[INFO] cloning repository https://github.com/kingfree/rust-lists [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kingfree/rust-lists" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkingfree%2Frust-lists", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkingfree%2Frust-lists'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 3b529328280374620cafa34ab8a6f5e857ec8d69 [INFO] testing kingfree/rust-lists against try#028592fec99e54cc92def5a2a849c673b066dd93 for pr-146098 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkingfree%2Frust-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/kingfree/rust-lists [INFO] finished tweaking git repo https://github.com/kingfree/rust-lists [INFO] tweaked toml for git repo https://github.com/kingfree/rust-lists written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/kingfree/rust-lists on toolchain 028592fec99e54cc92def5a2a849c673b066dd93 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+028592fec99e54cc92def5a2a849c673b066dd93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/kingfree/rust-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" "+028592fec99e54cc92def5a2a849c673b066dd93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [INFO] testing kingfree/rust-lists against try#028592fec99e54cc92def5a2a849c673b066dd93 for pr-146098 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkingfree%2Frust-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/kingfree/rust-lists [INFO] finished tweaking git repo https://github.com/kingfree/rust-lists [INFO] tweaked toml for git repo https://github.com/kingfree/rust-lists written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/kingfree/rust-lists on toolchain 028592fec99e54cc92def5a2a849c673b066dd93 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+028592fec99e54cc92def5a2a849c673b066dd93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/kingfree/rust-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" "+028592fec99e54cc92def5a2a849c673b066dd93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+028592fec99e54cc92def5a2a849c673b066dd93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 1a71f50f8c1865e9cccff287a3e85b242c30e35c52024d66b0d200f5239d3ec0 [INFO] running `Command { std: "docker" "start" "-a" "1a71f50f8c1865e9cccff287a3e85b242c30e35c52024d66b0d200f5239d3ec0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "1a71f50f8c1865e9cccff287a3e85b242c30e35c52024d66b0d200f5239d3ec0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1a71f50f8c1865e9cccff287a3e85b242c30e35c52024d66b0d200f5239d3ec0", kill_on_drop: false }` [INFO] [stdout] 1a71f50f8c1865e9cccff287a3e85b242c30e35c52024d66b0d200f5239d3ec0 [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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+028592fec99e54cc92def5a2a849c673b066dd93" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 72f4945288747a79688907ed913665aba98ed8eda47002e60b265d2420de2e21 [INFO] running `Command { std: "docker" "start" "-a" "72f4945288747a79688907ed913665aba98ed8eda47002e60b265d2420de2e21", kill_on_drop: false }` [INFO] [stderr] Compiling rust-lists v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `super::List` [INFO] [stdout] --> src/fifth.rs:139:9 [INFO] [stdout] | [INFO] [stdout] 139 | use super::List; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `next` [INFO] [stdout] --> src/fourth.rs:171:18 [INFO] [stdout] | [INFO] [stdout] 171 | let (next, elem) = Ref::map_split(node_ref, |node| (&node.next, &node.elem)); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_next` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `List` is never constructed [INFO] [stdout] --> src/silly1.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | struct List { [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: multiple associated items are never used [INFO] [stdout] --> src/silly1.rs:7:8 [INFO] [stdout] | [INFO] [stdout] 6 | impl List { [INFO] [stdout] | --------------- associated items in this implementation [INFO] [stdout] 7 | fn new() -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 14 | pub fn push_left(&mut self, elem: T) { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 17 | pub fn push_right(&mut self, elem: T) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 20 | pub fn pop_left(&mut self) -> Option { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 23 | pub fn pop_right(&mut self) -> Option { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 26 | pub fn peek_left(&self) -> Option<&T> { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 29 | pub fn peek_right(&self) -> Option<&T> { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 32 | pub fn peek_left_mut(&mut self) -> Option<&mut T> { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 35 | pub fn peek_right_mut(&mut self) -> Option<&mut T> { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 39 | pub fn go_left(&mut self) -> bool { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 48 | pub fn go_right(&mut self) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/fourth.rs:77:23 [INFO] [stdout] | [INFO] [stdout] 77 | 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] 77 | 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:113:22 [INFO] [stdout] | [INFO] [stdout] 113 | 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] 113 | 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:119:26 [INFO] [stdout] | [INFO] [stdout] 119 | 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] 119 | 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:125:27 [INFO] [stdout] | [INFO] [stdout] 125 | 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] 125 | pub fn peek_front_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:162:17 [INFO] [stdout] | [INFO] [stdout] 162 | pub fn iter(&self) -> Iter { [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] 162 | pub fn iter(&self) -> Iter<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.11s [INFO] running `Command { std: "docker" "inspect" "72f4945288747a79688907ed913665aba98ed8eda47002e60b265d2420de2e21", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "72f4945288747a79688907ed913665aba98ed8eda47002e60b265d2420de2e21", kill_on_drop: false }` [INFO] [stdout] 72f4945288747a79688907ed913665aba98ed8eda47002e60b265d2420de2e21 [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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+028592fec99e54cc92def5a2a849c673b066dd93" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4e49a6cc62b4aa731cba4e9b917cbb687a5498a7a85c47d40f6d1630610121de [INFO] running `Command { std: "docker" "start" "-a" "4e49a6cc62b4aa731cba4e9b917cbb687a5498a7a85c47d40f6d1630610121de", kill_on_drop: false }` [INFO] [stdout] warning: unused import: `super::List` [INFO] [stdout] --> src/fifth.rs:139:9 [INFO] [stdout] | [INFO] [stdout] 139 | use super::List; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `next` [INFO] [stdout] --> src/fourth.rs:171:18 [INFO] [stdout] | [INFO] [stdout] 171 | let (next, elem) = Ref::map_split(node_ref, |node| (&node.next, &node.elem)); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_next` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `List` is never constructed [INFO] [stdout] --> src/silly1.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | struct List { [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: multiple associated items are never used [INFO] [stdout] --> src/silly1.rs:7:8 [INFO] [stdout] | [INFO] [stdout] 6 | impl List { [INFO] [stdout] | --------------- associated items in this implementation [INFO] [stdout] 7 | fn new() -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 14 | pub fn push_left(&mut self, elem: T) { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 17 | pub fn push_right(&mut self, elem: T) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 20 | pub fn pop_left(&mut self) -> Option { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 23 | pub fn pop_right(&mut self) -> Option { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 26 | pub fn peek_left(&self) -> Option<&T> { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 29 | pub fn peek_right(&self) -> Option<&T> { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 32 | pub fn peek_left_mut(&mut self) -> Option<&mut T> { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 35 | pub fn peek_right_mut(&mut self) -> Option<&mut T> { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 39 | pub fn go_left(&mut self) -> bool { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 48 | pub fn go_right(&mut self) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/fourth.rs:77:23 [INFO] [stdout] | [INFO] [stdout] 77 | 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] 77 | 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:113:22 [INFO] [stdout] | [INFO] [stdout] 113 | 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] 113 | 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:119:26 [INFO] [stdout] | [INFO] [stdout] 119 | 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] 119 | 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:125:27 [INFO] [stdout] | [INFO] [stdout] 125 | 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] 125 | pub fn peek_front_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:162:17 [INFO] [stdout] | [INFO] [stdout] 162 | pub fn iter(&self) -> Iter { [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] 162 | pub fn iter(&self) -> Iter<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling rust-lists v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `next` [INFO] [stdout] --> src/fourth.rs:171:18 [INFO] [stdout] | [INFO] [stdout] 171 | let (next, elem) = Ref::map_split(node_ref, |node| (&node.next, &node.elem)); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_next` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `peek_left_mut`, `peek_right_mut`, and `go_right` are never used [INFO] [stdout] --> src/silly1.rs:32:12 [INFO] [stdout] | [INFO] [stdout] 6 | impl List { [INFO] [stdout] | --------------- methods in this implementation [INFO] [stdout] ... [INFO] [stdout] 32 | pub fn peek_left_mut(&mut self) -> Option<&mut T> { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 35 | pub fn peek_right_mut(&mut self) -> Option<&mut T> { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 48 | pub fn go_right(&mut self) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [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/fourth.rs:77:23 [INFO] [stdout] | [INFO] [stdout] 77 | 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] 77 | 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:113:22 [INFO] [stdout] | [INFO] [stdout] 113 | 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] 113 | 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:119:26 [INFO] [stdout] | [INFO] [stdout] 119 | 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] 119 | 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:125:27 [INFO] [stdout] | [INFO] [stdout] 125 | 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] 125 | pub fn peek_front_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:162:17 [INFO] [stdout] | [INFO] [stdout] 162 | pub fn iter(&self) -> Iter { [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] 162 | pub fn iter(&self) -> Iter<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.27s [INFO] running `Command { std: "docker" "inspect" "4e49a6cc62b4aa731cba4e9b917cbb687a5498a7a85c47d40f6d1630610121de", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4e49a6cc62b4aa731cba4e9b917cbb687a5498a7a85c47d40f6d1630610121de", kill_on_drop: false }` [INFO] [stdout] 4e49a6cc62b4aa731cba4e9b917cbb687a5498a7a85c47d40f6d1630610121de [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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+028592fec99e54cc92def5a2a849c673b066dd93" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 011c0c1105c79aeff9389ec60d840a549720654bcedf15275c3e3d7618bd8921 [INFO] running `Command { std: "docker" "start" "-a" "011c0c1105c79aeff9389ec60d840a549720654bcedf15275c3e3d7618bd8921", kill_on_drop: false }` [INFO] [stderr] warning: unused import: `super::List` [INFO] [stderr] --> src/fifth.rs:139:9 [INFO] [stderr] | [INFO] [stderr] 139 | use super::List; [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `next` [INFO] [stderr] --> src/fourth.rs:171:18 [INFO] [stderr] | [INFO] [stderr] 171 | let (next, elem) = Ref::map_split(node_ref, |node| (&node.next, &node.elem)); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_next` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: struct `List` is never constructed [INFO] [stderr] --> src/silly1.rs:1:8 [INFO] [stderr] | [INFO] [stderr] 1 | struct List { [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: multiple associated items are never used [INFO] [stderr] --> src/silly1.rs:7:8 [INFO] [stderr] | [INFO] [stderr] 6 | impl List { [INFO] [stderr] | --------------- associated items in this implementation [INFO] [stderr] 7 | fn new() -> Self { [INFO] [stderr] | ^^^ [INFO] [stderr] ... [INFO] [stderr] 14 | pub fn push_left(&mut self, elem: T) { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] ... [INFO] [stderr] 17 | pub fn push_right(&mut self, elem: T) { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] ... [INFO] [stderr] 20 | pub fn pop_left(&mut self) -> Option { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] ... [INFO] [stderr] 23 | pub fn pop_right(&mut self) -> Option { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] ... [INFO] [stderr] 26 | pub fn peek_left(&self) -> Option<&T> { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] ... [INFO] [stderr] 29 | pub fn peek_right(&self) -> Option<&T> { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] ... [INFO] [stderr] 32 | pub fn peek_left_mut(&mut self) -> Option<&mut T> { [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] ... [INFO] [stderr] 35 | pub fn peek_right_mut(&mut self) -> Option<&mut T> { [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] ... [INFO] [stderr] 39 | pub fn go_left(&mut self) -> bool { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] ... [INFO] [stderr] 48 | pub fn go_right(&mut self) -> bool { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stderr] --> src/fourth.rs:77:23 [INFO] [stderr] | [INFO] [stderr] 77 | 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] 77 | 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:113:22 [INFO] [stderr] | [INFO] [stderr] 113 | 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] 113 | 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:119:26 [INFO] [stderr] | [INFO] [stderr] 119 | 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] 119 | 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:125:27 [INFO] [stderr] | [INFO] [stderr] 125 | 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] 125 | pub fn peek_front_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:162:17 [INFO] [stderr] | [INFO] [stderr] 162 | pub fn iter(&self) -> Iter { [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] 162 | pub fn iter(&self) -> Iter<'_, T> { [INFO] [stderr] | +++ [INFO] [stderr] [INFO] [stderr] warning: `rust-lists` (lib) generated 9 warnings (run `cargo fix --lib -p rust-lists` to apply 6 suggestions) [INFO] [stderr] warning: methods `peek_left_mut`, `peek_right_mut`, and `go_right` are never used [INFO] [stderr] --> src/silly1.rs:32:12 [INFO] [stderr] | [INFO] [stderr] 6 | impl List { [INFO] [stderr] | --------------- methods in this implementation [INFO] [stderr] ... [INFO] [stderr] 32 | pub fn peek_left_mut(&mut self) -> Option<&mut T> { [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] ... [INFO] [stderr] 35 | pub fn peek_right_mut(&mut self) -> Option<&mut T> { [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] ... [INFO] [stderr] 48 | pub fn go_right(&mut self) -> bool { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: `rust-lists` (lib test) generated 7 warnings (6 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/rust_lists-4c08f0dc88a6027f) [INFO] [stdout] [INFO] [stdout] running 19 tests [INFO] [stdout] test fifth::test::basics ... ok [INFO] [stdout] test fifth::test::into_iter ... ok [INFO] [stdout] test fifth::test::iter ... ok [INFO] [stdout] test fifth::test::miri_food ... ok [INFO] [stdout] test first::basics ... ok [INFO] [stdout] test fourth::test::into_iter ... ok [INFO] [stdout] test fourth::test::basics ... ok [INFO] [stdout] test fourth::test::peek ... ok [INFO] [stdout] test fifth::test::iter_mut ... ok [INFO] [stdout] test second::into_iter ... ok [INFO] [stdout] test second::iter ... ok [INFO] [stdout] test second::iter_mut ... ok [INFO] [stdout] test second::peek ... ok [INFO] [stdout] test silly2::test::cell ... ok [INFO] [stdout] test silly2::test::elegance ... ok [INFO] [stdout] test third::test::basics ... ok [INFO] [stdout] test silly1::test::walk_aboot ... ok [INFO] [stdout] test second::basics ... ok [INFO] [stdout] test third::test::iter ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 19 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s [INFO] [stdout] [INFO] [stderr] Doc-tests rust_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" "011c0c1105c79aeff9389ec60d840a549720654bcedf15275c3e3d7618bd8921", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "011c0c1105c79aeff9389ec60d840a549720654bcedf15275c3e3d7618bd8921", kill_on_drop: false }` [INFO] [stdout] 011c0c1105c79aeff9389ec60d840a549720654bcedf15275c3e3d7618bd8921