[INFO] cloning repository https://github.com/Sharko-21/list [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Sharko-21/list" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSharko-21%2Flist", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSharko-21%2Flist'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] ef16058b8f049bc407e91ce742705367a0791677 [INFO] checking Sharko-21/list against beta for pr-78714 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSharko-21%2Flist" "/workspace/builds/worker-3/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Sharko-21/list on toolchain beta [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/Sharko-21/list [INFO] finished tweaking git repo https://github.com/Sharko-21/list [INFO] tweaked toml for git repo https://github.com/Sharko-21/list written to /workspace/builds/worker-3/source/Cargo.toml [INFO] crate git repo https://github.com/Sharko-21/list already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 4a6fb9df385201d1804ab80636e19ba1b1f53fe6e4724bd713ed5ab9e8e36552 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "4a6fb9df385201d1804ab80636e19ba1b1f53fe6e4724bd713ed5ab9e8e36552", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "4a6fb9df385201d1804ab80636e19ba1b1f53fe6e4724bd713ed5ab9e8e36552", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4a6fb9df385201d1804ab80636e19ba1b1f53fe6e4724bd713ed5ab9e8e36552", kill_on_drop: false }` [INFO] [stdout] 4a6fb9df385201d1804ab80636e19ba1b1f53fe6e4724bd713ed5ab9e8e36552 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] fbadb7e05d0c4c97add0f4d22840719b4062c10eec597e04ed14f7b03e33f727 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "fbadb7e05d0c4c97add0f4d22840719b4062c10eec597e04ed14f7b03e33f727", kill_on_drop: false }` [INFO] [stderr] Checking skip_list v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `Ref` [INFO] [stdout] --> src/main.rs:3:26 [INFO] [stdout] | [INFO] [stdout] 3 | use std::cell::{RefCell, Ref}; [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Error` [INFO] [stdout] --> src/main.rs:5:27 [INFO] [stdout] | [INFO] [stdout] 5 | use std::fmt::{Formatter, Error}; [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Ref` [INFO] [stdout] --> src/main.rs:3:26 [INFO] [stdout] | [INFO] [stdout] 3 | use std::cell::{RefCell, Ref}; [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Error` [INFO] [stdout] --> src/main.rs:5:27 [INFO] [stdout] | [INFO] [stdout] 5 | use std::fmt::{Formatter, Error}; [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable pattern [INFO] [stdout] --> src/main.rs:62:21 [INFO] [stdout] | [INFO] [stdout] 62 | _ => {} [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_patterns)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable pattern [INFO] [stdout] --> src/main.rs:69:13 [INFO] [stdout] | [INFO] [stdout] 69 | _ => {} [INFO] [stdout] | ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable pattern [INFO] [stdout] --> src/main.rs:83:13 [INFO] [stdout] | [INFO] [stdout] 83 | _ => {} [INFO] [stdout] | ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable pattern [INFO] [stdout] --> src/main.rs:150:25 [INFO] [stdout] | [INFO] [stdout] 150 | _ => { [INFO] [stdout] | ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable pattern [INFO] [stdout] --> src/main.rs:163:13 [INFO] [stdout] | [INFO] [stdout] 163 | _ => {} [INFO] [stdout] | ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `iter` [INFO] [stdout] --> src/main.rs:88:13 [INFO] [stdout] | [INFO] [stdout] 88 | let mut iter = &self.next; [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_iter` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `done` [INFO] [stdout] --> src/main.rs:89:13 [INFO] [stdout] | [INFO] [stdout] 89 | let mut done = false; [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_done` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `next_outer` is never read [INFO] [stdout] --> src/main.rs:109:13 [INFO] [stdout] | [INFO] [stdout] 109 | let mut next_outer = None; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `result` is never read [INFO] [stdout] --> src/main.rs:110:13 [INFO] [stdout] | [INFO] [stdout] 110 | let mut result = None; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:48:35 [INFO] [stdout] | [INFO] [stdout] 48 | fn insert_to_begin(&mut self, mut node: Rc>) { [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:73:33 [INFO] [stdout] | [INFO] [stdout] 73 | fn insert_to_end(&mut self, mut node: Rc>) { [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:88:13 [INFO] [stdout] | [INFO] [stdout] 88 | let mut iter = &self.next; [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:89:13 [INFO] [stdout] | [INFO] [stdout] 89 | let mut done = false; [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable pattern [INFO] [stdout] --> src/main.rs:62:21 [INFO] [stdout] | [INFO] [stdout] 62 | _ => {} [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_patterns)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable pattern [INFO] [stdout] --> src/main.rs:69:13 [INFO] [stdout] | [INFO] [stdout] 69 | _ => {} [INFO] [stdout] | ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable pattern [INFO] [stdout] --> src/main.rs:83:13 [INFO] [stdout] | [INFO] [stdout] 83 | _ => {} [INFO] [stdout] | ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable pattern [INFO] [stdout] --> src/main.rs:150:25 [INFO] [stdout] | [INFO] [stdout] 150 | _ => { [INFO] [stdout] | ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable pattern [INFO] [stdout] --> src/main.rs:163:13 [INFO] [stdout] | [INFO] [stdout] 163 | _ => {} [INFO] [stdout] | ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `iter` [INFO] [stdout] --> src/main.rs:88:13 [INFO] [stdout] | [INFO] [stdout] 88 | let mut iter = &self.next; [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_iter` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `done` [INFO] [stdout] --> src/main.rs:89:13 [INFO] [stdout] | [INFO] [stdout] 89 | let mut done = false; [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_done` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `next_outer` is never read [INFO] [stdout] --> src/main.rs:109:13 [INFO] [stdout] | [INFO] [stdout] 109 | let mut next_outer = None; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `result` is never read [INFO] [stdout] --> src/main.rs:110:13 [INFO] [stdout] | [INFO] [stdout] 110 | let mut result = None; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:48:35 [INFO] [stdout] | [INFO] [stdout] 48 | fn insert_to_begin(&mut self, mut node: Rc>) { [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:73:33 [INFO] [stdout] | [INFO] [stdout] 73 | fn insert_to_end(&mut self, mut node: Rc>) { [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:88:13 [INFO] [stdout] | [INFO] [stdout] 88 | let mut iter = &self.next; [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:89:13 [INFO] [stdout] | [INFO] [stdout] 89 | let mut done = false; [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 15 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 15 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.79s [INFO] running `Command { std: "docker" "inspect" "fbadb7e05d0c4c97add0f4d22840719b4062c10eec597e04ed14f7b03e33f727", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fbadb7e05d0c4c97add0f4d22840719b4062c10eec597e04ed14f7b03e33f727", kill_on_drop: false }` [INFO] [stdout] fbadb7e05d0c4c97add0f4d22840719b4062c10eec597e04ed14f7b03e33f727