFO] checking cortex-0.1.5 against master#4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5 for pr-81174
[INFO] extracting crate cortex 0.1.5 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate cortex 0.1.5 on toolchain 4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cortex 0.1.5
[INFO] finished tweaking crates.io crate cortex 0.1.5
[INFO] tweaked toml for crates.io crate cortex 0.1.5 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "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" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0ca893419ef0baa1a9c3c296f84277cd827bc0472071914c2f3da1ac9fdda600
[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" "0ca893419ef0baa1a9c3c296f84277cd827bc0472071914c2f3da1ac9fdda600", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0ca893419ef0baa1a9c3c296f84277cd827bc0472071914c2f3da1ac9fdda600", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ca893419ef0baa1a9c3c296f84277cd827bc0472071914c2f3da1ac9fdda600", kill_on_drop: false }`
[INFO] [stdout] 0ca893419ef0baa1a9c3c296f84277cd827bc0472071914c2f3da1ac9fdda600
[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" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3c26a476980934925e6b7095a964f918946daedb28a662a874868002cf9f92f3
[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" "3c26a476980934925e6b7095a964f918946daedb28a662a874868002cf9f92f3", kill_on_drop: false }`
[INFO] [stderr]     Checking cortex v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0277]: the size for values of type `Self` cannot be known at compilation time
[INFO] [stdout]   --> src/cortex/mod.rs:24:33
[INFO] [stdout]    |
[INFO] [stdout] 4  | pub struct Cortex<T: Debug, X: Observer<T>> {
[INFO] [stdout]    |                             - required by this bound in `Cortex`
[INFO] [stdout] ...
[INFO] [stdout] 24 |     fn register(&mut self, cortex: Box<Cortex<T, Self>>) { }
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
[INFO] [stdout]    |
[INFO] [stdout] help: consider further restricting `Self`
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn register(&mut self, cortex: Box<Cortex<T, Self>>) where Self: Sized { }
[INFO] [stdout]    |                                                          ^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: consider relaxing the implicit `Sized` restriction
[INFO] [stdout]    |
[INFO] [stdout] 4  | pub struct Cortex<T: Debug, X: Observer<T> + ?Sized> {
[INFO] [stdout]    |                                            ^^^^^^^^
[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 E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cortex`
[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] [stdout] error[E0277]: the size for values of type `Self` cannot be known at compilation time
[INFO] [stdout]   --> src/cortex/mod.rs:24:33
[INFO] [stdout]    |
[INFO] [stdout] 4  | pub struct Cortex<T: Debug, X: Observer<T>> {
[INFO] [stdout]    |                             - required by this bound in `Cortex`
[INFO] [stdout] ...
[INFO] [stdout] 24 |     fn register(&mut self, cortex: Box<Cortex<T, Self>>) { }
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
[INFO] [stdout]    |
[INFO] [stdout] help: consider further restricting `Self`
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn register(&mut self, cortex: Box<Cortex<T, Self>>) where Self: Sized { }
[INFO] [stdout]    |                                                          ^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: consider relaxing the implicit `Sized` restriction
[INFO] [stdout]    |
[INFO] [stdout] 4  | pub struct Cortex<T: Debug, X: Observer<T> + ?Sized> {
[INFO] [stdout]    |                                            ^^^^^^^^
[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 E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "3c26a476980934925e6b7095a964f918946daedb28a662a874868002cf9f92f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c26a476980934925e6b7095a964f918946daedb28a662a874868002cf9f92f3", kill_on_drop: false }`
[INFO] [stdout] 3c26a476980934925e6b7095a964f918946daedb28a662a874868002cf9f92f3