[INFO] fetching crate sandpit 0.5.3...
[INFO] checking sandpit-0.5.3 against a5689b034ad287112f709693384a37f1377eb9cc for pr-129249-3
[INFO] extracting crate sandpit 0.5.3 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate sandpit 0.5.3
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate sandpit 0.5.3
[INFO] tweaked toml for crates.io crate sandpit 0.5.3 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate sandpit 0.5.3 on toolchain a5689b034ad287112f709693384a37f1377eb9cc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate sandpit 0.5.3 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" "+a5689b034ad287112f709693384a37f1377eb9cc" "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/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] ccc84b9c9e215b549915d7f2bb1456f01a12b98c8a199b45d8af8974eab52eed
[INFO] running `Command { std: "docker" "start" "ccc84b9c9e215b549915d7f2bb1456f01a12b98c8a199b45d8af8974eab52eed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ccc84b9c9e215b549915d7f2bb1456f01a12b98c8a199b45d8af8974eab52eed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "ccc84b9c9e215b549915d7f2bb1456f01a12b98c8a199b45d8af8974eab52eed" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ccc84b9c9e215b549915d7f2bb1456f01a12b98c8a199b45d8af8974eab52eed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "ccc84b9c9e215b549915d7f2bb1456f01a12b98c8a199b45d8af8974eab52eed" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]    Compiling zerocopy v0.8.27
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]     Checking regex-syntax v0.8.8
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking clap_lex v0.7.6
[INFO] [stderr]     Checking memchr v2.7.6
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking never-say-never v6.6.666
[INFO] [stderr]     Checking nimix v0.2.0
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]     Checking is-terminal v0.4.17
[INFO] [stderr]     Checking higher-kinded-types v0.1.1
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking clap_builder v4.5.51
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]     Checking plotters v0.3.7
[INFO] [stderr]    Compiling syn v2.0.108
[INFO] [stderr]     Checking regex-automata v0.4.13
[INFO] [stderr]     Checking criterion-plot v0.5.0
[INFO] [stderr]     Checking clap v4.5.51
[INFO] [stderr]     Checking regex v1.12.2
[INFO] [stderr]    Compiling zerocopy-derive v0.8.27
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling sandpit_derive v0.5.3
[INFO] [stderr]     Checking sandpit v0.5.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking half v2.7.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking ciborium-ll v0.2.2
[INFO] [stderr]     Checking ciborium v0.2.2
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking criterion v0.5.1
[INFO] [stdout] warning: field `alignment_range` is never read
[INFO] [stdout]   --> tests/fuzz_lib.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct FuzzConfig {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 28 |     pub alignment_range: (u32, u32),
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FuzzConfig` has derived impls for the traits `Clone` and `Debug`, but these are 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] error: useless conversion to the same type: `Gc<'_, [Gc<'_, usize>]>`
[INFO] [stdout]    --> tests/tests.rs:368:25
[INFO] [stdout]     |
[INFO] [stdout] 368 |         Arena::new(|mu| mu.alloc_array_from_fn(100, |idx| Gc::new(mu, idx)).into());
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]     = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 368 -         Arena::new(|mu| mu.alloc_array_from_fn(100, |idx| Gc::new(mu, idx)).into());
[INFO] [stdout] 368 +         Arena::new(|mu| mu.alloc_array_from_fn(100, |idx| Gc::new(mu, idx)));
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 368 -         Arena::new(|mu| mu.alloc_array_from_fn(100, |idx| Gc::new(mu, idx)).into());
[INFO] [stdout] 368 +         Arena::new(|mu| <Gc<'_, [Gc<'_, usize>]> as Into<_>>::into(mu.alloc_array_from_fn(100, |idx| Gc::new(mu, idx))));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `Gc<'_, [usize]>`
[INFO] [stdout]    --> tests/tests.rs:416:37
[INFO] [stdout]     |
[INFO] [stdout] 416 |         Arena::new(|mu| Gc::new(mu, mu.alloc_array_from_fn(100, |i| i).into()));
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 416 -         Arena::new(|mu| Gc::new(mu, mu.alloc_array_from_fn(100, |i| i).into()));
[INFO] [stdout] 416 +         Arena::new(|mu| Gc::new(mu, mu.alloc_array_from_fn(100, |i| i)));
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 416 -         Arena::new(|mu| Gc::new(mu, mu.alloc_array_from_fn(100, |i| i).into()));
[INFO] [stdout] 416 +         Arena::new(|mu| Gc::new(mu, <Gc<'_, [usize]> as Into<_>>::into(mu.alloc_array_from_fn(100, |i| i))));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `Gc<'_, [usize]>`
[INFO] [stdout]    --> tests/tests.rs:708:47
[INFO] [stdout]     |
[INFO] [stdout] 708 |         Arena::new(|mu| InnerBarrier::new(mu, mu.alloc_array_from_fn(100, |i| i).into()));
[INFO] [stdout]     |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 708 -         Arena::new(|mu| InnerBarrier::new(mu, mu.alloc_array_from_fn(100, |i| i).into()));
[INFO] [stdout] 708 +         Arena::new(|mu| InnerBarrier::new(mu, mu.alloc_array_from_fn(100, |i| i)));
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 708 -         Arena::new(|mu| InnerBarrier::new(mu, mu.alloc_array_from_fn(100, |i| i).into()));
[INFO] [stdout] 708 +         Arena::new(|mu| InnerBarrier::new(mu, <Gc<'_, [usize]> as Into<_>>::into(mu.alloc_array_from_fn(100, |i| i))));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sandpit` (test "tests") due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "ccc84b9c9e215b549915d7f2bb1456f01a12b98c8a199b45d8af8974eab52eed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ccc84b9c9e215b549915d7f2bb1456f01a12b98c8a199b45d8af8974eab52eed", kill_on_drop: false }`
[INFO] [stdout] ccc84b9c9e215b549915d7f2bb1456f01a12b98c8a199b45d8af8974eab52eed
