[INFO] fetching crate mutringbuf 1.0.0...
[INFO] checking mutringbuf-1.0.0 against try#54cf65b8d066c082e536455049b95943cf30378f for pr-151920
[INFO] extracting crate mutringbuf 1.0.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate mutringbuf 1.0.0
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate mutringbuf 1.0.0
[INFO] tweaked toml for crates.io crate mutringbuf 1.0.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mutringbuf 1.0.0 on toolchain 54cf65b8d066c082e536455049b95943cf30378f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+54cf65b8d066c082e536455049b95943cf30378f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mutringbuf 1.0.0 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" "+54cf65b8d066c082e536455049b95943cf30378f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+54cf65b8d066c082e536455049b95943cf30378f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6b8c8875b6c636a7615b4ccb06e2dc9e6f89c3d0214a453828bbfa98c842d293
[INFO] running `Command { std: "docker" "start" "-a" "6b8c8875b6c636a7615b4ccb06e2dc9e6f89c3d0214a453828bbfa98c842d293", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6b8c8875b6c636a7615b4ccb06e2dc9e6f89c3d0214a453828bbfa98c842d293", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b8c8875b6c636a7615b4ccb06e2dc9e6f89c3d0214a453828bbfa98c842d293", kill_on_drop: false }`
[INFO] [stdout] 6b8c8875b6c636a7615b4ccb06e2dc9e6f89c3d0214a453828bbfa98c842d293
[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=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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+54cf65b8d066c082e536455049b95943cf30378f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8259891f5a6af65bfa410fb4d0bfbb6acc8dc01ae537ee859da2dac4b073a555
[INFO] running `Command { std: "docker" "start" "-a" "8259891f5a6af65bfa410fb4d0bfbb6acc8dc01ae537ee859da2dac4b073a555", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling rustix v1.0.5
[INFO] [stderr]     Checking linux-raw-sys v0.9.4
[INFO] [stderr]     Checking bitflags v2.9.0
[INFO] [stderr]    Compiling serde_json v1.0.140
[INFO] [stderr]    Compiling gungraun-macros v0.7.0
[INFO] [stderr]    Compiling proc-macro-error-attr2 v2.0.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling gungraun-runner v0.17.0
[INFO] [stderr]    Compiling gungraun v0.17.0
[INFO] [stderr]     Checking condtype v1.3.0
[INFO] [stderr]     Checking regex-lite v0.1.6
[INFO] [stderr]     Checking mutringbuf v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking terminal_size v0.4.2
[INFO] [stderr]     Checking clap_builder v4.5.36
[INFO] [stderr]     Checking clap v4.5.36
[INFO] [stderr]    Compiling proc-macro-error2 v2.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling derive_more-impl v1.0.0
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling tokio-macros v2.6.0
[INFO] [stderr]    Compiling divan-macros v0.1.21
[INFO] [stderr]     Checking divan v0.1.21
[INFO] [stderr]     Checking tokio v1.48.0
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stdout] error: not automatically applying `DerefMut` through union field to target that might have `Drop` glue
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/divan-0.1.21/src/benchmark/defer.rs:78:22
[INFO] [stdout]    |
[INFO] [stdout] 78 |                 imp!(self.inputs)
[INFO] [stdout]    |                      ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: writing to this reference calls the destructor for the old value
[INFO] [stdout]    = help: add an explicit `*` if that is desired, or call `ptr::write` to not run the destructor
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: not automatically applying `DerefMut` through union field to target that might have `Drop` glue
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/divan-0.1.21/src/benchmark/defer.rs:80:22
[INFO] [stdout]    |
[INFO] [stdout] 80 |                 imp!(self.slots)
[INFO] [stdout]    |                      ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: writing to this reference calls the destructor for the old value
[INFO] [stdout]    = help: add an explicit `*` if that is desired, or call `ptr::write` to not run the destructor
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `divan` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "8259891f5a6af65bfa410fb4d0bfbb6acc8dc01ae537ee859da2dac4b073a555", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8259891f5a6af65bfa410fb4d0bfbb6acc8dc01ae537ee859da2dac4b073a555", kill_on_drop: false }`
[INFO] [stdout] 8259891f5a6af65bfa410fb4d0bfbb6acc8dc01ae537ee859da2dac4b073a555