[INFO] cloning repository https://github.com/HugoPhi/myrustlib
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/HugoPhi/myrustlib" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHugoPhi%2Fmyrustlib", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHugoPhi%2Fmyrustlib'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f68cf52cafc1d0b10ae2f753e8a59ba24fd48bcf
[INFO] testing HugoPhi/myrustlib against master#733b47ea4b1b86216f14ef56e49440c33933f230+rustflags=-Copt-level=3 for pr-138759
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHugoPhi%2Fmyrustlib" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/HugoPhi/myrustlib
[INFO] finished tweaking git repo https://github.com/HugoPhi/myrustlib
[INFO] tweaked toml for git repo https://github.com/HugoPhi/myrustlib written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/HugoPhi/myrustlib on toolchain 733b47ea4b1b86216f14ef56e49440c33933f230
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/HugoPhi/myrustlib 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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] da6abdbab790cd9a54b742c9c593a6384e6338ba6ca5ac17e52b573f25f6e121
[INFO] running `Command { std: "docker" "start" "-a" "da6abdbab790cd9a54b742c9c593a6384e6338ba6ca5ac17e52b573f25f6e121", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "da6abdbab790cd9a54b742c9c593a6384e6338ba6ca5ac17e52b573f25f6e121", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da6abdbab790cd9a54b742c9c593a6384e6338ba6ca5ac17e52b573f25f6e121", kill_on_drop: false }`
[INFO] [stdout] da6abdbab790cd9a54b742c9c593a6384e6338ba6ca5ac17e52b573f25f6e121
[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 -Copt-level=3" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4d96b00fa34309d78ccbe00479cbcf4b2ec90f29ed355d98eb0dbab51faca806
[INFO] running `Command { std: "docker" "start" "-a" "4d96b00fa34309d78ccbe00479cbcf4b2ec90f29ed355d98eb0dbab51faca806", kill_on_drop: false }`
[INFO] [stderr]    Compiling hym v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/linear/box_linked_list.rs:653:17
[INFO] [stdout]     |
[INFO] [stdout] 653 |     pub fn iter(&self) -> LinkedListBorrowIterator<T> {
[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] 653 |     pub fn iter(&self) -> LinkedListBorrowIterator<'_, T> {
[INFO] [stdout]     |                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/linear/box_linked_list.rs:684:21
[INFO] [stdout]     |
[INFO] [stdout] 684 |     pub fn iter_mut(&mut self) -> LinkedListBorrowMutIterator<T> {
[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] 684 |     pub fn iter_mut(&mut self) -> LinkedListBorrowMutIterator<'_, T> {
[INFO] [stdout]     |                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/linear/nonull_linked_list.rs:586:17
[INFO] [stdout]     |
[INFO] [stdout] 586 |     pub fn iter(&self) -> LinkedListBorrowIterator<T> {
[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] 586 |     pub fn iter(&self) -> LinkedListBorrowIterator<'_, T> {
[INFO] [stdout]     |                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/linear/nonull_linked_list.rs:607:21
[INFO] [stdout]     |
[INFO] [stdout] 607 |     pub fn iter_mut(&mut self) -> LinkedListBorrowMutIterator<T> {
[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] 607 |     pub fn iter_mut(&mut self) -> LinkedListBorrowMutIterator<'_, T> {
[INFO] [stdout]     |                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `Command { std: "docker" "inspect" "4d96b00fa34309d78ccbe00479cbcf4b2ec90f29ed355d98eb0dbab51faca806", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d96b00fa34309d78ccbe00479cbcf4b2ec90f29ed355d98eb0dbab51faca806", kill_on_drop: false }`
[INFO] [stdout] 4d96b00fa34309d78ccbe00479cbcf4b2ec90f29ed355d98eb0dbab51faca806
[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 -Copt-level=3" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b113bdbc086c3e789cda2474752fdd648493f149b68e2d5a9ecc3d1976359e10
[INFO] running `Command { std: "docker" "start" "-a" "b113bdbc086c3e789cda2474752fdd648493f149b68e2d5a9ecc3d1976359e10", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling os_str_bytes v6.6.1
[INFO] [stderr]    Compiling textwrap v0.16.1
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/linear/box_linked_list.rs:653:17
[INFO] [stdout]     |
[INFO] [stdout] 653 |     pub fn iter(&self) -> LinkedListBorrowIterator<T> {
[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] 653 |     pub fn iter(&self) -> LinkedListBorrowIterator<'_, T> {
[INFO] [stdout]     |                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/linear/box_linked_list.rs:684:21
[INFO] [stdout]     |
[INFO] [stdout] 684 |     pub fn iter_mut(&mut self) -> LinkedListBorrowMutIterator<T> {
[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] 684 |     pub fn iter_mut(&mut self) -> LinkedListBorrowMutIterator<'_, T> {
[INFO] [stdout]     |                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/linear/nonull_linked_list.rs:586:17
[INFO] [stdout]     |
[INFO] [stdout] 586 |     pub fn iter(&self) -> LinkedListBorrowIterator<T> {
[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] 586 |     pub fn iter(&self) -> LinkedListBorrowIterator<'_, T> {
[INFO] [stdout]     |                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/linear/nonull_linked_list.rs:607:21
[INFO] [stdout]     |
[INFO] [stdout] 607 |     pub fn iter_mut(&mut self) -> LinkedListBorrowMutIterator<T> {
[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] 607 |     pub fn iter_mut(&mut self) -> LinkedListBorrowMutIterator<'_, T> {
[INFO] [stdout]     |                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling clap_lex v0.2.4
[INFO] [stderr]    Compiling clap v3.2.25
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling syn v2.0.96
[INFO] [stderr]    Compiling serde_derive v1.0.217
[INFO] [stderr]    Compiling serde v1.0.217
[INFO] [stderr]    Compiling serde_json v1.0.135
[INFO] [stderr]    Compiling ciborium v0.2.2
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling criterion v0.4.0
[INFO] [stderr]    Compiling hym v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/linear/box_linked_list.rs:653:17
[INFO] [stdout]     |
[INFO] [stdout] 653 |     pub fn iter(&self) -> LinkedListBorrowIterator<T> {
[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] 653 |     pub fn iter(&self) -> LinkedListBorrowIterator<'_, T> {
[INFO] [stdout]     |                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/linear/box_linked_list.rs:684:21
[INFO] [stdout]     |
[INFO] [stdout] 684 |     pub fn iter_mut(&mut self) -> LinkedListBorrowMutIterator<T> {
[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] 684 |     pub fn iter_mut(&mut self) -> LinkedListBorrowMutIterator<'_, T> {
[INFO] [stdout]     |                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/linear/nonull_linked_list.rs:586:17
[INFO] [stdout]     |
[INFO] [stdout] 586 |     pub fn iter(&self) -> LinkedListBorrowIterator<T> {
[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] 586 |     pub fn iter(&self) -> LinkedListBorrowIterator<'_, T> {
[INFO] [stdout]     |                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/linear/nonull_linked_list.rs:607:21
[INFO] [stdout]     |
[INFO] [stdout] 607 |     pub fn iter_mut(&mut self) -> LinkedListBorrowMutIterator<T> {
[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] 607 |     pub fn iter_mut(&mut self) -> LinkedListBorrowMutIterator<'_, T> {
[INFO] [stdout]     |                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1m 32s
[INFO] running `Command { std: "docker" "inspect" "b113bdbc086c3e789cda2474752fdd648493f149b68e2d5a9ecc3d1976359e10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b113bdbc086c3e789cda2474752fdd648493f149b68e2d5a9ecc3d1976359e10", kill_on_drop: false }`
[INFO] [stdout] b113bdbc086c3e789cda2474752fdd648493f149b68e2d5a9ecc3d1976359e10
[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 -Copt-level=3" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7a93083eb842f501876243d61b3f6dcf7d096baf12a6f2a767b3e56aef4cb326
[INFO] running `Command { std: "docker" "start" "-a" "7a93083eb842f501876243d61b3f6dcf7d096baf12a6f2a767b3e56aef4cb326", kill_on_drop: false }`
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/linear/box_linked_list.rs:653:17
[INFO] [stderr]     |
[INFO] [stderr] 653 |     pub fn iter(&self) -> LinkedListBorrowIterator<T> {
[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] 653 |     pub fn iter(&self) -> LinkedListBorrowIterator<'_, T> {
[INFO] [stderr]     |                                                    +++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/linear/box_linked_list.rs:684:21
[INFO] [stderr]     |
[INFO] [stderr] 684 |     pub fn iter_mut(&mut self) -> LinkedListBorrowMutIterator<T> {
[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] 684 |     pub fn iter_mut(&mut self) -> LinkedListBorrowMutIterator<'_, T> {
[INFO] [stderr]     |                                                               +++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/linear/nonull_linked_list.rs:586:17
[INFO] [stderr]     |
[INFO] [stderr] 586 |     pub fn iter(&self) -> LinkedListBorrowIterator<T> {
[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] 586 |     pub fn iter(&self) -> LinkedListBorrowIterator<'_, T> {
[INFO] [stderr]     |                                                    +++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/linear/nonull_linked_list.rs:607:21
[INFO] [stderr]     |
[INFO] [stderr] 607 |     pub fn iter_mut(&mut self) -> LinkedListBorrowMutIterator<T> {
[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] 607 |     pub fn iter_mut(&mut self) -> LinkedListBorrowMutIterator<'_, T> {
[INFO] [stderr]     |                                                               +++
[INFO] [stderr] 
[INFO] [stderr] warning: `hym` (lib) generated 4 warnings
[INFO] [stderr] warning: `hym` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/hym-d04f946b5cde76db)
[INFO] [stdout] 
[INFO] [stdout] running 56 tests
[INFO] [stdout] test linear::box_linked_list::tests::test_clean ... ok
[INFO] [stdout] test linear::box_linked_list::tests::test_get ... ok
[INFO] [stdout] test linear::box_linked_list::tests::test_iter ... ok
[INFO] [stdout] test linear::box_linked_list::tests::test_iter_mut ... ok
[INFO] [stdout] test linear::box_linked_list::tests::test_insert ... ok
[INFO] [stdout] test linear::box_linked_list::tests::test_ix2val ... ok
[INFO] [stdout] test linear::box_linked_list::tests::test_len ... ok
[INFO] [stdout] test linear::box_linked_list::tests::test_pop_head ... ok
[INFO] [stdout] test linear::box_linked_list::tests::test_from_iter ... ok
[INFO] [stdout] test linear::box_linked_list::tests::test_clone ... ok
[INFO] [stdout] test linear::box_linked_list::tests::test_insert_remove_multiple ... ok
[INFO] [stdout] test linear::box_linked_list::tests::test_push_head ... ok
[INFO] [stdout] test linear::box_linked_list::tests::test_into_iter ... ok
[INFO] [stdout] test linear::box_linked_list::tests::test_push_back ... ok
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/deps/hym-d04f946b5cde76db` (signal: 11, SIGSEGV: invalid memory reference)
[INFO] running `Command { std: "docker" "inspect" "7a93083eb842f501876243d61b3f6dcf7d096baf12a6f2a767b3e56aef4cb326", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a93083eb842f501876243d61b3f6dcf7d096baf12a6f2a767b3e56aef4cb326", kill_on_drop: false }`
[INFO] [stdout] 7a93083eb842f501876243d61b3f6dcf7d096baf12a6f2a767b3e56aef4cb326
