[INFO] cloning repository https://github.com/SebastiaanYN/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/SebastiaanYN/rust-playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSebastiaanYN%2Frust-playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSebastiaanYN%2Frust-playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6e70c61d0681d234fd7cc82c86d01118cd73464e
[INFO] testing SebastiaanYN/rust-playground against beta-2021-01-01 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSebastiaanYN%2Frust-playground" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SebastiaanYN/rust-playground on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SebastiaanYN/rust-playground
[INFO] finished tweaking git repo https://github.com/SebastiaanYN/rust-playground
[INFO] tweaked toml for git repo https://github.com/SebastiaanYN/rust-playground written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/SebastiaanYN/rust-playground already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5c09c568c86e2ecdff2f781eaf4877c3b5688cefb7ab631bb6745a8b1e448267
[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" "5c09c568c86e2ecdff2f781eaf4877c3b5688cefb7ab631bb6745a8b1e448267", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5c09c568c86e2ecdff2f781eaf4877c3b5688cefb7ab631bb6745a8b1e448267", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c09c568c86e2ecdff2f781eaf4877c3b5688cefb7ab631bb6745a8b1e448267", kill_on_drop: false }`
[INFO] [stdout] 5c09c568c86e2ecdff2f781eaf4877c3b5688cefb7ab631bb6745a8b1e448267
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9e95ce79356b716b201d0968ced8ff313d16778eb912f3bb2651eee05312b2b1
[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" "9e95ce79356b716b201d0968ced8ff313d16778eb912f3bb2651eee05312b2b1", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.86s
[INFO] running `Command { std: "docker" "inspect" "9e95ce79356b716b201d0968ced8ff313d16778eb912f3bb2651eee05312b2b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e95ce79356b716b201d0968ced8ff313d16778eb912f3bb2651eee05312b2b1", kill_on_drop: false }`
[INFO] [stdout] 9e95ce79356b716b201d0968ced8ff313d16778eb912f3bb2651eee05312b2b1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "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] 6cec70f9677639e6b0d4d87d35720fe58a1e75d0234567a1cff513fd899c4ebf
[INFO] running `Command { std: "docker" "start" "-a" "6cec70f9677639e6b0d4d87d35720fe58a1e75d0234567a1cff513fd899c4ebf", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.68s
[INFO] running `Command { std: "docker" "inspect" "6cec70f9677639e6b0d4d87d35720fe58a1e75d0234567a1cff513fd899c4ebf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6cec70f9677639e6b0d4d87d35720fe58a1e75d0234567a1cff513fd899c4ebf", kill_on_drop: false }`
[INFO] [stdout] 6cec70f9677639e6b0d4d87d35720fe58a1e75d0234567a1cff513fd899c4ebf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4d36d85c3792b77d9e9a3b0ad716d18249d0bc6cfb48085b7ef321ae0deb28f2
[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" "4d36d85c3792b77d9e9a3b0ad716d18249d0bc6cfb48085b7ef321ae0deb28f2", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_playground-a50e1fd89fc2f00b
[INFO] [stdout] running 26 tests
[INFO] [stdout] test lists::macros::test::empty_linked_list ... ok
[INFO] [stdout] test lists::macros::test::multiple_linked_list ... ok
[INFO] [stdout] test lists::macros::test::repeating_value ... ok
[INFO] [stdout] test lists::macros::test::single_linked_list ... ok
[INFO] [stdout] test lists::safe_linked_list::test::peek_back ... ok
[INFO] [stdout] test lists::safe_linked_list::test::pop_back ... ok
[INFO] [stdout] test lists::safe_linked_list::test::peek_front ... ok
[INFO] [stdout] test lists::safe_linked_list::test::peek_back_mut ... ok
[INFO] [stdout] test lists::safe_linked_list::test::peek_front_mut ... ok
[INFO] [stdout] test lists::safe_linked_list::test::push_back ... ok
[INFO] [stdout] test lists::safe_linked_list::test::iterator ... ok
[INFO] [stdout] test lists::safe_linked_list::test::pop_front ... ok
[INFO] [stdout] test lists::safe_linked_list::test::push_front ... ok
[INFO] [stdout] test lists::unsafe_linked_list::test::clear ... ok
[INFO] [stdout] test lists::unsafe_linked_list::test::back ... ok
[INFO] [stdout] test lists::unsafe_linked_list::test::back_mut ... ok
[INFO] [stdout] test lists::unsafe_linked_list::test::push_front ... ok
[INFO] [stdout] test lists::unsafe_linked_list::test::nth ... ok
[INFO] [stdout] test lists::unsafe_linked_list::test::pop_back ... ok
[INFO] [stdout] test lists::unsafe_linked_list::test::pop_front ... ok
[INFO] [stdout] test lists::unsafe_linked_list::test::front ... ok
[INFO] [stdout] test lists::unsafe_linked_list::test::is_empty ... ok
[INFO] [stdout] test lists::unsafe_linked_list::test::push_back ... ok
[INFO] [stdout] test lists::unsafe_linked_list::test::len ... ok
[INFO] [stdout] test lists::unsafe_linked_list::test::front_mut ... ok
[INFO] [stdout] test lists::unsafe_linked_list::test::iterator ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 26 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.14s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4d36d85c3792b77d9e9a3b0ad716d18249d0bc6cfb48085b7ef321ae0deb28f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d36d85c3792b77d9e9a3b0ad716d18249d0bc6cfb48085b7ef321ae0deb28f2", kill_on_drop: false }`
[INFO] [stdout] 4d36d85c3792b77d9e9a3b0ad716d18249d0bc6cfb48085b7ef321ae0deb28f2