[INFO] cloning repository https://github.com/Darkeyes712/rust_algorithms
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Darkeyes712/rust_algorithms" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDarkeyes712%2Frust_algorithms", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDarkeyes712%2Frust_algorithms'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8a17895c6db3e2f57148b983b83091a8bbb13865
[INFO] checking Darkeyes712/rust_algorithms/8a17895c6db3e2f57148b983b83091a8bbb13865 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDarkeyes712%2Frust_algorithms" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Darkeyes712/rust_algorithms on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Darkeyes712/rust_algorithms
[INFO] finished tweaking git repo https://github.com/Darkeyes712/rust_algorithms
[INFO] tweaked toml for git repo https://github.com/Darkeyes712/rust_algorithms written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Darkeyes712/rust_algorithms 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" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 23a060de529d4cf22c6aef379531c49782fa0e978d4275fe3430b19a8bbe2ad1
[INFO] running `Command { std: "docker" "start" "-a" "23a060de529d4cf22c6aef379531c49782fa0e978d4275fe3430b19a8bbe2ad1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "23a060de529d4cf22c6aef379531c49782fa0e978d4275fe3430b19a8bbe2ad1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23a060de529d4cf22c6aef379531c49782fa0e978d4275fe3430b19a8bbe2ad1", kill_on_drop: false }`
[INFO] [stdout] 23a060de529d4cf22c6aef379531c49782fa0e978d4275fe3430b19a8bbe2ad1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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 -Dtail_expr_drop_order" "-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 60f83dbbf268c26c175016c7e480cfd53bf2be986b19e488596ad7798ccede1f
[INFO] running `Command { std: "docker" "start" "-a" "60f83dbbf268c26c175016c7e480cfd53bf2be986b19e488596ad7798ccede1f", kill_on_drop: false }`
[INFO] [stderr]     Checking double_linked_list v0.1.0 (/opt/rustwide/workdir/double_linked_list)
[INFO] [stderr]     Checking linked_list v0.1.0 (/opt/rustwide/workdir/linked_list)
[INFO] [stderr]     Checking rust_algorithms v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]    --> double_linked_list/src/algorithm.rs:145:9
[INFO] [stdout]     |
[INFO] [stdout] 145 |     use super::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> double_linked_list/src/algorithm.rs:114:27
[INFO] [stdout]     |
[INFO] [stdout] 114 |     pub fn pop(&mut self, value: T) {
[INFO] [stdout]     |                           ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> double_linked_list/src/algorithm.rs:118:31
[INFO] [stdout]     |
[INFO] [stdout] 118 |     pub fn prepend(&mut self, value: T) {
[INFO] [stdout]     |                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> double_linked_list/src/algorithm.rs:122:33
[INFO] [stdout]     |
[INFO] [stdout] 122 |     pub fn pop_first(&mut self, value: T) {
[INFO] [stdout]     |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> double_linked_list/src/algorithm.rs:126:27
[INFO] [stdout]     |
[INFO] [stdout] 126 |     pub fn get(&mut self, value: T) {
[INFO] [stdout]     |                           ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> double_linked_list/src/algorithm.rs:130:27
[INFO] [stdout]     |
[INFO] [stdout] 130 |     pub fn set(&mut self, value: T) {
[INFO] [stdout]     |                           ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> double_linked_list/src/algorithm.rs:134:30
[INFO] [stdout]     |
[INFO] [stdout] 134 |     pub fn insert(&mut self, value: T) {
[INFO] [stdout]     |                              ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> double_linked_list/src/algorithm.rs:138:30
[INFO] [stdout]     |
[INFO] [stdout] 138 |     pub fn remove(&mut self, value: T) {
[INFO] [stdout]     |                              ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> double_linked_list/src/algorithm.rs:114:27
[INFO] [stdout]     |
[INFO] [stdout] 114 |     pub fn pop(&mut self, value: T) {
[INFO] [stdout]     |                           ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> double_linked_list/src/algorithm.rs:118:31
[INFO] [stdout]     |
[INFO] [stdout] 118 |     pub fn prepend(&mut self, value: T) {
[INFO] [stdout]     |                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> double_linked_list/src/algorithm.rs:122:33
[INFO] [stdout]     |
[INFO] [stdout] 122 |     pub fn pop_first(&mut self, value: T) {
[INFO] [stdout]     |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> double_linked_list/src/algorithm.rs:126:27
[INFO] [stdout]     |
[INFO] [stdout] 126 |     pub fn get(&mut self, value: T) {
[INFO] [stdout]     |                           ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> double_linked_list/src/algorithm.rs:130:27
[INFO] [stdout]     |
[INFO] [stdout] 130 |     pub fn set(&mut self, value: T) {
[INFO] [stdout]     |                           ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> double_linked_list/src/algorithm.rs:134:30
[INFO] [stdout]     |
[INFO] [stdout] 134 |     pub fn insert(&mut self, value: T) {
[INFO] [stdout]     |                              ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> double_linked_list/src/algorithm.rs:138:30
[INFO] [stdout]     |
[INFO] [stdout] 138 |     pub fn remove(&mut self, value: T) {
[INFO] [stdout]     |                              ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> double_linked_list/src/algorithm.rs:114:27
[INFO] [stdout]     |
[INFO] [stdout] 114 |     pub fn pop(&mut self, value: T) {
[INFO] [stdout]     |                           ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> double_linked_list/src/algorithm.rs:118:31
[INFO] [stdout]     |
[INFO] [stdout] 118 |     pub fn prepend(&mut self, value: T) {
[INFO] [stdout]     |                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> double_linked_list/src/algorithm.rs:122:33
[INFO] [stdout]     |
[INFO] [stdout] 122 |     pub fn pop_first(&mut self, value: T) {
[INFO] [stdout]     |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> double_linked_list/src/algorithm.rs:126:27
[INFO] [stdout]     |
[INFO] [stdout] 126 |     pub fn get(&mut self, value: T) {
[INFO] [stdout]     |                           ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> double_linked_list/src/algorithm.rs:130:27
[INFO] [stdout]     |
[INFO] [stdout] 130 |     pub fn set(&mut self, value: T) {
[INFO] [stdout]     |                           ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> double_linked_list/src/algorithm.rs:134:30
[INFO] [stdout]     |
[INFO] [stdout] 134 |     pub fn insert(&mut self, value: T) {
[INFO] [stdout]     |                              ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> double_linked_list/src/algorithm.rs:138:30
[INFO] [stdout]     |
[INFO] [stdout] 138 |     pub fn remove(&mut self, value: T) {
[INFO] [stdout]     |                              ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple methods are never used
[INFO] [stdout]    --> double_linked_list/src/algorithm.rs:114:12
[INFO] [stdout]     |
[INFO] [stdout] 33  | impl<T: std::fmt::Debug + Clone> KolzoDoublyLinkedList<T> {
[INFO] [stdout]     | --------------------------------------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 114 |     pub fn pop(&mut self, value: T) {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 118 |     pub fn prepend(&mut self, value: T) {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 122 |     pub fn pop_first(&mut self, value: T) {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 126 |     pub fn get(&mut self, value: T) {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 130 |     pub fn set(&mut self, value: T) {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 134 |     pub fn insert(&mut self, value: T) {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 138 |     pub fn remove(&mut self, value: T) {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]    --> double_linked_list/src/algorithm.rs:145:9
[INFO] [stdout]     |
[INFO] [stdout] 145 |     use super::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> double_linked_list/src/algorithm.rs:114:27
[INFO] [stdout]     |
[INFO] [stdout] 114 |     pub fn pop(&mut self, value: T) {
[INFO] [stdout]     |                           ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> double_linked_list/src/algorithm.rs:118:31
[INFO] [stdout]     |
[INFO] [stdout] 118 |     pub fn prepend(&mut self, value: T) {
[INFO] [stdout]     |                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> double_linked_list/src/algorithm.rs:122:33
[INFO] [stdout]     |
[INFO] [stdout] 122 |     pub fn pop_first(&mut self, value: T) {
[INFO] [stdout]     |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> double_linked_list/src/algorithm.rs:126:27
[INFO] [stdout]     |
[INFO] [stdout] 126 |     pub fn get(&mut self, value: T) {
[INFO] [stdout]     |                           ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> double_linked_list/src/algorithm.rs:130:27
[INFO] [stdout]     |
[INFO] [stdout] 130 |     pub fn set(&mut self, value: T) {
[INFO] [stdout]     |                           ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> double_linked_list/src/algorithm.rs:134:30
[INFO] [stdout]     |
[INFO] [stdout] 134 |     pub fn insert(&mut self, value: T) {
[INFO] [stdout]     |                              ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> double_linked_list/src/algorithm.rs:138:30
[INFO] [stdout]     |
[INFO] [stdout] 138 |     pub fn remove(&mut self, value: T) {
[INFO] [stdout]     |                              ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple methods are never used
[INFO] [stdout]    --> double_linked_list/src/algorithm.rs:114:12
[INFO] [stdout]     |
[INFO] [stdout] 33  | impl<T: std::fmt::Debug + Clone> KolzoDoublyLinkedList<T> {
[INFO] [stdout]     | --------------------------------------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 114 |     pub fn pop(&mut self, value: T) {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 118 |     pub fn prepend(&mut self, value: T) {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 122 |     pub fn pop_first(&mut self, value: T) {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 126 |     pub fn get(&mut self, value: T) {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 130 |     pub fn set(&mut self, value: T) {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 134 |     pub fn insert(&mut self, value: T) {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 138 |     pub fn remove(&mut self, value: T) {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "60f83dbbf268c26c175016c7e480cfd53bf2be986b19e488596ad7798ccede1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60f83dbbf268c26c175016c7e480cfd53bf2be986b19e488596ad7798ccede1f", kill_on_drop: false }`
[INFO] [stdout] 60f83dbbf268c26c175016c7e480cfd53bf2be986b19e488596ad7798ccede1f