[INFO] fetching crate piccolo 0.3.3... [INFO] testing piccolo-0.3.3 against try#2440211fe03bc45c89b6dc1a3df18382ce91e32b for pr-146098-1 [INFO] extracting crate piccolo 0.3.3 into /workspace/builds/worker-4-tc2/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-4-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate piccolo 0.3.3 on toolchain 2440211fe03bc45c89b6dc1a3df18382ce91e32b [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "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" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 4d99a7350360a1a0c719992d4e5609a6d1d3725d6024f47f7458a24c2d03f811 [INFO] running `Command { std: "docker" "start" "-a" "4d99a7350360a1a0c719992d4e5609a6d1d3725d6024f47f7458a24c2d03f811", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "4d99a7350360a1a0c719992d4e5609a6d1d3725d6024f47f7458a24c2d03f811", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4d99a7350360a1a0c719992d4e5609a6d1d3725d6024f47f7458a24c2d03f811", kill_on_drop: false }` [INFO] [stdout] 4d99a7350360a1a0c719992d4e5609a6d1d3725d6024f47f7458a24c2d03f811 [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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ba2a71177d23f97403c8e323743044809b11dfd45be41d6d48a8cf5c2b1bb898 [INFO] running `Command { std: "docker" "start" "-a" "ba2a71177d23f97403c8e323743044809b11dfd45be41d6d48a8cf5c2b1bb898", 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 zerocopy v0.7.34 [INFO] [stderr] Compiling thiserror v1.0.61 [INFO] [stderr] Compiling allocator-api2 v0.2.18 [INFO] [stderr] Compiling anyhow v1.0.86 [INFO] [stderr] Compiling sptr v0.3.2 [INFO] [stderr] Compiling getrandom v0.2.15 [INFO] [stderr] Compiling quote v1.0.36 [INFO] [stderr] Compiling rand_core v0.6.4 [INFO] [stderr] Compiling ahash v0.8.11 [INFO] [stderr] Compiling syn v2.0.66 [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 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, 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] error: 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/2440211fe03bc45c89b6dc1a3df18382ce91e32b/library/core/src/slice/mod.rs:114:5 [INFO] [stdout] = note: `#[deny(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>, 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>, BadThreadMode> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `piccolo` (lib) due to 1 previous error; 3 warnings emitted [INFO] running `Command { std: "docker" "inspect" "ba2a71177d23f97403c8e323743044809b11dfd45be41d6d48a8cf5c2b1bb898", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ba2a71177d23f97403c8e323743044809b11dfd45be41d6d48a8cf5c2b1bb898", kill_on_drop: false }` [INFO] [stdout] ba2a71177d23f97403c8e323743044809b11dfd45be41d6d48a8cf5c2b1bb898