[INFO] fetching crate ghost-gc 0.2.1...
[INFO] testing ghost-gc-0.2.1 against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] extracting crate ghost-gc 0.2.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate ghost-gc 0.2.1
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate ghost-gc 0.2.1
[INFO] tweaked toml for crates.io crate ghost-gc 0.2.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ghost-gc 0.2.1 on toolchain b83b707f97d809763b7861afa7638871f3339a33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate ghost-gc 0.2.1 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" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3da62d6305bc3a31711cfc0731621e46cb003d333a3684cb40589b836e80231a
[INFO] running `Command { std: "docker" "start" "-a" "3da62d6305bc3a31711cfc0731621e46cb003d333a3684cb40589b836e80231a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3da62d6305bc3a31711cfc0731621e46cb003d333a3684cb40589b836e80231a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3da62d6305bc3a31711cfc0731621e46cb003d333a3684cb40589b836e80231a", kill_on_drop: false }`
[INFO] [stdout] 3da62d6305bc3a31711cfc0731621e46cb003d333a3684cb40589b836e80231a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d437deb18ad62a41fcb6edeb8316094d20db3808a79a5106d229ebb42717dab5
[INFO] running `Command { std: "docker" "start" "-a" "d437deb18ad62a41fcb6edeb8316094d20db3808a79a5106d229ebb42717dab5", kill_on_drop: false }`
[INFO] [stderr]    Compiling ghost-gc v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique
[INFO] [stdout]  --> src/gc_vtable.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
[INFO] [stdout]   |                              --------- in this derive macro expansion
[INFO] [stdout] 7 | pub struct GcVTable {
[INFO] [stdout] 8 |     collect: unsafe fn(GcBox<Erased>, &Collector),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: the address of the same function can vary between different codegen units
[INFO] [stdout]   = note: furthermore, different functions could have the same address after being merged together
[INFO] [stdout]   = note: for more information visit <https://doc.rust-lang.org/nightly/core/ptr/fn.fn_addr_eq.html>
[INFO] [stdout]   = note: `#[warn(unpredictable_function_pointer_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique
[INFO] [stdout]  --> src/gc_vtable.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
[INFO] [stdout]   |                              --------- in this derive macro expansion
[INFO] [stdout] ...
[INFO] [stdout] 9 |     drop_in_place: unsafe fn(GcBox<Erased>),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: the address of the same function can vary between different codegen units
[INFO] [stdout]   = note: furthermore, different functions could have the same address after being merged together
[INFO] [stdout]   = note: for more information visit <https://doc.rust-lang.org/nightly/core/ptr/fn.fn_addr_eq.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "d437deb18ad62a41fcb6edeb8316094d20db3808a79a5106d229ebb42717dab5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d437deb18ad62a41fcb6edeb8316094d20db3808a79a5106d229ebb42717dab5", kill_on_drop: false }`
[INFO] [stdout] d437deb18ad62a41fcb6edeb8316094d20db3808a79a5106d229ebb42717dab5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4c74d531f7641efc154bfb55952c9b7adfb4f0ef6e7b5dbed6ab33fe313388fb
[INFO] running `Command { std: "docker" "start" "-a" "4c74d531f7641efc154bfb55952c9b7adfb4f0ef6e7b5dbed6ab33fe313388fb", kill_on_drop: false }`
[INFO] [stderr]    Compiling ghost-gc v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique
[INFO] [stdout]  --> src/gc_vtable.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
[INFO] [stdout]   |                              --------- in this derive macro expansion
[INFO] [stdout] 7 | pub struct GcVTable {
[INFO] [stdout] 8 |     collect: unsafe fn(GcBox<Erased>, &Collector),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: the address of the same function can vary between different codegen units
[INFO] [stdout]   = note: furthermore, different functions could have the same address after being merged together
[INFO] [stdout]   = note: for more information visit <https://doc.rust-lang.org/nightly/core/ptr/fn.fn_addr_eq.html>
[INFO] [stdout]   = note: `#[warn(unpredictable_function_pointer_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique
[INFO] [stdout]  --> src/gc_vtable.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
[INFO] [stdout]   |                              --------- in this derive macro expansion
[INFO] [stdout] ...
[INFO] [stdout] 9 |     drop_in_place: unsafe fn(GcBox<Erased>),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: the address of the same function can vary between different codegen units
[INFO] [stdout]   = note: furthermore, different functions could have the same address after being merged together
[INFO] [stdout]   = note: for more information visit <https://doc.rust-lang.org/nightly/core/ptr/fn.fn_addr_eq.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique
[INFO] [stdout]  --> src/gc_vtable.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
[INFO] [stdout]   |                              --------- in this derive macro expansion
[INFO] [stdout] 7 | pub struct GcVTable {
[INFO] [stdout] 8 |     collect: unsafe fn(GcBox<Erased>, &Collector),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: the address of the same function can vary between different codegen units
[INFO] [stdout]   = note: furthermore, different functions could have the same address after being merged together
[INFO] [stdout]   = note: for more information visit <https://doc.rust-lang.org/nightly/core/ptr/fn.fn_addr_eq.html>
[INFO] [stdout]   = note: `#[warn(unpredictable_function_pointer_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique
[INFO] [stdout]  --> src/gc_vtable.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
[INFO] [stdout]   |                              --------- in this derive macro expansion
[INFO] [stdout] ...
[INFO] [stdout] 9 |     drop_in_place: unsafe fn(GcBox<Erased>),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: the address of the same function can vary between different codegen units
[INFO] [stdout]   = note: furthermore, different functions could have the same address after being merged together
[INFO] [stdout]   = note: for more information visit <https://doc.rust-lang.org/nightly/core/ptr/fn.fn_addr_eq.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `Command { std: "docker" "inspect" "4c74d531f7641efc154bfb55952c9b7adfb4f0ef6e7b5dbed6ab33fe313388fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c74d531f7641efc154bfb55952c9b7adfb4f0ef6e7b5dbed6ab33fe313388fb", kill_on_drop: false }`
[INFO] [stdout] 4c74d531f7641efc154bfb55952c9b7adfb4f0ef6e7b5dbed6ab33fe313388fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6588bf5a41abeccb461d7fe3daee54e259747c6b3f7b3f3327fd7bef51c61fe9
[INFO] running `Command { std: "docker" "start" "-a" "6588bf5a41abeccb461d7fe3daee54e259747c6b3f7b3f3327fd7bef51c61fe9", kill_on_drop: false }`
[INFO] [stderr] warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique
[INFO] [stderr]  --> src/gc_vtable.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
[INFO] [stderr]   |                              --------- in this derive macro expansion
[INFO] [stderr] 7 | pub struct GcVTable {
[INFO] [stderr] 8 |     collect: unsafe fn(GcBox<Erased>, &Collector),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: the address of the same function can vary between different codegen units
[INFO] [stderr]   = note: furthermore, different functions could have the same address after being merged together
[INFO] [stderr]   = note: for more information visit <https://doc.rust-lang.org/nightly/core/ptr/fn.fn_addr_eq.html>
[INFO] [stderr]   = note: `#[warn(unpredictable_function_pointer_comparisons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique
[INFO] [stderr]  --> src/gc_vtable.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
[INFO] [stderr]   |                              --------- in this derive macro expansion
[INFO] [stderr] ...
[INFO] [stderr] 9 |     drop_in_place: unsafe fn(GcBox<Erased>),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: the address of the same function can vary between different codegen units
[INFO] [stderr]   = note: furthermore, different functions could have the same address after being merged together
[INFO] [stderr]   = note: for more information visit <https://doc.rust-lang.org/nightly/core/ptr/fn.fn_addr_eq.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `ghost-gc` (lib) generated 2 warnings
[INFO] [stderr] warning: `ghost-gc` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ghost_gc-1d8d7bd91fc7a51c)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test gc_box::tests::gcinner_layout_sanity ... ok
[INFO] [stdout] test write::tests::basic_projection ... ok
[INFO] [stdout] test write::tests::incorrect_projection - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/graph.rs (/opt/rustwide/target/debug/deps/graph-ebeab01c4d43f22f)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test basic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ghost_gc
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test src/unique_gc.rs - unique_gc::UniqueGc<'b,T>::into_gc (line 238) ... ok
[INFO] [stdout] test src/unique_gc.rs - unique_gc::UniqueGc<'b,str>::from_str (line 145) ... ok
[INFO] [stdout] test src/write.rs - write::Write<T>::project_unchecked (line 73) ... ok
[INFO] [stdout] test src/unique_gc.rs - unique_gc::UniqueGc<'b,[MaybeUninit<T>]>::assume_init (line 210) ... ok
[INFO] [stdout] test src/unique_gc.rs - unique_gc::UniqueGc<'b,T>::new_zeroed (line 70) ... ok
[INFO] [stdout] test src/unique_gc.rs - unique_gc::UniqueGc<'b,[T]>::new_uninit_slice (line 88) ... ok
[INFO] [stdout] test src/unique_gc.rs - unique_gc::UniqueGc<'b,T>::new (line 21) ... ok
[INFO] [stdout] test src/unique_gc.rs - unique_gc::UniqueGc<'b,T>::new_uninit (line 45) ... ok
[INFO] [stdout] test src/unique_gc.rs - unique_gc::UniqueGc<'b,MaybeUninit<T>>::assume_init (line 171) ... ok
[INFO] [stdout] test src/unique_gc.rs - unique_gc::UniqueGc<'b,[T]>::new_zeroed_slice (line 120) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.57s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6588bf5a41abeccb461d7fe3daee54e259747c6b3f7b3f3327fd7bef51c61fe9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6588bf5a41abeccb461d7fe3daee54e259747c6b3f7b3f3327fd7bef51c61fe9", kill_on_drop: false }`
[INFO] [stdout] 6588bf5a41abeccb461d7fe3daee54e259747c6b3f7b3f3327fd7bef51c61fe9