[INFO] fetching crate treena 0.0.5...
[INFO] building treena-0.0.5 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate treena 0.0.5 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate treena 0.0.5
[INFO] finished tweaking crates.io crate treena 0.0.5
[INFO] tweaked toml for crates.io crate treena 0.0.5 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate treena 0.0.5 on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 303b3de8c3fbcc111ebe21083ea102c70433b5977a0aedcd26bc4cba092de305
[INFO] running `Command { std: "docker" "start" "-a" "303b3de8c3fbcc111ebe21083ea102c70433b5977a0aedcd26bc4cba092de305", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "303b3de8c3fbcc111ebe21083ea102c70433b5977a0aedcd26bc4cba092de305", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "303b3de8c3fbcc111ebe21083ea102c70433b5977a0aedcd26bc4cba092de305", kill_on_drop: false }`
[INFO] [stdout] 303b3de8c3fbcc111ebe21083ea102c70433b5977a0aedcd26bc4cba092de305
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f387a03cf65e402789e8f4f29c9102f8d016d4e451de7da7526acadfd8413800
[INFO] running `Command { std: "docker" "start" "-a" "f387a03cf65e402789e8f4f29c9102f8d016d4e451de7da7526acadfd8413800", kill_on_drop: false }`
[INFO] [stderr]    Compiling treena v0.0.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/dynamic/id.rs:119:13
[INFO] [stdout]     |
[INFO] [stdout] 119 |             #[must_use]
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 133 | define_internal_id_type!(NodeIdU8, crate::nonmax::NonMaxU8, "u8");
[INFO] [stdout]     | ----------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout]     = note: this warning originates in the macro `define_internal_id_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/dynamic/id.rs:125:13
[INFO] [stdout]     |
[INFO] [stdout] 125 |             #[must_use]
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 133 | define_internal_id_type!(NodeIdU8, crate::nonmax::NonMaxU8, "u8");
[INFO] [stdout]     | ----------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout]     = note: this warning originates in the macro `define_internal_id_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/dynamic/id.rs:119:13
[INFO] [stdout]     |
[INFO] [stdout] 119 |             #[must_use]
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 134 | define_internal_id_type!(NodeIdU16, crate::nonmax::NonMaxU16, "u16");
[INFO] [stdout]     | -------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout]     = note: this warning originates in the macro `define_internal_id_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/dynamic/id.rs:125:13
[INFO] [stdout]     |
[INFO] [stdout] 125 |             #[must_use]
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 134 | define_internal_id_type!(NodeIdU16, crate::nonmax::NonMaxU16, "u16");
[INFO] [stdout]     | -------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout]     = note: this warning originates in the macro `define_internal_id_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/dynamic/id.rs:119:13
[INFO] [stdout]     |
[INFO] [stdout] 119 |             #[must_use]
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 135 | define_internal_id_type!(NodeIdU32, crate::nonmax::NonMaxU32, "u32");
[INFO] [stdout]     | -------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout]     = note: this warning originates in the macro `define_internal_id_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/dynamic/id.rs:125:13
[INFO] [stdout]     |
[INFO] [stdout] 125 |             #[must_use]
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 135 | define_internal_id_type!(NodeIdU32, crate::nonmax::NonMaxU32, "u32");
[INFO] [stdout]     | -------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout]     = note: this warning originates in the macro `define_internal_id_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/dynamic/id.rs:119:13
[INFO] [stdout]     |
[INFO] [stdout] 119 |             #[must_use]
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 136 | define_internal_id_type!(NodeIdU64, crate::nonmax::NonMaxU64, "u64");
[INFO] [stdout]     | -------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout]     = note: this warning originates in the macro `define_internal_id_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/dynamic/id.rs:125:13
[INFO] [stdout]     |
[INFO] [stdout] 125 |             #[must_use]
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 136 | define_internal_id_type!(NodeIdU64, crate::nonmax::NonMaxU64, "u64");
[INFO] [stdout]     | -------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout]     = note: this warning originates in the macro `define_internal_id_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/dynamic/id.rs:119:13
[INFO] [stdout]     |
[INFO] [stdout] 119 |             #[must_use]
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 137 | define_internal_id_type!(NodeIdUsize, crate::nonmax::NonMaxUsize, "usize");
[INFO] [stdout]     | -------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout]     = note: this warning originates in the macro `define_internal_id_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/dynamic/id.rs:125:13
[INFO] [stdout]     |
[INFO] [stdout] 125 |             #[must_use]
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 137 | define_internal_id_type!(NodeIdUsize, crate::nonmax::NonMaxUsize, "usize");
[INFO] [stdout]     | -------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout]     = note: this warning originates in the macro `define_internal_id_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/dynamic/hierarchy.rs:237:13
[INFO] [stdout]     |
[INFO] [stdout] 237 |         let mut nbs = self
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/dynamic/hierarchy.rs:324:13
[INFO] [stdout]     |
[INFO] [stdout] 324 |         let mut nbs = self
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `Command { std: "docker" "inspect" "f387a03cf65e402789e8f4f29c9102f8d016d4e451de7da7526acadfd8413800", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f387a03cf65e402789e8f4f29c9102f8d016d4e451de7da7526acadfd8413800", kill_on_drop: false }`
[INFO] [stdout] f387a03cf65e402789e8f4f29c9102f8d016d4e451de7da7526acadfd8413800
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d8ece04b9bf91c7f6cd8365322b20b720953e4c58a458f1becc48f133a61e793
[INFO] running `Command { std: "docker" "start" "-a" "d8ece04b9bf91c7f6cd8365322b20b720953e4c58a458f1becc48f133a61e793", kill_on_drop: false }`
[INFO] [stderr]    Compiling treena v0.0.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/dynamic/id.rs:119:13
[INFO] [stdout]     |
[INFO] [stdout] 119 |             #[must_use]
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 133 | define_internal_id_type!(NodeIdU8, crate::nonmax::NonMaxU8, "u8");
[INFO] [stdout]     | ----------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout]     = note: this warning originates in the macro `define_internal_id_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/dynamic/id.rs:125:13
[INFO] [stdout]     |
[INFO] [stdout] 125 |             #[must_use]
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 133 | define_internal_id_type!(NodeIdU8, crate::nonmax::NonMaxU8, "u8");
[INFO] [stdout]     | ----------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout]     = note: this warning originates in the macro `define_internal_id_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/dynamic/id.rs:119:13
[INFO] [stdout]     |
[INFO] [stdout] 119 |             #[must_use]
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 134 | define_internal_id_type!(NodeIdU16, crate::nonmax::NonMaxU16, "u16");
[INFO] [stdout]     | -------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout]     = note: this warning originates in the macro `define_internal_id_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/dynamic/id.rs:125:13
[INFO] [stdout]     |
[INFO] [stdout] 125 |             #[must_use]
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 134 | define_internal_id_type!(NodeIdU16, crate::nonmax::NonMaxU16, "u16");
[INFO] [stdout]     | -------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout]     = note: this warning originates in the macro `define_internal_id_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/dynamic/id.rs:119:13
[INFO] [stdout]     |
[INFO] [stdout] 119 |             #[must_use]
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 135 | define_internal_id_type!(NodeIdU32, crate::nonmax::NonMaxU32, "u32");
[INFO] [stdout]     | -------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout]     = note: this warning originates in the macro `define_internal_id_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/dynamic/id.rs:125:13
[INFO] [stdout]     |
[INFO] [stdout] 125 |             #[must_use]
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 135 | define_internal_id_type!(NodeIdU32, crate::nonmax::NonMaxU32, "u32");
[INFO] [stdout]     | -------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout]     = note: this warning originates in the macro `define_internal_id_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/dynamic/id.rs:119:13
[INFO] [stdout]     |
[INFO] [stdout] 119 |             #[must_use]
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 136 | define_internal_id_type!(NodeIdU64, crate::nonmax::NonMaxU64, "u64");
[INFO] [stdout]     | -------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout]     = note: this warning originates in the macro `define_internal_id_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/dynamic/id.rs:125:13
[INFO] [stdout]     |
[INFO] [stdout] 125 |             #[must_use]
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 136 | define_internal_id_type!(NodeIdU64, crate::nonmax::NonMaxU64, "u64");
[INFO] [stdout]     | -------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout]     = note: this warning originates in the macro `define_internal_id_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/dynamic/id.rs:119:13
[INFO] [stdout]     |
[INFO] [stdout] 119 |             #[must_use]
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 137 | define_internal_id_type!(NodeIdUsize, crate::nonmax::NonMaxUsize, "usize");
[INFO] [stdout]     | -------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout]     = note: this warning originates in the macro `define_internal_id_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/dynamic/id.rs:125:13
[INFO] [stdout]     |
[INFO] [stdout] 125 |             #[must_use]
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 137 | define_internal_id_type!(NodeIdUsize, crate::nonmax::NonMaxUsize, "usize");
[INFO] [stdout]     | -------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout]     = note: this warning originates in the macro `define_internal_id_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/dynamic/hierarchy.rs:237:13
[INFO] [stdout]     |
[INFO] [stdout] 237 |         let mut nbs = self
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/dynamic/hierarchy.rs:324:13
[INFO] [stdout]     |
[INFO] [stdout] 324 |         let mut nbs = self
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/dynamic/id.rs:119:13
[INFO] [stdout]     |
[INFO] [stdout] 119 |             #[must_use]
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 133 | define_internal_id_type!(NodeIdU8, crate::nonmax::NonMaxU8, "u8");
[INFO] [stdout]     | ----------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout]     = note: this warning originates in the macro `define_internal_id_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/dynamic/id.rs:125:13
[INFO] [stdout]     |
[INFO] [stdout] 125 |             #[must_use]
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 133 | define_internal_id_type!(NodeIdU8, crate::nonmax::NonMaxU8, "u8");
[INFO] [stdout]     | ----------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout]     = note: this warning originates in the macro `define_internal_id_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/dynamic/id.rs:119:13
[INFO] [stdout]     |
[INFO] [stdout] 119 |             #[must_use]
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 134 | define_internal_id_type!(NodeIdU16, crate::nonmax::NonMaxU16, "u16");
[INFO] [stdout]     | -------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout]     = note: this warning originates in the macro `define_internal_id_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/dynamic/id.rs:125:13
[INFO] [stdout]     |
[INFO] [stdout] 125 |             #[must_use]
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 134 | define_internal_id_type!(NodeIdU16, crate::nonmax::NonMaxU16, "u16");
[INFO] [stdout]     | -------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout]     = note: this warning originates in the macro `define_internal_id_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/dynamic/id.rs:119:13
[INFO] [stdout]     |
[INFO] [stdout] 119 |             #[must_use]
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 135 | define_internal_id_type!(NodeIdU32, crate::nonmax::NonMaxU32, "u32");
[INFO] [stdout]     | -------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout]     = note: this warning originates in the macro `define_internal_id_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/dynamic/id.rs:125:13
[INFO] [stdout]     |
[INFO] [stdout] 125 |             #[must_use]
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 135 | define_internal_id_type!(NodeIdU32, crate::nonmax::NonMaxU32, "u32");
[INFO] [stdout]     | -------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout]     = note: this warning originates in the macro `define_internal_id_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/dynamic/id.rs:119:13
[INFO] [stdout]     |
[INFO] [stdout] 119 |             #[must_use]
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 136 | define_internal_id_type!(NodeIdU64, crate::nonmax::NonMaxU64, "u64");
[INFO] [stdout]     | -------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout]     = note: this warning originates in the macro `define_internal_id_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/dynamic/id.rs:125:13
[INFO] [stdout]     |
[INFO] [stdout] 125 |             #[must_use]
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 136 | define_internal_id_type!(NodeIdU64, crate::nonmax::NonMaxU64, "u64");
[INFO] [stdout]     | -------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout]     = note: this warning originates in the macro `define_internal_id_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/dynamic/id.rs:119:13
[INFO] [stdout]     |
[INFO] [stdout] 119 |             #[must_use]
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 137 | define_internal_id_type!(NodeIdUsize, crate::nonmax::NonMaxUsize, "usize");
[INFO] [stdout]     | -------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout]     = note: this warning originates in the macro `define_internal_id_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/dynamic/id.rs:125:13
[INFO] [stdout]     |
[INFO] [stdout] 125 |             #[must_use]
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 137 | define_internal_id_type!(NodeIdUsize, crate::nonmax::NonMaxUsize, "usize");
[INFO] [stdout]     | -------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout]     = note: this warning originates in the macro `define_internal_id_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/dynamic/hierarchy.rs:237:13
[INFO] [stdout]     |
[INFO] [stdout] 237 |         let mut nbs = self
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/dynamic/hierarchy.rs:324:13
[INFO] [stdout]     |
[INFO] [stdout] 324 |         let mut nbs = self
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique
[INFO] [stdout]     --> src/dynamic/forest.rs:2051:9
[INFO] [stdout]      |
[INFO] [stdout] 2051 | /         assert_eq!(
[INFO] [stdout] 2052 | |             container0.inner_fn_addr(),
[INFO] [stdout] 2053 | |             container1.inner_fn_addr(),
[INFO] [stdout] 2054 | |             "inner functions must have the same address \
[INFO] [stdout] 2055 | |              while the outer functions are different"
[INFO] [stdout] 2056 | |         );
[INFO] [stdout]      | |_________^
[INFO] [stdout]      |
[INFO] [stdout]      = note: the address of the same function can vary between different codegen units
[INFO] [stdout]      = note: furthermore, different functions could have the same address after being merged together
[INFO] [stdout]      = note: for more information visit <https://doc.rust-lang.org/nightly/core/ptr/fn.fn_addr_eq.html>
[INFO] [stdout]      = note: `#[warn(unpredictable_function_pointer_comparisons)]` on by default
[INFO] [stdout]      = note: this warning originates in the macro `assert_eq` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.66s
[INFO] running `Command { std: "docker" "inspect" "d8ece04b9bf91c7f6cd8365322b20b720953e4c58a458f1becc48f133a61e793", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8ece04b9bf91c7f6cd8365322b20b720953e4c58a458f1becc48f133a61e793", kill_on_drop: false }`
[INFO] [stdout] d8ece04b9bf91c7f6cd8365322b20b720953e4c58a458f1becc48f133a61e793
