[INFO] fetching crate cortex 0.1.5...
[INFO] testing cortex-0.1.5 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate cortex 0.1.5 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate cortex 0.1.5 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 006e7c15df0fcf8de61147f6d49d18e36f1b0ad6a013abda533564e9babe4268
[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" "006e7c15df0fcf8de61147f6d49d18e36f1b0ad6a013abda533564e9babe4268", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "006e7c15df0fcf8de61147f6d49d18e36f1b0ad6a013abda533564e9babe4268", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "006e7c15df0fcf8de61147f6d49d18e36f1b0ad6a013abda533564e9babe4268", kill_on_drop: false }`
[INFO] [stdout] 006e7c15df0fcf8de61147f6d49d18e36f1b0ad6a013abda533564e9babe4268
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d440777ba49d4bf4ae2bfabf4e75d682b46373af52c7f386a6efd20060c92bc1
[INFO] running `Command { std: "docker" "start" "-a" "d440777ba49d4bf4ae2bfabf4e75d682b46373af52c7f386a6efd20060c92bc1", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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:24:37
[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] note: required by a bound in `Cortex`
[INFO] [stdout]   --> src/cortex/mod.rs:4:29
[INFO] [stdout]    |
[INFO] [stdout] 4  | pub struct Cortex<T: Debug, X: Observer<T>> {
[INFO] [stdout]    |                             ^ required by this bound in `Cortex`
[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` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "d440777ba49d4bf4ae2bfabf4e75d682b46373af52c7f386a6efd20060c92bc1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d440777ba49d4bf4ae2bfabf4e75d682b46373af52c7f386a6efd20060c92bc1", kill_on_drop: false }`
[INFO] [stdout] d440777ba49d4bf4ae2bfabf4e75d682b46373af52c7f386a6efd20060c92bc1