[INFO] cloning repository https://github.com/ravendyg/rust-playground [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ravendyg/rust-playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fravendyg%2Frust-playground", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fravendyg%2Frust-playground'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] f0fbaf1c751f3fbfd6b05d9779721bfa5fc7f25f [INFO] checking ravendyg/rust-playground against try#3d9fdbff4f377de96b3a51174e7a64086bee9a5c for pr-81477 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fravendyg%2Frust-playground" "/workspace/builds/worker-15/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-15/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/ravendyg/rust-playground on toolchain 3d9fdbff4f377de96b3a51174e7a64086bee9a5c [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/ravendyg/rust-playground [INFO] finished tweaking git repo https://github.com/ravendyg/rust-playground [INFO] tweaked toml for git repo https://github.com/ravendyg/rust-playground written to /workspace/builds/worker-15/source/Cargo.toml [INFO] crate git repo https://github.com/ravendyg/rust-playground already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 38ee5376258a35c67656aa64900b3978892588349d7530d63a739da1a79f690e [INFO] running `Command { std: "docker" "start" "-a" "38ee5376258a35c67656aa64900b3978892588349d7530d63a739da1a79f690e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "38ee5376258a35c67656aa64900b3978892588349d7530d63a739da1a79f690e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "38ee5376258a35c67656aa64900b3978892588349d7530d63a739da1a79f690e", kill_on_drop: false }` [INFO] [stdout] 38ee5376258a35c67656aa64900b3978892588349d7530d63a739da1a79f690e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 75fb90b1e2fbf6fecf31917af6de0b80aaf2132e3931daeb9ceef46303ef6e99 [INFO] running `Command { std: "docker" "start" "-a" "75fb90b1e2fbf6fecf31917af6de0b80aaf2132e3931daeb9ceef46303ef6e99", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Checking libc v0.2.18 [INFO] [stderr] Checking rand v0.3.15 [INFO] [stderr] Checking guessing v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition. [INFO] [stdout] --> src/main.rs:18:23 [INFO] [stdout] | [INFO] [stdout] 18 | fn is_larger(&self, &Self) -> bool; [INFO] [stdout] | ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Self` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(anonymous_parameters)]` on by default [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018! [INFO] [stdout] = note: for more information, see issue #41686 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition. [INFO] [stdout] --> src/main.rs:18:23 [INFO] [stdout] | [INFO] [stdout] 18 | fn is_larger(&self, &Self) -> bool; [INFO] [stdout] | ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Self` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(anonymous_parameters)]` on by default [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018! [INFO] [stdout] = note: for more information, see issue #41686 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/main.rs:60:7 [INFO] [stdout] | [INFO] [stdout] 60 | let x: Option = Option::Some(5); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `q` [INFO] [stdout] --> src/main.rs:62:7 [INFO] [stdout] | [INFO] [stdout] 62 | let q: Option = Option::Some(5f64); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_q` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/main.rs:71:7 [INFO] [stdout] | [INFO] [stdout] 71 | let b = 10; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `None` [INFO] [stdout] --> src/main.rs:49:3 [INFO] [stdout] | [INFO] [stdout] 49 | None [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum is never used: `Result` [INFO] [stdout] --> src/main.rs:53:6 [INFO] [stdout] | [INFO] [stdout] 53 | enum Result { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/main.rs:60:7 [INFO] [stdout] | [INFO] [stdout] 60 | let x: Option = Option::Some(5); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `q` [INFO] [stdout] --> src/main.rs:62:7 [INFO] [stdout] | [INFO] [stdout] 62 | let q: Option = Option::Some(5f64); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_q` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/main.rs:71:7 [INFO] [stdout] | [INFO] [stdout] 71 | let b = 10; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `None` [INFO] [stdout] --> src/main.rs:49:3 [INFO] [stdout] | [INFO] [stdout] 49 | None [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum is never used: `Result` [INFO] [stdout] --> src/main.rs:53:6 [INFO] [stdout] | [INFO] [stdout] 53 | enum Result { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.66s [INFO] running `Command { std: "docker" "inspect" "75fb90b1e2fbf6fecf31917af6de0b80aaf2132e3931daeb9ceef46303ef6e99", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "75fb90b1e2fbf6fecf31917af6de0b80aaf2132e3931daeb9ceef46303ef6e99", kill_on_drop: false }` [INFO] [stdout] 75fb90b1e2fbf6fecf31917af6de0b80aaf2132e3931daeb9ceef46303ef6e99