[INFO] fetching crate piccolo 0.3.3...
[INFO] testing piccolo-0.3.3 against 1.91.0 for beta-1.92-2
[INFO] extracting crate piccolo 0.3.3 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate piccolo 0.3.3
[INFO] finished tweaking crates.io crate piccolo 0.3.3
[INFO] tweaked toml for crates.io crate piccolo 0.3.3 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate piccolo 0.3.3 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate piccolo 0.3.3 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" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sptr v0.3.2
[INFO] [stderr]   Downloaded gc-arena-derive v0.5.3
[INFO] [stderr]   Downloaded gc-arena v0.5.3
[INFO] [stderr]   Downloaded proc-macro2 v1.0.85
[INFO] [stderr]   Downloaded syn v2.0.66
[INFO] [stderr]   Downloaded nix v0.28.0
[INFO] [stderr]   Downloaded rustyline v14.0.0
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 04fbf0ff9192df6631158226fab1e8465177d7c26e79a5d5c47aa5ce06ec043b
[INFO] running `Command { std: "docker" "start" "-a" "04fbf0ff9192df6631158226fab1e8465177d7c26e79a5d5c47aa5ce06ec043b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04fbf0ff9192df6631158226fab1e8465177d7c26e79a5d5c47aa5ce06ec043b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04fbf0ff9192df6631158226fab1e8465177d7c26e79a5d5c47aa5ce06ec043b", kill_on_drop: false }`
[INFO] [stdout] 04fbf0ff9192df6631158226fab1e8465177d7c26e79a5d5c47aa5ce06ec043b
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ae8be5c1fb8330e8f41574788edee823c4f6b9321a992e1c6de9ccb9d7e2f1e1
[INFO] running `Command { std: "docker" "start" "-a" "ae8be5c1fb8330e8f41574788edee823c4f6b9321a992e1c6de9ccb9d7e2f1e1", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]    Compiling proc-macro2 v1.0.85
[INFO] [stderr]    Compiling once_cell v1.19.0
[INFO] [stderr]    Compiling allocator-api2 v0.2.18
[INFO] [stderr]    Compiling sptr v0.3.2
[INFO] [stderr]    Compiling anyhow v1.0.86
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.66
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling hashbrown v0.14.5
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling synstructure v0.13.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.61
[INFO] [stderr]    Compiling gc-arena-derive v0.5.3
[INFO] [stderr]    Compiling gc-arena v0.5.3
[INFO] [stderr]    Compiling thiserror v1.0.61
[INFO] [stderr]    Compiling piccolo v0.3.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/conversion.rs:221:28
[INFO] [stdout]     |
[INFO] [stdout] 221 |                         if let Ok(i) = <$i>::try_from(i) {
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 240 | impl_int_from!(i64, u64, i32, u32, i16, u16, i8, u8);
[INFO] [stdout]     | ---------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `impl_int_from` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/stack.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |         &mut self,
[INFO] [stdout]    |         ^^^^^^^^^ the lifetime is elided here
[INFO] [stdout] 79 |         range: R,
[INFO] [stdout] 80 |     ) -> vec::Drain<Value<'gc>, MetricsAlloc<'gc>> {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden 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] 80 |     ) -> vec::Drain<'_, Value<'gc>, MetricsAlloc<'gc>> {
[INFO] [stdout]    |                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: implicit autoref creates a reference to the dereference of a raw pointer
[INFO] [stdout]   --> src/string.rs:55:65
[INFO] [stdout]    |
[INFO] [stdout] 55 |                         self.metrics.mark_external_deallocation((*ptr).len());
[INFO] [stdout]    |                                                                 ^^---^^^^^^^
[INFO] [stdout]    |                                                                   |
[INFO] [stdout]    |                                                                   this raw pointer has type `*const [u8]`
[INFO] [stdout]    |
[INFO] [stdout]    = note: creating a reference requires the pointer target to be valid and imposes aliasing requirements
[INFO] [stdout] note: autoref is being applied to this expression, resulting in: `&[u8]`
[INFO] [stdout]   --> src/string.rs:55:65
[INFO] [stdout]    |
[INFO] [stdout] 55 |                         self.metrics.mark_external_deallocation((*ptr).len());
[INFO] [stdout]    |                                                                 ^^^^^^
[INFO] [stdout] note: method calls to `len` require a reference
[INFO] [stdout]   --> /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/slice/mod.rs:114:5
[INFO] [stdout]    = note: `#[warn(dangerous_implicit_autorefs)]` on by default
[INFO] [stdout] help: try using a raw pointer method instead; or if this reference is intentional, make it explicit
[INFO] [stdout]    |
[INFO] [stdout] 55 |                         self.metrics.mark_external_deallocation((&(*ptr)).len());
[INFO] [stdout]    |                                                                 ++      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/thread/thread.rs:206:9
[INFO] [stdout]     |
[INFO] [stdout] 206 |         &self,
[INFO] [stdout]     |         ^^^^^ the lifetime is elided here
[INFO] [stdout] ...
[INFO] [stdout] 209 |     ) -> Result<RefMut<ThreadState<'gc>>, BadThreadMode> {
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden 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] 209 |     ) -> Result<RefMut<'_, ThreadState<'gc>>, BadThreadMode> {
[INFO] [stdout]     |                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.03s
[INFO] running `Command { std: "docker" "inspect" "ae8be5c1fb8330e8f41574788edee823c4f6b9321a992e1c6de9ccb9d7e2f1e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae8be5c1fb8330e8f41574788edee823c4f6b9321a992e1c6de9ccb9d7e2f1e1", kill_on_drop: false }`
[INFO] [stdout] ae8be5c1fb8330e8f41574788edee823c4f6b9321a992e1c6de9ccb9d7e2f1e1
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c902862e4f2c509157d655f12af501f87d442a233a48d32f2dc8c343671506da
[INFO] running `Command { std: "docker" "start" "-a" "c902862e4f2c509157d655f12af501f87d442a233a48d32f2dc8c343671506da", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitflags v2.5.0
[INFO] [stderr]    Compiling rustix v0.38.34
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]    Compiling nix v0.28.0
[INFO] [stderr]    Compiling nibble_vec v0.1.0
[INFO] [stderr]    Compiling endian-type v0.1.2
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling log v0.4.21
[INFO] [stderr]    Compiling clap_builder v4.5.7
[INFO] [stderr]    Compiling radix_trie v0.2.1
[INFO] [stderr]    Compiling hashbrown v0.14.5
[INFO] [stderr]    Compiling gc-arena v0.5.3
[INFO] [stderr]    Compiling piccolo v0.3.3 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling clap v4.5.7
[INFO] [stderr]    Compiling fd-lock v4.0.2
[INFO] [stderr]    Compiling rustyline v14.0.0
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/conversion.rs:221:28
[INFO] [stdout]     |
[INFO] [stdout] 221 |                         if let Ok(i) = <$i>::try_from(i) {
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 240 | impl_int_from!(i64, u64, i32, u32, i16, u16, i8, u8);
[INFO] [stdout]     | ---------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `impl_int_from` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/stack.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |         &mut self,
[INFO] [stdout]    |         ^^^^^^^^^ the lifetime is elided here
[INFO] [stdout] 79 |         range: R,
[INFO] [stdout] 80 |     ) -> vec::Drain<Value<'gc>, MetricsAlloc<'gc>> {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden 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] 80 |     ) -> vec::Drain<'_, Value<'gc>, MetricsAlloc<'gc>> {
[INFO] [stdout]    |                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: implicit autoref creates a reference to the dereference of a raw pointer
[INFO] [stdout]   --> src/string.rs:55:65
[INFO] [stdout]    |
[INFO] [stdout] 55 |                         self.metrics.mark_external_deallocation((*ptr).len());
[INFO] [stdout]    |                                                                 ^^---^^^^^^^
[INFO] [stdout]    |                                                                   |
[INFO] [stdout]    |                                                                   this raw pointer has type `*const [u8]`
[INFO] [stdout]    |
[INFO] [stdout]    = note: creating a reference requires the pointer target to be valid and imposes aliasing requirements
[INFO] [stdout] note: autoref is being applied to this expression, resulting in: `&[u8]`
[INFO] [stdout]   --> src/string.rs:55:65
[INFO] [stdout]    |
[INFO] [stdout] 55 |                         self.metrics.mark_external_deallocation((*ptr).len());
[INFO] [stdout]    |                                                                 ^^^^^^
[INFO] [stdout] note: method calls to `len` require a reference
[INFO] [stdout]   --> /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/slice/mod.rs:114:5
[INFO] [stdout]    = note: `#[warn(dangerous_implicit_autorefs)]` on by default
[INFO] [stdout] help: try using a raw pointer method instead; or if this reference is intentional, make it explicit
[INFO] [stdout]    |
[INFO] [stdout] 55 |                         self.metrics.mark_external_deallocation((&(*ptr)).len());
[INFO] [stdout]    |                                                                 ++      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/thread/thread.rs:206:9
[INFO] [stdout]     |
[INFO] [stdout] 206 |         &self,
[INFO] [stdout]     |         ^^^^^ the lifetime is elided here
[INFO] [stdout] ...
[INFO] [stdout] 209 |     ) -> Result<RefMut<ThreadState<'gc>>, BadThreadMode> {
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden 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] 209 |     ) -> Result<RefMut<'_, ThreadState<'gc>>, BadThreadMode> {
[INFO] [stdout]     |                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/conversion.rs:221:28
[INFO] [stdout]     |
[INFO] [stdout] 221 |                         if let Ok(i) = <$i>::try_from(i) {
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 240 | impl_int_from!(i64, u64, i32, u32, i16, u16, i8, u8);
[INFO] [stdout]     | ---------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `impl_int_from` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]    --> examples/interpreter.rs:89:1
[INFO] [stdout]     |
[INFO] [stdout]  89 | fn main() -> Result<(), Box<dyn StdError>> {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stdout]     = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromValue<'_>` will fail
[INFO] [stdout]    --> examples/interpreter.rs:117:9
[INFO] [stdout]     |
[INFO] [stdout] 117 |     lua.execute(&executor)?;
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout]     = note: `#[warn(dependency_on_unit_never_type_fallback)]` (part of `#[warn(rust_2024_compatibility)]`) on by default
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]     |
[INFO] [stdout] 117 |     lua.execute::<()>(&executor)?;
[INFO] [stdout]     |                ++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/stack.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |         &mut self,
[INFO] [stdout]    |         ^^^^^^^^^ the lifetime is elided here
[INFO] [stdout] 79 |         range: R,
[INFO] [stdout] 80 |     ) -> vec::Drain<Value<'gc>, MetricsAlloc<'gc>> {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden 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] 80 |     ) -> vec::Drain<'_, Value<'gc>, MetricsAlloc<'gc>> {
[INFO] [stdout]    |                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: implicit autoref creates a reference to the dereference of a raw pointer
[INFO] [stdout]   --> src/string.rs:55:65
[INFO] [stdout]    |
[INFO] [stdout] 55 |                         self.metrics.mark_external_deallocation((*ptr).len());
[INFO] [stdout]    |                                                                 ^^---^^^^^^^
[INFO] [stdout]    |                                                                   |
[INFO] [stdout]    |                                                                   this raw pointer has type `*const [u8]`
[INFO] [stdout]    |
[INFO] [stdout]    = note: creating a reference requires the pointer target to be valid and imposes aliasing requirements
[INFO] [stdout] note: autoref is being applied to this expression, resulting in: `&[u8]`
[INFO] [stdout]   --> src/string.rs:55:65
[INFO] [stdout]    |
[INFO] [stdout] 55 |                         self.metrics.mark_external_deallocation((*ptr).len());
[INFO] [stdout]    |                                                                 ^^^^^^
[INFO] [stdout] note: method calls to `len` require a reference
[INFO] [stdout]   --> /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/slice/mod.rs:114:5
[INFO] [stdout]    = note: `#[warn(dangerous_implicit_autorefs)]` on by default
[INFO] [stdout] help: try using a raw pointer method instead; or if this reference is intentional, make it explicit
[INFO] [stdout]    |
[INFO] [stdout] 55 |                         self.metrics.mark_external_deallocation((&(*ptr)).len());
[INFO] [stdout]    |                                                                 ++      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/thread/thread.rs:206:9
[INFO] [stdout]     |
[INFO] [stdout] 206 |         &self,
[INFO] [stdout]     |         ^^^^^ the lifetime is elided here
[INFO] [stdout] ...
[INFO] [stdout] 209 |     ) -> Result<RefMut<ThreadState<'gc>>, BadThreadMode> {
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden 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] 209 |     ) -> Result<RefMut<'_, ThreadState<'gc>>, BadThreadMode> {
[INFO] [stdout]     |                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 18.12s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: piccolo v0.3.3 (/opt/rustwide/workdir)
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "c902862e4f2c509157d655f12af501f87d442a233a48d32f2dc8c343671506da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c902862e4f2c509157d655f12af501f87d442a233a48d32f2dc8c343671506da", kill_on_drop: false }`
[INFO] [stdout] c902862e4f2c509157d655f12af501f87d442a233a48d32f2dc8c343671506da
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c4c77660688d0f4ec9b5d143d4c1212b4e21a28b449046c2c0b9c28b09feef05
[INFO] running `Command { std: "docker" "start" "-a" "c4c77660688d0f4ec9b5d143d4c1212b4e21a28b449046c2c0b9c28b09feef05", kill_on_drop: false }`
[INFO] [stderr] warning: irrefutable `if let` pattern
[INFO] [stderr]    --> src/conversion.rs:221:28
[INFO] [stderr]     |
[INFO] [stderr] 221 |                         if let Ok(i) = <$i>::try_from(i) {
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 240 | impl_int_from!(i64, u64, i32, u32, i16, u16, i8, u8);
[INFO] [stderr]     | ---------------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stderr]     = help: consider replacing the `if let` with a `let`
[INFO] [stderr]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stderr]     = note: this warning originates in the macro `impl_int_from` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/stack.rs:78:9
[INFO] [stderr]    |
[INFO] [stderr] 78 |         &mut self,
[INFO] [stderr]    |         ^^^^^^^^^ the lifetime is elided here
[INFO] [stderr] 79 |         range: R,
[INFO] [stderr] 80 |     ) -> vec::Drain<Value<'gc>, MetricsAlloc<'gc>> {
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 80 |     ) -> vec::Drain<'_, Value<'gc>, MetricsAlloc<'gc>> {
[INFO] [stderr]    |                     +++
[INFO] [stderr] 
[INFO] [stderr] warning: implicit autoref creates a reference to the dereference of a raw pointer
[INFO] [stderr]   --> src/string.rs:55:65
[INFO] [stderr]    |
[INFO] [stderr] 55 |                         self.metrics.mark_external_deallocation((*ptr).len());
[INFO] [stderr]    |                                                                 ^^---^^^^^^^
[INFO] [stderr]    |                                                                   |
[INFO] [stderr]    |                                                                   this raw pointer has type `*const [u8]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: creating a reference requires the pointer target to be valid and imposes aliasing requirements
[INFO] [stderr] note: autoref is being applied to this expression, resulting in: `&[u8]`
[INFO] [stderr]   --> src/string.rs:55:65
[INFO] [stderr]    |
[INFO] [stderr] 55 |                         self.metrics.mark_external_deallocation((*ptr).len());
[INFO] [stderr]    |                                                                 ^^^^^^
[INFO] [stderr] note: method calls to `len` require a reference
[INFO] [stderr]   --> /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/slice/mod.rs:114:5
[INFO] [stderr]    = note: `#[warn(dangerous_implicit_autorefs)]` on by default
[INFO] [stderr] help: try using a raw pointer method instead; or if this reference is intentional, make it explicit
[INFO] [stderr]    |
[INFO] [stderr] 55 |                         self.metrics.mark_external_deallocation((&(*ptr)).len());
[INFO] [stderr]    |                                                                 ++      +
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/thread/thread.rs:206:9
[INFO] [stderr]     |
[INFO] [stderr] 206 |         &self,
[INFO] [stderr]     |         ^^^^^ the lifetime is elided here
[INFO] [stderr] ...
[INFO] [stderr] 209 |     ) -> Result<RefMut<ThreadState<'gc>>, BadThreadMode> {
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 209 |     ) -> Result<RefMut<'_, ThreadState<'gc>>, BadThreadMode> {
[INFO] [stderr]     |                        +++
[INFO] [stderr] 
[INFO] [stderr] warning: `piccolo` (lib) generated 4 warnings (run `cargo fix --lib -p piccolo` to apply 2 suggestions)
[INFO] [stderr] warning: this function depends on never type fallback being `()`
[INFO] [stderr]    --> examples/interpreter.rs:89:1
[INFO] [stderr]     |
[INFO] [stderr]  89 | fn main() -> Result<(), Box<dyn StdError>> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stderr]     = help: specify the types explicitly
[INFO] [stderr] note: in edition 2024, the requirement `!: FromValue<'_>` will fail
[INFO] [stderr]    --> examples/interpreter.rs:117:9
[INFO] [stderr]     |
[INFO] [stderr] 117 |     lua.execute(&executor)?;
[INFO] [stderr]     |         ^^^^^^^
[INFO] [stderr]     = note: `#[warn(dependency_on_unit_never_type_fallback)]` (part of `#[warn(rust_2024_compatibility)]`) on by default
[INFO] [stderr] help: use `()` annotations to avoid fallback changes
[INFO] [stderr]     |
[INFO] [stderr] 117 |     lua.execute::<()>(&executor)?;
[INFO] [stderr]     |                ++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `piccolo` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr] warning: `piccolo` (example "interpreter") generated 1 warning (run `cargo fix --example "interpreter"` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: piccolo v0.3.3 (/opt/rustwide/workdir)
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/piccolo-d614b50cdf49b285)
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test any::tests::test_any_value ... ok
[INFO] [stdout] test compiler::lexer::tests::long_string ... ok
[INFO] [stdout] test compiler::lexer::tests::short_string ... ok
[INFO] [stdout] test io::tests::test_skip_prefix ... ok
[INFO] [stdout] test compiler::lexer::tests::comments ... ok
[INFO] [stdout] test string::tests::test_string_header ... ok
[INFO] [stdout] test compiler::lexer::tests::words ... ok
[INFO] [stdout] test compiler::lexer::tests::numerals ... ok
[INFO] [stdout] test compiler::lexer::tests::ops ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/callback.rs (/opt/rustwide/target/debug/deps/callback-e0755bbcbcb5285c)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test tail_call_trivial_callback ... ok
[INFO] [stdout] test resume_with_err ... ok
[INFO] [stdout] test callback ... ok
[INFO] [stdout] test yield_sequence ... ok
[INFO] [stdout] test loopy_callback ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/conversion.rs (/opt/rustwide/target/debug/deps/conversion-8c6648351e942517)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_conversions ... 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]      Running tests/error.rs (/opt/rustwide/target/debug/deps/error-81dcf7ee282bcff1)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test sizes::test_sizes ... ok
[INFO] [stdout] test error_tostring ... ok
[INFO] [stderr]      Running tests/fuel.rs (/opt/rustwide/target/debug/deps/fuel-c77adcfa452f1898)
[INFO] [stdout] test error_unwind ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_interrupt ... 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]      Running tests/function.rs (/opt/rustwide/target/debug/deps/function-76d420a84a6169cd)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test function_compose_bind ... 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]      Running tests/scripts.rs (/opt/rustwide/target/debug/deps/scripts-a608118e22c8c560)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test table::test_table_iter ... running all test scripts in "./tests/scripts"
[INFO] [stdout] ok
[INFO] [stdout] running "./tests/scripts/environment.lua"
[INFO] [stdout] running "./tests/scripts/bit.lua"
[INFO] [stdout] running "./tests/scripts/table.lua"
[INFO] [stdout] running "./tests/scripts/string.lua"
[INFO] [stdout] running "./tests/scripts/repeat.lua"
[INFO] [stdout] running "./tests/scripts/recursion.lua"
[INFO] [stdout] running "./tests/scripts/select.lua"
[INFO] [stdout] running "./tests/scripts/operators.lua"
[INFO] [stdout] running "./tests/scripts/scope.lua"
[INFO] [stdout] running "./tests/scripts/math.lua"
[INFO] [stdout] running "./tests/scripts/metacall.lua"
[INFO] [stdout] running "./tests/scripts/pairs.lua"
[INFO] [stdout] running "./tests/scripts/upvalues.lua"
[INFO] [stdout] running "./tests/scripts/next.lua"
[INFO] [stdout] running "./tests/scripts/multi.lua"
[INFO] [stdout] running "./tests/scripts/metaindex.lua"
[INFO] [stdout] running "./tests/scripts/jumps_close_upvalues.lua"
[INFO] [stdout] running "./tests/scripts/goto.lua"
[INFO] [stdout] running "./tests/scripts/basic.lua"
[INFO] [stdout] running "./tests/scripts/methods.lua"
[INFO] [stdout] running "./tests/scripts/if.lua"
[INFO] [stdout] running "./tests/scripts/varargs.lua"
[INFO] [stdout] running "./tests/scripts/expression_order.lua"
[INFO] [stdout] running "./tests/scripts/function.lua"
[INFO] [stdout] running "./tests/scripts/tailcall.lua"
[INFO] [stdout] running "./tests/scripts/type.lua"
[INFO] [stdout] running "./tests/scripts/metaeq.lua"
[INFO] [stdout] running "./tests/scripts/for.lua"
[INFO] [stdout] running "./tests/scripts/function_assign.lua"
[INFO] [stdout] running "./tests/scripts/coroutine.lua"
[INFO] [stdout] running "./tests/scripts/while.lua"
[INFO] [stdout] running "./tests/scripts/pcall.lua"
[INFO] [stdout] test test_scripts ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.57s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/sizes.rs (/opt/rustwide/target/debug/deps/sizes-d22a91a337a563b1)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_sizes ... 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]      Running tests/table.rs (/opt/rustwide/target/debug/deps/table-aea0f19f17270543)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_table_iter ... 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]      Running tests/tail_call_stack_panic.rs (/opt/rustwide/target/debug/deps/tail_call_stack_panic-0456302ae15fd7d5)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tail_call_stack_panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/userdata.rs (/opt/rustwide/target/debug/deps/userdata-8f40688e6ccef948)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test userdata ... 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]      Running tests/weak_threads.rs (/opt/rustwide/target/debug/deps/weak_threads-18cf50ded7509dec)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test live_upvalues_not_dead ... ok
[INFO] [stdout] test weak_threads_close ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]    Doc-tests piccolo
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c4c77660688d0f4ec9b5d143d4c1212b4e21a28b449046c2c0b9c28b09feef05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4c77660688d0f4ec9b5d143d4c1212b4e21a28b449046c2c0b9c28b09feef05", kill_on_drop: false }`
[INFO] [stdout] c4c77660688d0f4ec9b5d143d4c1212b4e21a28b449046c2c0b9c28b09feef05
