[INFO] cloning repository https://github.com/zamfonato/rust_exercises [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zamfonato/rust_exercises" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzamfonato%2Frust_exercises", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzamfonato%2Frust_exercises'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 7220d67648c56ef39d692bea447083efb2917092 [INFO] testing zamfonato/rust_exercises against beta-2021-09-08 for beta-1.56-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzamfonato%2Frust_exercises" "/workspace/builds/worker-6/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/zamfonato/rust_exercises on toolchain beta-2021-09-08 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/zamfonato/rust_exercises [INFO] finished tweaking git repo https://github.com/zamfonato/rust_exercises [INFO] tweaked toml for git repo https://github.com/zamfonato/rust_exercises written to /workspace/builds/worker-6/source/Cargo.toml [INFO] crate git repo https://github.com/zamfonato/rust_exercises already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 398ab47311cf61415de2dc4eb0f28b03ab73773c60946b63927bd64fcb89c55c [INFO] running `Command { std: "docker" "start" "-a" "398ab47311cf61415de2dc4eb0f28b03ab73773c60946b63927bd64fcb89c55c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "398ab47311cf61415de2dc4eb0f28b03ab73773c60946b63927bd64fcb89c55c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "398ab47311cf61415de2dc4eb0f28b03ab73773c60946b63927bd64fcb89c55c", kill_on_drop: false }` [INFO] [stdout] 398ab47311cf61415de2dc4eb0f28b03ab73773c60946b63927bd64fcb89c55c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 739c1c29e1a4058adf1c84f8dfc8fbbd4bf02f4e13ff7b3ac4ac65984c730923 [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" "739c1c29e1a4058adf1c84f8dfc8fbbd4bf02f4e13ff7b3ac4ac65984c730923", kill_on_drop: false }` [INFO] [stderr] Compiling exercises v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/vars.rs:29:9 [INFO] [stdout] | [INFO] [stdout] 29 | let x: i32 = 1; [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] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.37s [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "739c1c29e1a4058adf1c84f8dfc8fbbd4bf02f4e13ff7b3ac4ac65984c730923", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "739c1c29e1a4058adf1c84f8dfc8fbbd4bf02f4e13ff7b3ac4ac65984c730923", kill_on_drop: false }` [INFO] [stdout] 739c1c29e1a4058adf1c84f8dfc8fbbd4bf02f4e13ff7b3ac4ac65984c730923 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 7870b7cbadc79ba2419ecfd80e16292d7d0825a6057c2ea1e47182782663e789 [INFO] running `Command { std: "docker" "start" "-a" "7870b7cbadc79ba2419ecfd80e16292d7d0825a6057c2ea1e47182782663e789", kill_on_drop: false }` [INFO] [stderr] Compiling exercises v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/vars.rs:29:9 [INFO] [stdout] | [INFO] [stdout] 29 | let x: i32 = 1; [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: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.74s [INFO] running `Command { std: "docker" "inspect" "7870b7cbadc79ba2419ecfd80e16292d7d0825a6057c2ea1e47182782663e789", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7870b7cbadc79ba2419ecfd80e16292d7d0825a6057c2ea1e47182782663e789", kill_on_drop: false }` [INFO] [stdout] 7870b7cbadc79ba2419ecfd80e16292d7d0825a6057c2ea1e47182782663e789 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 56b824e814b38f66c4eb0900cabcd2347232ce1dd2a6fedcbe5d1f557000bded [INFO] running `Command { std: "docker" "start" "-a" "56b824e814b38f66c4eb0900cabcd2347232ce1dd2a6fedcbe5d1f557000bded", kill_on_drop: false }` [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/vars.rs:29:9 [INFO] [stderr] | [INFO] [stderr] 29 | let x: i32 = 1; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: `exercises` (bin "exercises" test) generated 1 warning [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.01s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/exercises-cfebb873c30c5702) [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; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "56b824e814b38f66c4eb0900cabcd2347232ce1dd2a6fedcbe5d1f557000bded", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "56b824e814b38f66c4eb0900cabcd2347232ce1dd2a6fedcbe5d1f557000bded", kill_on_drop: false }` [INFO] [stdout] 56b824e814b38f66c4eb0900cabcd2347232ce1dd2a6fedcbe5d1f557000bded