[INFO] fetching crate mmap-sync 2.0.4...
[INFO] checking mmap-sync-2.0.4 against try#0611f7de057c584b8771102fde7aed6c70c71d3b for pr-146440
[INFO] extracting crate mmap-sync 2.0.4 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate mmap-sync 2.0.4
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate mmap-sync 2.0.4
[INFO] tweaked toml for crates.io crate mmap-sync 2.0.4 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mmap-sync 2.0.4 on toolchain 0611f7de057c584b8771102fde7aed6c70c71d3b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mmap-sync 2.0.4 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" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bac17cd86997287278859481d23272e8d55dcd5c7f939c74e7ddd127df2b0d67
[INFO] running `Command { std: "docker" "start" "-a" "bac17cd86997287278859481d23272e8d55dcd5c7f939c74e7ddd127df2b0d67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bac17cd86997287278859481d23272e8d55dcd5c7f939c74e7ddd127df2b0d67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bac17cd86997287278859481d23272e8d55dcd5c7f939c74e7ddd127df2b0d67", kill_on_drop: false }`
[INFO] [stdout] bac17cd86997287278859481d23272e8d55dcd5c7f939c74e7ddd127df2b0d67
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a3067ecdbcea68792f1ca2329bc4ca730585734514e67455ec86ecba79017134
[INFO] running `Command { std: "docker" "start" "-a" "a3067ecdbcea68792f1ca2329bc4ca730585734514e67455ec86ecba79017134", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.184
[INFO] [stderr]    Compiling zerocopy v0.8.48
[INFO] [stderr]    Compiling protobuf v3.7.2
[INFO] [stderr]    Compiling linux-raw-sys v0.12.1
[INFO] [stderr]    Compiling hashbrown v0.16.1
[INFO] [stderr]    Compiling zerocopy-derive v0.8.48
[INFO] [stderr]    Compiling anyhow v1.0.102
[INFO] [stderr]    Compiling fastrand v2.4.0
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling ptr_meta_derive v0.1.4
[INFO] [stderr]    Compiling ahash v0.7.8
[INFO] [stderr]    Compiling bytecheck v0.6.12
[INFO] [stderr]    Compiling cc v1.2.59
[INFO] [stderr]    Compiling bytecheck_derive v0.6.12
[INFO] [stderr]    Compiling protobuf-support v3.7.2
[INFO] [stderr]    Compiling cpp_demangle v0.5.1
[INFO] [stderr]     Checking uuid v1.23.0
[INFO] [stderr]    Compiling rend v0.4.2
[INFO] [stderr]     Checking ptr_meta v0.1.4
[INFO] [stderr]     Checking simdutf8 v0.1.5
[INFO] [stderr]     Checking clap_builder v4.6.0
[INFO] [stderr]     Checking regex-automata v0.4.14
[INFO] [stderr]    Compiling equator-macro v0.4.2
[INFO] [stderr]    Compiling symbolic-demangle v12.17.3
[INFO] [stderr]    Compiling rkyv v0.7.46
[INFO] [stderr]    Compiling indexmap v2.13.1
[INFO] [stderr]     Checking num-format v0.4.4
[INFO] [stderr]     Checking debugid v0.8.0
[INFO] [stderr]     Checking rgb v0.8.53
[INFO] [stderr]    Compiling rustix v1.1.4
[INFO] [stderr]     Checking plotters v0.3.7
[INFO] [stderr]     Checking object v0.37.3
[INFO] [stderr]     Checking equator v0.4.2
[INFO] [stderr]    Compiling thiserror-impl v2.0.18
[INFO] [stderr]     Checking regex v1.12.3
[INFO] [stderr]    Compiling findshlibs v0.10.2
[INFO] [stderr]    Compiling rkyv_derive v0.7.46
[INFO] [stderr]     Checking quick-xml v0.26.0
[INFO] [stderr]     Checking seahash v4.1.0
[INFO] [stderr]    Compiling getrandom v0.4.2
[INFO] [stderr]     Checking aligned-vec v0.6.4
[INFO] [stderr]     Checking spin v0.10.0
[INFO] [stderr]     Checking getrandom v0.3.4
[INFO] [stderr]     Checking getrandom v0.2.17
[INFO] [stderr]     Checking memmap2 v0.9.10
[INFO] [stderr]     Checking is-terminal v0.4.17
[INFO] [stderr]     Checking clap v4.6.0
[INFO] [stderr]     Checking rand_core v0.9.5
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking tempfile v3.27.0
[INFO] [stderr]     Checking symbolic-common v12.17.3
[INFO] [stderr]     Checking wait-timeout v0.2.1
[INFO] [stderr]     Checking wyhash v0.5.0
[INFO] [stderr]     Checking rand v0.9.2
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking rand_xorshift v0.4.0
[INFO] [stderr]     Checking rusty-fork v0.3.1
[INFO] [stderr]     Checking nix v0.26.4
[INFO] [stderr]     Checking thiserror v2.0.18
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]    Compiling protobuf-parse v3.7.2
[INFO] [stderr]     Checking backtrace v0.3.76
[INFO] [stderr]    Compiling protobuf-codegen v3.7.2
[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_struct)]` (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" "a3067ecdbcea68792f1ca2329bc4ca730585734514e67455ec86ecba79017134", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3067ecdbcea68792f1ca2329bc4ca730585734514e67455ec86ecba79017134", kill_on_drop: false }`
[INFO] [stdout] a3067ecdbcea68792f1ca2329bc4ca730585734514e67455ec86ecba79017134
