[INFO] fetching crate typed-arena-nomut 0.1.0... [INFO] checking typed-arena-nomut-0.1.0 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170 [INFO] extracting crate typed-arena-nomut 0.1.0 into /workspace/builds/worker-2-tc1/source [INFO] started tweaking crates.io crate typed-arena-nomut 0.1.0 [INFO] finished tweaking crates.io crate typed-arena-nomut 0.1.0 [INFO] tweaked toml for crates.io crate typed-arena-nomut 0.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate typed-arena-nomut 0.1.0 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 71 packages to latest compatible versions [INFO] [stderr] Adding criterion v0.3.6 (available: v0.6.0) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 58774bed0cd4b161730321ee743065f4499dff28b43044646d43c6bfaa2acb95 [INFO] running `Command { std: "docker" "start" "-a" "58774bed0cd4b161730321ee743065f4499dff28b43044646d43c6bfaa2acb95", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "58774bed0cd4b161730321ee743065f4499dff28b43044646d43c6bfaa2acb95", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "58774bed0cd4b161730321ee743065f4499dff28b43044646d43c6bfaa2acb95", kill_on_drop: false }` [INFO] [stdout] 58774bed0cd4b161730321ee743065f4499dff28b43044646d43c6bfaa2acb95 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4805be0f94945a5085821a79247e9c8591a124d97ff06630ef8b1f69c66e67d7 [INFO] running `Command { std: "docker" "start" "-a" "4805be0f94945a5085821a79247e9c8591a124d97ff06630ef8b1f69c66e67d7", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024 [INFO] [stderr] Compiling crossbeam-utils v0.8.21 [INFO] [stderr] Compiling autocfg v1.5.0 [INFO] [stderr] Checking memchr v2.7.5 [INFO] [stderr] Compiling rayon-core v1.12.1 [INFO] [stderr] Checking regex-syntax v0.8.5 [INFO] [stderr] Checking plotters-backend v0.3.7 [INFO] [stderr] Checking half v1.8.3 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking itertools v0.10.5 [INFO] [stderr] Checking cast v0.3.0 [INFO] [stderr] Checking oorandom v11.1.5 [INFO] [stderr] Checking typed-arena-nomut v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Compiling syn v2.0.104 [INFO] [stderr] Checking clap v2.34.0 [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/lib.rs:493:17 [INFO] [stdout] | [INFO] [stdout] 493 | pub fn iter(&self) -> Iter { [INFO] [stdout] | ^^^^^ ------- the lifetime gets resolved as `'_` [INFO] [stdout] | | [INFO] [stdout] | this lifetime flows to the output [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths [INFO] [stdout] | [INFO] [stdout] 493 | pub fn iter(&self) -> Iter<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking plotters-svg v0.3.7 [INFO] [stderr] Compiling num-traits v0.2.19 [INFO] [stderr] Checking serde_cbor v0.11.2 [INFO] [stderr] Checking crossbeam-epoch v0.9.18 [INFO] [stderr] Checking csv-core v0.1.12 [INFO] [stderr] Checking serde_json v1.0.140 [INFO] [stderr] Checking crossbeam-deque v0.8.6 [INFO] [stderr] Checking csv v1.3.1 [INFO] [stderr] Checking regex-automata v0.4.9 [INFO] [stderr] Checking plotters v0.3.7 [INFO] [stderr] Checking tinytemplate v1.2.1 [INFO] [stderr] Checking rayon v1.10.0 [INFO] [stderr] Checking criterion-plot v0.4.5 [INFO] [stderr] Checking regex v1.11.1 [INFO] [stderr] Compiling serde_derive v1.0.219 [INFO] [stderr] Checking criterion v0.3.6 [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> benches/benches.rs:8:14 [INFO] [stdout] | [INFO] [stdout] 8 | struct Small(usize); [INFO] [stdout] | ----- ^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing this field [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> benches/benches.rs:11:12 [INFO] [stdout] | [INFO] [stdout] 11 | struct Big([usize; 32]); [INFO] [stdout] | --- ^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing this field [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `2` is never read [INFO] [stdout] --> src/test.rs:14:56 [INFO] [stdout] | [INFO] [stdout] 14 | struct Node<'a, 'b: 'a>(Option<&'a Node<'a, 'b>>, u32, DropTracker<'b>); [INFO] [stdout] | ---- field in this struct ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: consider removing this field [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/lib.rs:493:17 [INFO] [stdout] | [INFO] [stdout] 493 | pub fn iter(&self) -> Iter { [INFO] [stdout] | ^^^^^ ------- the lifetime gets resolved as `'_` [INFO] [stdout] | | [INFO] [stdout] | this lifetime flows to the output [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths [INFO] [stdout] | [INFO] [stdout] 493 | pub fn iter(&self) -> Iter<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/test.rs:42:9 [INFO] [stdout] | [INFO] [stdout] 42 | mem::drop(node); [INFO] [stdout] | ^^^^^^^^^^----^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&Node<'_, '_>` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dropping_references)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 42 - mem::drop(node); [INFO] [stdout] 42 + let _ = node; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: implicit autoref creates a reference to the dereference of a raw pointer [INFO] [stdout] --> src/test.rs:167:17 [INFO] [stdout] | [INFO] [stdout] 167 | assert!((*uninitialized).len() >= 2); [INFO] [stdout] | ^^-------------^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | this raw pointer has type `*mut [MaybeUninit]` [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: `&[MaybeUninit]` [INFO] [stdout] --> src/test.rs:167:17 [INFO] [stdout] | [INFO] [stdout] 167 | assert!((*uninitialized).len() >= 2); [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] note: method calls to `len` require a reference [INFO] [stdout] --> /rustc/cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c/library/core/src/slice/mod.rs:116:5 [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] 167 | assert!((&(*uninitialized)).len() >= 2); [INFO] [stdout] | ++ + [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `typed-arena-nomut` (lib test) due to 1 previous error; 3 warnings emitted [INFO] running `Command { std: "docker" "inspect" "4805be0f94945a5085821a79247e9c8591a124d97ff06630ef8b1f69c66e67d7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4805be0f94945a5085821a79247e9c8591a124d97ff06630ef8b1f69c66e67d7", kill_on_drop: false }` [INFO] [stdout] 4805be0f94945a5085821a79247e9c8591a124d97ff06630ef8b1f69c66e67d7