[INFO] fetching crate zerogc-context 0.2.0-alpha.3...
[INFO] testing zerogc-context-0.2.0-alpha.3 against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] extracting crate zerogc-context 0.2.0-alpha.3 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate zerogc-context 0.2.0-alpha.3 on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate zerogc-context 0.2.0-alpha.3
[INFO] finished tweaking crates.io crate zerogc-context 0.2.0-alpha.3
[INFO] tweaked toml for crates.io crate zerogc-context 0.2.0-alpha.3 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3486a8758350286405bb33663caf6859dcbbe8ec63565f3b198898b9eebbcdbc
[INFO] running `Command { std: "docker" "start" "-a" "3486a8758350286405bb33663caf6859dcbbe8ec63565f3b198898b9eebbcdbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3486a8758350286405bb33663caf6859dcbbe8ec63565f3b198898b9eebbcdbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3486a8758350286405bb33663caf6859dcbbe8ec63565f3b198898b9eebbcdbc", kill_on_drop: false }`
[INFO] [stdout] 3486a8758350286405bb33663caf6859dcbbe8ec63565f3b198898b9eebbcdbc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 565d9b62f935754b0bff0ce02da48a2cf3133496fe49739505c6c83e44dbdbba
[INFO] running `Command { std: "docker" "start" "-a" "565d9b62f935754b0bff0ce02da48a2cf3133496fe49739505c6c83e44dbdbba", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling smallvec v1.6.1
[INFO] [stderr]    Compiling slog v2.7.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling lock_api v0.4.4
[INFO] [stderr]    Compiling instant v0.1.10
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling zerogc-derive v0.2.0-alpha.4
[INFO] [stderr]    Compiling zerogc v0.2.0-alpha.4
[INFO] [stderr]    Compiling zerogc-context v0.2.0-alpha.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `zerogc::GcRef`
[INFO] [stdout]   --> src/collector.rs:11:14
[INFO] [stdout]    |
[INFO] [stdout] 11 | use zerogc::{GcRef, GcSafe, GcSystem, Trace, GcSimpleAlloc, NullTrace, TraceImmutable, GcVisitor};
[INFO] [stdout]    |              ^^^^^ no `GcRef` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `crate::GcRef`
[INFO] [stdout]   --> src/handle.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 | use crate::{GcRef, WeakCollectorRef, CollectorId, CollectorContext, CollectorRef, CollectionManager};
[INFO] [stdout]    |             ^^^^^ no `GcRef` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0437]: type `Gc` is not a member of trait `GcSimpleAlloc`
[INFO] [stdout]    --> src/collector.rs:332:5
[INFO] [stdout]     |
[INFO] [stdout] 332 |     type Gc = C::Gc;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^ not a member of trait `GcSimpleAlloc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0437]: type `Gc` is not a member of trait `GcBindHandle`
[INFO] [stdout]    --> src/handle.rs:449:5
[INFO] [stdout]     |
[INFO] [stdout] 449 |     type Gc = C::Gc;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^ not a member of trait `GcBindHandle`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0437]: type `Gc` is not a member of trait `GcHandleSystem`
[INFO] [stdout]    --> src/handle.rs:612:5
[INFO] [stdout]     |
[INFO] [stdout] 612 |     type Gc = C::Gc;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^ not a member of trait `GcHandleSystem`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0107]: this trait takes 0 lifetime arguments but 1 lifetime argument was supplied
[INFO] [stdout]    --> src/collector.rs:330:24
[INFO] [stdout]     |
[INFO] [stdout] 330 | unsafe impl<'gc, T, C> GcSimpleAlloc<'gc, T> for CollectorContext<C>
[INFO] [stdout]     |                        ^^^^^^^^^^^^^ --- help: remove this lifetime argument
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        expected 0 lifetime arguments
[INFO] [stdout]     |
[INFO] [stdout] note: trait defined here, with 0 lifetime parameters
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/zerogc-0.2.0-alpha.4/src/lib.rs:419:18
[INFO] [stdout]     |
[INFO] [stdout] 419 | pub unsafe trait GcSimpleAlloc: GcContext {
[INFO] [stdout]     |                  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0107]: this trait takes 0 generic arguments but 1 generic argument was supplied
[INFO] [stdout]    --> src/collector.rs:330:24
[INFO] [stdout]     |
[INFO] [stdout] 330 | unsafe impl<'gc, T, C> GcSimpleAlloc<'gc, T> for CollectorContext<C>
[INFO] [stdout]     |                        ^^^^^^^^^^^^^      - help: remove this generic argument
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        expected 0 generic arguments
[INFO] [stdout]     |
[INFO] [stdout] note: trait defined here, with 0 generic parameters
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/zerogc-0.2.0-alpha.4/src/lib.rs:419:18
[INFO] [stdout]     |
[INFO] [stdout] 419 | pub unsafe trait GcSimpleAlloc: GcContext {
[INFO] [stdout]     |                  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 7 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0107, E0432, E0437.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0107`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `zerogc-context`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "565d9b62f935754b0bff0ce02da48a2cf3133496fe49739505c6c83e44dbdbba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "565d9b62f935754b0bff0ce02da48a2cf3133496fe49739505c6c83e44dbdbba", kill_on_drop: false }`
[INFO] [stdout] 565d9b62f935754b0bff0ce02da48a2cf3133496fe49739505c6c83e44dbdbba