[INFO] cloning repository https://github.com/RyoAsano/tree [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/RyoAsano/tree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRyoAsano%2Ftree", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRyoAsano%2Ftree'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 72850113841326d40a8afd99efbd3845ee7a990c [INFO] checking RyoAsano/tree/72850113841326d40a8afd99efbd3845ee7a990c against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRyoAsano%2Ftree" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/RyoAsano/tree on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/RyoAsano/tree [INFO] finished tweaking git repo https://github.com/RyoAsano/tree [INFO] tweaked toml for git repo https://github.com/RyoAsano/tree written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/RyoAsano/tree 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] ab8be71d5411d3b582526a7a51d93abe15f976e59a4c02a09e7bf67ea71cef7f [INFO] running `Command { std: "docker" "start" "-a" "ab8be71d5411d3b582526a7a51d93abe15f976e59a4c02a09e7bf67ea71cef7f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ab8be71d5411d3b582526a7a51d93abe15f976e59a4c02a09e7bf67ea71cef7f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ab8be71d5411d3b582526a7a51d93abe15f976e59a4c02a09e7bf67ea71cef7f", kill_on_drop: false }` [INFO] [stdout] ab8be71d5411d3b582526a7a51d93abe15f976e59a4c02a09e7bf67ea71cef7f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ec3452be9175f811b383ec5a331d55c46425e446e8fa32ef0d10094f1968f7c3 [INFO] running `Command { std: "docker" "start" "-a" "ec3452be9175f811b383ec5a331d55c46425e446e8fa32ef0d10094f1968f7c3", kill_on_drop: false }` [INFO] [stderr] Checking tree v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/trees/btree/trunk.rs:14:37 [INFO] [stdout] | [INFO] [stdout] 14 | pub(super) fn insert(&mut self, mut key: K, value: T) -> Option { [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: unused variable: `upper` [INFO] [stdout] --> src/trees/btree/trunk.rs:100:21 [INFO] [stdout] | [INFO] [stdout] 100 | let upper = if self.max_size() < lvs.len() { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_upper` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `value` is never read [INFO] [stdout] --> src/trees/bintree/trunk.rs:6:16 [INFO] [stdout] | [INFO] [stdout] 4 | pub(super) struct Trunk { [INFO] [stdout] | ----- field in this struct [INFO] [stdout] 5 | pub(super) key: K, [INFO] [stdout] 6 | pub(super) value: T, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Trunk` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `value` is never read [INFO] [stdout] --> src/lists/linked.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 4 | pub struct Linked { [INFO] [stdout] | ------ field in this struct [INFO] [stdout] 5 | value: T, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Linked` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/trees/btree/trunk.rs:14:37 [INFO] [stdout] | [INFO] [stdout] 14 | pub(super) fn insert(&mut self, mut key: K, value: T) -> Option { [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: unused variable: `upper` [INFO] [stdout] --> src/trees/btree/trunk.rs:100:21 [INFO] [stdout] | [INFO] [stdout] 100 | let upper = if self.max_size() < lvs.len() { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_upper` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `value` is never read [INFO] [stdout] --> src/trees/bintree/trunk.rs:6:16 [INFO] [stdout] | [INFO] [stdout] 4 | pub(super) struct Trunk { [INFO] [stdout] | ----- field in this struct [INFO] [stdout] 5 | pub(super) key: K, [INFO] [stdout] 6 | pub(super) value: T, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Trunk` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `value` is never read [INFO] [stdout] --> src/lists/linked.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 4 | pub struct Linked { [INFO] [stdout] | ------ field in this struct [INFO] [stdout] 5 | value: T, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Linked` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.91s [INFO] running `Command { std: "docker" "inspect" "ec3452be9175f811b383ec5a331d55c46425e446e8fa32ef0d10094f1968f7c3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ec3452be9175f811b383ec5a331d55c46425e446e8fa32ef0d10094f1968f7c3", kill_on_drop: false }` [INFO] [stdout] ec3452be9175f811b383ec5a331d55c46425e446e8fa32ef0d10094f1968f7c3