[INFO] fetching crate scapegoat 2.3.0...
[INFO] testing scapegoat-2.3.0 against try#33835004928d3bf65db4d4712e1330766263b0bd for pr-155739-1
[INFO] extracting crate scapegoat 2.3.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate scapegoat 2.3.0
[INFO] finished tweaking crates.io crate scapegoat 2.3.0
[INFO] tweaked toml for crates.io crate scapegoat 2.3.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate scapegoat 2.3.0 on toolchain 33835004928d3bf65db4d4712e1330766263b0bd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate scapegoat 2.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b278ce93667fa0903a1ec03fe2c80a0b2a99333628195889ebbb8530d1ad5eb0
[INFO] running `Command { std: "docker" "start" "-a" "b278ce93667fa0903a1ec03fe2c80a0b2a99333628195889ebbb8530d1ad5eb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b278ce93667fa0903a1ec03fe2c80a0b2a99333628195889ebbb8530d1ad5eb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b278ce93667fa0903a1ec03fe2c80a0b2a99333628195889ebbb8530d1ad5eb0", kill_on_drop: false }`
[INFO] [stdout] b278ce93667fa0903a1ec03fe2c80a0b2a99333628195889ebbb8530d1ad5eb0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0e7bc17c561beff9653e0035453627f1011f1107c00b9a54f1da415398a92827
[INFO] running `Command { std: "docker" "start" "-a" "0e7bc17c561beff9653e0035453627f1011f1107c00b9a54f1da415398a92827", kill_on_drop: false }`
[INFO] [stderr]    Compiling smallnum v0.4.1
[INFO] [stderr]    Compiling tinyvec v1.5.1
[INFO] [stderr]    Compiling micromath v2.0.0
[INFO] [stderr]    Compiling scapegoat v2.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition name: `fuzzing`
[INFO] [stdout]    --> src/lib.rs:200:27
[INFO] [stdout]     |
[INFO] [stdout] 200 | #![cfg_attr(not(any(test, fuzzing)), no_std)]
[INFO] [stdout]     |                           ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: expected names are: `docsrs`, `feature`, and `test` and 32 more
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(fuzzing)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(fuzzing)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `fuzzing`
[INFO] [stdout]    --> src/lib.rs:201:27
[INFO] [stdout]     |
[INFO] [stdout] 201 | #![cfg_attr(not(any(test, fuzzing)), deny(missing_docs))]
[INFO] [stdout]     |                           ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(fuzzing)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(fuzzing)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `fuzzing`
[INFO] [stdout]    --> src/lib.rs:208:7
[INFO] [stdout]     |
[INFO] [stdout] 208 | #[cfg(fuzzing)]
[INFO] [stdout]     |       ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(fuzzing)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(fuzzing)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `fuzzing`
[INFO] [stdout]  --> src/tree/mod.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | #[cfg(fuzzing)]
[INFO] [stdout]   |       ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider using a Cargo feature instead
[INFO] [stdout]   = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]            [lints.rust]
[INFO] [stdout]            unexpected_cfgs = { level = "warn", check-cfg = ['cfg(fuzzing)'] }
[INFO] [stdout]   = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(fuzzing)");` to the top of the `build.rs`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `fuzzing`
[INFO] [stdout]   --> src/tree/mod.rs:12:7
[INFO] [stdout]    |
[INFO] [stdout] 12 | #[cfg(fuzzing)]
[INFO] [stdout]    |       ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(fuzzing)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(fuzzing)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `macros::*`
[INFO] [stdout]    --> src/lib.rs:228:9
[INFO] [stdout]     |
[INFO] [stdout] 228 | pub use macros::*;
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/set.rs:737:23
[INFO] [stdout]     |
[INFO] [stdout] 737 |     pub fn difference(&self, other: &SgSet<T, N>) -> Difference<T, N>
[INFO] [stdout]     |                       ^^^^^                          ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 737 |     pub fn difference(&self, other: &SgSet<T, N>) -> Difference<'_, T, N>
[INFO] [stdout]     |                                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/set.rs:770:74
[INFO] [stdout]     |
[INFO] [stdout] 770 |     pub fn symmetric_difference<'a>(&'a self, other: &'a SgSet<T, N>) -> SymmetricDifference<T, N>
[INFO] [stdout]     |                                      --               --                 ^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                                      |                |
[INFO] [stdout]     |                                      |                the lifetime is named here
[INFO] [stdout]     |                                      the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 770 |     pub fn symmetric_difference<'a>(&'a self, other: &'a SgSet<T, N>) -> SymmetricDifference<'a, T, N>
[INFO] [stdout]     |                                                                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/set.rs:795:25
[INFO] [stdout]     |
[INFO] [stdout] 795 |     pub fn intersection(&self, other: &SgSet<T, N>) -> Intersection<T, N>
[INFO] [stdout]     |                         ^^^^^                          ^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 795 |     pub fn intersection(&self, other: &SgSet<T, N>) -> Intersection<'_, T, N>
[INFO] [stdout]     |                                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/set.rs:826:59
[INFO] [stdout]     |
[INFO] [stdout] 826 |     pub fn union<'a>(&'a self, other: &'a SgSet<T, N>) -> Union<T, N>
[INFO] [stdout]     |                       --               --                 ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                       |                |
[INFO] [stdout]     |                       |                the lifetime is named here
[INFO] [stdout]     |                       the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 826 |     pub fn union<'a>(&'a self, other: &'a SgSet<T, N>) -> Union<'a, T, N>
[INFO] [stdout]     |                                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `Command { std: "docker" "inspect" "0e7bc17c561beff9653e0035453627f1011f1107c00b9a54f1da415398a92827", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e7bc17c561beff9653e0035453627f1011f1107c00b9a54f1da415398a92827", kill_on_drop: false }`
[INFO] [stdout] 0e7bc17c561beff9653e0035453627f1011f1107c00b9a54f1da415398a92827
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ed906f2b79ce7f473d49a5dc2f16833cc59dca3297ddd1db45112d438cc820fa
[INFO] running `Command { std: "docker" "start" "-a" "ed906f2b79ce7f473d49a5dc2f16833cc59dca3297ddd1db45112d438cc820fa", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]    Compiling serde v1.0.133
[INFO] [stderr]    Compiling crossbeam-utils v0.8.6
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.6
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling ryu v1.0.9
[INFO] [stderr]    Compiling serde_json v1.0.74
[INFO] [stderr]    Compiling syn v1.0.85
[INFO] [stderr]    Compiling serde_derive v1.0.133
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling itoa v1.0.1
[INFO] [stderr]    Compiling plotters-backend v0.3.2
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]    Compiling itertools v0.10.3
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling half v1.8.2
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling plotters-svg v0.3.1
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling oorandom v11.1.3
[INFO] [stderr]    Compiling crossbeam-channel v0.5.2
[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling quote v1.0.14
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stdout] warning: unexpected `cfg` condition name: `fuzzing`
[INFO] [stdout]    --> src/lib.rs:200:27
[INFO] [stdout]     |
[INFO] [stdout] 200 | #![cfg_attr(not(any(test, fuzzing)), no_std)]
[INFO] [stdout]     |                           ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: expected names are: `docsrs`, `feature`, and `test` and 32 more
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(fuzzing)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(fuzzing)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `fuzzing`
[INFO] [stdout]    --> src/lib.rs:201:27
[INFO] [stdout]     |
[INFO] [stdout] 201 | #![cfg_attr(not(any(test, fuzzing)), deny(missing_docs))]
[INFO] [stdout]     |                           ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(fuzzing)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(fuzzing)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `fuzzing`
[INFO] [stdout]    --> src/lib.rs:208:7
[INFO] [stdout]     |
[INFO] [stdout] 208 | #[cfg(fuzzing)]
[INFO] [stdout]     |       ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(fuzzing)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(fuzzing)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `fuzzing`
[INFO] [stdout]  --> src/tree/mod.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | #[cfg(fuzzing)]
[INFO] [stdout]   |       ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider using a Cargo feature instead
[INFO] [stdout]   = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]            [lints.rust]
[INFO] [stdout]            unexpected_cfgs = { level = "warn", check-cfg = ['cfg(fuzzing)'] }
[INFO] [stdout]   = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(fuzzing)");` to the top of the `build.rs`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `fuzzing`
[INFO] [stdout]   --> src/tree/mod.rs:12:7
[INFO] [stdout]    |
[INFO] [stdout] 12 | #[cfg(fuzzing)]
[INFO] [stdout]    |       ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(fuzzing)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(fuzzing)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `macros::*`
[INFO] [stdout]    --> src/lib.rs:228:9
[INFO] [stdout]     |
[INFO] [stdout] 228 | pub use macros::*;
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/set.rs:737:23
[INFO] [stdout]     |
[INFO] [stdout] 737 |     pub fn difference(&self, other: &SgSet<T, N>) -> Difference<T, N>
[INFO] [stdout]     |                       ^^^^^                          ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 737 |     pub fn difference(&self, other: &SgSet<T, N>) -> Difference<'_, T, N>
[INFO] [stdout]     |                                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/set.rs:770:74
[INFO] [stdout]     |
[INFO] [stdout] 770 |     pub fn symmetric_difference<'a>(&'a self, other: &'a SgSet<T, N>) -> SymmetricDifference<T, N>
[INFO] [stdout]     |                                      --               --                 ^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                                      |                |
[INFO] [stdout]     |                                      |                the lifetime is named here
[INFO] [stdout]     |                                      the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 770 |     pub fn symmetric_difference<'a>(&'a self, other: &'a SgSet<T, N>) -> SymmetricDifference<'a, T, N>
[INFO] [stdout]     |                                                                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/set.rs:795:25
[INFO] [stdout]     |
[INFO] [stdout] 795 |     pub fn intersection(&self, other: &SgSet<T, N>) -> Intersection<T, N>
[INFO] [stdout]     |                         ^^^^^                          ^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 795 |     pub fn intersection(&self, other: &SgSet<T, N>) -> Intersection<'_, T, N>
[INFO] [stdout]     |                                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/set.rs:826:59
[INFO] [stdout]     |
[INFO] [stdout] 826 |     pub fn union<'a>(&'a self, other: &'a SgSet<T, N>) -> Union<T, N>
[INFO] [stdout]     |                       --               --                 ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                       |                |
[INFO] [stdout]     |                       |                the lifetime is named here
[INFO] [stdout]     |                       the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 826 |     pub fn union<'a>(&'a self, other: &'a SgSet<T, N>) -> Union<'a, T, N>
[INFO] [stdout]     |                                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling criterion-plot v0.4.4
[INFO] [stderr]    Compiling plotters v0.3.1
[INFO] [stderr]    Compiling bstr v0.2.17
[INFO] [stderr]    Compiling serde_cbor v0.11.2
[INFO] [stderr]    Compiling csv v1.1.6
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling criterion v0.3.5
[INFO] [stderr]    Compiling scapegoat v2.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition name: `fuzzing`
[INFO] [stdout]    --> src/lib.rs:200:27
[INFO] [stdout]     |
[INFO] [stdout] 200 | #![cfg_attr(not(any(test, fuzzing)), no_std)]
[INFO] [stdout]     |                           ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: expected names are: `docsrs`, `feature`, and `test` and 32 more
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(fuzzing)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(fuzzing)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `fuzzing`
[INFO] [stdout]    --> src/lib.rs:201:27
[INFO] [stdout]     |
[INFO] [stdout] 201 | #![cfg_attr(not(any(test, fuzzing)), deny(missing_docs))]
[INFO] [stdout]     |                           ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(fuzzing)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(fuzzing)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `fuzzing`
[INFO] [stdout]    --> src/lib.rs:208:7
[INFO] [stdout]     |
[INFO] [stdout] 208 | #[cfg(fuzzing)]
[INFO] [stdout]     |       ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(fuzzing)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(fuzzing)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `fuzzing`
[INFO] [stdout]  --> src/tree/mod.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | #[cfg(fuzzing)]
[INFO] [stdout]   |       ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider using a Cargo feature instead
[INFO] [stdout]   = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]            [lints.rust]
[INFO] [stdout]            unexpected_cfgs = { level = "warn", check-cfg = ['cfg(fuzzing)'] }
[INFO] [stdout]   = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(fuzzing)");` to the top of the `build.rs`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `fuzzing`
[INFO] [stdout]   --> src/tree/mod.rs:12:7
[INFO] [stdout]    |
[INFO] [stdout] 12 | #[cfg(fuzzing)]
[INFO] [stdout]    |       ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(fuzzing)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(fuzzing)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `macros::*`
[INFO] [stdout]    --> src/lib.rs:228:9
[INFO] [stdout]     |
[INFO] [stdout] 228 | pub use macros::*;
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/set.rs:737:23
[INFO] [stdout]     |
[INFO] [stdout] 737 |     pub fn difference(&self, other: &SgSet<T, N>) -> Difference<T, N>
[INFO] [stdout]     |                       ^^^^^                          ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 737 |     pub fn difference(&self, other: &SgSet<T, N>) -> Difference<'_, T, N>
[INFO] [stdout]     |                                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/set.rs:770:74
[INFO] [stdout]     |
[INFO] [stdout] 770 |     pub fn symmetric_difference<'a>(&'a self, other: &'a SgSet<T, N>) -> SymmetricDifference<T, N>
[INFO] [stdout]     |                                      --               --                 ^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                                      |                |
[INFO] [stdout]     |                                      |                the lifetime is named here
[INFO] [stdout]     |                                      the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 770 |     pub fn symmetric_difference<'a>(&'a self, other: &'a SgSet<T, N>) -> SymmetricDifference<'a, T, N>
[INFO] [stdout]     |                                                                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/set.rs:795:25
[INFO] [stdout]     |
[INFO] [stdout] 795 |     pub fn intersection(&self, other: &SgSet<T, N>) -> Intersection<T, N>
[INFO] [stdout]     |                         ^^^^^                          ^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 795 |     pub fn intersection(&self, other: &SgSet<T, N>) -> Intersection<'_, T, N>
[INFO] [stdout]     |                                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/set.rs:826:59
[INFO] [stdout]     |
[INFO] [stdout] 826 |     pub fn union<'a>(&'a self, other: &'a SgSet<T, N>) -> Union<T, N>
[INFO] [stdout]     |                       --               --                 ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                       |                |
[INFO] [stdout]     |                       |                the lifetime is named here
[INFO] [stdout]     |                       the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 826 |     pub fn union<'a>(&'a self, other: &'a SgSet<T, N>) -> Union<'a, T, N>
[INFO] [stdout]     |                                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 30.29s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.3.5
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "ed906f2b79ce7f473d49a5dc2f16833cc59dca3297ddd1db45112d438cc820fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed906f2b79ce7f473d49a5dc2f16833cc59dca3297ddd1db45112d438cc820fa", kill_on_drop: false }`
[INFO] [stdout] ed906f2b79ce7f473d49a5dc2f16833cc59dca3297ddd1db45112d438cc820fa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6ec73ea04762865f572e20ded17288b9b07f9a4904baa858d364520787d01787
[INFO] running `Command { std: "docker" "start" "-a" "6ec73ea04762865f572e20ded17288b9b07f9a4904baa858d364520787d01787", kill_on_drop: false }`
[INFO] [stderr] warning: unexpected `cfg` condition name: `fuzzing`
[INFO] [stderr]    --> src/lib.rs:200:27
[INFO] [stderr]     |
[INFO] [stderr] 200 | #![cfg_attr(not(any(test, fuzzing)), no_std)]
[INFO] [stderr]     |                           ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: expected names are: `docsrs`, `feature`, and `test` and 32 more
[INFO] [stderr]     = help: consider using a Cargo feature instead
[INFO] [stderr]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stderr]              [lints.rust]
[INFO] [stderr]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(fuzzing)'] }
[INFO] [stderr]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(fuzzing)");` to the top of the `build.rs`
[INFO] [stderr]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stderr]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unexpected `cfg` condition name: `fuzzing`
[INFO] [stderr]    --> src/lib.rs:201:27
[INFO] [stderr]     |
[INFO] [stderr] 201 | #![cfg_attr(not(any(test, fuzzing)), deny(missing_docs))]
[INFO] [stderr]     |                           ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: consider using a Cargo feature instead
[INFO] [stderr]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stderr]              [lints.rust]
[INFO] [stderr]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(fuzzing)'] }
[INFO] [stderr]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(fuzzing)");` to the top of the `build.rs`
[INFO] [stderr]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stderr] 
[INFO] [stderr] warning: unexpected `cfg` condition name: `fuzzing`
[INFO] [stderr]    --> src/lib.rs:208:7
[INFO] [stderr]     |
[INFO] [stderr] 208 | #[cfg(fuzzing)]
[INFO] [stderr]     |       ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: consider using a Cargo feature instead
[INFO] [stderr]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stderr]              [lints.rust]
[INFO] [stderr]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(fuzzing)'] }
[INFO] [stderr]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(fuzzing)");` to the top of the `build.rs`
[INFO] [stderr]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stderr] 
[INFO] [stderr] warning: unexpected `cfg` condition name: `fuzzing`
[INFO] [stderr]  --> src/tree/mod.rs:8:7
[INFO] [stderr]   |
[INFO] [stderr] 8 | #[cfg(fuzzing)]
[INFO] [stderr]   |       ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: consider using a Cargo feature instead
[INFO] [stderr]   = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stderr]            [lints.rust]
[INFO] [stderr]            unexpected_cfgs = { level = "warn", check-cfg = ['cfg(fuzzing)'] }
[INFO] [stderr]   = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(fuzzing)");` to the top of the `build.rs`
[INFO] [stderr]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stderr] 
[INFO] [stderr] warning: unexpected `cfg` condition name: `fuzzing`
[INFO] [stderr]   --> src/tree/mod.rs:12:7
[INFO] [stderr]    |
[INFO] [stderr] 12 | #[cfg(fuzzing)]
[INFO] [stderr]    |       ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider using a Cargo feature instead
[INFO] [stderr]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stderr]             [lints.rust]
[INFO] [stderr]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(fuzzing)'] }
[INFO] [stderr]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(fuzzing)");` to the top of the `build.rs`
[INFO] [stderr]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `macros::*`
[INFO] [stderr]    --> src/lib.rs:228:9
[INFO] [stderr]     |
[INFO] [stderr] 228 | pub use macros::*;
[INFO] [stderr]     |         ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/set.rs:737:23
[INFO] [stderr]     |
[INFO] [stderr] 737 |     pub fn difference(&self, other: &SgSet<T, N>) -> Difference<T, N>
[INFO] [stderr]     |                       ^^^^^                          ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                       |
[INFO] [stderr]     |                       the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 737 |     pub fn difference(&self, other: &SgSet<T, N>) -> Difference<'_, T, N>
[INFO] [stderr]     |                                                                 +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stderr]    --> src/set.rs:770:74
[INFO] [stderr]     |
[INFO] [stderr] 770 |     pub fn symmetric_difference<'a>(&'a self, other: &'a SgSet<T, N>) -> SymmetricDifference<T, N>
[INFO] [stderr]     |                                      --               --                 ^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                                      |                |
[INFO] [stderr]     |                                      |                the lifetime is named here
[INFO] [stderr]     |                                      the lifetime is named here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: consistently use `'a`
[INFO] [stderr]     |
[INFO] [stderr] 770 |     pub fn symmetric_difference<'a>(&'a self, other: &'a SgSet<T, N>) -> SymmetricDifference<'a, T, N>
[INFO] [stderr]     |                                                                                              +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/set.rs:795:25
[INFO] [stderr]     |
[INFO] [stderr] 795 |     pub fn intersection(&self, other: &SgSet<T, N>) -> Intersection<T, N>
[INFO] [stderr]     |                         ^^^^^                          ^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 795 |     pub fn intersection(&self, other: &SgSet<T, N>) -> Intersection<'_, T, N>
[INFO] [stderr]     |                                                                     +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stderr]    --> src/set.rs:826:59
[INFO] [stderr]     |
[INFO] [stderr] 826 |     pub fn union<'a>(&'a self, other: &'a SgSet<T, N>) -> Union<T, N>
[INFO] [stderr]     |                       --               --                 ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                       |                |
[INFO] [stderr]     |                       |                the lifetime is named here
[INFO] [stderr]     |                       the lifetime is named here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: consistently use `'a`
[INFO] [stderr]     |
[INFO] [stderr] 826 |     pub fn union<'a>(&'a self, other: &'a SgSet<T, N>) -> Union<'a, T, N>
[INFO] [stderr]     |                                                                 +++
[INFO] [stderr] 
[INFO] [stderr] warning: `scapegoat` (lib) generated 10 warnings (run `cargo fix --lib -p scapegoat` to apply 5 suggestions)
[INFO] [stderr] warning: `scapegoat` (lib test) generated 10 warnings (10 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.3.5
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/scapegoat-9abc0d492882b774)
[INFO] [stdout] 
[INFO] [stdout] running 40 tests
[INFO] [stdout] test tree::arena::tests::test_capacity ... ok
[INFO] [stdout] test tree::arena::tests::test_index_1 ... ok
[INFO] [stdout] test tree::arena::tests::test_arena_next_back ... ok
[INFO] [stdout] test tree::node::tests::test_node_sizing ... ok
[INFO] [stdout] test tree::arena::tests::test_node_packing ... ok
[INFO] [stdout] test tree::arena::tests::test_sort ... ok
[INFO] [stdout] test tree::test::test_append ... ok
[INFO] [stdout] test tree::arena::tests::test_index_mut ... ok
[INFO] [stdout] test tree::arena::tests::test_add_and_remove ... ok
[INFO] [stdout] test tree::test::test_from_iter ... ok
[INFO] [stdout] test tree::test::test_clone ... ok
[INFO] [stdout] test tree::test::test_hash ... ok
[INFO] [stdout] test tree::test::test_from_arr ... ok
[INFO] [stdout] test tree::test::test_flatten ... ok
[INFO] [stdout] test tree::test::test_clear ... ok
[INFO] [stdout] test tree::test::test_first_last ... ok
[INFO] [stdout] test tree::test::test_intersect_cnt ... ok
[INFO] [stdout] test tree::test::test_debug ... ok
[INFO] [stdout] test tree::test::test_double_ended_iter_mut ... ok
[INFO] [stdout] test tree::test::test_extend ... ok
[INFO] [stdout] test tree::test::test_slice_search ... ok
[INFO] [stdout] test tree::test::test_iter ... ok
[INFO] [stdout] test tree::test::test_len ... ok
[INFO] [stdout] test tree::test::test_ref_iter ... ok
[INFO] [stdout] test tree::test::test_retain ... ok
[INFO] [stdout] test tree::test::test_tree_packing ... ok
[INFO] [stdout] test tree::test::test_subtree_rebalance ... ok
[INFO] [stdout] test tree::test::test_tree_sizing ... ok
[INFO] [stdout] test tree::test::test_two_child_removal_case_1 ... ok
[INFO] [stdout] test tree::test::test_rand_remove ... ok
[INFO] [stdout] test tree::test::test_two_child_removal_case_3 ... ok
[INFO] [stdout] test tree::test::test_two_child_removal_case_2 ... ok
[INFO] [stdout] test tree::arena::tests::test_index_2 - should panic ... ok
[INFO] [stdout] test tree::test::test_capacity_exceed - should panic ... ok
[INFO] [stdout] test tree::test::test_logical_fuzz_fast ... ok
[INFO] [stdout] test tree::test::test_set_rebal_param ... ok
[INFO] [stdout] test tree::test::test_logical_fuzz_slow ... ok
[INFO] [stdout] test tree::test::test_fallible_insert ... ok
[INFO] [stdout] test tree::test::test_extend_panic - should panic ... ok
[INFO] [stdout] test tree::test::test_from_iter_panic - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 40 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.60s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests scapegoat
[INFO] [stdout] 
[INFO] [stdout] running 102 tests
[INFO] [stdout] test src/macros.rs - macros::sgmap (line 7) ... ok
[INFO] [stdout] test src/lib.rs - (line 107) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::first_key (line 804) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::contains_key (line 730) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::get (line 667) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::clear (line 712) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::get_key_value (line 644) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::append (line 224) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::first_entry (line 959) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::insert (line 314) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::get_mut (line 690) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::entry (line 931) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::capacity (line 104) ... ok
[INFO] [stdout] test src/macros.rs - macros::sgset (line 45) ... ok
[INFO] [stdout] test src/lib.rs - (line 40) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::iter (line 484) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::is_full (line 766) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::from (line 1120) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::first_key_value (line 784) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::keys (line 119) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::last_entry (line 990) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::last_key (line 869) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::last_key_value (line 850) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::is_empty (line 750) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::into_values (line 179) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::into_keys (line 139) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::pop_first (line 827) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::new (line 39) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::iter_mut (line 507) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::pop_last (line 891) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::rebal_param (line 83) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::try_append (line 256) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::len (line 913) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::remove (line 621) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::split_off (line 581) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::set_rebal_param (line 64) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::retain (line 560) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::try_extend (line 423) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::range_mut (line 1074) ... ok
[INFO] [stdout] test src/map_types.rs - map_types::Entry<'a,K,V,N>::key (line 331) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::range (line 1032) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::values_mut (line 199) ... ok
[INFO] [stdout] test src/map_types.rs - map_types::Entry<'a,K,V,N>::or_insert (line 263) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::remove_entry (line 537) ... ok
[INFO] [stdout] test src/map_types.rs - map_types::Entry<'a,K,V,N>::or_insert_with_key (line 308) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::try_insert (line 345) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::values (line 159) ... ok
[INFO] [stdout] test src/map_types.rs - map_types::OccupiedEntry<'a,K,V,N>::get (line 489) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::try_insert_std (line 398) ... ok
[INFO] [stdout] test src/map_types.rs - map_types::OccupiedEntry<'a,K,V,N>::remove (line 610) ... ok
[INFO] [stdout] test src/map_types.rs - map_types::Entry<'a,K,V,N>::and_modify (line 349) ... ok
[INFO] [stdout] test src/map.rs - map::SgMap<K,V,N>::try_from_iter (line 453) ... ok
[INFO] [stdout] test src/map_types.rs - map_types::Entry<'a,K,V,N>::or_default (line 379) ... ok
[INFO] [stdout] test src/map_types.rs - map_types::OccupiedEntry<'a,K,V,N>::insert (line 564) ... ok
[INFO] [stdout] test src/map_types.rs - map_types::Entry<'a,K,V,N>::or_insert_with (line 283) ... ok
[INFO] [stdout] test src/set.rs - set::SgSet<T,N>::capacity (line 103) ... ok
[INFO] [stdout] test src/map_types.rs - map_types::OccupiedEntry<'a,K,V,N>::into_mut (line 542) ... ok
[INFO] [stdout] test src/map_types.rs - map_types::OccupiedEntry<'a,K,V,N>::get_mut (line 513) ... ok
[INFO] [stdout] test src/map_types.rs - map_types::VacantEntry<'a,K,V,N>::key (line 408) ... ok
[INFO] [stdout] test src/map_types.rs - map_types::VacantEntry<'a,K,V,N>::into_key (line 422) ... ok
[INFO] [stdout] test src/map_types.rs - map_types::OccupiedEntry<'a,K,V,N>::remove_entry (line 584) ... ok
[INFO] [stdout] test src/map_types.rs - map_types::OccupiedEntry<'a,K,V,N>::key (line 474) ... ok
[INFO] [stdout] test src/map_types.rs - map_types::VacantEntry<'a,K,V,N>::insert (line 441) ... ok
[INFO] [stdout] test src/set.rs - set::SgSet<T,N>::difference (line 723) ... ok
[INFO] [stdout] test src/set.rs - set::SgSet<T,N>::clear (line 540) ... ok
[INFO] [stdout] test src/set.rs - set::SgSet<T,N>::append (line 118) ... ok
[INFO] [stdout] test src/set.rs - set::SgSet<T,N>::insert (line 210) ... ok
[INFO] [stdout] test src/set.rs - set::&'_SgSet<T,N>::bitand (line 1063) ... ok
[INFO] [stdout] test src/set.rs - set::&'_SgSet<T,N>::sub (line 1041) ... ok
[INFO] [stdout] test src/set.rs - set::&'_SgSet<T,N>::bitor (line 1085) ... ok
[INFO] [stdout] test src/set.rs - set::SgSet<T,N>::from (line 957) ... ok
[INFO] [stdout] test src/set.rs - set::&'_SgSet<T,N>::bitxor (line 1107) ... ok
[INFO] [stdout] test src/set.rs - set::SgSet<T,N>::is_disjoint (line 870) ... ok
[INFO] [stdout] test src/set.rs - set::SgSet<T,N>::contains (line 560) ... ok
[INFO] [stdout] test src/set.rs - set::SgSet<T,N>::first (line 579) ... ok
[INFO] [stdout] test src/set.rs - set::SgSet<T,N>::get (line 521) ... ok
[INFO] [stdout] test src/set.rs - set::SgSet<T,N>::is_full (line 853) ... ok
[INFO] [stdout] test src/set.rs - set::SgSet<T,N>::is_subset (line 892) ... ok
[INFO] [stdout] test src/set.rs - set::SgSet<T,N>::last (line 623) ... ok
[INFO] [stdout] test src/set.rs - set::SgSet<T,N>::intersection (line 781) ... ok
[INFO] [stdout] test src/set.rs - set::SgSet<T,N>::new (line 40) ... ok
[INFO] [stdout] test src/set.rs - set::SgSet<T,N>::is_superset (line 915) ... ok
[INFO] [stdout] test src/set.rs - set::SgSet<T,N>::set_rebal_param (line 63) ... ok
[INFO] [stdout] test src/set.rs - set::SgSet<T,N>::remove (line 376) ... ok
[INFO] [stdout] test src/set.rs - set::SgSet<T,N>::iter (line 353) ... ok
[INFO] [stdout] test src/set.rs - set::SgSet<T,N>::rebal_param (line 82) ... ok
[INFO] [stdout] test src/set.rs - set::SgSet<T,N>::pop_last (line 645) ... ok
[INFO] [stdout] test src/set.rs - set::SgSet<T,N>::is_empty (line 837) ... ok
[INFO] [stdout] test src/set.rs - set::SgSet<T,N>::replace (line 435) ... ok
[INFO] [stdout] test src/set.rs - set::SgSet<T,N>::take (line 474) ... ok
[INFO] [stdout] test src/set.rs - set::SgSet<T,N>::try_insert (line 233) ... ok
[INFO] [stdout] test src/set.rs - set::SgSet<T,N>::pop_first (line 601) ... ok
[INFO] [stdout] test src/set.rs - set::SgSet<T,N>::iter (line 340) ... ok
[INFO] [stdout] test src/set.rs - set::SgSet<T,N>::retain (line 496) ... ok
[INFO] [stdout] test src/set.rs - set::SgSet<T,N>::len (line 667) ... ok
[INFO] [stdout] test src/set.rs - set::SgSet<T,N>::try_extend (line 275) ... ok
[INFO] [stdout] test src/set.rs - set::SgSet<T,N>::try_append (line 153) ... ok
[INFO] [stdout] test src/set.rs - set::SgSet<T,N>::split_off (line 398) ... ok
[INFO] [stdout] test src/set.rs - set::SgSet<T,N>::union (line 806) ... ok
[INFO] [stdout] test src/set.rs - set::SgSet<T,N>::symmetric_difference (line 748) ... ok
[INFO] [stdout] test src/set.rs - set::SgSet<T,N>::try_from_iter (line 311) ... ok
[INFO] [stdout] test src/set.rs - set::SgSet<T,N>::range (line 693) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 102 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 7.79s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6ec73ea04762865f572e20ded17288b9b07f9a4904baa858d364520787d01787", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ec73ea04762865f572e20ded17288b9b07f9a4904baa858d364520787d01787", kill_on_drop: false }`
[INFO] [stdout] 6ec73ea04762865f572e20ded17288b9b07f9a4904baa858d364520787d01787
