[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 master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSebastiaanYN%2Frust-playground" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SebastiaanYN/rust-playground on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "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-2/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" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4a81d0c950fad59a6612c4c1992f39bc3536dcb3b6964dc6bbd9eeb577cb338b
[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" "4a81d0c950fad59a6612c4c1992f39bc3536dcb3b6964dc6bbd9eeb577cb338b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4a81d0c950fad59a6612c4c1992f39bc3536dcb3b6964dc6bbd9eeb577cb338b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a81d0c950fad59a6612c4c1992f39bc3536dcb3b6964dc6bbd9eeb577cb338b", kill_on_drop: false }`
[INFO] [stdout] 4a81d0c950fad59a6612c4c1992f39bc3536dcb3b6964dc6bbd9eeb577cb338b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=forbid" "-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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 23b005519684acdb1625f84b13995568cd986bac932214863dcd01940152d398
[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" "23b005519684acdb1625f84b13995568cd986bac932214863dcd01940152d398", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `Command { std: "docker" "inspect" "23b005519684acdb1625f84b13995568cd986bac932214863dcd01940152d398", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23b005519684acdb1625f84b13995568cd986bac932214863dcd01940152d398", kill_on_drop: false }`
[INFO] [stdout] 23b005519684acdb1625f84b13995568cd986bac932214863dcd01940152d398
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=forbid" "-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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6861f25ed536c8def76e9b299c088e1b8cd452bcebb6222bae71bc08172b1bde
[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" "6861f25ed536c8def76e9b299c088e1b8cd452bcebb6222bae71bc08172b1bde", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.47s
[INFO] running `Command { std: "docker" "inspect" "6861f25ed536c8def76e9b299c088e1b8cd452bcebb6222bae71bc08172b1bde", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6861f25ed536c8def76e9b299c088e1b8cd452bcebb6222bae71bc08172b1bde", kill_on_drop: false }`
[INFO] [stdout] 6861f25ed536c8def76e9b299c088e1b8cd452bcebb6222bae71bc08172b1bde
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=forbid" "-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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "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] b48d5274bee87596730b8b29066b1ecc7c1c59614568ce1813f17f1aa3797f4e
[INFO] running `Command { std: "docker" "start" "-a" "b48d5274bee87596730b8b29066b1ecc7c1c59614568ce1813f17f1aa3797f4e", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_playground-a0ef5a797610936e
[INFO] [stdout] 
[INFO] [stdout] running 26 tests
[INFO] [stdout] test lists::macros::test::empty_linked_list ... ok
[INFO] [stdout] test lists::macros::test::repeating_value ... ok
[INFO] [stdout] test lists::macros::test::multiple_linked_list ... ok
[INFO] [stdout] test lists::safe_linked_list::test::peek_back ... ok
[INFO] [stdout] test lists::safe_linked_list::test::peek_back_mut ... ok
[INFO] [stdout] test lists::safe_linked_list::test::peek_front ... ok
[INFO] [stdout] test lists::safe_linked_list::test::peek_front_mut ... ok
[INFO] [stdout] test lists::safe_linked_list::test::pop_front ... ok
[INFO] [stdout] test lists::safe_linked_list::test::push_back ... ok
[INFO] [stdout] test lists::safe_linked_list::test::push_front ... ok
[INFO] [stdout] test lists::unsafe_linked_list::test::back_mut ... ok
[INFO] [stdout] test lists::unsafe_linked_list::test::clear ... ok
[INFO] [stdout] test lists::unsafe_linked_list::test::front ... ok
[INFO] [stdout] test lists::unsafe_linked_list::test::front_mut ... ok
[INFO] [stdout] test lists::unsafe_linked_list::test::is_empty ... ok
[INFO] [stdout] test lists::unsafe_linked_list::test::iterator ... ok
[INFO] [stdout] test lists::unsafe_linked_list::test::len ... 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::push_back ... ok
[INFO] [stdout] test lists::unsafe_linked_list::test::push_front ... ok
[INFO] [stdout] test lists::unsafe_linked_list::test::back ... ok
[INFO] [stdout] test lists::safe_linked_list::test::pop_back ... ok
[INFO] [stdout] test lists::safe_linked_list::test::iterator ... ok
[INFO] [stdout] test lists::macros::test::single_linked_list ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 26 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b48d5274bee87596730b8b29066b1ecc7c1c59614568ce1813f17f1aa3797f4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b48d5274bee87596730b8b29066b1ecc7c1c59614568ce1813f17f1aa3797f4e", kill_on_drop: false }`
[INFO] [stdout] b48d5274bee87596730b8b29066b1ecc7c1c59614568ce1813f17f1aa3797f4e