[INFO] cloning repository https://github.com/Takashiidobe/too-many-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/Takashiidobe/too-many-linked-lists" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTakashiidobe%2Ftoo-many-linked-lists", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTakashiidobe%2Ftoo-many-linked-lists'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] cc78419d00975592852e49f2009e639137d24a53 [INFO] testing Takashiidobe/too-many-linked-lists against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTakashiidobe%2Ftoo-many-linked-lists" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/Takashiidobe/too-many-linked-lists [INFO] finished tweaking git repo https://github.com/Takashiidobe/too-many-linked-lists [INFO] tweaked toml for git repo https://github.com/Takashiidobe/too-many-linked-lists written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/Takashiidobe/too-many-linked-lists on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/Takashiidobe/too-many-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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 31a7aa048ef18b7c500d04c0ecc3a9d724c1b377a0d8f68833ad931e7ac7ebf8 [INFO] running `Command { std: "docker" "start" "-a" "31a7aa048ef18b7c500d04c0ecc3a9d724c1b377a0d8f68833ad931e7ac7ebf8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "31a7aa048ef18b7c500d04c0ecc3a9d724c1b377a0d8f68833ad931e7ac7ebf8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "31a7aa048ef18b7c500d04c0ecc3a9d724c1b377a0d8f68833ad931e7ac7ebf8", kill_on_drop: false }` [INFO] [stdout] 31a7aa048ef18b7c500d04c0ecc3a9d724c1b377a0d8f68833ad931e7ac7ebf8 [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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c7e1aec5226637b0023c430a324c7ed2005b6e5261e3cfea8ef25a664223a397 [INFO] running `Command { std: "docker" "start" "-a" "c7e1aec5226637b0023c430a324c7ed2005b6e5261e3cfea8ef25a664223a397", kill_on_drop: false }` [INFO] [stderr] Compiling linked-lists v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/fourth.rs:95:23 [INFO] [stdout] | [INFO] [stdout] 95 | pub fn peek_front(&self) -> Option> { [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] 95 | pub fn peek_front(&self) -> Option> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/fourth.rs:101:22 [INFO] [stdout] | [INFO] [stdout] 101 | pub fn peek_back(&self) -> Option> { [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> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/fourth.rs:107:26 [INFO] [stdout] | [INFO] [stdout] 107 | pub fn peek_back_mut(&mut self) -> Option> { [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_back_mut(&mut self) -> Option> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/fourth.rs:113:27 [INFO] [stdout] | [INFO] [stdout] 113 | pub fn peek_front_mut(&mut self) -> Option> { [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_front_mut(&mut self) -> Option> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `linked_lists::first::*` [INFO] [stdout] --> src/main.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use linked_lists::first::*; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.54s [INFO] running `Command { std: "docker" "inspect" "c7e1aec5226637b0023c430a324c7ed2005b6e5261e3cfea8ef25a664223a397", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c7e1aec5226637b0023c430a324c7ed2005b6e5261e3cfea8ef25a664223a397", kill_on_drop: false }` [INFO] [stdout] c7e1aec5226637b0023c430a324c7ed2005b6e5261e3cfea8ef25a664223a397 [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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 7fe45fc625a43a6a3212cd55d9d1cd2f770515fc696754c557e7bede5b147da7 [INFO] running `Command { std: "docker" "start" "-a" "7fe45fc625a43a6a3212cd55d9d1cd2f770515fc696754c557e7bede5b147da7", kill_on_drop: false }` [INFO] [stderr] Compiling linked-lists v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/fourth.rs:95:23 [INFO] [stdout] | [INFO] [stdout] 95 | pub fn peek_front(&self) -> Option> { [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] 95 | pub fn peek_front(&self) -> Option> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/fourth.rs:101:22 [INFO] [stdout] | [INFO] [stdout] 101 | pub fn peek_back(&self) -> Option> { [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> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/fourth.rs:107:26 [INFO] [stdout] | [INFO] [stdout] 107 | pub fn peek_back_mut(&mut self) -> Option> { [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_back_mut(&mut self) -> Option> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/fourth.rs:113:27 [INFO] [stdout] | [INFO] [stdout] 113 | pub fn peek_front_mut(&mut self) -> Option> { [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_front_mut(&mut self) -> Option> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `linked_lists::first::*` [INFO] [stdout] --> src/main.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use linked_lists::first::*; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (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/fourth.rs:95:23 [INFO] [stdout] | [INFO] [stdout] 95 | pub fn peek_front(&self) -> Option> { [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] 95 | pub fn peek_front(&self) -> Option> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/fourth.rs:101:22 [INFO] [stdout] | [INFO] [stdout] 101 | pub fn peek_back(&self) -> Option> { [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> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/fourth.rs:107:26 [INFO] [stdout] | [INFO] [stdout] 107 | pub fn peek_back_mut(&mut self) -> Option> { [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_back_mut(&mut self) -> Option> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/fourth.rs:113:27 [INFO] [stdout] | [INFO] [stdout] 113 | pub fn peek_front_mut(&mut self) -> Option> { [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_front_mut(&mut self) -> Option> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.99s [INFO] running `Command { std: "docker" "inspect" "7fe45fc625a43a6a3212cd55d9d1cd2f770515fc696754c557e7bede5b147da7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7fe45fc625a43a6a3212cd55d9d1cd2f770515fc696754c557e7bede5b147da7", kill_on_drop: false }` [INFO] [stdout] 7fe45fc625a43a6a3212cd55d9d1cd2f770515fc696754c557e7bede5b147da7 [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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] b5e91fd810b9801eddb5a5e1a23b3817b1c02b207ee4769a182e59139ff3d843 [INFO] running `Command { std: "docker" "start" "-a" "b5e91fd810b9801eddb5a5e1a23b3817b1c02b207ee4769a182e59139ff3d843", kill_on_drop: false }` [INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stderr] --> src/fourth.rs:95:23 [INFO] [stderr] | [INFO] [stderr] 95 | pub fn peek_front(&self) -> Option> { [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] 95 | pub fn peek_front(&self) -> Option> { [INFO] [stderr] | +++ [INFO] [stderr] [INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stderr] --> src/fourth.rs:101:22 [INFO] [stderr] | [INFO] [stderr] 101 | pub fn peek_back(&self) -> Option> { [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> { [INFO] [stderr] | +++ [INFO] [stderr] [INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stderr] --> src/fourth.rs:107:26 [INFO] [stderr] | [INFO] [stderr] 107 | pub fn peek_back_mut(&mut self) -> Option> { [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_back_mut(&mut self) -> Option> { [INFO] [stderr] | +++ [INFO] [stderr] [INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stderr] --> src/fourth.rs:113:27 [INFO] [stderr] | [INFO] [stderr] 113 | pub fn peek_front_mut(&mut self) -> Option> { [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_front_mut(&mut self) -> Option> { [INFO] [stderr] | +++ [INFO] [stderr] [INFO] [stderr] warning: `linked-lists` (lib) generated 4 warnings (run `cargo fix --lib -p linked-lists` to apply 4 suggestions) [INFO] [stderr] warning: unused import: `linked_lists::first::*` [INFO] [stderr] --> src/main.rs:1:5 [INFO] [stderr] | [INFO] [stderr] 1 | use linked_lists::first::*; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stdout] [INFO] [stderr] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] running 11 tests [INFO] [stderr] [INFO] [stderr] warning: `linked-lists` (bin "linked-lists" test) generated 1 warning (run `cargo fix --bin "linked-lists" --tests` to apply 1 suggestion) [INFO] [stderr] warning: `linked-lists` (lib test) generated 4 warnings (4 duplicates) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/linked_lists-ce3524fc2f55c890) [INFO] [stdout] test fourth::test::into_iter ... ok [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/linked_lists-9b744f6c6eee6e54) [INFO] [stdout] test second::test::into_iter ... ok [INFO] [stdout] test second::test::iter ... ok [INFO] [stdout] test second::test::iter_mut ... ok [INFO] [stdout] test second::test::peek ... ok [INFO] [stdout] test first::test::basics ... ok [INFO] [stdout] test third::test::basics ... ok [INFO] [stdout] test fourth::test::basics ... ok [INFO] [stdout] test fourth::test::peek ... ok [INFO] [stdout] test third::test::iter ... ok [INFO] [stdout] test second::test::basics ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Doc-tests linked_lists [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "b5e91fd810b9801eddb5a5e1a23b3817b1c02b207ee4769a182e59139ff3d843", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b5e91fd810b9801eddb5a5e1a23b3817b1c02b207ee4769a182e59139ff3d843", kill_on_drop: false }` [INFO] [stdout] b5e91fd810b9801eddb5a5e1a23b3817b1c02b207ee4769a182e59139ff3d843