[INFO] fetching crate treena 0.0.5...
[INFO] checking treena-0.0.5 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate treena 0.0.5 into /workspace/builds/worker-0-tc2/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-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate treena 0.0.5 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9a609a8c749844cfbbe6166350e5ddfc65768c309fedd832342bf456d5162880
[INFO] running `Command { std: "docker" "start" "-a" "9a609a8c749844cfbbe6166350e5ddfc65768c309fedd832342bf456d5162880", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9a609a8c749844cfbbe6166350e5ddfc65768c309fedd832342bf456d5162880", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a609a8c749844cfbbe6166350e5ddfc65768c309fedd832342bf456d5162880", kill_on_drop: false }`
[INFO] [stdout] 9a609a8c749844cfbbe6166350e5ddfc65768c309fedd832342bf456d5162880
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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 -Dunmustuse_in_always_ok" "-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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b53bd3acc9e8148ad5a81e37b70c4765df0b2a9f1c559a1d8f0749b3df6630fb
[INFO] running `Command { std: "docker" "start" "-a" "b53bd3acc9e8148ad5a81e37b70c4765df0b2a9f1c559a1d8f0749b3df6630fb", kill_on_drop: false }`
[INFO] [stderr]     Checking 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, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[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, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[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, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[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, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[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, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[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, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[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, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[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, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[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, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[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, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[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] 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, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[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, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[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, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[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, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[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, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[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, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[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, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[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, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[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, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[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, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[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: 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] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]   --> src/nonmax.rs:43:17
[INFO] [stdout]    |
[INFO] [stdout] 43 |                 <$tyint>::try_from(n)
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 87 | define_type!(NonMaxUsize, core::num::NonZeroUsize, usize);
[INFO] [stdout]    | --------------------------------------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]    = note: this error originates in the macro `define_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]   --> src/nonmax.rs:43:17
[INFO] [stdout]    |
[INFO] [stdout] 43 |                 <$tyint>::try_from(n)
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 87 | define_type!(NonMaxUsize, core::num::NonZeroUsize, usize);
[INFO] [stdout]    | --------------------------------------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]    = note: this error originates in the macro `define_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `treena` (lib test) due to 1 previous error; 13 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `treena` (lib) due to 1 previous error; 12 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "b53bd3acc9e8148ad5a81e37b70c4765df0b2a9f1c559a1d8f0749b3df6630fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b53bd3acc9e8148ad5a81e37b70c4765df0b2a9f1c559a1d8f0749b3df6630fb", kill_on_drop: false }`
[INFO] [stdout] b53bd3acc9e8148ad5a81e37b70c4765df0b2a9f1c559a1d8f0749b3df6630fb
