[INFO] fetching crate mvutils 0.7.6...
[INFO] checking mvutils-0.7.6 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate mvutils 0.7.6 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate mvutils 0.7.6 on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mvutils 0.7.6
[INFO] finished tweaking crates.io crate mvutils 0.7.6
[INFO] tweaked toml for crates.io crate mvutils 0.7.6 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 34 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ef91c8dabec7e016742775ebcd941e5f4fab7cf876b1fbc5881f3cd6961eb968
[INFO] running `Command { std: "docker" "start" "-a" "ef91c8dabec7e016742775ebcd941e5f4fab7cf876b1fbc5881f3cd6961eb968", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef91c8dabec7e016742775ebcd941e5f4fab7cf876b1fbc5881f3cd6961eb968", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef91c8dabec7e016742775ebcd941e5f4fab7cf876b1fbc5881f3cd6961eb968", kill_on_drop: false }`
[INFO] [stdout] ef91c8dabec7e016742775ebcd941e5f4fab7cf876b1fbc5881f3cd6961eb968
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Dtail_expr_drop_order" "-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e5fb51296f87d5ea68e9b40de07805e4b5056c8de68da849b18fd6cf1c60b2e1
[INFO] running `Command { std: "docker" "start" "-a" "e5fb51296f87d5ea68e9b40de07805e4b5056c8de68da849b18fd6cf1c60b2e1", kill_on_drop: false }`
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking once_cell v1.19.0
[INFO] [stderr]     Checking allocator-api2 v0.2.18
[INFO] [stderr]     Checking bytebuffer v2.3.0
[INFO] [stderr]    Compiling syn v2.0.79
[INFO] [stderr]     Checking parking_lot_core v0.9.10
[INFO] [stderr]     Checking parking_lot v0.12.3
[INFO] [stderr]     Checking hashbrown v0.14.5
[INFO] [stderr]    Compiling mvutils-proc-macro v0.4.0
[INFO] [stderr]     Checking mvutils v0.7.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ordefault.rs:33:13
[INFO] [stdout]    |
[INFO] [stdout] 33 |         let mut am = self.inner.as_mut();
[INFO] [stdout]    |             ----^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/lib.rs:110:21
[INFO] [stdout]     |
[INFO] [stdout] 110 |                 for i in 0..10 {
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ordefault.rs:33:13
[INFO] [stdout]    |
[INFO] [stdout] 33 |         let mut am = self.inner.as_mut();
[INFO] [stdout]    |             ----^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.84s
[INFO] running `Command { std: "docker" "inspect" "e5fb51296f87d5ea68e9b40de07805e4b5056c8de68da849b18fd6cf1c60b2e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5fb51296f87d5ea68e9b40de07805e4b5056c8de68da849b18fd6cf1c60b2e1", kill_on_drop: false }`
[INFO] [stdout] e5fb51296f87d5ea68e9b40de07805e4b5056c8de68da849b18fd6cf1c60b2e1