[INFO] cloning repository https://github.com/buhe/study_rust_smart_pointer [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/buhe/study_rust_smart_pointer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbuhe%2Fstudy_rust_smart_pointer", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbuhe%2Fstudy_rust_smart_pointer'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 1462333bc214c1787126c04c3e64e770046e9a2c [INFO] checking buhe/study_rust_smart_pointer against master#f8f6997469237299c1d60814c7b9828602a1f8e4 for pr-143808 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbuhe%2Fstudy_rust_smart_pointer" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/buhe/study_rust_smart_pointer [INFO] finished tweaking git repo https://github.com/buhe/study_rust_smart_pointer [INFO] tweaked toml for git repo https://github.com/buhe/study_rust_smart_pointer written to /workspace/builds/worker-7-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/buhe/study_rust_smart_pointer on toolchain f8f6997469237299c1d60814c7b9828602a1f8e4 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f8f6997469237299c1d60814c7b9828602a1f8e4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/buhe/study_rust_smart_pointer 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" "+f8f6997469237299c1d60814c7b9828602a1f8e4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+f8f6997469237299c1d60814c7b9828602a1f8e4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 8248aa6c061eca6ace416c8b61f16e1912ca22a85b2d244018900947700af6b8 [INFO] running `Command { std: "docker" "start" "-a" "8248aa6c061eca6ace416c8b61f16e1912ca22a85b2d244018900947700af6b8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "8248aa6c061eca6ace416c8b61f16e1912ca22a85b2d244018900947700af6b8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8248aa6c061eca6ace416c8b61f16e1912ca22a85b2d244018900947700af6b8", kill_on_drop: false }` [INFO] [stdout] 8248aa6c061eca6ace416c8b61f16e1912ca22a85b2d244018900947700af6b8 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+f8f6997469237299c1d60814c7b9828602a1f8e4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] f863a4b87c3766c8eecc8f02e896a9c445c7c711b51fec42eff9c2684890b2b3 [INFO] running `Command { std: "docker" "start" "-a" "f863a4b87c3766c8eecc8f02e896a9c445c7c711b51fec42eff9c2684890b2b3", kill_on_drop: false }` [INFO] [stderr] Checking study_rust_smart_pointer v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: trait `Messenger` is never used [INFO] [stdout] --> src/smart_pointer.rs:1:11 [INFO] [stdout] | [INFO] [stdout] 1 | pub trait Messenger { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `LimitTracker` is never constructed [INFO] [stdout] --> src/smart_pointer.rs:5:12 [INFO] [stdout] | [INFO] [stdout] 5 | pub struct LimitTracker<'a, T: Messenger> { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new` and `set_value` are never used [INFO] [stdout] --> src/smart_pointer.rs:15:12 [INFO] [stdout] | [INFO] [stdout] 11 | / impl<'a, T> LimitTracker<'a, T> [INFO] [stdout] 12 | | where [INFO] [stdout] 13 | | T: Messenger, [INFO] [stdout] | |_________________- associated items in this implementation [INFO] [stdout] 14 | { [INFO] [stdout] 15 | pub fn new(messenger: &T, max: usize) -> LimitTracker { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 23 | pub fn set_value(&mut self, value: usize) { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/smart_pointer.rs:15:27 [INFO] [stdout] | [INFO] [stdout] 15 | pub fn new(messenger: &T, max: usize) -> LimitTracker { [INFO] [stdout] | ^^ --------------- the lifetime gets resolved as `'_` [INFO] [stdout] | | [INFO] [stdout] | this lifetime flows to the output [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths [INFO] [stdout] | [INFO] [stdout] 15 | pub fn new(messenger: &T, max: usize) -> LimitTracker<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/smart_pointer.rs:15:27 [INFO] [stdout] | [INFO] [stdout] 15 | pub fn new(messenger: &T, max: usize) -> LimitTracker { [INFO] [stdout] | ^^ --------------- the lifetime gets resolved as `'_` [INFO] [stdout] | | [INFO] [stdout] | this lifetime flows to the output [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths [INFO] [stdout] | [INFO] [stdout] 15 | pub fn new(messenger: &T, max: usize) -> LimitTracker<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s [INFO] running `Command { std: "docker" "inspect" "f863a4b87c3766c8eecc8f02e896a9c445c7c711b51fec42eff9c2684890b2b3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f863a4b87c3766c8eecc8f02e896a9c445c7c711b51fec42eff9c2684890b2b3", kill_on_drop: false }` [INFO] [stdout] f863a4b87c3766c8eecc8f02e896a9c445c7c711b51fec42eff9c2684890b2b3