[INFO] cloning repository https://github.com/cloudflare/mmap-sync [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cloudflare/mmap-sync" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcloudflare%2Fmmap-sync", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcloudflare%2Fmmap-sync'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 20826943e6e95f6e28d1a4496d1621cebd4206a2 [INFO] checking cloudflare/mmap-sync against try#93086cfebfccb79083c59d0d3b2052944bba643c for pr-146440-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcloudflare%2Fmmap-sync" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/cloudflare/mmap-sync [INFO] finished tweaking git repo https://github.com/cloudflare/mmap-sync [INFO] tweaked toml for git repo https://github.com/cloudflare/mmap-sync written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/cloudflare/mmap-sync on toolchain 93086cfebfccb79083c59d0d3b2052944bba643c [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "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" "+93086cfebfccb79083c59d0d3b2052944bba643c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 204 packages to latest compatible versions [INFO] [stderr] Adding bytecheck v0.6.12 (available: v0.8.2) [INFO] [stderr] Adding criterion v0.5.1 (available: v0.8.2) [INFO] [stderr] Adding rand v0.8.6 (available: v0.10.1) [INFO] [stderr] Adding rkyv v0.7.46 (available: v0.8.16) [INFO] [stderr] Adding thiserror v1.0.69 (available: v2.0.18) [INFO] [stderr] Adding wyhash v0.5.0 (available: v0.6.0) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] da2bb965901fa50496164f2535a892d839f0e42e990a32fb62b240dc00884383 [INFO] running `Command { std: "docker" "start" "-a" "da2bb965901fa50496164f2535a892d839f0e42e990a32fb62b240dc00884383", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "da2bb965901fa50496164f2535a892d839f0e42e990a32fb62b240dc00884383", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "da2bb965901fa50496164f2535a892d839f0e42e990a32fb62b240dc00884383", kill_on_drop: false }` [INFO] [stdout] da2bb965901fa50496164f2535a892d839f0e42e990a32fb62b240dc00884383 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 2cbbe2bf9061b970667b9554e5bb56f7f7abaca9225866fee4372cf4dec9aabe [INFO] running `Command { std: "docker" "start" "-a" "2cbbe2bf9061b970667b9554e5bb56f7f7abaca9225866fee4372cf4dec9aabe", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.186 [INFO] [stderr] Compiling zerocopy v0.8.50 [INFO] [stderr] Compiling getrandom v0.4.2 [INFO] [stderr] Checking once_cell v1.21.4 [INFO] [stderr] Compiling rustix v1.1.4 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Compiling getrandom v0.3.4 [INFO] [stderr] Compiling bitflags v2.11.1 [INFO] [stderr] Checking memchr v2.8.1 [INFO] [stderr] Compiling rustix v0.38.44 [INFO] [stderr] Compiling serde_core v1.0.228 [INFO] [stderr] Compiling protobuf v3.7.2 [INFO] [stderr] Compiling linux-raw-sys v0.4.15 [INFO] [stderr] Compiling syn v2.0.117 [INFO] [stderr] Compiling linux-raw-sys v0.12.1 [INFO] [stderr] Compiling autocfg v1.5.1 [INFO] [stderr] Compiling anyhow v1.0.102 [INFO] [stderr] Compiling aho-corasick v1.1.4 [INFO] [stderr] Checking itoa v1.0.18 [INFO] [stderr] Compiling hashbrown v0.17.1 [INFO] [stderr] Compiling home v0.5.12 [INFO] [stderr] Compiling regex-syntax v0.8.10 [INFO] [stderr] Compiling num-traits v0.2.19 [INFO] [stderr] Compiling either v1.16.0 [INFO] [stderr] Compiling serde v1.0.228 [INFO] [stderr] Compiling zmij v1.0.21 [INFO] [stderr] Compiling fastrand v2.4.1 [INFO] [stderr] Compiling shlex v2.0.1 [INFO] [stderr] Compiling indexmap v2.14.0 [INFO] [stderr] Compiling serde_json v1.0.150 [INFO] [stderr] Compiling bytecheck v0.6.12 [INFO] [stderr] Compiling log v0.4.30 [INFO] [stderr] Compiling cc v1.2.63 [INFO] [stderr] Checking getrandom v0.2.17 [INFO] [stderr] Checking memmap2 v0.9.10 [INFO] [stderr] Checking rand_core v0.9.5 [INFO] [stderr] Checking rand_core v0.6.4 [INFO] [stderr] Checking anstyle v1.0.14 [INFO] [stderr] Compiling cpp_demangle v0.4.5 [INFO] [stderr] Checking clap_lex v1.1.0 [INFO] [stderr] Checking simdutf8 v0.1.5 [INFO] [stderr] Checking uuid v1.23.2 [INFO] [stderr] Checking ciborium-io v0.2.2 [INFO] [stderr] Compiling object v0.37.3 [INFO] [stderr] Compiling rend v0.4.2 [INFO] [stderr] Compiling tempfile v3.27.0 [INFO] [stderr] Checking plotters-backend v0.3.7 [INFO] [stderr] Checking debugid v0.8.0 [INFO] [stderr] Checking clap_builder v4.6.0 [INFO] [stderr] Checking ahash v0.7.8 [INFO] [stderr] Checking is-terminal v0.4.17 [INFO] [stderr] Checking itertools v0.10.5 [INFO] [stderr] Checking stable_deref_trait v1.2.1 [INFO] [stderr] Checking plotters-svg v0.3.7 [INFO] [stderr] Compiling symbolic-demangle v12.18.3 [INFO] [stderr] Checking bytemuck v1.25.0 [INFO] [stderr] Checking gimli v0.32.3 [INFO] [stderr] Compiling rkyv v0.7.46 [INFO] [stderr] Checking cast v0.3.0 [INFO] [stderr] Compiling regex-automata v0.4.14 [INFO] [stderr] Checking rgb v0.8.53 [INFO] [stderr] Checking plotters v0.3.7 [INFO] [stderr] Checking symbolic-common v12.18.3 [INFO] [stderr] Compiling which v4.4.2 [INFO] [stderr] Compiling thiserror v2.0.18 [INFO] [stderr] Checking miniz_oxide v0.8.9 [INFO] [stderr] Checking hashbrown v0.12.3 [INFO] [stderr] Compiling findshlibs v0.10.2 [INFO] [stderr] Checking num-format v0.4.4 [INFO] [stderr] Checking rayon v1.12.0 [INFO] [stderr] Checking clap v4.6.1 [INFO] [stderr] Checking wait-timeout v0.2.1 [INFO] [stderr] Checking quick-xml v0.26.0 [INFO] [stderr] Checking criterion-plot v0.5.0 [INFO] [stderr] Checking bit-vec v0.8.0 [INFO] [stderr] Checking quick-error v1.2.3 [INFO] [stderr] Checking anes v0.1.6 [INFO] [stderr] Checking oorandom v11.1.5 [INFO] [stderr] Checking seahash v4.1.0 [INFO] [stderr] Checking str_stack v0.1.1 [INFO] [stderr] Checking bit-set v0.8.0 [INFO] [stderr] Checking rusty-fork v0.3.1 [INFO] [stderr] Checking nix v0.26.4 [INFO] [stderr] Checking spin v0.10.0 [INFO] [stderr] Checking rand_xorshift v0.4.0 [INFO] [stderr] Checking rand v0.9.4 [INFO] [stderr] Checking wyhash v0.5.0 [INFO] [stderr] Checking unarray v0.1.4 [INFO] [stderr] Checking smallvec v1.15.1 [INFO] [stderr] Checking regex v1.12.3 [INFO] [stderr] Compiling ptr_meta_derive v0.1.4 [INFO] [stderr] Compiling bytecheck_derive v0.6.12 [INFO] [stderr] Compiling rkyv_derive v0.7.46 [INFO] [stderr] Compiling zerocopy-derive v0.8.50 [INFO] [stderr] Compiling thiserror-impl v1.0.69 [INFO] [stderr] Compiling serde_derive v1.0.228 [INFO] [stderr] Compiling equator-macro v0.4.2 [INFO] [stderr] Compiling thiserror-impl v2.0.18 [INFO] [stderr] Checking ptr_meta v0.1.4 [INFO] [stderr] Checking addr2line v0.25.1 [INFO] [stderr] Checking equator v0.4.2 [INFO] [stderr] Checking aligned-vec v0.6.4 [INFO] [stderr] Compiling thiserror v1.0.69 [INFO] [stderr] Compiling protobuf-support v3.7.2 [INFO] [stderr] Checking backtrace v0.3.76 [INFO] [stderr] Checking tinytemplate v1.2.1 [INFO] [stderr] Compiling protobuf-parse v3.7.2 [INFO] [stderr] Checking ppv-lite86 v0.2.21 [INFO] [stderr] Checking half v2.7.1 [INFO] [stderr] Checking ahash v0.8.12 [INFO] [stderr] Checking inferno v0.11.21 [INFO] [stderr] Checking rand_chacha v0.9.0 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking ciborium-ll v0.2.2 [INFO] [stderr] Checking rand v0.8.6 [INFO] [stderr] Checking proptest v1.11.0 [INFO] [stderr] Checking ciborium v0.2.2 [INFO] [stderr] Checking mmap-sync v2.0.4 (/opt/rustwide/workdir) [INFO] [stdout] error: struct `SingleWriter` is never constructed [INFO] [stdout] --> src/locks.rs:103:12 [INFO] [stdout] | [INFO] [stdout] 103 | pub struct SingleWriter { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it [INFO] [stdout] = note: `#[deny(unused_unconstructable_pub_structs)]` (part of `#[deny(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: struct `SingleWriterGuard` is never constructed [INFO] [stdout] --> src/locks.rs:152:12 [INFO] [stdout] | [INFO] [stdout] 152 | pub struct SingleWriterGuard<'a>(&'a mut MmapMut); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `mmap-sync` (lib) due to 2 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "2cbbe2bf9061b970667b9554e5bb56f7f7abaca9225866fee4372cf4dec9aabe", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2cbbe2bf9061b970667b9554e5bb56f7f7abaca9225866fee4372cf4dec9aabe", kill_on_drop: false }` [INFO] [stdout] 2cbbe2bf9061b970667b9554e5bb56f7f7abaca9225866fee4372cf4dec9aabe