[INFO] fetching crate cortex 0.1.5...
[INFO] checking cortex-0.1.5 against master#b0696a5160711c068cb1f01b7437db7990d15750 for pr-121848
[INFO] extracting crate cortex 0.1.5 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate cortex 0.1.5 on toolchain b0696a5160711c068cb1f01b7437db7990d15750
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "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-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 432579e5d083a8146d269c0678338cd27759720471ef86830a62fd07b4037427
[INFO] running `Command { std: "docker" "start" "-a" "432579e5d083a8146d269c0678338cd27759720471ef86830a62fd07b4037427", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "432579e5d083a8146d269c0678338cd27759720471ef86830a62fd07b4037427", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "432579e5d083a8146d269c0678338cd27759720471ef86830a62fd07b4037427", kill_on_drop: false }`
[INFO] [stdout] 432579e5d083a8146d269c0678338cd27759720471ef86830a62fd07b4037427
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5c120f60ae220c47e7585febe7fa270eef7b3a5f98baeda0e3e63cd07f11f453
[INFO] running `Command { std: "docker" "start" "-a" "5c120f60ae220c47e7585febe7fa270eef7b3a5f98baeda0e3e63cd07f11f453", 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:24:37
[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 an implicit `Sized` 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 the implicit `Sized` requirement on this type parameter 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[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 an implicit `Sized` 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 the implicit `Sized` requirement on this type parameter 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] warning: unused variable: `cortex`
[INFO] [stdout]   --> src/cortex/mod.rs:24:25
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn register(&mut self, cortex: Box<Cortex<T, Self>>) { }
[INFO] [stdout]    |                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_cortex`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cortex`
[INFO] [stdout]   --> src/cortex/mod.rs:24:25
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn register(&mut self, cortex: Box<Cortex<T, Self>>) { }
[INFO] [stdout]    |                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_cortex`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error; 1 warning emitted
[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` (lib) due to 2 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `cortex` (lib test) due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "5c120f60ae220c47e7585febe7fa270eef7b3a5f98baeda0e3e63cd07f11f453", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c120f60ae220c47e7585febe7fa270eef7b3a5f98baeda0e3e63cd07f11f453", kill_on_drop: false }`
[INFO] [stdout] 5c120f60ae220c47e7585febe7fa270eef7b3a5f98baeda0e3e63cd07f11f453
