[INFO] fetching crate microchassis 0.0.6...
[INFO] checking microchassis-0.0.6 against 52995a223f2919dd3e2e427231db90a257350ded for pr-129249-4
[INFO] extracting crate microchassis 0.0.6 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate microchassis 0.0.6
[INFO] finished tweaking crates.io crate microchassis 0.0.6
[INFO] tweaked toml for crates.io crate microchassis 0.0.6 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate microchassis 0.0.6 on toolchain 52995a223f2919dd3e2e427231db90a257350ded
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate microchassis 0.0.6 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" "+52995a223f2919dd3e2e427231db90a257350ded" "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/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:c0af3998e971868164375a7dfb646c9933ddd1a3bdb00fa2041266763dc1eeab" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 45e29fb66ac7be40e6178ee122221d570dc2de67de19a8117ae17b100fc28f73
[INFO] running `Command { std: "docker" "start" "45e29fb66ac7be40e6178ee122221d570dc2de67de19a8117ae17b100fc28f73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "45e29fb66ac7be40e6178ee122221d570dc2de67de19a8117ae17b100fc28f73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "45e29fb66ac7be40e6178ee122221d570dc2de67de19a8117ae17b100fc28f73" "/opt/rustwide/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "45e29fb66ac7be40e6178ee122221d570dc2de67de19a8117ae17b100fc28f73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "45e29fb66ac7be40e6178ee122221d570dc2de67de19a8117ae17b100fc28f73" "/opt/rustwide/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling libc v0.2.159
[INFO] [stderr]    Compiling rustix v0.38.37
[INFO] [stderr]     Checking bitflags v2.6.0
[INFO] [stderr]     Checking gimli v0.31.0
[INFO] [stderr]     Checking adler2 v2.0.0
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]    Compiling thiserror v1.0.64
[INFO] [stderr]     Checking bytes v1.7.2
[INFO] [stderr]    Compiling cc v1.1.21
[INFO] [stderr]     Checking fastrand v2.1.1
[INFO] [stderr]     Checking rustc-demangle v0.1.24
[INFO] [stderr]     Checking miniz_oxide v0.8.0
[INFO] [stderr]     Checking object v0.36.4
[INFO] [stderr]     Checking http v1.1.0
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling tikv-jemalloc-sys v0.6.0+5.3.0-1-ge13ca993e8ccb9ba9847cc330696e02839f328f7
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]     Checking tempfile v3.12.0
[INFO] [stderr]     Checking addr2line v0.24.1
[INFO] [stderr]     Checking backtrace v0.3.74
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling thiserror-impl v1.0.64
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking tikv-jemalloc-ctl v0.6.0
[INFO] [stderr]     Checking tikv-jemallocator v0.6.0
[INFO] [stderr]     Checking microchassis v0.0.6 (/opt/rustwide/workdir)
[INFO] [stdout] error: useless conversion to the same type: `mallctl::Error`
[INFO] [stdout]    --> src/profiling/mallctl.rs:143:18
[INFO] [stdout]     |
[INFO] [stdout] 143 |         unsafe { write_mib_ptr(&*MIB_PROF_RESET, value).map_err(Into::into) }
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]     = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 143 -         unsafe { write_mib_ptr(&*MIB_PROF_RESET, value).map_err(Into::into) }
[INFO] [stdout] 143 +         unsafe { write_mib_ptr(&*MIB_PROF_RESET, value) }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this creates a dangling pointer because temporary `Vec<u8>` is dropped at end of statement
[INFO] [stdout]    --> src/profiling/mallctl.rs:163:68
[INFO] [stdout]     |
[INFO] [stdout] 163 |             Some(s) => ffi::CString::new(s)?.into_bytes_with_nul().as_ptr(),
[INFO] [stdout]     |                        ------------------------------------------- ^^^^^^ pointer created here
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        this `Vec<u8>` is dropped at end of statement
[INFO] [stdout]     |
[INFO] [stdout]     = help: bind the `Vec<u8>` to a variable such that it outlives the pointer returned by `as_ptr`
[INFO] [stdout]     = note: a dangling pointer is safe, but dereferencing one is undefined behavior
[INFO] [stdout]     = note: returning a pointer to a local variable will always result in a dangling pointer
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/reference/destructors.html>
[INFO] [stdout]     = note: `#[warn(dangling_pointers_from_temporaries)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `mallctl::Error`
[INFO] [stdout]    --> src/profiling/mallctl.rs:143:18
[INFO] [stdout]     |
[INFO] [stdout] 143 |         unsafe { write_mib_ptr(&*MIB_PROF_RESET, value).map_err(Into::into) }
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]     = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 143 -         unsafe { write_mib_ptr(&*MIB_PROF_RESET, value).map_err(Into::into) }
[INFO] [stdout] 143 +         unsafe { write_mib_ptr(&*MIB_PROF_RESET, value) }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this creates a dangling pointer because temporary `Vec<u8>` is dropped at end of statement
[INFO] [stdout]    --> src/profiling/mallctl.rs:163:68
[INFO] [stdout]     |
[INFO] [stdout] 163 |             Some(s) => ffi::CString::new(s)?.into_bytes_with_nul().as_ptr(),
[INFO] [stdout]     |                        ------------------------------------------- ^^^^^^ pointer created here
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        this `Vec<u8>` is dropped at end of statement
[INFO] [stdout]     |
[INFO] [stdout]     = help: bind the `Vec<u8>` to a variable such that it outlives the pointer returned by `as_ptr`
[INFO] [stdout]     = note: a dangling pointer is safe, but dereferencing one is undefined behavior
[INFO] [stdout]     = note: returning a pointer to a local variable will always result in a dangling pointer
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/reference/destructors.html>
[INFO] [stdout]     = note: `#[warn(dangling_pointers_from_temporaries)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `microchassis` (lib test) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `microchassis` (lib) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "45e29fb66ac7be40e6178ee122221d570dc2de67de19a8117ae17b100fc28f73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45e29fb66ac7be40e6178ee122221d570dc2de67de19a8117ae17b100fc28f73", kill_on_drop: false }`
[INFO] [stdout] 45e29fb66ac7be40e6178ee122221d570dc2de67de19a8117ae17b100fc28f73
