[INFO] cloning repository https://github.com/detoxifiedplant/linked-lists
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/detoxifiedplant/linked-lists" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdetoxifiedplant%2Flinked-lists", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdetoxifiedplant%2Flinked-lists'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9daf9747bb01f3cfbca8fed1dce13a2be7eb4966
[INFO] testing detoxifiedplant/linked-lists against try#db823df02fd0c2cf67b43025ac3fef3f2d743245 for pr-150681
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdetoxifiedplant%2Flinked-lists" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/detoxifiedplant/linked-lists
[INFO] finished tweaking git repo https://github.com/detoxifiedplant/linked-lists
[INFO] tweaked toml for git repo https://github.com/detoxifiedplant/linked-lists written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/detoxifiedplant/linked-lists on toolchain db823df02fd0c2cf67b43025ac3fef3f2d743245
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/detoxifiedplant/linked-lists 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" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3d6aed059786945701d6fdbc1b33e567e12210f056f784e1ace1abab3e3be064
[INFO] running `Command { std: "docker" "start" "-a" "3d6aed059786945701d6fdbc1b33e567e12210f056f784e1ace1abab3e3be064", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3d6aed059786945701d6fdbc1b33e567e12210f056f784e1ace1abab3e3be064", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d6aed059786945701d6fdbc1b33e567e12210f056f784e1ace1abab3e3be064", kill_on_drop: false }`
[INFO] [stdout] 3d6aed059786945701d6fdbc1b33e567e12210f056f784e1ace1abab3e3be064
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1a6cf0f2a179f94fdfe3a922c794873df0ef03c51d109f8ec32d5444c3f94066
[INFO] running `Command { std: "docker" "start" "-a" "1a6cf0f2a179f94fdfe3a922c794873df0ef03c51d109f8ec32d5444c3f94066", kill_on_drop: false }`
[INFO] [stderr]    Compiling lists v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `in_front`
[INFO] [stdout]    --> src/unsafe_dqueue.rs:613:21
[INFO] [stdout]     |
[INFO] [stdout] 613 |                 let in_front = self.list.front.unwrap();
[INFO] [stdout]     |                     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_in_front`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `in_back`
[INFO] [stdout]    --> src/unsafe_dqueue.rs:614:21
[INFO] [stdout]     |
[INFO] [stdout] 614 |                 let in_back = self.list.back.unwrap();
[INFO] [stdout]     |                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_in_back`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/four.rs:128:24
[INFO] [stdout]     |
[INFO] [stdout] 128 | pub struct Iter<'a, T>(Option<Ref<'a, Node<T>>>);
[INFO] [stdout]     |            ----        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/four.rs:94:23
[INFO] [stdout]    |
[INFO] [stdout] 94 |     pub fn peek_front(&self) -> Option<Ref<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] 94 |     pub fn peek_front(&self) -> Option<Ref<'_, T>> {
[INFO] [stdout]    |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/four.rs:101:22
[INFO] [stdout]     |
[INFO] [stdout] 101 |     pub fn peek_back(&self) -> Option<Ref<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] 101 |     pub fn peek_back(&self) -> Option<Ref<'_, T>> {
[INFO] [stdout]     |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/four.rs:107:27
[INFO] [stdout]     |
[INFO] [stdout] 107 |     pub fn peek_front_mut(&mut self) -> Option<RefMut<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] 107 |     pub fn peek_front_mut(&mut self) -> Option<RefMut<'_, T>> {
[INFO] [stdout]     |                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/four.rs:113:26
[INFO] [stdout]     |
[INFO] [stdout] 113 |     pub fn peek_back_mut(&mut self) -> Option<RefMut<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] 113 |     pub fn peek_back_mut(&mut self) -> Option<RefMut<'_, T>> {
[INFO] [stdout]     |                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/unsafe_dqueue.rs:138:17
[INFO] [stdout]     |
[INFO] [stdout] 138 |     pub fn iter(&self) -> Iter<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] 138 |     pub fn iter(&self) -> Iter<'_, T> {
[INFO] [stdout]     |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/unsafe_dqueue.rs:147:21
[INFO] [stdout]     |
[INFO] [stdout] 147 |     pub fn iter_mut(&self) -> IterMut<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] 147 |     pub fn iter_mut(&self) -> IterMut<'_, T> {
[INFO] [stdout]     |                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/unsafe_dqueue.rs:160:23
[INFO] [stdout]     |
[INFO] [stdout] 160 |     pub fn cursor_mut(&mut self) -> CursorMut<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] 160 |     pub fn cursor_mut(&mut self) -> CursorMut<'_, T> {
[INFO] [stdout]     |                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "1a6cf0f2a179f94fdfe3a922c794873df0ef03c51d109f8ec32d5444c3f94066", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a6cf0f2a179f94fdfe3a922c794873df0ef03c51d109f8ec32d5444c3f94066", kill_on_drop: false }`
[INFO] [stdout] 1a6cf0f2a179f94fdfe3a922c794873df0ef03c51d109f8ec32d5444c3f94066
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f46cc6c2250f2f24cc14971a807fdaaa361762e682212c618639d713732b6cb4
[INFO] running `Command { std: "docker" "start" "-a" "f46cc6c2250f2f24cc14971a807fdaaa361762e682212c618639d713732b6cb4", kill_on_drop: false }`
[INFO] [stdout] warning: unused variable: `in_front`
[INFO] [stdout]    --> src/unsafe_dqueue.rs:613:21
[INFO] [stdout]     |
[INFO] [stdout] 613 |                 let in_front = self.list.front.unwrap();
[INFO] [stdout]     |                     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_in_front`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `in_back`
[INFO] [stdout]    --> src/unsafe_dqueue.rs:614:21
[INFO] [stdout]     |
[INFO] [stdout] 614 |                 let in_back = self.list.back.unwrap();
[INFO] [stdout]     |                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_in_back`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/four.rs:128:24
[INFO] [stdout]     |
[INFO] [stdout] 128 | pub struct Iter<'a, T>(Option<Ref<'a, Node<T>>>);
[INFO] [stdout]     |            ----        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/four.rs:94:23
[INFO] [stdout]    |
[INFO] [stdout] 94 |     pub fn peek_front(&self) -> Option<Ref<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] 94 |     pub fn peek_front(&self) -> Option<Ref<'_, T>> {
[INFO] [stdout]    |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/four.rs:101:22
[INFO] [stdout]     |
[INFO] [stdout] 101 |     pub fn peek_back(&self) -> Option<Ref<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] 101 |     pub fn peek_back(&self) -> Option<Ref<'_, T>> {
[INFO] [stdout]     |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/four.rs:107:27
[INFO] [stdout]     |
[INFO] [stdout] 107 |     pub fn peek_front_mut(&mut self) -> Option<RefMut<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] 107 |     pub fn peek_front_mut(&mut self) -> Option<RefMut<'_, T>> {
[INFO] [stdout]     |                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/four.rs:113:26
[INFO] [stdout]     |
[INFO] [stdout] 113 |     pub fn peek_back_mut(&mut self) -> Option<RefMut<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] 113 |     pub fn peek_back_mut(&mut self) -> Option<RefMut<'_, T>> {
[INFO] [stdout]     |                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/unsafe_dqueue.rs:138:17
[INFO] [stdout]     |
[INFO] [stdout] 138 |     pub fn iter(&self) -> Iter<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] 138 |     pub fn iter(&self) -> Iter<'_, T> {
[INFO] [stdout]     |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/unsafe_dqueue.rs:147:21
[INFO] [stdout]     |
[INFO] [stdout] 147 |     pub fn iter_mut(&self) -> IterMut<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] 147 |     pub fn iter_mut(&self) -> IterMut<'_, T> {
[INFO] [stdout]     |                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/unsafe_dqueue.rs:160:23
[INFO] [stdout]     |
[INFO] [stdout] 160 |     pub fn cursor_mut(&mut self) -> CursorMut<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] 160 |     pub fn cursor_mut(&mut self) -> CursorMut<'_, T> {
[INFO] [stdout]     |                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling lists v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `in_front`
[INFO] [stdout]    --> src/unsafe_dqueue.rs:613:21
[INFO] [stdout]     |
[INFO] [stdout] 613 |                 let in_front = self.list.front.unwrap();
[INFO] [stdout]     |                     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_in_front`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `in_back`
[INFO] [stdout]    --> src/unsafe_dqueue.rs:614:21
[INFO] [stdout]     |
[INFO] [stdout] 614 |                 let in_back = self.list.back.unwrap();
[INFO] [stdout]     |                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_in_back`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/four.rs:128:24
[INFO] [stdout]     |
[INFO] [stdout] 128 | pub struct Iter<'a, T>(Option<Ref<'a, Node<T>>>);
[INFO] [stdout]     |            ----        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/four.rs:94:23
[INFO] [stdout]    |
[INFO] [stdout] 94 |     pub fn peek_front(&self) -> Option<Ref<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] 94 |     pub fn peek_front(&self) -> Option<Ref<'_, T>> {
[INFO] [stdout]    |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/four.rs:101:22
[INFO] [stdout]     |
[INFO] [stdout] 101 |     pub fn peek_back(&self) -> Option<Ref<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] 101 |     pub fn peek_back(&self) -> Option<Ref<'_, T>> {
[INFO] [stdout]     |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/four.rs:107:27
[INFO] [stdout]     |
[INFO] [stdout] 107 |     pub fn peek_front_mut(&mut self) -> Option<RefMut<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] 107 |     pub fn peek_front_mut(&mut self) -> Option<RefMut<'_, T>> {
[INFO] [stdout]     |                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/four.rs:113:26
[INFO] [stdout]     |
[INFO] [stdout] 113 |     pub fn peek_back_mut(&mut self) -> Option<RefMut<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] 113 |     pub fn peek_back_mut(&mut self) -> Option<RefMut<'_, T>> {
[INFO] [stdout]     |                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/unsafe_dqueue.rs:138:17
[INFO] [stdout]     |
[INFO] [stdout] 138 |     pub fn iter(&self) -> Iter<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] 138 |     pub fn iter(&self) -> Iter<'_, T> {
[INFO] [stdout]     |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/unsafe_dqueue.rs:147:21
[INFO] [stdout]     |
[INFO] [stdout] 147 |     pub fn iter_mut(&self) -> IterMut<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] 147 |     pub fn iter_mut(&self) -> IterMut<'_, T> {
[INFO] [stdout]     |                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/unsafe_dqueue.rs:160:23
[INFO] [stdout]     |
[INFO] [stdout] 160 |     pub fn cursor_mut(&mut self) -> CursorMut<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] 160 |     pub fn cursor_mut(&mut self) -> CursorMut<'_, T> {
[INFO] [stdout]     |                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.27s
[INFO] running `Command { std: "docker" "inspect" "f46cc6c2250f2f24cc14971a807fdaaa361762e682212c618639d713732b6cb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f46cc6c2250f2f24cc14971a807fdaaa361762e682212c618639d713732b6cb4", kill_on_drop: false }`
[INFO] [stdout] f46cc6c2250f2f24cc14971a807fdaaa361762e682212c618639d713732b6cb4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7ba44ad62f4c97acae198d638d87424da84d8e6a9ddb85ebaae74f7ba96f3661
[INFO] running `Command { std: "docker" "start" "-a" "7ba44ad62f4c97acae198d638d87424da84d8e6a9ddb85ebaae74f7ba96f3661", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `in_front`
[INFO] [stdout] 
[INFO] [stderr]    --> src/unsafe_dqueue.rs:613:21
[INFO] [stdout] running 31 tests
[INFO] [stderr]     |
[INFO] [stdout] test first::test::basics ... ok
[INFO] [stderr] 613 |                 let in_front = self.list.front.unwrap();
[INFO] [stdout] test five::test::iter_mut ... ok
[INFO] [stderr]     |                     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_in_front`
[INFO] [stdout] test five::test::into_iter ... ok
[INFO] [stderr]     |
[INFO] [stdout] test five::test::basics ... ok
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] test five::test::iter ... ok
[INFO] [stderr] 
[INFO] [stdout] test five::test::miri_food ... ok
[INFO] [stderr] warning: unused variable: `in_back`
[INFO] [stdout] test four::test::into_iter ... ok
[INFO] [stderr]    --> src/unsafe_dqueue.rs:614:21
[INFO] [stdout] test four::test::basics ... ok
[INFO] [stderr]     |
[INFO] [stdout] test four::test::peek ... ok
[INFO] [stderr] 614 |                 let in_back = self.list.back.unwrap();
[INFO] [stdout] test second::test::peek ... ok
[INFO] [stderr]     |                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_in_back`
[INFO] [stdout] test three::test::basics ... ok
[INFO] [stderr] 
[INFO] [stdout] test second::test::iter ... ok
[INFO] [stderr] warning: field `0` is never read
[INFO] [stdout] test second::test::into_iter ... ok
[INFO] [stderr]    --> src/four.rs:128:24
[INFO] [stdout] test second::test::iter_mut ... ok
[INFO] [stderr]     |
[INFO] [stdout] test unsafe_dqueue::test::test_basic ... ok
[INFO] [stderr] 128 | pub struct Iter<'a, T>(Option<Ref<'a, Node<T>>>);
[INFO] [stdout] test three::test::iter ... ok
[INFO] [stderr]     |            ----        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] test unsafe_dqueue::test::test_basic_front ... ok
[INFO] [stderr]     |            |
[INFO] [stdout] test unsafe_dqueue::test::test_cursor_move_peek ... ok
[INFO] [stderr]     |            field in this struct
[INFO] [stdout] test unsafe_dqueue::test::test_eq ... ok
[INFO] [stderr]     |
[INFO] [stdout] test unsafe_dqueue::test::test_iterator ... ok
[INFO] [stderr]     = help: consider removing this field
[INFO] [stdout] test unsafe_dqueue::test::test_debug ... ok
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] test unsafe_dqueue::test::test_mut_iter ... ok
[INFO] [stderr] 
[INFO] [stdout] test unsafe_dqueue::test::test_iterator_double_end ... ok
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout] test unsafe_dqueue::test::test_hashmap ... ok
[INFO] [stderr]   --> src/four.rs:94:23
[INFO] [stdout] test unsafe_dqueue::test::test_ord ... ok
[INFO] [stderr]    |
[INFO] [stdout] test unsafe_dqueue::test::test_rev_iter ... ok
[INFO] [stderr] 94 |     pub fn peek_front(&self) -> Option<Ref<T>> {
[INFO] [stdout] test unsafe_dqueue::test::test_iterator_mut_double_end ... ok
[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] 94 |     pub fn peek_front(&self) -> Option<Ref<'_, T>> {
[INFO] [stderr]    |                                            +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/four.rs:101:22
[INFO] [stderr]     |
[INFO] [stderr] 101 |     pub fn peek_back(&self) -> Option<Ref<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] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 101 |     pub fn peek_back(&self) -> Option<Ref<'_, T>> {
[INFO] [stderr]     |                                           +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/four.rs:107:27
[INFO] [stderr]     |
[INFO] [stderr] 107 |     pub fn peek_front_mut(&mut self) -> Option<RefMut<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] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 107 |     pub fn peek_front_mut(&mut self) -> Option<RefMut<'_, T>> {
[INFO] [stderr]     |                                                       +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/four.rs:113:26
[INFO] [stderr]     |
[INFO] [stderr] 113 |     pub fn peek_back_mut(&mut self) -> Option<RefMut<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] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 113 |     pub fn peek_back_mut(&mut self) -> Option<RefMut<'_, T>> {
[INFO] [stderr]     |                                                      +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/unsafe_dqueue.rs:138:17
[INFO] [stderr]     |
[INFO] [stderr] 138 |     pub fn iter(&self) -> Iter<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] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 138 |     pub fn iter(&self) -> Iter<'_, T> {
[INFO] [stderr]     |                                +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/unsafe_dqueue.rs:147:21
[INFO] [stderr]     |
[INFO] [stderr] 147 |     pub fn iter_mut(&self) -> IterMut<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] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 147 |     pub fn iter_mut(&self) -> IterMut<'_, T> {
[INFO] [stderr]     |                                       +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/unsafe_dqueue.rs:160:23
[INFO] [stderr]     |
[INFO] [stderr] 160 |     pub fn cursor_mut(&mut self) -> CursorMut<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] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 160 |     pub fn cursor_mut(&mut self) -> CursorMut<'_, T> {
[INFO] [stderr]     |                                               +++
[INFO] [stderr] 
[INFO] [stderr] warning: `lists` (lib) generated 10 warnings (run `cargo fix --lib -p lists` to apply 9 suggestions)
[INFO] [stderr] warning: `lists` (lib test) generated 10 warnings (10 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/lists-f1cb0463e2b6368f)
[INFO] [stdout] test unsafe_dqueue::test::test_ord_nan ... ok
[INFO] [stdout] test unsafe_dqueue::test::test_split ... ok
[INFO] [stdout] test unsafe_dqueue::test::test_cursor_mut_insert ... FAILED
[INFO] [stdout] test second::test::basics ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- unsafe_dqueue::test::test_cursor_mut_insert stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'unsafe_dqueue::test::test_cursor_mut_insert' (35) panicked at src/unsafe_dqueue.rs:1088:9:
[INFO] [stdout] assertion `left == right` failed
[INFO] [stdout]   left: [10, 7, 1, 8, 2, 3, 4, 5, 6, 9]
[INFO] [stdout]  right: []
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5d13c9076482 - std[3f03f8b59f91bef1]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5d13c9076482 - std[3f03f8b59f91bef1]::backtrace_rs::backtrace::trace_unsynchronized::<std[3f03f8b59f91bef1]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5d13c9076482 - std[3f03f8b59f91bef1]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5d13c9076482 - <<std[3f03f8b59f91bef1]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[585f66e14d78f9ba]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5d13c908ad3a - <core[585f66e14d78f9ba]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5d13c908ad3a - core[585f66e14d78f9ba]::fmt::write
[INFO] [stdout]    6:     0x5d13c907b286 - std[3f03f8b59f91bef1]::io::default_write_fmt::<alloc[15e7b27aba85d2e2]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5d13c907b286 - <alloc[15e7b27aba85d2e2]::vec::Vec<u8> as std[3f03f8b59f91bef1]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5d13c9054c1f - <std[3f03f8b59f91bef1]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5d13c9054c1f - std[3f03f8b59f91bef1]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5d13c906e7b9 - std[3f03f8b59f91bef1]::panicking::default_hook
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5d13c900a1ee - <alloc[15e7b27aba85d2e2]::boxed::Box<dyn for<'a, 'b> core[585f66e14d78f9ba]::ops::function::Fn<(&'a std[3f03f8b59f91bef1]::panic::PanicHookInfo<'b>,), Output = ()> + core[585f66e14d78f9ba]::marker::Sync + core[585f66e14d78f9ba]::marker::Send> as core[585f66e14d78f9ba]::ops::function::Fn<(&std[3f03f8b59f91bef1]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5d13c900a1ee - test[30224e0cb089acd2]::test_main_with_exit_callback::<test[30224e0cb089acd2]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5d13c906e972 - <alloc[15e7b27aba85d2e2]::boxed::Box<dyn for<'a, 'b> core[585f66e14d78f9ba]::ops::function::Fn<(&'a std[3f03f8b59f91bef1]::panic::PanicHookInfo<'b>,), Output = ()> + core[585f66e14d78f9ba]::marker::Sync + core[585f66e14d78f9ba]::marker::Send> as core[585f66e14d78f9ba]::ops::function::Fn<(&std[3f03f8b59f91bef1]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5d13c906e972 - std[3f03f8b59f91bef1]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5d13c9054cd8 - std[3f03f8b59f91bef1]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5d13c9049ec9 - std[3f03f8b59f91bef1]::sys::backtrace::__rust_end_short_backtrace::<std[3f03f8b59f91bef1]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5d13c9055b2d - __rustc[caa99d26c7bae192]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5d13c908b43c - core[585f66e14d78f9ba]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5d13c908b2f3 - core[585f66e14d78f9ba]::panicking::assert_failed_inner
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/core/src/panicking.rs:439:17
[INFO] [stdout]   20:     0x5d13c8ff0e85 - core[585f66e14d78f9ba]::panicking::assert_failed::<alloc[15e7b27aba85d2e2]::vec::Vec<&u32>, alloc[15e7b27aba85d2e2]::vec::Vec<&u32>>
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/core/src/panicking.rs:394:5
[INFO] [stdout]   21:     0x5d13c8fe54db - lists[7674e6e4088071e6]::unsafe_dqueue::test::check_links::<u32>
[INFO] [stdout]                                at /opt/rustwide/workdir/src/unsafe_dqueue.rs:1088:9
[INFO] [stdout]   22:     0x5d13c8feab60 - lists[7674e6e4088071e6]::unsafe_dqueue::test::test_cursor_mut_insert
[INFO] [stdout]                                at /opt/rustwide/workdir/src/unsafe_dqueue.rs:1019:9
[INFO] [stdout]   23:     0x5d13c8fe5897 - lists[7674e6e4088071e6]::unsafe_dqueue::test::test_cursor_mut_insert::{closure#0}
[INFO] [stdout]                                at /opt/rustwide/workdir/src/unsafe_dqueue.rs:1002:32
[INFO] [stdout]   24:     0x5d13c8ff34a6 - <lists[7674e6e4088071e6]::unsafe_dqueue::test::test_cursor_mut_insert::{closure#0} as core[585f66e14d78f9ba]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x5d13c8ffe59b - <fn() -> core[585f66e14d78f9ba]::result::Result<(), alloc[15e7b27aba85d2e2]::string::String> as core[585f66e14d78f9ba]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   26:     0x5d13c8ffe59b - test[30224e0cb089acd2]::__rust_begin_short_backtrace::<core[585f66e14d78f9ba]::result::Result<(), alloc[15e7b27aba85d2e2]::string::String>, fn() -> core[585f66e14d78f9ba]::result::Result<(), alloc[15e7b27aba85d2e2]::string::String>>
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/test/src/lib.rs:663:18
[INFO] [stdout]   27:     0x5d13c900adfa - test[30224e0cb089acd2]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/test/src/lib.rs:686:74
[INFO] [stdout]   28:     0x5d13c900adfa - <core[585f66e14d78f9ba]::panic::unwind_safe::AssertUnwindSafe<test[30224e0cb089acd2]::run_test_in_process::{closure#0}> as core[585f66e14d78f9ba]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   29:     0x5d13c900adfa - std[3f03f8b59f91bef1]::panicking::catch_unwind::do_call::<core[585f66e14d78f9ba]::panic::unwind_safe::AssertUnwindSafe<test[30224e0cb089acd2]::run_test_in_process::{closure#0}>, core[585f66e14d78f9ba]::result::Result<(), alloc[15e7b27aba85d2e2]::string::String>>
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/panicking.rs:581:40
[INFO] [stdout]   30:     0x5d13c900adfa - std[3f03f8b59f91bef1]::panicking::catch_unwind::<core[585f66e14d78f9ba]::result::Result<(), alloc[15e7b27aba85d2e2]::string::String>, core[585f66e14d78f9ba]::panic::unwind_safe::AssertUnwindSafe<test[30224e0cb089acd2]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/panicking.rs:544:19
[INFO] [stdout]   31:     0x5d13c900adfa - std[3f03f8b59f91bef1]::panic::catch_unwind::<core[585f66e14d78f9ba]::panic::unwind_safe::AssertUnwindSafe<test[30224e0cb089acd2]::run_test_in_process::{closure#0}>, core[585f66e14d78f9ba]::result::Result<(), alloc[15e7b27aba85d2e2]::string::String>>
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/panic.rs:359:14
[INFO] [stdout]   32:     0x5d13c900adfa - test[30224e0cb089acd2]::run_test_in_process
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/test/src/lib.rs:686:27
[INFO] [stdout]   33:     0x5d13c900adfa - test[30224e0cb089acd2]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/test/src/lib.rs:607:43
[INFO] [stdout]   34:     0x5d13c90052c4 - test[30224e0cb089acd2]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/test/src/lib.rs:637:41
[INFO] [stdout]   35:     0x5d13c90052c4 - std[3f03f8b59f91bef1]::sys::backtrace::__rust_begin_short_backtrace::<test[30224e0cb089acd2]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   36:     0x5d13c900d8f2 - std[3f03f8b59f91bef1]::thread::lifecycle::spawn_unchecked::<test[30224e0cb089acd2]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   37:     0x5d13c900d8f2 - <core[585f66e14d78f9ba]::panic::unwind_safe::AssertUnwindSafe<std[3f03f8b59f91bef1]::thread::lifecycle::spawn_unchecked<test[30224e0cb089acd2]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[585f66e14d78f9ba]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   38:     0x5d13c900d8f2 - std[3f03f8b59f91bef1]::panicking::catch_unwind::do_call::<core[585f66e14d78f9ba]::panic::unwind_safe::AssertUnwindSafe<std[3f03f8b59f91bef1]::thread::lifecycle::spawn_unchecked<test[30224e0cb089acd2]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/panicking.rs:581:40
[INFO] [stdout]   39:     0x5d13c900d8f2 - std[3f03f8b59f91bef1]::panicking::catch_unwind::<(), core[585f66e14d78f9ba]::panic::unwind_safe::AssertUnwindSafe<std[3f03f8b59f91bef1]::thread::lifecycle::spawn_unchecked<test[30224e0cb089acd2]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/panicking.rs:544:19
[INFO] [stdout]   40:     0x5d13c900d8f2 - std[3f03f8b59f91bef1]::panic::catch_unwind::<core[585f66e14d78f9ba]::panic::unwind_safe::AssertUnwindSafe<std[3f03f8b59f91bef1]::thread::lifecycle::spawn_unchecked<test[30224e0cb089acd2]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/panic.rs:359:14
[INFO] [stdout]   41:     0x5d13c900d8f2 - std[3f03f8b59f91bef1]::thread::lifecycle::spawn_unchecked::<test[30224e0cb089acd2]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   42:     0x5d13c900d8f2 - <std[3f03f8b59f91bef1]::thread::lifecycle::spawn_unchecked<test[30224e0cb089acd2]::run_test::{closure#1}, ()>::{closure#1} as core[585f66e14d78f9ba]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   43:     0x5d13c9075d2f - <alloc[15e7b27aba85d2e2]::boxed::Box<dyn core[585f66e14d78f9ba]::ops::function::FnOnce<(), Output = ()> + core[585f66e14d78f9ba]::marker::Send> as core[585f66e14d78f9ba]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   44:     0x5d13c9075d2f - <std[3f03f8b59f91bef1]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/sys/thread/unix.rs:119:17
[INFO] [stdout]   45:     0x7ae38ef71aa4 - <unknown>
[INFO] [stdout]   46:     0x7ae38effea64 - clone
[INFO] [stdout]   47:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     unsafe_dqueue::test::test_cursor_mut_insert
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 30 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "7ba44ad62f4c97acae198d638d87424da84d8e6a9ddb85ebaae74f7ba96f3661", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ba44ad62f4c97acae198d638d87424da84d8e6a9ddb85ebaae74f7ba96f3661", kill_on_drop: false }`
[INFO] [stdout] 7ba44ad62f4c97acae198d638d87424da84d8e6a9ddb85ebaae74f7ba96f3661
