[INFO] cloning repository https://github.com/Cancain/rust_new_tutorial [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Cancain/rust_new_tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCancain%2Frust_new_tutorial", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCancain%2Frust_new_tutorial'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] eef2526864c89f77392a7e1cf924fe946ddc5723 [INFO] checking Cancain/rust_new_tutorial against beta for pr-78714 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCancain%2Frust_new_tutorial" "/workspace/builds/worker-1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Cancain/rust_new_tutorial 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/Cancain/rust_new_tutorial [INFO] finished tweaking git repo https://github.com/Cancain/rust_new_tutorial [INFO] tweaked toml for git repo https://github.com/Cancain/rust_new_tutorial written to /workspace/builds/worker-1/source/Cargo.toml [INFO] crate git repo https://github.com/Cancain/rust_new_tutorial 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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 6abf7f8ea435b1c2a13fc93bf35d4b54f74ba6791d341b7d3eda22504da68877 [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" "6abf7f8ea435b1c2a13fc93bf35d4b54f74ba6791d341b7d3eda22504da68877", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "6abf7f8ea435b1c2a13fc93bf35d4b54f74ba6791d341b7d3eda22504da68877", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6abf7f8ea435b1c2a13fc93bf35d4b54f74ba6791d341b7d3eda22504da68877", kill_on_drop: false }` [INFO] [stdout] 6abf7f8ea435b1c2a13fc93bf35d4b54f74ba6791d341b7d3eda22504da68877 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 6c9f1828c3cb2b43a53b33f32da5826b7e6c0bc80bc518bf2bb410fbf7040e08 [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" "6c9f1828c3cb2b43a53b33f32da5826b7e6c0bc80bc518bf2bb410fbf7040e08", kill_on_drop: false }` [INFO] [stderr] Checking play_ground v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/main.rs:6:9 [INFO] [stdout] | [INFO] [stdout] 6 | let a = 1 + 20; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/main.rs:8:9 [INFO] [stdout] | [INFO] [stdout] 8 | let s = 30 - 20; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `m` [INFO] [stdout] --> src/main.rs:9:9 [INFO] [stdout] | [INFO] [stdout] 9 | let m = 5 * 10; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_m` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `d` [INFO] [stdout] --> src/main.rs:10:9 [INFO] [stdout] | [INFO] [stdout] 10 | let d = 4/6; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_d` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `r` [INFO] [stdout] --> src/main.rs:11:9 [INFO] [stdout] | [INFO] [stdout] 11 | let r = 49 % 2; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_r` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> src/main.rs:14:9 [INFO] [stdout] | [INFO] [stdout] 14 | let c = 'c'; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> src/main.rs:15:9 [INFO] [stdout] | [INFO] [stdout] 15 | let c: char = 'z'; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `z` [INFO] [stdout] --> src/main.rs:19:10 [INFO] [stdout] | [INFO] [stdout] 19 | let (z, y, x) = t; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_z` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> src/main.rs:19:13 [INFO] [stdout] | [INFO] [stdout] 19 | let (z, y, x) = t; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/main.rs:19:16 [INFO] [stdout] | [INFO] [stdout] 19 | let (z, y, x) = t; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/main.rs:20:17 [INFO] [stdout] | [INFO] [stdout] 20 | let (_, _ , x) = t; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ab1` [INFO] [stdout] --> src/main.rs:24:9 [INFO] [stdout] | [INFO] [stdout] 24 | let ab1 = ab[0]; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_ab1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 12 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/main.rs:6:9 [INFO] [stdout] | [INFO] [stdout] 6 | let a = 1 + 20; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/main.rs:8:9 [INFO] [stdout] | [INFO] [stdout] 8 | let s = 30 - 20; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `m` [INFO] [stdout] --> src/main.rs:9:9 [INFO] [stdout] | [INFO] [stdout] 9 | let m = 5 * 10; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_m` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `d` [INFO] [stdout] --> src/main.rs:10:9 [INFO] [stdout] | [INFO] [stdout] 10 | let d = 4/6; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_d` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `r` [INFO] [stdout] --> src/main.rs:11:9 [INFO] [stdout] | [INFO] [stdout] 11 | let r = 49 % 2; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_r` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> src/main.rs:14:9 [INFO] [stdout] | [INFO] [stdout] 14 | let c = 'c'; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> src/main.rs:15:9 [INFO] [stdout] | [INFO] [stdout] 15 | let c: char = 'z'; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `z` [INFO] [stdout] --> src/main.rs:19:10 [INFO] [stdout] | [INFO] [stdout] 19 | let (z, y, x) = t; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_z` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> src/main.rs:19:13 [INFO] [stdout] | [INFO] [stdout] 19 | let (z, y, x) = t; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/main.rs:19:16 [INFO] [stdout] | [INFO] [stdout] 19 | let (z, y, x) = t; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/main.rs:20:17 [INFO] [stdout] | [INFO] [stdout] 20 | let (_, _ , x) = t; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ab1` [INFO] [stdout] --> src/main.rs:24:9 [INFO] [stdout] | [INFO] [stdout] 24 | let ab1 = ab[0]; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_ab1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 12 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.46s [INFO] running `Command { std: "docker" "inspect" "6c9f1828c3cb2b43a53b33f32da5826b7e6c0bc80bc518bf2bb410fbf7040e08", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6c9f1828c3cb2b43a53b33f32da5826b7e6c0bc80bc518bf2bb410fbf7040e08", kill_on_drop: false }` [INFO] [stdout] 6c9f1828c3cb2b43a53b33f32da5826b7e6c0bc80bc518bf2bb410fbf7040e08