[INFO] cloning repository https://github.com/Mahtiah/maze_generator [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Mahtiah/maze_generator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMahtiah%2Fmaze_generator", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMahtiah%2Fmaze_generator'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 06297a5537a3fba87f8feaa56ef42798eb932590 [INFO] checking Mahtiah/maze_generator against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMahtiah%2Fmaze_generator" "/workspace/builds/worker-106/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-106/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Mahtiah/maze_generator on toolchain 39e1293fce4b650061e85dda88aa428f726a8444 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/Mahtiah/maze_generator [INFO] finished tweaking git repo https://github.com/Mahtiah/maze_generator [INFO] tweaked toml for git repo https://github.com/Mahtiah/maze_generator written to /workspace/builds/worker-106/source/Cargo.toml [INFO] crate git repo https://github.com/Mahtiah/maze_generator already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "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-106/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/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" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] c788ad43b55e8bd70e58cd778456f4668d27ef37a13ab3101e1834197feddfc0 [INFO] running `Command { std: "docker" "start" "-a" "c788ad43b55e8bd70e58cd778456f4668d27ef37a13ab3101e1834197feddfc0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c788ad43b55e8bd70e58cd778456f4668d27ef37a13ab3101e1834197feddfc0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c788ad43b55e8bd70e58cd778456f4668d27ef37a13ab3101e1834197feddfc0", kill_on_drop: false }` [INFO] [stdout] c788ad43b55e8bd70e58cd778456f4668d27ef37a13ab3101e1834197feddfc0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/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" "+39e1293fce4b650061e85dda88aa428f726a8444" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 5e22c302a31f2a0a4739ae6eba68214ffa5abc74e561614dfbeaa9bce8085fab [INFO] running `Command { std: "docker" "start" "-a" "5e22c302a31f2a0a4739ae6eba68214ffa5abc74e561614dfbeaa9bce8085fab", kill_on_drop: false }` [INFO] [stderr] Checking libc v0.2.15 [INFO] [stderr] Checking rand v0.3.14 [INFO] [stderr] Checking maze_generator v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/main.rs:10:9 [INFO] [stdout] | [INFO] [stdout] 10 | for x in 0..maze.width() [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: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021. [INFO] [stdout] --> src/maze_generator/maze.rs:59:46 [INFO] [stdout] | [INFO] [stdout] 59 | let directions : Vec<_> = directions.into_iter() [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(array_into_iter)]` on by default [INFO] [stdout] = warning: this changes meaning in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity [INFO] [stdout] | [INFO] [stdout] 59 | let directions : Vec<_> = directions.iter() [INFO] [stdout] | ~~~~ [INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value [INFO] [stdout] | [INFO] [stdout] 59 | let directions : Vec<_> = IntoIterator::into_iter(directions) [INFO] [stdout] | ++++++++++++++++++++++++ ~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/main.rs:10:9 [INFO] [stdout] | [INFO] [stdout] 10 | for x in 0..maze.width() [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: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021. [INFO] [stdout] --> src/maze_generator/maze.rs:59:46 [INFO] [stdout] | [INFO] [stdout] 59 | let directions : Vec<_> = directions.into_iter() [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(array_into_iter)]` on by default [INFO] [stdout] = warning: this changes meaning in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity [INFO] [stdout] | [INFO] [stdout] 59 | let directions : Vec<_> = directions.iter() [INFO] [stdout] | ~~~~ [INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value [INFO] [stdout] | [INFO] [stdout] 59 | let directions : Vec<_> = IntoIterator::into_iter(directions) [INFO] [stdout] | ++++++++++++++++++++++++ ~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2.01s [INFO] running `Command { std: "docker" "inspect" "5e22c302a31f2a0a4739ae6eba68214ffa5abc74e561614dfbeaa9bce8085fab", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5e22c302a31f2a0a4739ae6eba68214ffa5abc74e561614dfbeaa9bce8085fab", kill_on_drop: false }` [INFO] [stdout] 5e22c302a31f2a0a4739ae6eba68214ffa5abc74e561614dfbeaa9bce8085fab