[INFO] fetching crate scoped-gc 0.1.5...
[INFO] checking scoped-gc-0.1.5 against master#bbe853615821442ef11d6cd42a30a73432b38d89 for pr-154205
[INFO] extracting crate scoped-gc 0.1.5 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate scoped-gc 0.1.5
[INFO] finished tweaking crates.io crate scoped-gc 0.1.5
[INFO] tweaked toml for crates.io crate scoped-gc 0.1.5 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate scoped-gc 0.1.5 on toolchain bbe853615821442ef11d6cd42a30a73432b38d89
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bbe853615821442ef11d6cd42a30a73432b38d89" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bbe853615821442ef11d6cd42a30a73432b38d89" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bbe853615821442ef11d6cd42a30a73432b38d89" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+bbe853615821442ef11d6cd42a30a73432b38d89" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 53457fd3463fcb9f8631b25d31b06c40809b6c1d4f6baf0462e2fb4566a59d97
[INFO] running `Command { std: "docker" "start" "-a" "53457fd3463fcb9f8631b25d31b06c40809b6c1d4f6baf0462e2fb4566a59d97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "53457fd3463fcb9f8631b25d31b06c40809b6c1d4f6baf0462e2fb4566a59d97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53457fd3463fcb9f8631b25d31b06c40809b6c1d4f6baf0462e2fb4566a59d97", kill_on_drop: false }`
[INFO] [stdout] 53457fd3463fcb9f8631b25d31b06c40809b6c1d4f6baf0462e2fb4566a59d97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+bbe853615821442ef11d6cd42a30a73432b38d89" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4b21207db54ac88d14fdc6d417be9bfd1399d073c562a519add977a9ad7462da
[INFO] running `Command { std: "docker" "start" "-a" "4b21207db54ac88d14fdc6d417be9bfd1399d073c562a519add977a9ad7462da", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr]     Checking scoped-gc v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/gc.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 |   fn inner(&self) -> &GcBox<T>;
[INFO] [stdout]    |            ^^^^^     ^^^^^^^^^
[INFO] [stdout]    |            |         ||
[INFO] [stdout]    |            |         |the same lifetime is hidden here
[INFO] [stdout]    |            |         the same lifetime is elided here
[INFO] [stdout]    |            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 31 |   fn inner(&self) -> &GcBox<'_, T>;
[INFO] [stdout]    |                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/gc.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |   fn inner(&self) -> &GcBox<T> {
[INFO] [stdout]    |            ^^^^^     ^^^^^^^^^
[INFO] [stdout]    |            |         ||
[INFO] [stdout]    |            |         |the same lifetime is hidden here
[INFO] [stdout]    |            |         the same lifetime is elided here
[INFO] [stdout]    |            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 35 |   fn inner(&self) -> &GcBox<'_, T> {
[INFO] [stdout]    |                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/gc_ref_cell.rs:20:17
[INFO] [stdout]    |
[INFO] [stdout] 20 |   pub fn borrow(&self) -> GcRef<T> {
[INFO] [stdout]    |                 ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 20 |   pub fn borrow(&self) -> GcRef<'_, T> {
[INFO] [stdout]    |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/gc_ref_cell.rs:24:21
[INFO] [stdout]    |
[INFO] [stdout] 24 |   pub fn borrow_mut(&self) -> GcRefMut<T> {
[INFO] [stdout]    |                     ^^^^^     ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 24 |   pub fn borrow_mut(&self) -> GcRefMut<'_, T> {
[INFO] [stdout]    |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]   --> src/test.rs:29:7
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct CircularNamedObject<'a> {
[INFO] [stdout]    |            ------------------- field in this struct
[INFO] [stdout] 29 |   pub name: String,
[INFO] [stdout]    |       ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CircularNamedObject` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/gc.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 |   fn inner(&self) -> &GcBox<T>;
[INFO] [stdout]    |            ^^^^^     ^^^^^^^^^
[INFO] [stdout]    |            |         ||
[INFO] [stdout]    |            |         |the same lifetime is hidden here
[INFO] [stdout]    |            |         the same lifetime is elided here
[INFO] [stdout]    |            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 31 |   fn inner(&self) -> &GcBox<'_, T>;
[INFO] [stdout]    |                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/gc.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |   fn inner(&self) -> &GcBox<T> {
[INFO] [stdout]    |            ^^^^^     ^^^^^^^^^
[INFO] [stdout]    |            |         ||
[INFO] [stdout]    |            |         |the same lifetime is hidden here
[INFO] [stdout]    |            |         the same lifetime is elided here
[INFO] [stdout]    |            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 35 |   fn inner(&self) -> &GcBox<'_, T> {
[INFO] [stdout]    |                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/gc_ref_cell.rs:20:17
[INFO] [stdout]    |
[INFO] [stdout] 20 |   pub fn borrow(&self) -> GcRef<T> {
[INFO] [stdout]    |                 ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 20 |   pub fn borrow(&self) -> GcRef<'_, T> {
[INFO] [stdout]    |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/gc_ref_cell.rs:24:21
[INFO] [stdout]    |
[INFO] [stdout] 24 |   pub fn borrow_mut(&self) -> GcRefMut<T> {
[INFO] [stdout]    |                     ^^^^^     ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 24 |   pub fn borrow_mut(&self) -> GcRefMut<'_, T> {
[INFO] [stdout]    |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "4b21207db54ac88d14fdc6d417be9bfd1399d073c562a519add977a9ad7462da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b21207db54ac88d14fdc6d417be9bfd1399d073c562a519add977a9ad7462da", kill_on_drop: false }`
[INFO] [stdout] 4b21207db54ac88d14fdc6d417be9bfd1399d073c562a519add977a9ad7462da