[INFO] fetching crate onlinematching 0.3.2...
[INFO] checking onlinematching-0.3.2 against master#2e6fc425411280c658d852813de01c5157255088 for pr-128013
[INFO] extracting crate onlinematching 0.3.2 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate onlinematching 0.3.2 on toolchain 2e6fc425411280c658d852813de01c5157255088
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2e6fc425411280c658d852813de01c5157255088" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate onlinematching 0.3.2
[INFO] finished tweaking crates.io crate onlinematching 0.3.2
[INFO] tweaked toml for crates.io crate onlinematching 0.3.2 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2e6fc425411280c658d852813de01c5157255088" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 24 packages to latest compatible versions
[INFO] [stderr]       Adding fixedbitset v0.4.2 (latest: v0.5.7)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.1+wasi-0.2.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2e6fc425411280c658d852813de01c5157255088" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+2e6fc425411280c658d852813de01c5157255088" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c9905909143887ff29fb3108ddde75ec8af049f9436df0820558e9a0947c2ca4
[INFO] running `Command { std: "docker" "start" "-a" "c9905909143887ff29fb3108ddde75ec8af049f9436df0820558e9a0947c2ca4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c9905909143887ff29fb3108ddde75ec8af049f9436df0820558e9a0947c2ca4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9905909143887ff29fb3108ddde75ec8af049f9436df0820558e9a0947c2ca4", kill_on_drop: false }`
[INFO] [stdout] c9905909143887ff29fb3108ddde75ec8af049f9436df0820558e9a0947c2ca4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+2e6fc425411280c658d852813de01c5157255088" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cb66196fa501bf753a1a0b880c56d5a32289219dc59fa630c166719f2fdee5aa
[INFO] running `Command { std: "docker" "start" "-a" "cb66196fa501bf753a1a0b880c56d5a32289219dc59fa630c166719f2fdee5aa", kill_on_drop: false }`
[INFO] [stderr]    Compiling libm v0.2.8
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling matrixmultiply v0.3.8
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]     Checking equivalent v1.0.1
[INFO] [stderr]     Checking hashbrown v0.14.5
[INFO] [stderr]     Checking fixedbitset v0.4.2
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]     Checking indexmap v2.2.6
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking petgraph v0.6.5
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking ndarray v0.15.6
[INFO] [stderr]     Checking rand_distr v0.4.3
[INFO] [stderr]     Checking ndarray-rand v0.14.0
[INFO] [stderr]     Checking onlinematching v0.3.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]   --> src/papers/reuseableresource/identical.rs:50:13
[INFO] [stdout]    |
[INFO] [stdout] 50 |             drop(alg_choose);
[INFO] [stdout]    |             ^^^^^----------^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  argument has type `Option<usize>`
[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] 50 -             drop(alg_choose);
[INFO] [stdout] 50 +             let _ = alg_choose;
[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/papers/reuseableresource/identical.rs:50:13
[INFO] [stdout]    |
[INFO] [stdout] 50 |             drop(alg_choose);
[INFO] [stdout]    |             ^^^^^----------^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  argument has type `Option<usize>`
[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] 50 -             drop(alg_choose);
[INFO] [stdout] 50 +             let _ = alg_choose;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [optimized + debuginfo] target(s) in 2.86s
[INFO] running `Command { std: "docker" "inspect" "cb66196fa501bf753a1a0b880c56d5a32289219dc59fa630c166719f2fdee5aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb66196fa501bf753a1a0b880c56d5a32289219dc59fa630c166719f2fdee5aa", kill_on_drop: false }`
[INFO] [stdout] cb66196fa501bf753a1a0b880c56d5a32289219dc59fa630c166719f2fdee5aa