[INFO] crate cortex 0.1.5 is already in cache
[INFO] testing cortex-0.1.5 against 1.44.0 for beta-1.45-1
[INFO] extracting crate cortex 0.1.5 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate cortex 0.1.5 on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-3/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stdout] de0da682af690d4264e2cee1b03d8471ccf16796f552c45e21ab038fcc7ea00c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "de0da682af690d4264e2cee1b03d8471ccf16796f552c45e21ab038fcc7ea00c"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling cortex v0.1.5 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0277]: the size for values of type `Self` cannot be known at compilation time
[INFO] [stderr]   --> src/cortex/mod.rs:24:33
[INFO] [stderr]    |
[INFO] [stderr] 4  | pub struct Cortex<T: Debug, X: Observer<T>> {
[INFO] [stderr]    |                             - required by this bound in `cortex::Cortex`
[INFO] [stderr] ...
[INFO] [stderr] 24 |     fn register(&mut self, cortex: Box<Cortex<T, Self>>) { }
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^^^^^^ - help: consider further restricting `Self`: `where Self: std::marker::Sized`
[INFO] [stderr]    |                                    |
[INFO] [stderr]    |                                    doesn't have a size known at compile-time
[INFO] [stderr]    |
[INFO] [stderr]    = help: the trait `std::marker::Sized` is not implemented for `Self`
[INFO] [stderr]    = note: to learn more, visit <https://doc.rust-lang.org/book/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait>
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0277`.
[INFO] [stderr] error: could not compile `cortex`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "de0da682af690d4264e2cee1b03d8471ccf16796f552c45e21ab038fcc7ea00c"`
[INFO] running `"docker" "rm" "-f" "de0da682af690d4264e2cee1b03d8471ccf16796f552c45e21ab038fcc7ea00c"`
[INFO] [stdout] de0da682af690d4264e2cee1b03d8471ccf16796f552c45e21ab038fcc7ea00c