[INFO] fetching crate fscmp 0.2.16... [INFO] checking fscmp-0.2.16 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930 [INFO] extracting crate fscmp 0.2.16 into /workspace/builds/worker-3-tc2/source [INFO] validating manifest of crates.io crate fscmp 0.2.16 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 fscmp 0.2.16 [INFO] finished tweaking crates.io crate fscmp 0.2.16 [INFO] tweaked toml for crates.io crate fscmp 0.2.16 written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] crate crates.io crate fscmp 0.2.16 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" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] ae5041eff8b8415b003112513675c6c53472bf89f13699217b310ae4ea9c75d7 [INFO] running `Command { std: "docker" "start" "-a" "ae5041eff8b8415b003112513675c6c53472bf89f13699217b310ae4ea9c75d7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ae5041eff8b8415b003112513675c6c53472bf89f13699217b310ae4ea9c75d7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ae5041eff8b8415b003112513675c6c53472bf89f13699217b310ae4ea9c75d7", kill_on_drop: false }` [INFO] [stdout] ae5041eff8b8415b003112513675c6c53472bf89f13699217b310ae4ea9c75d7 [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 -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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] a73813d4d99d662a9385545d156ae8c60e03870a688a1ea9956c4626ea86d81e [INFO] running `Command { std: "docker" "start" "-a" "a73813d4d99d662a9385545d156ae8c60e03870a688a1ea9956c4626ea86d81e", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.62 [INFO] [stderr] Checking cfg-if v0.1.9 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling autocfg v0.1.6 [INFO] [stderr] Compiling proc-macro2 v1.0.3 [INFO] [stderr] Compiling proc-macro2 v0.4.30 [INFO] [stderr] Compiling unicode-xid v0.1.0 [INFO] [stderr] Compiling arrayvec v0.4.11 [INFO] [stderr] Checking crossbeam-utils v0.6.6 [INFO] [stderr] Checking nodrop v0.1.13 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Compiling cc v1.0.45 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Compiling num-traits v0.2.8 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Compiling getrandom v0.1.12 [INFO] [stderr] Compiling bitflags v1.1.0 [INFO] [stderr] Compiling syn v1.0.5 [INFO] [stderr] Compiling memoffset v0.5.1 [INFO] [stderr] Compiling num-integer v0.1.41 [INFO] [stderr] Compiling quote v0.6.13 [INFO] [stderr] Checking scopeguard v1.0.0 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Checking crossbeam-epoch v0.7.2 [INFO] [stderr] Compiling failure_derive v0.1.5 [INFO] [stderr] Compiling backtrace-sys v0.1.31 [INFO] [stderr] Checking unicode-width v0.1.6 [INFO] [stderr] Compiling rayon-core v1.6.0 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Compiling unicode-segmentation v1.3.0 [INFO] [stderr] Checking ppv-lite86 v0.2.5 [INFO] [stderr] Checking crossbeam-deque v0.7.1 [INFO] [stderr] Checking time v0.1.42 [INFO] [stderr] Compiling heck v0.3.1 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking dirs v1.0.5 [INFO] [stderr] Checking atty v0.2.13 [INFO] [stderr] Checking num_cpus v1.10.1 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking crossbeam-queue v0.1.2 [INFO] [stderr] Checking rustc-demangle v0.1.16 [INFO] [stderr] Checking c2-chacha v0.2.2 [INFO] [stderr] Compiling nix v0.16.0 [INFO] [stderr] Checking clap v2.33.0 [INFO] [stderr] Checking term v0.5.2 [INFO] [stderr] Checking rand_chacha v0.2.1 [INFO] [stderr] Checking chrono v0.4.9 [INFO] [stderr] Checking backtrace v0.3.37 [INFO] [stderr] Checking void v1.0.2 [INFO] [stderr] Checking either v1.5.2 [INFO] [stderr] Checking rand v0.7.0 [INFO] [stderr] Checking rayon v1.2.0 [INFO] [stderr] Checking openat v0.1.18 [INFO] [stderr] Checking same-file v1.0.5 [INFO] [stderr] Checking walkdir v2.2.9 [INFO] [stderr] Checking simplelog v0.7.1 [INFO] [stderr] Checking tempfile v3.1.0 [INFO] [stderr] Compiling synstructure v0.10.2 [INFO] [stderr] Compiling proc-macro-error v0.2.6 [INFO] [stderr] Checking failure v0.1.5 [INFO] [stderr] Compiling structopt-derive v0.3.1 [INFO] [stderr] Checking structopt v0.3.1 [INFO] [stderr] Checking fscmp v0.2.16 (/opt/rustwide/workdir) [INFO] [stdout] warning: the type `[u8; 262144]` does not permit being left uninitialized [INFO] [stdout] --> src/cmp/mod.rs:323:58 [INFO] [stdout] | [INFO] [stdout] 323 | let mut buffer1 = AlignedBuffer(unsafe { std::mem::MaybeUninit::uninit().assume_init() }); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | this code causes undefined behavior when executed [INFO] [stdout] | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done [INFO] [stdout] | [INFO] [stdout] = note: integers must be initialized [INFO] [stdout] = note: `#[warn(invalid_value)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the type `[u8; 262144]` does not permit being left uninitialized [INFO] [stdout] --> src/cmp/mod.rs:324:58 [INFO] [stdout] | [INFO] [stdout] 324 | let mut buffer2 = AlignedBuffer(unsafe { std::mem::MaybeUninit::uninit().assume_init() }); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | this code causes undefined behavior when executed [INFO] [stdout] | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done [INFO] [stdout] | [INFO] [stdout] = note: integers must be initialized [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the type `[u8; 262144]` does not permit being left uninitialized [INFO] [stdout] --> src/cmp/mod.rs:323:58 [INFO] [stdout] | [INFO] [stdout] 323 | let mut buffer1 = AlignedBuffer(unsafe { std::mem::MaybeUninit::uninit().assume_init() }); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | this code causes undefined behavior when executed [INFO] [stdout] | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done [INFO] [stdout] | [INFO] [stdout] = note: integers must be initialized [INFO] [stdout] = note: `#[warn(invalid_value)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the type `[u8; 262144]` does not permit being left uninitialized [INFO] [stdout] --> src/cmp/mod.rs:324:58 [INFO] [stdout] | [INFO] [stdout] 324 | let mut buffer2 = AlignedBuffer(unsafe { std::mem::MaybeUninit::uninit().assume_init() }); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | this code causes undefined behavior when executed [INFO] [stdout] | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done [INFO] [stdout] | [INFO] [stdout] = note: integers must be initialized [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 27.08s [INFO] running `Command { std: "docker" "inspect" "a73813d4d99d662a9385545d156ae8c60e03870a688a1ea9956c4626ea86d81e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a73813d4d99d662a9385545d156ae8c60e03870a688a1ea9956c4626ea86d81e", kill_on_drop: false }` [INFO] [stdout] a73813d4d99d662a9385545d156ae8c60e03870a688a1ea9956c4626ea86d81e