[INFO] fetching crate emplacable 0.1.0-alpha.16...
[INFO] testing emplacable-0.1.0-alpha.16 against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] extracting crate emplacable 0.1.0-alpha.16 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate emplacable 0.1.0-alpha.16
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate emplacable 0.1.0-alpha.16
[INFO] tweaked toml for crates.io crate emplacable 0.1.0-alpha.16 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate emplacable 0.1.0-alpha.16 on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate emplacable 0.1.0-alpha.16 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e8720495acd21c366703295fd1b32ae693aec4093bb37cabcbfc45e64b721070
[INFO] running `Command { std: "docker" "start" "-a" "e8720495acd21c366703295fd1b32ae693aec4093bb37cabcbfc45e64b721070", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e8720495acd21c366703295fd1b32ae693aec4093bb37cabcbfc45e64b721070", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8720495acd21c366703295fd1b32ae693aec4093bb37cabcbfc45e64b721070", kill_on_drop: false }`
[INFO] [stdout] e8720495acd21c366703295fd1b32ae693aec4093bb37cabcbfc45e64b721070
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ab839bb22d3c0859b5874ed66584e60e896dbe9462b5b9cd6eb71bac69aaac80
[INFO] running `Command { std: "docker" "start" "-a" "ab839bb22d3c0859b5874ed66584e60e896dbe9462b5b9cd6eb71bac69aaac80", kill_on_drop: false }`
[INFO] [stderr]    Compiling emplacable v0.1.0-alpha.16 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]     --> src/lib.rs:1252:90
[INFO] [stdout]      |
[INFO] [stdout] 1252 | pub type EmplacerFn<'a, T> = dyn for<'b> FnMut(Layout, <T as Pointee>::Metadata, &'b mut (dyn FnMut(*mut PhantomData<T>)))
[INFO] [stdout]      |                                                                                          ^                              ^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1252 - pub type EmplacerFn<'a, T> = dyn for<'b> FnMut(Layout, <T as Pointee>::Metadata, &'b mut (dyn FnMut(*mut PhantomData<T>)))
[INFO] [stdout] 1252 + pub type EmplacerFn<'a, T> = dyn for<'b> FnMut(Layout, <T as Pointee>::Metadata, &'b mut dyn FnMut(*mut PhantomData<T>))
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unconstrained opaque type
[INFO] [stdout]    --> src/lib.rs:309:56
[INFO] [stdout]     |
[INFO] [stdout] 309 |     pub type WithEmplacableForFn<'a, T: ?Sized + 'a> = impl EmplacableFn<T> + 'a;
[INFO] [stdout]     |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `WithEmplacableForFn` must be used in combination with a concrete type within the same crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/lib.rs:312:9
[INFO] [stdout]     |
[INFO] [stdout] 309 |       pub type WithEmplacableForFn<'a, T: ?Sized + 'a> = impl EmplacableFn<T> + 'a;
[INFO] [stdout]     |                                                          ------------------------- the expected opaque type
[INFO] [stdout] 310 |
[INFO] [stdout] 311 |       pub fn with_emplacable_closure<T: ?Sized>(val: &mut T) -> WithEmplacableForFn<'_, T> {
[INFO] [stdout]     |                                                                 -------------------------- expected `WithEmplacableForFn<'_, T>` because of return type
[INFO] [stdout] 312 | /         move |emplacer: &mut Emplacer<'_, T>| {
[INFO] [stdout] 313 | |             let layout = Layout::for_value(val);
[INFO] [stdout] 314 | |             let metadata = ptr::metadata(val);
[INFO] [stdout] ...   |
[INFO] [stdout] 333 | |             });
[INFO] [stdout] 334 | |         }
[INFO] [stdout]     | |_________^ expected opaque type, found closure
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected opaque type `WithEmplacableForFn<'_, T>`
[INFO] [stdout]                    found closure `{closure@src/lib.rs:312:9: 312:46}`
[INFO] [stdout] note: this item must have a `#[define_opaque(WithEmplacableForFn)]` attribute to be able to define hidden types
[INFO] [stdout]    --> src/lib.rs:311:12
[INFO] [stdout]     |
[INFO] [stdout] 311 |     pub fn with_emplacable_closure<T: ?Sized>(val: &mut T) -> WithEmplacableForFn<'_, T> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `emplacable` (lib) due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "ab839bb22d3c0859b5874ed66584e60e896dbe9462b5b9cd6eb71bac69aaac80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab839bb22d3c0859b5874ed66584e60e896dbe9462b5b9cd6eb71bac69aaac80", kill_on_drop: false }`
[INFO] [stdout] ab839bb22d3c0859b5874ed66584e60e896dbe9462b5b9cd6eb71bac69aaac80