[INFO] cloning repository https://github.com/Cancain/rust_new_tutorial [INFO] running `"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"` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCancain%2Frust_new_tutorial'... [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] eef2526864c89f77392a7e1cf924fe946ddc5723 [INFO] testing Cancain/rust_new_tutorial against beta-2020-06-03 for beta-1.45-1 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCancain%2Frust_new_tutorial" "/workspace/builds/worker-3/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Cancain/rust_new_tutorial on toolchain beta-2020-06-03 [INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"` [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-3/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 `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 2018b2adebfb88bc32fdb6c925b5f78b3286262e4ada78feecc85356ebef14d5 [INFO] running `"docker" "start" "-a" "2018b2adebfb88bc32fdb6c925b5f78b3286262e4ada78feecc85356ebef14d5"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Compiling play_ground v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused variable: `a` [INFO] [stderr] --> src/main.rs:6:9 [INFO] [stderr] | [INFO] [stderr] 6 | let a = 1 + 20; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `s` [INFO] [stderr] --> src/main.rs:8:9 [INFO] [stderr] | [INFO] [stderr] 8 | let s = 30 - 20; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `m` [INFO] [stderr] --> src/main.rs:9:9 [INFO] [stderr] | [INFO] [stderr] 9 | let m = 5 * 10; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_m` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `d` [INFO] [stderr] --> src/main.rs:10:9 [INFO] [stderr] | [INFO] [stderr] 10 | let d = 4/6; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_d` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `r` [INFO] [stderr] --> src/main.rs:11:9 [INFO] [stderr] | [INFO] [stderr] 11 | let r = 49 % 2; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_r` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `c` [INFO] [stderr] --> src/main.rs:14:9 [INFO] [stderr] | [INFO] [stderr] 14 | let c = 'c'; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `c` [INFO] [stderr] --> src/main.rs:15:9 [INFO] [stderr] | [INFO] [stderr] 15 | let c: char = 'z'; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `z` [INFO] [stderr] --> src/main.rs:19:10 [INFO] [stderr] | [INFO] [stderr] 19 | let (z, y, x) = t; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_z` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> src/main.rs:19:13 [INFO] [stderr] | [INFO] [stderr] 19 | let (z, y, x) = t; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:19:16 [INFO] [stderr] | [INFO] [stderr] 19 | let (z, y, x) = t; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:20:17 [INFO] [stderr] | [INFO] [stderr] 20 | let (_, _ , x) = t; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `ab1` [INFO] [stderr] --> src/main.rs:24:9 [INFO] [stderr] | [INFO] [stderr] 24 | let ab1 = ab[0]; [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_ab1` [INFO] [stderr] [INFO] [stderr] warning: 12 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.64s [INFO] running `"docker" "inspect" "2018b2adebfb88bc32fdb6c925b5f78b3286262e4ada78feecc85356ebef14d5"` [INFO] running `"docker" "rm" "-f" "2018b2adebfb88bc32fdb6c925b5f78b3286262e4ada78feecc85356ebef14d5"` [INFO] [stdout] 2018b2adebfb88bc32fdb6c925b5f78b3286262e4ada78feecc85356ebef14d5 [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen" "--no-run"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 6950dc924518f93f3875f360b47f2bec71f2971a1d6531b6193c01b790951e73 [INFO] running `"docker" "start" "-a" "6950dc924518f93f3875f360b47f2bec71f2971a1d6531b6193c01b790951e73"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Compiling play_ground v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused variable: `a` [INFO] [stderr] --> src/main.rs:6:9 [INFO] [stderr] | [INFO] [stderr] 6 | let a = 1 + 20; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `s` [INFO] [stderr] --> src/main.rs:8:9 [INFO] [stderr] | [INFO] [stderr] 8 | let s = 30 - 20; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `m` [INFO] [stderr] --> src/main.rs:9:9 [INFO] [stderr] | [INFO] [stderr] 9 | let m = 5 * 10; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_m` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `d` [INFO] [stderr] --> src/main.rs:10:9 [INFO] [stderr] | [INFO] [stderr] 10 | let d = 4/6; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_d` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `r` [INFO] [stderr] --> src/main.rs:11:9 [INFO] [stderr] | [INFO] [stderr] 11 | let r = 49 % 2; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_r` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `c` [INFO] [stderr] --> src/main.rs:14:9 [INFO] [stderr] | [INFO] [stderr] 14 | let c = 'c'; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `c` [INFO] [stderr] --> src/main.rs:15:9 [INFO] [stderr] | [INFO] [stderr] 15 | let c: char = 'z'; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `z` [INFO] [stderr] --> src/main.rs:19:10 [INFO] [stderr] | [INFO] [stderr] 19 | let (z, y, x) = t; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_z` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> src/main.rs:19:13 [INFO] [stderr] | [INFO] [stderr] 19 | let (z, y, x) = t; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:19:16 [INFO] [stderr] | [INFO] [stderr] 19 | let (z, y, x) = t; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:20:17 [INFO] [stderr] | [INFO] [stderr] 20 | let (_, _ , x) = t; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `ab1` [INFO] [stderr] --> src/main.rs:24:9 [INFO] [stderr] | [INFO] [stderr] 24 | let ab1 = ab[0]; [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_ab1` [INFO] [stderr] [INFO] [stderr] warning: 12 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.66s [INFO] running `"docker" "inspect" "6950dc924518f93f3875f360b47f2bec71f2971a1d6531b6193c01b790951e73"` [INFO] running `"docker" "rm" "-f" "6950dc924518f93f3875f360b47f2bec71f2971a1d6531b6193c01b790951e73"` [INFO] [stdout] 6950dc924518f93f3875f360b47f2bec71f2971a1d6531b6193c01b790951e73 [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 64f5ea282104026b17a6c2d4d891b38d35ca3ee9a092ddedb478e7e0c07af104 [INFO] running `"docker" "start" "-a" "64f5ea282104026b17a6c2d4d891b38d35ca3ee9a092ddedb478e7e0c07af104"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] warning: unused variable: `a` [INFO] [stderr] --> src/main.rs:6:9 [INFO] [stderr] | [INFO] [stderr] 6 | let a = 1 + 20; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `s` [INFO] [stderr] --> src/main.rs:8:9 [INFO] [stderr] | [INFO] [stderr] 8 | let s = 30 - 20; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `m` [INFO] [stderr] --> src/main.rs:9:9 [INFO] [stderr] | [INFO] [stderr] 9 | let m = 5 * 10; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_m` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `d` [INFO] [stderr] --> src/main.rs:10:9 [INFO] [stderr] | [INFO] [stderr] 10 | let d = 4/6; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_d` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `r` [INFO] [stderr] --> src/main.rs:11:9 [INFO] [stderr] | [INFO] [stderr] 11 | let r = 49 % 2; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_r` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `c` [INFO] [stderr] --> src/main.rs:14:9 [INFO] [stderr] | [INFO] [stderr] 14 | let c = 'c'; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `c` [INFO] [stderr] --> src/main.rs:15:9 [INFO] [stderr] | [INFO] [stderr] 15 | let c: char = 'z'; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `z` [INFO] [stderr] --> src/main.rs:19:10 [INFO] [stderr] | [INFO] [stderr] 19 | let (z, y, x) = t; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_z` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> src/main.rs:19:13 [INFO] [stderr] | [INFO] [stderr] 19 | let (z, y, x) = t; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:19:16 [INFO] [stderr] | [INFO] [stderr] 19 | let (z, y, x) = t; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:20:17 [INFO] [stderr] | [INFO] [stderr] 20 | let (_, _ , x) = t; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `ab1` [INFO] [stderr] --> src/main.rs:24:9 [INFO] [stderr] | [INFO] [stderr] 24 | let ab1 = ab[0]; [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_ab1` [INFO] [stderr] [INFO] [stderr] warning: 12 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.03s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/play_ground-99dcd45ca7231cd0 [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] running `"docker" "inspect" "64f5ea282104026b17a6c2d4d891b38d35ca3ee9a092ddedb478e7e0c07af104"` [INFO] running `"docker" "rm" "-f" "64f5ea282104026b17a6c2d4d891b38d35ca3ee9a092ddedb478e7e0c07af104"` [INFO] [stdout] 64f5ea282104026b17a6c2d4d891b38d35ca3ee9a092ddedb478e7e0c07af104