[INFO] fetching crate filter_ast 0.2.1...
[INFO] checking filter_ast-0.2.1 against a5689b034ad287112f709693384a37f1377eb9cc for pr-129249-3
[INFO] extracting crate filter_ast 0.2.1 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate filter_ast 0.2.1
[INFO] finished tweaking crates.io crate filter_ast 0.2.1
[INFO] tweaked toml for crates.io crate filter_ast 0.2.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate filter_ast 0.2.1 on toolchain a5689b034ad287112f709693384a37f1377eb9cc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate filter_ast 0.2.1 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" "+a5689b034ad287112f709693384a37f1377eb9cc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] f95b6b0f83f63a75b8c392fc77bf21aba75efac58a01cb71bca7ada686ca30ed
[INFO] running `Command { std: "docker" "start" "f95b6b0f83f63a75b8c392fc77bf21aba75efac58a01cb71bca7ada686ca30ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f95b6b0f83f63a75b8c392fc77bf21aba75efac58a01cb71bca7ada686ca30ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f95b6b0f83f63a75b8c392fc77bf21aba75efac58a01cb71bca7ada686ca30ed" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f95b6b0f83f63a75b8c392fc77bf21aba75efac58a01cb71bca7ada686ca30ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f95b6b0f83f63a75b8c392fc77bf21aba75efac58a01cb71bca7ada686ca30ed" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking filter_ast v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: useless conversion to the same type: `Expr<F2, P2, O2>`
[INFO] [stdout]    --> src/lib.rs:272:37
[INFO] [stdout]     |
[INFO] [stdout] 272 |             Expr::Clause(clause) => transform(clause).into(),
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]     = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 272 -             Expr::Clause(clause) => transform(clause).into(),
[INFO] [stdout] 272 +             Expr::Clause(clause) => transform(clause),
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 272 -             Expr::Clause(clause) => transform(clause).into(),
[INFO] [stdout] 272 +             Expr::Clause(clause) => <Expr<F2, P2, O2> as Into<_>>::into(transform(clause)),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]   --> src/visit.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |         std::mem::drop(clause);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^------^
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        argument has type `&Clause<F, P, O>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 12 -         std::mem::drop(clause);
[INFO] [stdout] 12 +         let _ = clause;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `filter_ast` (lib) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: useless conversion to the same type: `Expr<F2, P2, O2>`
[INFO] [stdout]    --> src/lib.rs:272:37
[INFO] [stdout]     |
[INFO] [stdout] 272 |             Expr::Clause(clause) => transform(clause).into(),
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]     = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 272 -             Expr::Clause(clause) => transform(clause).into(),
[INFO] [stdout] 272 +             Expr::Clause(clause) => transform(clause),
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 272 -             Expr::Clause(clause) => transform(clause).into(),
[INFO] [stdout] 272 +             Expr::Clause(clause) => <Expr<F2, P2, O2> as Into<_>>::into(transform(clause)),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]   --> src/visit.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |         std::mem::drop(clause);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^------^
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        argument has type `&Clause<F, P, O>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 12 -         std::mem::drop(clause);
[INFO] [stdout] 12 +         let _ = clause;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> src/lib.rs:607:42
[INFO] [stdout]     |
[INFO] [stdout] 607 |                         clause.operator().clone(),
[INFO] [stdout]     |                                          ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> src/lib.rs:608:41
[INFO] [stdout]     |
[INFO] [stdout] 608 |                         clause.operand().clone(),
[INFO] [stdout]     |                                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> src/lib.rs:612:42
[INFO] [stdout]     |
[INFO] [stdout] 612 |                         clause.operator().clone(),
[INFO] [stdout]     |                                          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> src/lib.rs:613:41
[INFO] [stdout]     |
[INFO] [stdout] 613 |                         clause.operand().clone(),
[INFO] [stdout]     |                                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> src/lib.rs:617:42
[INFO] [stdout]     |
[INFO] [stdout] 617 |                         clause.operator().clone(),
[INFO] [stdout]     |                                          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> src/lib.rs:618:41
[INFO] [stdout]     |
[INFO] [stdout] 618 |                         clause.operand().clone(),
[INFO] [stdout]     |                                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> src/lib.rs:622:42
[INFO] [stdout]     |
[INFO] [stdout] 622 |                         clause.operator().clone(),
[INFO] [stdout]     |                                          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> src/lib.rs:623:41
[INFO] [stdout]     |
[INFO] [stdout] 623 |                         clause.operand().clone(),
[INFO] [stdout]     |                                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `filter_ast` (lib test) due to 1 previous error; 9 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "f95b6b0f83f63a75b8c392fc77bf21aba75efac58a01cb71bca7ada686ca30ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f95b6b0f83f63a75b8c392fc77bf21aba75efac58a01cb71bca7ada686ca30ed", kill_on_drop: false }`
[INFO] [stdout] f95b6b0f83f63a75b8c392fc77bf21aba75efac58a01cb71bca7ada686ca30ed
