[INFO] fetching crate acyclic-network 0.2.0...
[INFO] testing acyclic-network-0.2.0 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate acyclic-network 0.2.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate acyclic-network 0.2.0
[INFO] finished tweaking crates.io crate acyclic-network 0.2.0
[INFO] tweaked toml for crates.io crate acyclic-network 0.2.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate acyclic-network 0.2.0 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 10 packages to latest compatible versions
[INFO] [stderr]       Adding fixedbitset v0.1.9 (available: v0.5.7)
[INFO] [stderr]       Adding rand v0.4.6 (available: v0.9.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fixedbitset v0.1.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 074f570fb52cdcd15a99c18f5b094e423930f40b2b7af9969ad6f7f4ac9c0364
[INFO] running `Command { std: "docker" "start" "-a" "074f570fb52cdcd15a99c18f5b094e423930f40b2b7af9969ad6f7f4ac9c0364", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "074f570fb52cdcd15a99c18f5b094e423930f40b2b7af9969ad6f7f4ac9c0364", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "074f570fb52cdcd15a99c18f5b094e423930f40b2b7af9969ad6f7f4ac9c0364", kill_on_drop: false }`
[INFO] [stdout] 074f570fb52cdcd15a99c18f5b094e423930f40b2b7af9969ad6f7f4ac9c0364
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8ac315c9bb2faae802971f9787ce67e0715486b2f1195ab6f2f88ceee64a78bc
[INFO] running `Command { std: "docker" "start" "-a" "8ac315c9bb2faae802971f9787ce67e0715486b2f1195ab6f2f88ceee64a78bc", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling fixedbitset v0.1.9
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling acyclic-network v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:184:17
[INFO] [stdout]     |
[INFO] [stdout] 184 |     type Item = (LinkRefItem<'a, N, L, EXTID>);
[INFO] [stdout]     |                 ^                            ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 184 -     type Item = (LinkRefItem<'a, N, L, EXTID>);
[INFO] [stdout] 184 +     type Item = LinkRefItem<'a, N, L, EXTID> ;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:859:20
[INFO] [stdout]     |
[INFO] [stdout] 859 |             panic!(err);
[INFO] [stdout]     |                    ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 859 |             panic!("{}", err);
[INFO] [stdout]     |                    +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:892:20
[INFO] [stdout]     |
[INFO] [stdout] 892 |             panic!(err);
[INFO] [stdout]     |                    ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 892 |             panic!("{}", err);
[INFO] [stdout]     |                    +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.17s
[INFO] running `Command { std: "docker" "inspect" "8ac315c9bb2faae802971f9787ce67e0715486b2f1195ab6f2f88ceee64a78bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ac315c9bb2faae802971f9787ce67e0715486b2f1195ab6f2f88ceee64a78bc", kill_on_drop: false }`
[INFO] [stdout] 8ac315c9bb2faae802971f9787ce67e0715486b2f1195ab6f2f88ceee64a78bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 43171e6f64d9b5eac8feaadb3ad90435916099a522bfd770e22e1104ddc87a89
[INFO] running `Command { std: "docker" "start" "-a" "43171e6f64d9b5eac8feaadb3ad90435916099a522bfd770e22e1104ddc87a89", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:184:17
[INFO] [stdout]     |
[INFO] [stdout] 184 |     type Item = (LinkRefItem<'a, N, L, EXTID>);
[INFO] [stdout]     |                 ^                            ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 184 -     type Item = (LinkRefItem<'a, N, L, EXTID>);
[INFO] [stdout] 184 +     type Item = LinkRefItem<'a, N, L, EXTID> ;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling acyclic-network v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:859:20
[INFO] [stdout]     |
[INFO] [stdout] 859 |             panic!(err);
[INFO] [stdout]     |                    ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 859 |             panic!("{}", err);
[INFO] [stdout]     |                    +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:892:20
[INFO] [stdout]     |
[INFO] [stdout] 892 |             panic!(err);
[INFO] [stdout]     |                    ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 892 |             panic!("{}", err);
[INFO] [stdout]     |                    +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:184:17
[INFO] [stdout]     |
[INFO] [stdout] 184 |     type Item = (LinkRefItem<'a, N, L, EXTID>);
[INFO] [stdout]     |                 ^                            ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 184 -     type Item = (LinkRefItem<'a, N, L, EXTID>);
[INFO] [stdout] 184 +     type Item = LinkRefItem<'a, N, L, EXTID> ;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:859:20
[INFO] [stdout]     |
[INFO] [stdout] 859 |             panic!(err);
[INFO] [stdout]     |                    ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 859 |             panic!("{}", err);
[INFO] [stdout]     |                    +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:892:20
[INFO] [stdout]     |
[INFO] [stdout] 892 |             panic!(err);
[INFO] [stdout]     |                    ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 892 |             panic!("{}", err);
[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/lib.rs:1529:9
[INFO] [stdout]      |
[INFO] [stdout] 1529 |         drop(i1);
[INFO] [stdout]      |         ^^^^^--^
[INFO] [stdout]      |              |
[INFO] [stdout]      |              argument has type `NodeIndex`
[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] 1529 -         drop(i1);
[INFO] [stdout] 1529 +         let _ = i1;
[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/lib.rs:1543:9
[INFO] [stdout]      |
[INFO] [stdout] 1543 |         drop(h2);
[INFO] [stdout]      |         ^^^^^--^
[INFO] [stdout]      |              |
[INFO] [stdout]      |              argument has type `NodeIndex`
[INFO] [stdout]      |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]      |
[INFO] [stdout] 1543 -         drop(h2);
[INFO] [stdout] 1543 +         let _ = h2;
[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/lib.rs:1555:9
[INFO] [stdout]      |
[INFO] [stdout] 1555 |         drop(o1);
[INFO] [stdout]      |         ^^^^^--^
[INFO] [stdout]      |              |
[INFO] [stdout]      |              argument has type `NodeIndex`
[INFO] [stdout]      |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]      |
[INFO] [stdout] 1555 -         drop(o1);
[INFO] [stdout] 1555 +         let _ = o1;
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `Command { std: "docker" "inspect" "43171e6f64d9b5eac8feaadb3ad90435916099a522bfd770e22e1104ddc87a89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43171e6f64d9b5eac8feaadb3ad90435916099a522bfd770e22e1104ddc87a89", kill_on_drop: false }`
[INFO] [stdout] 43171e6f64d9b5eac8feaadb3ad90435916099a522bfd770e22e1104ddc87a89
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3830bbecdbed3d36f558955ba262248cd6053336bc07591c31df1d1547db0a79
[INFO] running `Command { std: "docker" "start" "-a" "3830bbecdbed3d36f558955ba262248cd6053336bc07591c31df1d1547db0a79", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:184:17
[INFO] [stderr]     |
[INFO] [stderr] 184 |     type Item = (LinkRefItem<'a, N, L, EXTID>);
[INFO] [stderr]     |                 ^                            ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 184 -     type Item = (LinkRefItem<'a, N, L, EXTID>);
[INFO] [stderr] 184 +     type Item = LinkRefItem<'a, N, L, EXTID> ;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]    --> src/lib.rs:859:20
[INFO] [stderr]     |
[INFO] [stderr] 859 |             panic!(err);
[INFO] [stderr]     |                    ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stderr]     = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stderr] help: add a "{}" format string to `Display` the message
[INFO] [stderr]     |
[INFO] [stderr] 859 |             panic!("{}", err);
[INFO] [stderr]     |                    +++++
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]    --> src/lib.rs:892:20
[INFO] [stderr]     |
[INFO] [stderr] 892 |             panic!(err);
[INFO] [stderr]     |                    ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stderr] help: add a "{}" format string to `Display` the message
[INFO] [stderr]     |
[INFO] [stderr] 892 |             panic!("{}", err);
[INFO] [stderr]     |                    +++++
[INFO] [stderr] 
[INFO] [stderr] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stderr]     --> src/lib.rs:1529:9
[INFO] [stderr]      |
[INFO] [stderr] 1529 |         drop(i1);
[INFO] [stderr]      |         ^^^^^--^
[INFO] [stderr]      |              |
[INFO] [stderr]      |              argument has type `NodeIndex`
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(dropping_copy_types)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the expression or result
[INFO] [stderr]      |
[INFO] [stderr] 1529 -         drop(i1);
[INFO] [stderr] 1529 +         let _ = i1;
[INFO] [stderr]      |
[INFO] [stderr] 
[INFO] [stderr] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stderr]     --> src/lib.rs:1543:9
[INFO] [stderr]      |
[INFO] [stderr] 1543 |         drop(h2);
[INFO] [stderr]      |         ^^^^^--^
[INFO] [stderr]      |              |
[INFO] [stderr]      |              argument has type `NodeIndex`
[INFO] [stderr]      |
[INFO] [stderr] help: use `let _ = ...` to ignore the expression or result
[INFO] [stderr]      |
[INFO] [stderr] 1543 -         drop(h2);
[INFO] [stderr] 1543 +         let _ = h2;
[INFO] [stderr]      |
[INFO] [stderr] 
[INFO] [stderr] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stderr]     --> src/lib.rs:1555:9
[INFO] [stderr]      |
[INFO] [stderr] 1555 |         drop(o1);
[INFO] [stderr]      |         ^^^^^--^
[INFO] [stderr]      |              |
[INFO] [stderr]      |              argument has type `NodeIndex`
[INFO] [stderr]      |
[INFO] [stderr] help: use `let _ = ...` to ignore the expression or result
[INFO] [stderr]      |
[INFO] [stderr] 1555 -         drop(o1);
[INFO] [stderr] 1555 +         let _ = o1;
[INFO] [stderr]      |
[INFO] [stderr] 
[INFO] [stderr] warning: `acyclic-network` (lib) generated 3 warnings (run `cargo fix --lib -p acyclic-network` to apply 3 suggestions)
[INFO] [stderr] warning: `acyclic-network` (lib test) generated 6 warnings (3 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/acyclic_network-5e3f11bf4aa791a0)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test tests::test_remove_all_inout_links ... ok
[INFO] [stdout] test tests::test_remove_all_incoming_links ... ok
[INFO] [stdout] test tests::test_remove_link ... ok
[INFO] [stdout] test tests::test_remove_node ... ok
[INFO] [stdout] test tests::test_remove_all_outgoing_links ... ok
[INFO] [stdout] test tests::test_cycle ... ok
[INFO] [stdout] test tests::test_add_remove_link_unordered ... ok
[INFO] [stdout] test tests::test_find_random_unconnected_link_no_cycle ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests acyclic_network
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:184:17
[INFO] [stderr]     |
[INFO] [stderr] 184 |     type Item = (LinkRefItem<'a, N, L, EXTID>);
[INFO] [stderr]     |                 ^                            ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 184 -     type Item = (LinkRefItem<'a, N, L, EXTID>);
[INFO] [stderr] 184 +     type Item = LinkRefItem<'a, N, L, EXTID> ;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3830bbecdbed3d36f558955ba262248cd6053336bc07591c31df1d1547db0a79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3830bbecdbed3d36f558955ba262248cd6053336bc07591c31df1d1547db0a79", kill_on_drop: false }`
[INFO] [stdout] 3830bbecdbed3d36f558955ba262248cd6053336bc07591c31df1d1547db0a79
