[INFO] fetching crate altdeque 1.0.0...
[INFO] testing altdeque-1.0.0 against master#2fd6efc32704647e64d3d646d21c4c68eae100e4 for pr-149852-1
[INFO] extracting crate altdeque 1.0.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate altdeque 1.0.0
[INFO] finished tweaking crates.io crate altdeque 1.0.0
[INFO] tweaked toml for crates.io crate altdeque 1.0.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate altdeque 1.0.0 on toolchain 2fd6efc32704647e64d3d646d21c4c68eae100e4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a362166782a7264280017f4e2a6591f45fc3a401fa804a950fec532ebe743b6e
[INFO] running `Command { std: "docker" "start" "-a" "a362166782a7264280017f4e2a6591f45fc3a401fa804a950fec532ebe743b6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a362166782a7264280017f4e2a6591f45fc3a401fa804a950fec532ebe743b6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a362166782a7264280017f4e2a6591f45fc3a401fa804a950fec532ebe743b6e", kill_on_drop: false }`
[INFO] [stdout] a362166782a7264280017f4e2a6591f45fc3a401fa804a950fec532ebe743b6e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 57b1ada61cf7147abcd15f65a5f9b98f5043d431a5a804a34e7ef6e353d0aba6
[INFO] running `Command { std: "docker" "start" "-a" "57b1ada61cf7147abcd15f65a5f9b98f5043d431a5a804a34e7ef6e353d0aba6", kill_on_drop: false }`
[INFO] [stderr]    Compiling altdeque v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]     --> src/lib.rs:1636:21
[INFO] [stdout]      |
[INFO] [stdout] 1636 |     pub fn drain<R>(&mut self, range: R) -> Drain<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]      = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]      |
[INFO] [stdout] 1636 |     pub fn drain<R>(&mut self, range: R) -> Drain<'_, T>
[INFO] [stdout]      |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "57b1ada61cf7147abcd15f65a5f9b98f5043d431a5a804a34e7ef6e353d0aba6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57b1ada61cf7147abcd15f65a5f9b98f5043d431a5a804a34e7ef6e353d0aba6", kill_on_drop: false }`
[INFO] [stdout] 57b1ada61cf7147abcd15f65a5f9b98f5043d431a5a804a34e7ef6e353d0aba6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b52c627f12c14e21698345d15fc953179f00c2131777e04e1484306cb9d697a6
[INFO] running `Command { std: "docker" "start" "-a" "b52c627f12c14e21698345d15fc953179f00c2131777e04e1484306cb9d697a6", kill_on_drop: false }`
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]     --> src/lib.rs:1636:21
[INFO] [stdout]      |
[INFO] [stdout] 1636 |     pub fn drain<R>(&mut self, range: R) -> Drain<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]      = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]      |
[INFO] [stdout] 1636 |     pub fn drain<R>(&mut self, range: R) -> Drain<'_, T>
[INFO] [stdout]      |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling altdeque v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]     --> src/lib.rs:1636:21
[INFO] [stdout]      |
[INFO] [stdout] 1636 |     pub fn drain<R>(&mut self, range: R) -> Drain<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]      = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]      |
[INFO] [stdout] 1636 |     pub fn drain<R>(&mut self, range: R) -> Drain<'_, T>
[INFO] [stdout]      |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.68s
[INFO] running `Command { std: "docker" "inspect" "b52c627f12c14e21698345d15fc953179f00c2131777e04e1484306cb9d697a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b52c627f12c14e21698345d15fc953179f00c2131777e04e1484306cb9d697a6", kill_on_drop: false }`
[INFO] [stdout] b52c627f12c14e21698345d15fc953179f00c2131777e04e1484306cb9d697a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c2ccd34b75fbee850d5e06cc453838c64295b451d393cb5505f5700feaee192f
[INFO] running `Command { std: "docker" "start" "-a" "c2ccd34b75fbee850d5e06cc453838c64295b451d393cb5505f5700feaee192f", kill_on_drop: false }`
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]     --> src/lib.rs:1636:21
[INFO] [stderr]      |
[INFO] [stderr] 1636 |     pub fn drain<R>(&mut self, range: R) -> Drain<T>
[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] 1636 |     pub fn drain<R>(&mut self, range: R) -> Drain<'_, T>
[INFO] [stderr]      |                                                   +++
[INFO] [stderr] 
[INFO] [stderr] warning: `altdeque` (lib) generated 1 warning (run `cargo fix --lib -p altdeque` to apply 1 suggestion)
[INFO] [stderr] warning: `altdeque` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/altdeque-f6a4e27b343c1e90)
[INFO] [stdout] 
[INFO] [stdout] running 62 tests
[INFO] [stdout] test tests::test_append ... ok
[INFO] [stdout] test tests::test_as_slices ... ok
[INFO] [stdout] test tests::test_binary_search ... ok
[INFO] [stdout] test tests::test_binary_search_by ... ok
[INFO] [stdout] test tests::test_binary_search_by_key ... ok
[INFO] [stdout] test tests::test_clear ... ok
[INFO] [stdout] test tests::test_contains ... ok
[INFO] [stdout] test tests::test_drain ... ok
[INFO] [stdout] test tests::test_get ... ok
[INFO] [stdout] test tests::test_insert ... ok
[INFO] [stdout] test tests::test_iter ... ok
[INFO] [stdout] test tests::test_iter_mut ... ok
[INFO] [stdout] test tests::test_len_and_empty ... ok
[INFO] [stdout] test tests::test_make_contiguous ... ok
[INFO] [stdout] test tests::test_front ... ok
[INFO] [stdout] test tests::test_back ... ok
[INFO] [stdout] test tests::test_new ... ok
[INFO] [stdout] test tests::test_partition_point ... ok
[INFO] [stdout] test tests::test_pop_back ... ok
[INFO] [stdout] test tests::test_pop_front ... ok
[INFO] [stdout] test tests::test_push_back ... ok
[INFO] [stdout] test tests::test_push_front ... ok
[INFO] [stdout] test tests::test_range ... ok
[INFO] [stdout] test tests::test_range_mut ... ok
[INFO] [stdout] test tests::test_resize ... ok
[INFO] [stdout] test tests::test_remove ... ok
[INFO] [stdout] test tests::test_resize_with ... ok
[INFO] [stdout] test tests::test_retain_mut ... ok
[INFO] [stdout] test tests::test_retain ... ok
[INFO] [stdout] test tests::test_shrink ... ok
[INFO] [stdout] test tests::test_split_off ... ok
[INFO] [stdout] test tests::test_reserve_and_exact ... ok
[INFO] [stdout] test tests::test_swap ... ok
[INFO] [stdout] test tests::test_rotate ... ok
[INFO] [stdout] test tests::test_append_overflow - should panic ... ok
[INFO] [stdout] test tests::test_drain_out_of_bounds_end - should panic ... ok
[INFO] [stdout] test tests::test_insert_out_of_bounds - should panic ... ok
[INFO] [stdout] test tests::test_swap_remove_back ... ok
[INFO] [stdout] test tests::test_drain_invalid_bounds - should panic ... ok
[INFO] [stdout] test tests::test_swap_remove_front ... ok
[INFO] [stdout] test tests::test_drain_out_of_bounds_start - should panic ... ok
[INFO] [stdout] test tests::test_trait_clone ... ok
[INFO] [stdout] test tests::test_trait_debug ... ok
[INFO] [stdout] test tests::test_trait_default ... ok
[INFO] [stdout] test tests::test_trait_extend ... ok
[INFO] [stdout] test tests::test_trait_from ... ok
[INFO] [stdout] test tests::test_trait_index ... ok
[INFO] [stdout] test tests::test_trait_from_iterator ... ok
[INFO] [stdout] test tests::test_trait_hash ... ok
[INFO] [stdout] test tests::test_trait_index_mut ... ok
[INFO] [stdout] test tests::test_split_off_out_of_bounds - should panic ... ok
[INFO] [stdout] test tests::test_trait_into_iter ... ok
[INFO] [stdout] test tests::test_trait_partial_eq ... ok
[INFO] [stdout] test tests::test_trait_ord ... ok
[INFO] [stdout] test tests::test_swap_out_of_bounds - should panic ... ok
[INFO] [stdout] test tests::test_trait_partial_ord ... ok
[INFO] [stderr]    Doc-tests altdeque
[INFO] [stdout] test tests::test_truncate ... ok
[INFO] [stdout] test tests::test_swap_out_of_bounds2 - should panic ... ok
[INFO] [stdout] test tests::test_trait_drop ... ok
[INFO] [stdout] test tests::test_trait_index_out_of_bounds - should panic ... ok
[INFO] [stdout] test tests::test_with_capacity ... ok
[INFO] [stdout] test tests::test_trait_index_mut_out_of_bounds - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 62 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 50 tests
[INFO] [stdout] test src/lib.rs - (line 15) ... FAILED
[INFO] [stdout] test src/lib.rs - AltDeque<T>::back (line 581) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::as_slices (line 187) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::back_mut (line 604) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::binary_search_by (line 1401) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::binary_search (line 1348) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::capacity (line 138) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::append (line 1000) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::binary_search_by_key (line 1448) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::binary_search (line 1362) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::front (line 533) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::get (line 231) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::drain (line 1630) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::clear (line 490) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::is_empty (line 166) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::front_mut (line 557) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::get_mut (line 257) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::insert (line 892) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::len (line 152) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::contains (line 511) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::iter (line 1525) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::iter_mut (line 1543) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::make_contiguous (line 1130) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::make_contiguous (line 1111) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::pop_back (line 671) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::new (line 110) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::partition_point (line 1500) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::pop_front (line 634) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::range (line 1560) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::push_back (line 723) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::partition_point (line 1488) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::range_mut (line 1586) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::reserve (line 312) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::remove (line 846) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::resize (line 1716) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::resize_with (line 336) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::push_front (line 701) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::retain_mut (line 1056) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::rotate_right (line 1296) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::reserve_exact (line 289) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::shrink_to_fit (line 366) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::rotate_left (line 1250) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::swap (line 753) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::retain (line 1034) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::with_capacity (line 123) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::split_off (line 944) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::shrink_to (line 386) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::swap_remove_back (line 816) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::truncate (line 429) ... ok
[INFO] [stdout] test src/lib.rs - AltDeque<T>::swap_remove_front (line 792) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 15) stdout ----
[INFO] [stdout] error: expected one of `!` or `::`, found `->`
[INFO] [stdout]   --> src/lib.rs:16:16
[INFO] [stdout]    |
[INFO] [stdout] 16 |         growth ->               <- growth
[INFO] [stdout]    |                ^^ expected one of `!` or `::`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 15)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 49 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 4.61s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "c2ccd34b75fbee850d5e06cc453838c64295b451d393cb5505f5700feaee192f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2ccd34b75fbee850d5e06cc453838c64295b451d393cb5505f5700feaee192f", kill_on_drop: false }`
[INFO] [stdout] c2ccd34b75fbee850d5e06cc453838c64295b451d393cb5505f5700feaee192f
