[INFO] fetching crate mpvss-rs 0.2.7... [INFO] building mpvss-rs-0.2.7 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523 [INFO] extracting crate mpvss-rs 0.2.7 into /workspace/builds/worker-5-tc1/source [INFO] validating manifest of crates.io crate mpvss-rs 0.2.7 on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate mpvss-rs 0.2.7 [INFO] finished tweaking crates.io crate mpvss-rs 0.2.7 [INFO] tweaked toml for crates.io crate mpvss-rs 0.2.7 written to /workspace/builds/worker-5-tc1/source/Cargo.toml [INFO] crate crates.io crate mpvss-rs 0.2.7 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded num-primes v0.1.2 [INFO] [stderr] Downloaded rayon v1.6.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 9e4cda5981f4de64239417a6cc225658bcdfb28378041428b0160a46022f62b4 [INFO] running `Command { std: "docker" "start" "-a" "9e4cda5981f4de64239417a6cc225658bcdfb28378041428b0160a46022f62b4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "9e4cda5981f4de64239417a6cc225658bcdfb28378041428b0160a46022f62b4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9e4cda5981f4de64239417a6cc225658bcdfb28378041428b0160a46022f62b4", kill_on_drop: false }` [INFO] [stdout] 9e4cda5981f4de64239417a6cc225658bcdfb28378041428b0160a46022f62b4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9692240eae52add85407d6d2c40dca1b1e022fe9a505d1f657235d14d71bd3bc [INFO] running `Command { std: "docker" "start" "-a" "9692240eae52add85407d6d2c40dca1b1e022fe9a505d1f657235d14d71bd3bc", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.1.0 [INFO] [stderr] Compiling libc v0.2.138 [INFO] [stderr] Compiling crossbeam-utils v0.8.14 [INFO] [stderr] Compiling typenum v1.15.0 [INFO] [stderr] Compiling scopeguard v1.1.0 [INFO] [stderr] Compiling rand_core v0.4.2 [INFO] [stderr] Compiling rayon-core v1.10.1 [INFO] [stderr] Compiling opaque-debug v0.3.0 [INFO] [stderr] Compiling cpufeatures v0.2.5 [INFO] [stderr] Compiling either v1.8.0 [INFO] [stderr] Compiling generic-array v0.14.6 [INFO] [stderr] Compiling rand_core v0.3.1 [INFO] [stderr] Compiling num-traits v0.2.15 [INFO] [stderr] Compiling num-integer v0.1.45 [INFO] [stderr] Compiling memoffset v0.7.1 [INFO] [stderr] Compiling crossbeam-epoch v0.9.13 [INFO] [stderr] Compiling num-complex v0.2.4 [INFO] [stderr] Compiling num-rational v0.2.4 [INFO] [stderr] Compiling num-iter v0.1.43 [INFO] [stderr] Compiling num-bigint v0.2.6 [INFO] [stderr] Compiling crossbeam-channel v0.5.6 [INFO] [stderr] Compiling crossbeam-deque v0.8.2 [INFO] [stderr] Compiling num_cpus v1.14.0 [INFO] [stderr] Compiling rand v0.5.6 [INFO] [stderr] Compiling block-buffer v0.9.0 [INFO] [stderr] Compiling digest v0.9.0 [INFO] [stderr] Compiling sha2 v0.9.9 [INFO] [stderr] Compiling rayon v1.6.0 [INFO] [stderr] Compiling num v0.2.1 [INFO] [stderr] Compiling num-primes v0.1.2 [INFO] [stderr] Compiling mpvss-rs v0.2.7 (/opt/rustwide/workdir) [INFO] [stdout] warning: fields `a1` and `a2` are never read [INFO] [stdout] --> src/dleq.rs:102:9 [INFO] [stdout] | [INFO] [stdout] 92 | pub struct DLEQ { [INFO] [stdout] | ---- fields in this struct [INFO] [stdout] ... [INFO] [stdout] 102 | pub a1: BigInt, [INFO] [stdout] | ^^ [INFO] [stdout] 103 | pub a2: BigInt, [INFO] [stdout] | ^^ [INFO] [stdout] | [INFO] [stdout] = note: `DLEQ` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.85s [INFO] running `Command { std: "docker" "inspect" "9692240eae52add85407d6d2c40dca1b1e022fe9a505d1f657235d14d71bd3bc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9692240eae52add85407d6d2c40dca1b1e022fe9a505d1f657235d14d71bd3bc", kill_on_drop: false }` [INFO] [stdout] 9692240eae52add85407d6d2c40dca1b1e022fe9a505d1f657235d14d71bd3bc [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 2f048528094698dc385ecc27badef49866e94027f5978a0601556d4e0fd97c33 [INFO] running `Command { std: "docker" "start" "-a" "2f048528094698dc385ecc27badef49866e94027f5978a0601556d4e0fd97c33", kill_on_drop: false }` [INFO] [stdout] warning: fields `a1` and `a2` are never read [INFO] [stdout] --> src/dleq.rs:102:9 [INFO] [stdout] | [INFO] [stdout] 92 | pub struct DLEQ { [INFO] [stdout] | ---- fields in this struct [INFO] [stdout] ... [INFO] [stdout] 102 | pub a1: BigInt, [INFO] [stdout] | ^^ [INFO] [stdout] 103 | pub a2: BigInt, [INFO] [stdout] | ^^ [INFO] [stdout] | [INFO] [stdout] = note: `DLEQ` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling mpvss-rs v0.2.7 (/opt/rustwide/workdir) [INFO] [stdout] warning: fields `a1` and `a2` are never read [INFO] [stdout] --> src/dleq.rs:102:9 [INFO] [stdout] | [INFO] [stdout] 92 | pub struct DLEQ { [INFO] [stdout] | ---- fields in this struct [INFO] [stdout] ... [INFO] [stdout] 102 | pub a1: BigInt, [INFO] [stdout] | ^^ [INFO] [stdout] 103 | pub a2: BigInt, [INFO] [stdout] | ^^ [INFO] [stdout] | [INFO] [stdout] = note: `DLEQ` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing [INFO] [stdout] --> src/dleq.rs:218:9 [INFO] [stdout] | [INFO] [stdout] 218 | drop(length); [INFO] [stdout] | ^^^^^------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `i64` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dropping_copy_types)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 218 - drop(length); [INFO] [stdout] 218 + let _ = length; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing [INFO] [stdout] --> src/mpvss.rs:349:9 [INFO] [stdout] | [INFO] [stdout] 349 | drop(length); [INFO] [stdout] | ^^^^^------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `i64` [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 349 - drop(length); [INFO] [stdout] 349 + let _ = length; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.77s [INFO] running `Command { std: "docker" "inspect" "2f048528094698dc385ecc27badef49866e94027f5978a0601556d4e0fd97c33", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2f048528094698dc385ecc27badef49866e94027f5978a0601556d4e0fd97c33", kill_on_drop: false }` [INFO] [stdout] 2f048528094698dc385ecc27badef49866e94027f5978a0601556d4e0fd97c33