[INFO] fetching crate lake 0.2.0...
[INFO] testing lake-0.2.0 against beta-2026-01-20 for beta-1.94-1
[INFO] extracting crate lake 0.2.0 into /workspace/builds/worker-1-tc2/source
[INFO] removed /workspace/builds/worker-1-tc2/source/.cargo/config.toml
[INFO] started tweaking crates.io crate lake 0.2.0
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate lake 0.2.0
[INFO] tweaked toml for crates.io crate lake 0.2.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate lake 0.2.0 on toolchain beta-2026-01-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate lake 0.2.0 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" "+beta-2026-01-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 33e02225bea0caac5d7385043409b94aaa1ce9aafc135688897fc6bad8af5ee3
[INFO] running `Command { std: "docker" "start" "-a" "33e02225bea0caac5d7385043409b94aaa1ce9aafc135688897fc6bad8af5ee3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "33e02225bea0caac5d7385043409b94aaa1ce9aafc135688897fc6bad8af5ee3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33e02225bea0caac5d7385043409b94aaa1ce9aafc135688897fc6bad8af5ee3", kill_on_drop: false }`
[INFO] [stdout] 33e02225bea0caac5d7385043409b94aaa1ce9aafc135688897fc6bad8af5ee3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3692682d87fe1ba27baca242ac6d3cef21e142a96bb5188d6d83f056fcabc81a
[INFO] running `Command { std: "docker" "start" "-a" "3692682d87fe1ba27baca242ac6d3cef21e142a96bb5188d6d83f056fcabc81a", kill_on_drop: false }`
[INFO] [stderr]    Compiling lake v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::droplet::Droplet`
[INFO] [stdout]  --> src/lake/droplet/droplet_dyn.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::droplet::Droplet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `_MM_HINT_T0` and `_mm_prefetch`
[INFO] [stdout]  --> src/lake/memory/writer.rs:1:101
[INFO] [stdout]   |
[INFO] [stdout] 1 | ...256, _mm256_storeu_si256, _mm_loadu_si128, _mm_prefetch, _mm_storeu_si128, _MM_HINT_T0};
[INFO] [stdout]   |                                               ^^^^^^^^^^^^                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Add`
[INFO] [stdout]  --> src/lake/droplet/mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ops::Add;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: lifetime may not live long enough
[INFO] [stdout]    --> src/lake/lake/lake_view.rs:101:13
[INFO] [stdout]     |
[INFO] [stdout]  31 | impl<'a, const SIZE: usize> LakeView<'a, SIZE> {
[INFO] [stdout]     |      -- lifetime `'a` defined here
[INFO] [stdout] ...
[INFO] [stdout] 101 |             lake,
[INFO] [stdout]     |             ^^^^ this usage requires that `'a` must outlive `'static`
[INFO] [stdout]     |
[INFO] [stdout]     = note: requirement occurs because of a mutable pointer to `dyn LakeMeta`
[INFO] [stdout]     = note: mutable pointers are invariant over their type parameter
[INFO] [stdout]     = help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
[INFO] [stdout] note: raw pointer casts of trait objects cannot extend lifetimes
[INFO] [stdout]    --> src/lake/lake/lake_view.rs:95:39
[INFO] [stdout]     |
[INFO] [stdout]  95 |         let lake: *mut dyn LakeMeta = self as *mut Self as *mut dyn LakeMeta;
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: this was previously accepted by the compiler but was changed recently
[INFO] [stdout]     = help: see <https://github.com/rust-lang/rust/issues/141402> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lake/memory/writer.rs:10:28
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub unsafe fn write_to(mut dst: *mut u8, mut src: *const u8, mut len: usize) {
[INFO] [stdout]    |                            ----^^^
[INFO] [stdout]    |                            |
[INFO] [stdout]    |                            help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lake/memory/writer.rs:10:46
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub unsafe fn write_to(mut dst: *mut u8, mut src: *const u8, mut len: usize) {
[INFO] [stdout]    |                                              ----^^^
[INFO] [stdout]    |                                              |
[INFO] [stdout]    |                                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lake/memory/writer.rs:10:66
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub unsafe fn write_to(mut dst: *mut u8, mut src: *const u8, mut len: usize) {
[INFO] [stdout]    |                                                                  ----^^^
[INFO] [stdout]    |                                                                  |
[INFO] [stdout]    |                                                                  help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lake` (lib) due to 1 previous error; 6 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "3692682d87fe1ba27baca242ac6d3cef21e142a96bb5188d6d83f056fcabc81a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3692682d87fe1ba27baca242ac6d3cef21e142a96bb5188d6d83f056fcabc81a", kill_on_drop: false }`
[INFO] [stdout] 3692682d87fe1ba27baca242ac6d3cef21e142a96bb5188d6d83f056fcabc81a
