[INFO] fetching crate hfs 1.0.0...
[INFO] testing hfs-1.0.0 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] extracting crate hfs 1.0.0 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate hfs 1.0.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate hfs 1.0.0
[INFO] tweaked toml for crates.io crate hfs 1.0.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate hfs 1.0.0 on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate hfs 1.0.0 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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded gcd v2.3.0
[INFO] [stderr]   Downloaded concat-idents v1.1.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8dbb4388a1bb77a1b6d316b95393902fe3875da38e4ecab9d40ef5438ca37da0
[INFO] running `Command { std: "docker" "start" "-a" "8dbb4388a1bb77a1b6d316b95393902fe3875da38e4ecab9d40ef5438ca37da0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8dbb4388a1bb77a1b6d316b95393902fe3875da38e4ecab9d40ef5438ca37da0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8dbb4388a1bb77a1b6d316b95393902fe3875da38e4ecab9d40ef5438ca37da0", kill_on_drop: false }`
[INFO] [stdout] 8dbb4388a1bb77a1b6d316b95393902fe3875da38e4ecab9d40ef5438ca37da0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] c91afb14d86f5b2f8f8797a1289c57315b26ecb8bb70bb6eceaddb57b8740beb
[INFO] running `Command { std: "docker" "start" "-a" "c91afb14d86f5b2f8f8797a1289c57315b26ecb8bb70bb6eceaddb57b8740beb", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling radium v0.7.0
[INFO] [stderr]    Compiling tap v1.0.1
[INFO] [stderr]    Compiling funty v2.0.0
[INFO] [stderr]    Compiling smallvec v1.13.2
[INFO] [stderr]    Compiling wyz v0.5.1
[INFO] [stderr]    Compiling bitvec v1.0.1
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.72
[INFO] [stderr]    Compiling derive_more v0.99.18
[INFO] [stderr]    Compiling concat-idents v1.1.5
[INFO] [stderr]    Compiling hfs v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/lib.rs:140:13
[INFO] [stdout]     |
[INFO] [stdout] 140 |     fn iter(&self) -> slice::Iter<Self> {
[INFO] [stdout]     |             ^^^^^     ----------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |             |
[INFO] [stdout]     |             this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 140 |     fn iter(&self) -> slice::Iter<'_, Self> {
[INFO] [stdout]     |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/levels.rs:502:10
[INFO] [stdout]     |
[INFO] [stdout] 220 |     ($t: ty) => { impl DoubleEndedIterator<Item = $t> + ExactSizeIterator + '_ };
[INFO] [stdout]     |                                                                             -- the lifetimes get resolved as `'a`
[INFO] [stdout] ...
[INFO] [stdout] 502 |         &'a self,
[INFO] [stdout]     |          ^^ these lifetimes flow to the output
[INFO] [stdout] 503 |         level: usize,
[INFO] [stdout] 504 |         slice: &'a [U],
[INFO] [stdout]     |                 ^^ these lifetimes flow to the output
[INFO] [stdout] 505 |     ) -> traits!(&'a [U]) {
[INFO] [stdout]     |                   -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 220 -     ($t: ty) => { impl DoubleEndedIterator<Item = $t> + ExactSizeIterator + '_ };
[INFO] [stdout] 220 +     ($t: ty) => { impl DoubleEndedIterator<Item = $t> + ExactSizeIterator + 'a };
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/levels.rs:519:10
[INFO] [stdout]     |
[INFO] [stdout] 220 |     ($t: ty) => { impl DoubleEndedIterator<Item = $t> + ExactSizeIterator + '_ };
[INFO] [stdout]     |                                                                             -- the lifetimes get resolved as `'a`
[INFO] [stdout] ...
[INFO] [stdout] 519 |         &'a self,
[INFO] [stdout]     |          ^^ these lifetimes flow to the output
[INFO] [stdout] 520 |         level: usize,
[INFO] [stdout] 521 |         slice: &'a mut [U],
[INFO] [stdout]     |                 ^^ these lifetimes flow to the output
[INFO] [stdout] 522 |     ) -> traits!(&'a mut [U]) {
[INFO] [stdout]     |                   -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 220 -     ($t: ty) => { impl DoubleEndedIterator<Item = $t> + ExactSizeIterator + '_ };
[INFO] [stdout] 220 +     ($t: ty) => { impl DoubleEndedIterator<Item = $t> + ExactSizeIterator + 'a };
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/mset.rs:580:21
[INFO] [stdout]     |
[INFO] [stdout] 580 |     pub fn iter_mut(&mut self) -> slice::IterMut<Self> {
[INFO] [stdout]     |                     ^^^^^^^^^     -------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 580 |     pub fn iter_mut(&mut self) -> slice::IterMut<'_, Self> {
[INFO] [stdout]     |                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/set.rs:570:28
[INFO] [stdout]     |
[INFO] [stdout] 570 |     pub unsafe fn iter_mut(&mut self) -> slice::IterMut<Self> {
[INFO] [stdout]     |                            ^^^^^^^^^     -------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                            |
[INFO] [stdout]     |                            this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 570 |     pub unsafe fn iter_mut(&mut self) -> slice::IterMut<'_, Self> {
[INFO] [stdout]     |                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 19.64s
[INFO] running `Command { std: "docker" "inspect" "c91afb14d86f5b2f8f8797a1289c57315b26ecb8bb70bb6eceaddb57b8740beb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c91afb14d86f5b2f8f8797a1289c57315b26ecb8bb70bb6eceaddb57b8740beb", kill_on_drop: false }`
[INFO] [stdout] c91afb14d86f5b2f8f8797a1289c57315b26ecb8bb70bb6eceaddb57b8740beb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--no-run" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 88cf59b3342e7a8515839308919d49ae926eef66b834b50e870fbc18b9195f34
[INFO] running `Command { std: "docker" "start" "-a" "88cf59b3342e7a8515839308919d49ae926eef66b834b50e870fbc18b9195f34", kill_on_drop: false }`
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/lib.rs:140:13
[INFO] [stdout]     |
[INFO] [stdout] 140 |     fn iter(&self) -> slice::Iter<Self> {
[INFO] [stdout]     |             ^^^^^     ----------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |             |
[INFO] [stdout]     |             this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 140 |     fn iter(&self) -> slice::Iter<'_, Self> {
[INFO] [stdout]     |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/levels.rs:502:10
[INFO] [stdout]     |
[INFO] [stdout] 220 |     ($t: ty) => { impl DoubleEndedIterator<Item = $t> + ExactSizeIterator + '_ };
[INFO] [stdout]     |                                                                             -- the lifetimes get resolved as `'a`
[INFO] [stdout] ...
[INFO] [stdout] 502 |         &'a self,
[INFO] [stdout]     |          ^^ these lifetimes flow to the output
[INFO] [stdout] 503 |         level: usize,
[INFO] [stdout] 504 |         slice: &'a [U],
[INFO] [stdout]     |                 ^^ these lifetimes flow to the output
[INFO] [stdout] 505 |     ) -> traits!(&'a [U]) {
[INFO] [stdout]     |                   -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 220 -     ($t: ty) => { impl DoubleEndedIterator<Item = $t> + ExactSizeIterator + '_ };
[INFO] [stdout] 220 +     ($t: ty) => { impl DoubleEndedIterator<Item = $t> + ExactSizeIterator + 'a };
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/levels.rs:519:10
[INFO] [stdout]     |
[INFO] [stdout] 220 |     ($t: ty) => { impl DoubleEndedIterator<Item = $t> + ExactSizeIterator + '_ };
[INFO] [stdout]     |                                                                             -- the lifetimes get resolved as `'a`
[INFO] [stdout] ...
[INFO] [stdout] 519 |         &'a self,
[INFO] [stdout]     |          ^^ these lifetimes flow to the output
[INFO] [stdout] 520 |         level: usize,
[INFO] [stdout] 521 |         slice: &'a mut [U],
[INFO] [stdout]     |                 ^^ these lifetimes flow to the output
[INFO] [stdout] 522 |     ) -> traits!(&'a mut [U]) {
[INFO] [stdout]     |                   -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 220 -     ($t: ty) => { impl DoubleEndedIterator<Item = $t> + ExactSizeIterator + '_ };
[INFO] [stdout] 220 +     ($t: ty) => { impl DoubleEndedIterator<Item = $t> + ExactSizeIterator + 'a };
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/mset.rs:580:21
[INFO] [stdout]     |
[INFO] [stdout] 580 |     pub fn iter_mut(&mut self) -> slice::IterMut<Self> {
[INFO] [stdout]     |                     ^^^^^^^^^     -------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 580 |     pub fn iter_mut(&mut self) -> slice::IterMut<'_, Self> {
[INFO] [stdout]     |                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/set.rs:570:28
[INFO] [stdout]     |
[INFO] [stdout] 570 |     pub unsafe fn iter_mut(&mut self) -> slice::IterMut<Self> {
[INFO] [stdout]     |                            ^^^^^^^^^     -------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                            |
[INFO] [stdout]     |                            this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 570 |     pub unsafe fn iter_mut(&mut self) -> slice::IterMut<'_, Self> {
[INFO] [stdout]     |                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling gcd v2.3.0
[INFO] [stderr]    Compiling hfs v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/lib.rs:140:13
[INFO] [stdout]     |
[INFO] [stdout] 140 |     fn iter(&self) -> slice::Iter<Self> {
[INFO] [stdout]     |             ^^^^^     ----------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |             |
[INFO] [stdout]     |             this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 140 |     fn iter(&self) -> slice::Iter<'_, Self> {
[INFO] [stdout]     |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/levels.rs:502:10
[INFO] [stdout]     |
[INFO] [stdout] 220 |     ($t: ty) => { impl DoubleEndedIterator<Item = $t> + ExactSizeIterator + '_ };
[INFO] [stdout]     |                                                                             -- the lifetimes get resolved as `'a`
[INFO] [stdout] ...
[INFO] [stdout] 502 |         &'a self,
[INFO] [stdout]     |          ^^ these lifetimes flow to the output
[INFO] [stdout] 503 |         level: usize,
[INFO] [stdout] 504 |         slice: &'a [U],
[INFO] [stdout]     |                 ^^ these lifetimes flow to the output
[INFO] [stdout] 505 |     ) -> traits!(&'a [U]) {
[INFO] [stdout]     |                   -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 220 -     ($t: ty) => { impl DoubleEndedIterator<Item = $t> + ExactSizeIterator + '_ };
[INFO] [stdout] 220 +     ($t: ty) => { impl DoubleEndedIterator<Item = $t> + ExactSizeIterator + 'a };
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/levels.rs:519:10
[INFO] [stdout]     |
[INFO] [stdout] 220 |     ($t: ty) => { impl DoubleEndedIterator<Item = $t> + ExactSizeIterator + '_ };
[INFO] [stdout]     |                                                                             -- the lifetimes get resolved as `'a`
[INFO] [stdout] ...
[INFO] [stdout] 519 |         &'a self,
[INFO] [stdout]     |          ^^ these lifetimes flow to the output
[INFO] [stdout] 520 |         level: usize,
[INFO] [stdout] 521 |         slice: &'a mut [U],
[INFO] [stdout]     |                 ^^ these lifetimes flow to the output
[INFO] [stdout] 522 |     ) -> traits!(&'a mut [U]) {
[INFO] [stdout]     |                   -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 220 -     ($t: ty) => { impl DoubleEndedIterator<Item = $t> + ExactSizeIterator + '_ };
[INFO] [stdout] 220 +     ($t: ty) => { impl DoubleEndedIterator<Item = $t> + ExactSizeIterator + 'a };
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/mset.rs:580:21
[INFO] [stdout]     |
[INFO] [stdout] 580 |     pub fn iter_mut(&mut self) -> slice::IterMut<Self> {
[INFO] [stdout]     |                     ^^^^^^^^^     -------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 580 |     pub fn iter_mut(&mut self) -> slice::IterMut<'_, Self> {
[INFO] [stdout]     |                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/set.rs:570:28
[INFO] [stdout]     |
[INFO] [stdout] 570 |     pub unsafe fn iter_mut(&mut self) -> slice::IterMut<Self> {
[INFO] [stdout]     |                            ^^^^^^^^^     -------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                            |
[INFO] [stdout]     |                            this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 570 |     pub unsafe fn iter_mut(&mut self) -> slice::IterMut<'_, Self> {
[INFO] [stdout]     |                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 4.20s
[INFO] running `Command { std: "docker" "inspect" "88cf59b3342e7a8515839308919d49ae926eef66b834b50e870fbc18b9195f34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88cf59b3342e7a8515839308919d49ae926eef66b834b50e870fbc18b9195f34", kill_on_drop: false }`
[INFO] [stdout] 88cf59b3342e7a8515839308919d49ae926eef66b834b50e870fbc18b9195f34
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] a83fd4b6e566276b9030f82473731acbeb39c3f1886c016b18df8fd7e359f676
[INFO] running `Command { std: "docker" "start" "-a" "a83fd4b6e566276b9030f82473731acbeb39c3f1886c016b18df8fd7e359f676", kill_on_drop: false }`
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/lib.rs:140:13
[INFO] [stderr]     |
[INFO] [stderr] 140 |     fn iter(&self) -> slice::Iter<Self> {
[INFO] [stderr]     |             ^^^^^     ----------------- the lifetime gets resolved as `'_`
[INFO] [stderr]     |             |
[INFO] [stderr]     |             this lifetime flows to the output
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]     |
[INFO] [stderr] 140 |     fn iter(&self) -> slice::Iter<'_, Self> {
[INFO] [stderr]     |                                   +++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/levels.rs:502:10
[INFO] [stderr]     |
[INFO] [stderr] 220 |     ($t: ty) => { impl DoubleEndedIterator<Item = $t> + ExactSizeIterator + '_ };
[INFO] [stderr]     |                                                                             -- the lifetimes get resolved as `'a`
[INFO] [stderr] ...
[INFO] [stderr] 502 |         &'a self,
[INFO] [stderr]     |          ^^ these lifetimes flow to the output
[INFO] [stderr] 503 |         level: usize,
[INFO] [stderr] 504 |         slice: &'a [U],
[INFO] [stderr]     |                 ^^ these lifetimes flow to the output
[INFO] [stderr] 505 |     ) -> traits!(&'a [U]) {
[INFO] [stderr]     |                   -- the lifetimes get resolved as `'a`
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to consistently use `'a`
[INFO] [stderr]     |
[INFO] [stderr] 220 -     ($t: ty) => { impl DoubleEndedIterator<Item = $t> + ExactSizeIterator + '_ };
[INFO] [stderr] 220 +     ($t: ty) => { impl DoubleEndedIterator<Item = $t> + ExactSizeIterator + 'a };
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/levels.rs:519:10
[INFO] [stderr]     |
[INFO] [stderr] 220 |     ($t: ty) => { impl DoubleEndedIterator<Item = $t> + ExactSizeIterator + '_ };
[INFO] [stderr]     |                                                                             -- the lifetimes get resolved as `'a`
[INFO] [stderr] ...
[INFO] [stderr] 519 |         &'a self,
[INFO] [stderr]     |          ^^ these lifetimes flow to the output
[INFO] [stderr] 520 |         level: usize,
[INFO] [stderr] 521 |         slice: &'a mut [U],
[INFO] [stderr]     |                 ^^ these lifetimes flow to the output
[INFO] [stderr] 522 |     ) -> traits!(&'a mut [U]) {
[INFO] [stderr]     |                   -- the lifetimes get resolved as `'a`
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to consistently use `'a`
[INFO] [stderr]     |
[INFO] [stderr] 220 -     ($t: ty) => { impl DoubleEndedIterator<Item = $t> + ExactSizeIterator + '_ };
[INFO] [stderr] 220 +     ($t: ty) => { impl DoubleEndedIterator<Item = $t> + ExactSizeIterator + 'a };
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout] 
[INFO] [stderr]    --> src/mset.rs:580:21
[INFO] [stdout] running 36 tests
[INFO] [stderr]     |
[INFO] [stderr] 580 |     pub fn iter_mut(&mut self) -> slice::IterMut<Self> {
[INFO] [stderr]     |                     ^^^^^^^^^     -------------------- the lifetime gets resolved as `'_`
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     this lifetime flows to the output
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]     |
[INFO] [stderr] 580 |     pub fn iter_mut(&mut self) -> slice::IterMut<'_, Self> {
[INFO] [stderr]     |                                                  +++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/set.rs:570:28
[INFO] [stderr]     |
[INFO] [stderr] 570 |     pub unsafe fn iter_mut(&mut self) -> slice::IterMut<Self> {
[INFO] [stderr]     |                            ^^^^^^^^^     -------------------- the lifetime gets resolved as `'_`
[INFO] [stderr]     |                            |
[INFO] [stderr]     |                            this lifetime flows to the output
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]     |
[INFO] [stderr] 570 |     pub unsafe fn iter_mut(&mut self) -> slice::IterMut<'_, Self> {
[INFO] [stderr]     |                                                         +++
[INFO] [stderr] 
[INFO] [stderr] warning: `hfs` (lib) generated 5 warnings (run `cargo fix --lib -p hfs` to apply 5 suggestions)
[INFO] [stderr] warning: `hfs` (lib test) generated 5 warnings (5 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/hfs-b7d4583e1c6d07ac)
[INFO] [stdout] test tests::mset_empty ... ok
[INFO] [stdout] test tests::mset_contains ... ok
[INFO] [stdout] test tests::mset_disjoint ... ok
[INFO] [stdout] test tests::mset_eq ... ok
[INFO] [stdout] test tests::mset_choose ... ok
[INFO] [stdout] test tests::mset_nat ... ok
[INFO] [stdout] test tests::mset_flatten ... ok
[INFO] [stdout] test tests::mset_singleton ... ok
[INFO] [stdout] test tests::mset_powerset ... ok
[INFO] [stdout] test tests::mset_pair ... ok
[INFO] [stdout] test tests::mset_disjoint_set ... ok
[INFO] [stdout] test tests::mset_disjoint_pairwise_set ... ok
[INFO] [stdout] test tests::mset_suite ... ok
[INFO] [stdout] test tests::mset_subset ... ok
[INFO] [stdout] test tests::mset_inter ... ok
[INFO] [stdout] test tests::set_disjoint_pairwise_set ... ok
[INFO] [stdout] test tests::mset_is_set ... ok
[INFO] [stdout] test tests::set_empty ... ok
[INFO] [stdout] test tests::set_choose ... ok
[INFO] [stdout] test tests::set_disjoint_set ... ok
[INFO] [stdout] test tests::set_contains ... ok
[INFO] [stdout] test tests::set_is_set ... ok
[INFO] [stdout] test tests::set_eq ... ok
[INFO] [stdout] test tests::mset_union ... ok
[INFO] [stdout] test tests::set_disjoint ... ok
[INFO] [stdout] test tests::set_nat ... ok
[INFO] [stdout] test tests::set_kpair ... ok
[INFO] [stdout] test tests::set_inter ... ok
[INFO] [stdout] test tests::set_singleton ... ok
[INFO] [stdout] test tests::set_powerset ... ok
[INFO] [stdout] test tests::set_suite ... ok
[INFO] [stdout] test tests::set_subset ... ok
[INFO] [stdout] test tests::mset_sum ... ok
[INFO] [stdout] test tests::set_pair ... ok
[INFO] [stdout] test tests::set_union ... ok
[INFO] [stdout] test tests::set_sum ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 36 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.15s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a83fd4b6e566276b9030f82473731acbeb39c3f1886c016b18df8fd7e359f676", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a83fd4b6e566276b9030f82473731acbeb39c3f1886c016b18df8fd7e359f676", kill_on_drop: false }`
[INFO] [stdout] a83fd4b6e566276b9030f82473731acbeb39c3f1886c016b18df8fd7e359f676