[INFO] cloning repository https://github.com/5hir0kur0/steiner_tree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/5hir0kur0/steiner_tree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F5hir0kur0%2Fsteiner_tree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F5hir0kur0%2Fsteiner_tree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 032f5974e805414feb27e94a4c605333a0153244
[INFO] checking 5hir0kur0/steiner_tree against master#c8551d3c63c51f290cf1dc9dc4714249ea849fd1 for pr-148946
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F5hir0kur0%2Fsteiner_tree" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/5hir0kur0/steiner_tree
[INFO] finished tweaking git repo https://github.com/5hir0kur0/steiner_tree
[INFO] tweaked toml for git repo https://github.com/5hir0kur0/steiner_tree written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/5hir0kur0/steiner_tree on toolchain c8551d3c63c51f290cf1dc9dc4714249ea849fd1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c8551d3c63c51f290cf1dc9dc4714249ea849fd1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/5hir0kur0/steiner_tree 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" "+c8551d3c63c51f290cf1dc9dc4714249ea849fd1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libc v0.2.87
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.3
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c8551d3c63c51f290cf1dc9dc4714249ea849fd1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2fb1fa76fee49f4440d1a12f4f4d18140f0b03ff344974672ef325c07c85abb1
[INFO] running `Command { std: "docker" "start" "-a" "2fb1fa76fee49f4440d1a12f4f4d18140f0b03ff344974672ef325c07c85abb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2fb1fa76fee49f4440d1a12f4f4d18140f0b03ff344974672ef325c07c85abb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fb1fa76fee49f4440d1a12f4f4d18140f0b03ff344974672ef325c07c85abb1", kill_on_drop: false }`
[INFO] [stdout] 2fb1fa76fee49f4440d1a12f4f4d18140f0b03ff344974672ef325c07c85abb1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c8551d3c63c51f290cf1dc9dc4714249ea849fd1" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e636f4bc57c9e5c7e1adc4309cf207ebfca5be7ea7f4f3ed70919321bf48ee74
[INFO] running `Command { std: "docker" "start" "-a" "e636f4bc57c9e5c7e1adc4309cf207ebfca5be7ea7f4f3ed70919321bf48ee74", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.3
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling libc v0.2.87
[INFO] [stderr]     Checking crossbeam-epoch v0.9.3
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking rayon-core v1.9.0
[INFO] [stderr]     Checking rayon v1.5.0
[INFO] [stderr]     Checking steiner_tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: multiple lines skipped by escaped newline
[INFO] [stdout]    --> src/graph.rs:423:14
[INFO] [stdout]     |
[INFO] [stdout] 423 |           END\n\
[INFO] [stdout]     |  ______________^
[INFO] [stdout] 424 | |
[INFO] [stdout] 425 | |         SECTION Terminals\n\
[INFO] [stdout]     | |________^ skipping everything up to and including this point
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple lines skipped by escaped newline
[INFO] [stdout]    --> src/graph.rs:423:14
[INFO] [stdout]     |
[INFO] [stdout] 423 |           END\n\
[INFO] [stdout]     |  ______________^
[INFO] [stdout] 424 | |
[INFO] [stdout] 425 | |         SECTION Terminals\n\
[INFO] [stdout]     | |________^ skipping everything up to and including this point
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple lines skipped by escaped newline
[INFO] [stdout]    --> src/graph.rs:429:14
[INFO] [stdout]     |
[INFO] [stdout] 429 |           END\n\
[INFO] [stdout]     |  ______________^
[INFO] [stdout] 430 | |
[INFO] [stdout] 431 | |         EOF\n"
[INFO] [stdout]     | |________^ skipping everything up to and including this point
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple lines skipped by escaped newline
[INFO] [stdout]    --> src/graph.rs:457:14
[INFO] [stdout]     |
[INFO] [stdout] 457 |           END\n\
[INFO] [stdout]     |  ______________^
[INFO] [stdout] 458 | |
[INFO] [stdout] 459 | |         SECTION Terminals\n\
[INFO] [stdout]     | |________^ skipping everything up to and including this point
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple lines skipped by escaped newline
[INFO] [stdout]    --> src/graph.rs:464:14
[INFO] [stdout]     |
[INFO] [stdout] 464 |           END\n\
[INFO] [stdout]     |  ______________^
[INFO] [stdout] 465 | |
[INFO] [stdout] 466 | |         EOF\n"
[INFO] [stdout]     | |________^ skipping everything up to and including this point
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple lines skipped by escaped newline
[INFO] [stdout]    --> src/graph.rs:429:14
[INFO] [stdout]     |
[INFO] [stdout] 429 |           END\n\
[INFO] [stdout]     |  ______________^
[INFO] [stdout] 430 | |
[INFO] [stdout] 431 | |         EOF\n"
[INFO] [stdout]     | |________^ skipping everything up to and including this point
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple lines skipped by escaped newline
[INFO] [stdout]    --> src/graph.rs:489:14
[INFO] [stdout]     |
[INFO] [stdout] 489 |           END\n\
[INFO] [stdout]     |  ______________^
[INFO] [stdout] 490 | |
[INFO] [stdout] 491 | |         SECTION Terminals\n\
[INFO] [stdout]     | |________^ skipping everything up to and including this point
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple lines skipped by escaped newline
[INFO] [stdout]    --> src/graph.rs:495:14
[INFO] [stdout]     |
[INFO] [stdout] 495 |           END\n\
[INFO] [stdout]     |  ______________^
[INFO] [stdout] 496 | |
[INFO] [stdout] 497 | |         EOF\n"
[INFO] [stdout]     | |________^ skipping everything up to and including this point
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple lines skipped by escaped newline
[INFO] [stdout]    --> src/graph.rs:457:14
[INFO] [stdout]     |
[INFO] [stdout] 457 |           END\n\
[INFO] [stdout]     |  ______________^
[INFO] [stdout] 458 | |
[INFO] [stdout] 459 | |         SECTION Terminals\n\
[INFO] [stdout]     | |________^ skipping everything up to and including this point
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple lines skipped by escaped newline
[INFO] [stdout]    --> src/graph.rs:521:14
[INFO] [stdout]     |
[INFO] [stdout] 521 |           END\n\
[INFO] [stdout]     |  ______________^
[INFO] [stdout] 522 | |
[INFO] [stdout] 523 | |         SECTION Terminals\n\
[INFO] [stdout]     | |________^ skipping everything up to and including this point
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple lines skipped by escaped newline
[INFO] [stdout]    --> src/graph.rs:530:14
[INFO] [stdout]     |
[INFO] [stdout] 530 |           END\n\
[INFO] [stdout]     |  ______________^
[INFO] [stdout] 531 | |
[INFO] [stdout] 532 | |         EOF\n"
[INFO] [stdout]     | |________^ skipping everything up to and including this point
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple lines skipped by escaped newline
[INFO] [stdout]    --> src/graph.rs:464:14
[INFO] [stdout]     |
[INFO] [stdout] 464 |           END\n\
[INFO] [stdout]     |  ______________^
[INFO] [stdout] 465 | |
[INFO] [stdout] 466 | |         EOF\n"
[INFO] [stdout]     | |________^ skipping everything up to and including this point
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple lines skipped by escaped newline
[INFO] [stdout]    --> src/graph.rs:562:14
[INFO] [stdout]     |
[INFO] [stdout] 562 |           END\n\
[INFO] [stdout]     |  ______________^
[INFO] [stdout] 563 | |
[INFO] [stdout] 564 | |         SECTION Terminals\n\
[INFO] [stdout]     | |________^ skipping everything up to and including this point
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple lines skipped by escaped newline
[INFO] [stdout]    --> src/graph.rs:489:14
[INFO] [stdout]     |
[INFO] [stdout] 489 |           END\n\
[INFO] [stdout]     |  ______________^
[INFO] [stdout] 490 | |
[INFO] [stdout] 491 | |         SECTION Terminals\n\
[INFO] [stdout]     | |________^ skipping everything up to and including this point
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple lines skipped by escaped newline
[INFO] [stdout]    --> src/graph.rs:570:14
[INFO] [stdout]     |
[INFO] [stdout] 570 |           END\n\
[INFO] [stdout]     |  ______________^
[INFO] [stdout] 571 | |
[INFO] [stdout] 572 | |         EOF\n"
[INFO] [stdout]     | |________^ skipping everything up to and including this point
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple lines skipped by escaped newline
[INFO] [stdout]    --> src/graph.rs:495:14
[INFO] [stdout]     |
[INFO] [stdout] 495 |           END\n\
[INFO] [stdout]     |  ______________^
[INFO] [stdout] 496 | |
[INFO] [stdout] 497 | |         EOF\n"
[INFO] [stdout]     | |________^ skipping everything up to and including this point
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple lines skipped by escaped newline
[INFO] [stdout]    --> src/graph.rs:521:14
[INFO] [stdout]     |
[INFO] [stdout] 521 |           END\n\
[INFO] [stdout]     |  ______________^
[INFO] [stdout] 522 | |
[INFO] [stdout] 523 | |         SECTION Terminals\n\
[INFO] [stdout]     | |________^ skipping everything up to and including this point
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple lines skipped by escaped newline
[INFO] [stdout]    --> src/graph.rs:530:14
[INFO] [stdout]     |
[INFO] [stdout] 530 |           END\n\
[INFO] [stdout]     |  ______________^
[INFO] [stdout] 531 | |
[INFO] [stdout] 532 | |         EOF\n"
[INFO] [stdout]     | |________^ skipping everything up to and including this point
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple lines skipped by escaped newline
[INFO] [stdout]    --> src/graph.rs:562:14
[INFO] [stdout]     |
[INFO] [stdout] 562 |           END\n\
[INFO] [stdout]     |  ______________^
[INFO] [stdout] 563 | |
[INFO] [stdout] 564 | |         SECTION Terminals\n\
[INFO] [stdout]     | |________^ skipping everything up to and including this point
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple lines skipped by escaped newline
[INFO] [stdout]    --> src/graph.rs:570:14
[INFO] [stdout]     |
[INFO] [stdout] 570 |           END\n\
[INFO] [stdout]     |  ______________^
[INFO] [stdout] 571 | |
[INFO] [stdout] 572 | |         EOF\n"
[INFO] [stdout]     | |________^ skipping everything up to and including this point
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/graph.rs:195:30
[INFO] [stdout]     |
[INFO] [stdout] 195 | fn to_next_whitespace(state: ParseState) -> ParseResult<(&str, ParseState)> {
[INFO] [stdout]     |                              ^^^^^^^^^^                  ^^^^  ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                              |                           |
[INFO] [stdout]     |                              |                           the same lifetime is elided here
[INFO] [stdout]     |                              the lifetime is hidden 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] 195 | fn to_next_whitespace(state: ParseState<'_>) -> ParseResult<(&str, ParseState<'_>)> {
[INFO] [stdout]     |                                        ++++                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/graph.rs:211:40
[INFO] [stdout]     |
[INFO] [stdout] 211 | fn current_line((input, line, column): ParseState) -> ParseResult<&str> {
[INFO] [stdout]     |                                        ^^^^^^^^^^                 ^^^^ the same lifetime is elided here
[INFO] [stdout]     |                                        |
[INFO] [stdout]     |                                        the lifetime is hidden 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] 211 | fn current_line((input, line, column): ParseState<'_>) -> ParseResult<&str> {
[INFO] [stdout]     |                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/util.rs:89:40
[INFO] [stdout]    |
[INFO] [stdout] 89 | pub fn combinations<T: Copy>(elements: &[T], n: usize) -> Combinations<T> {
[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] 89 | pub fn combinations<T: Copy>(elements: &[T], n: usize) -> Combinations<'_, T> {
[INFO] [stdout]    |                                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/util.rs:184:47
[INFO] [stdout]     |
[INFO] [stdout] 184 | pub fn non_trivial_subsets<T: Copy>(elements: &[T]) -> NonTrivialSubsets<T> {
[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] 184 | pub fn non_trivial_subsets<T: Copy>(elements: &[T]) -> NonTrivialSubsets<'_, T> {
[INFO] [stdout]     |                                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/graph.rs:195:30
[INFO] [stdout]     |
[INFO] [stdout] 195 | fn to_next_whitespace(state: ParseState) -> ParseResult<(&str, ParseState)> {
[INFO] [stdout]     |                              ^^^^^^^^^^                  ^^^^  ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                              |                           |
[INFO] [stdout]     |                              |                           the same lifetime is elided here
[INFO] [stdout]     |                              the lifetime is hidden 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] 195 | fn to_next_whitespace(state: ParseState<'_>) -> ParseResult<(&str, ParseState<'_>)> {
[INFO] [stdout]     |                                        ++++                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/graph.rs:211:40
[INFO] [stdout]     |
[INFO] [stdout] 211 | fn current_line((input, line, column): ParseState) -> ParseResult<&str> {
[INFO] [stdout]     |                                        ^^^^^^^^^^                 ^^^^ the same lifetime is elided here
[INFO] [stdout]     |                                        |
[INFO] [stdout]     |                                        the lifetime is hidden 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] 211 | fn current_line((input, line, column): ParseState<'_>) -> ParseResult<&str> {
[INFO] [stdout]     |                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/util.rs:89:40
[INFO] [stdout]    |
[INFO] [stdout] 89 | pub fn combinations<T: Copy>(elements: &[T], n: usize) -> Combinations<T> {
[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] 89 | pub fn combinations<T: Copy>(elements: &[T], n: usize) -> Combinations<'_, T> {
[INFO] [stdout]    |                                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/util.rs:184:47
[INFO] [stdout]     |
[INFO] [stdout] 184 | pub fn non_trivial_subsets<T: Copy>(elements: &[T]) -> NonTrivialSubsets<T> {
[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] 184 | pub fn non_trivial_subsets<T: Copy>(elements: &[T]) -> NonTrivialSubsets<'_, T> {
[INFO] [stdout]     |                                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.09s
[INFO] running `Command { std: "docker" "inspect" "e636f4bc57c9e5c7e1adc4309cf207ebfca5be7ea7f4f3ed70919321bf48ee74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e636f4bc57c9e5c7e1adc4309cf207ebfca5be7ea7f4f3ed70919321bf48ee74", kill_on_drop: false }`
[INFO] [stdout] e636f4bc57c9e5c7e1adc4309cf207ebfca5be7ea7f4f3ed70919321bf48ee74
