[INFO] fetching crate libcnb 0.2.0...
[INFO] testing libcnb-0.2.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate libcnb 0.2.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate libcnb 0.2.0 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 crates.io crate libcnb 0.2.0
[INFO] finished tweaking crates.io crate libcnb 0.2.0
[INFO] tweaked toml for crates.io crate libcnb 0.2.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded semver v1.0.4
[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" "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] [stdout] e7846c555a09a16207884a612f6ae2e9bd0fc6bf6da6d335885ffd0271794d27
[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" "e7846c555a09a16207884a612f6ae2e9bd0fc6bf6da6d335885ffd0271794d27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e7846c555a09a16207884a612f6ae2e9bd0fc6bf6da6d335885ffd0271794d27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7846c555a09a16207884a612f6ae2e9bd0fc6bf6da6d335885ffd0271794d27", kill_on_drop: false }`
[INFO] [stdout] e7846c555a09a16207884a612f6ae2e9bd0fc6bf6da6d335885ffd0271794d27
[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" "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] 4da146003faf6d73c0a16243f27c33917af4d56f10dfa33a0eb68c45c80d9ccc
[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" "4da146003faf6d73c0a16243f27c33917af4d56f10dfa33a0eb68c45c80d9ccc", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]    Compiling libcnb v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.07s
[INFO] running `Command { std: "docker" "inspect" "4da146003faf6d73c0a16243f27c33917af4d56f10dfa33a0eb68c45c80d9ccc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4da146003faf6d73c0a16243f27c33917af4d56f10dfa33a0eb68c45c80d9ccc", kill_on_drop: false }`
[INFO] [stdout] 4da146003faf6d73c0a16243f27c33917af4d56f10dfa33a0eb68c45c80d9ccc
[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" "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] 78cfda0c637e956ee6e4521490b4c7ff9f3f6062adb3ef4f9ac830d5be3f3191
[INFO] running `Command { std: "docker" "start" "-a" "78cfda0c637e956ee6e4521490b4c7ff9f3f6062adb3ef4f9ac830d5be3f3191", kill_on_drop: false }`
[INFO] [stderr]    Compiling libcnb v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 5.09s
[INFO] running `Command { std: "docker" "inspect" "78cfda0c637e956ee6e4521490b4c7ff9f3f6062adb3ef4f9ac830d5be3f3191", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78cfda0c637e956ee6e4521490b4c7ff9f3f6062adb3ef4f9ac830d5be3f3191", kill_on_drop: false }`
[INFO] [stdout] 78cfda0c637e956ee6e4521490b4c7ff9f3f6062adb3ef4f9ac830d5be3f3191
[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" "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] [stdout] 0ccfe1d2fee0b526af45ae957caf4283d86fd931bf76cc21eaf6d9a40054e14d
[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" "0ccfe1d2fee0b526af45ae957caf4283d86fd931bf76cc21eaf6d9a40054e14d", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/libcnb-12c6acbc91514297)
[INFO] [stdout] 
[INFO] [stdout] running 25 tests
[INFO] [stdout] test data::build_plan::tests::it_writes_simple_build_plan ... ok
[INFO] [stdout] test data::buildpack::tests::buildpack_id_does_not_allow_app ... ok
[INFO] [stdout] test data::buildpack_plan::tests::it_parses_empty ... ok
[INFO] [stdout] test data::buildpack_plan::tests::it_parses_simple ... ok
[INFO] [stdout] test data::buildpack_plan::tests::it_parses_with_metadata ... ok
[INFO] [stdout] test layer_env::test::test_reference_impl_add_root_dir_should_append_posix_directories ... ok
[INFO] [stdout] test layer_env::test::test_read_from_layer_dir_layer_paths_launch ... ok
[INFO] [stdout] test data::buildpack::tests::buildpack_id_does_not_allow_config ... ok
[INFO] [stdout] test layer_env::test::test_read_from_layer_dir_layer_paths_build ... ok
[INFO] [stdout] test layer_env::test::test_modification_behavior_order ... ok
[INFO] [stdout] test platform::tests::from_path_handles_directories_in_env_folder ... ok
[INFO] [stdout] test layer_env::test::test_reference_impl_env_files_have_a_suffix_it_performs_the_matching_action ... ok
[INFO] [stdout] test data::buildpack::tests::buildpack_id_from_str_major ... ok
[INFO] [stdout] test platform::tests::from_path_doesnt_blow_up_if_platform_env_is_missing ... ok
[INFO] [stdout] test data::buildpack::tests::can_serialize_metabuildpack ... ok
[INFO] [stdout] test data::buildpack::tests::can_serialize_minimal_metabuildpack ... ok
[INFO] [stdout] test layer_env::test::test_reference_impl_env_files_have_no_suffix_default_action_is_override ... ok
[INFO] [stdout] test data::layer_content_metadata::tests::metadata_is_optional ... ok
[INFO] [stdout] test layer_env::test::test_layer_env_delta_eq ... ok
[INFO] [stdout] test data::buildpack::tests::buildpack_id_from_str_major_minor ... ok
[INFO] [stdout] test layer_env::test::test_layer_env_delta_fs_read_write ... ok
[INFO] [stdout] test layer_env::test::test_layer_env_insert ... ok
[INFO] [stdout] test data::buildpack::tests::can_serialize_minimal_buildpack ... ok
[INFO] [stdout] test platform::tests::from_path_handles_directories_via_symlinks ... ok
[INFO] [stdout] test env::test::test_into_iterator ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 25 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests libcnb
[INFO] [stdout] 
[INFO] [stdout] running 17 tests
[INFO] [stdout] test src/platform.rs - platform::PlatformEnv::from_path (line 63) - compile ... ok
[INFO] [stdout] test src/platform.rs - platform::PlatformEnv::var (line 45) - compile ... ok
[INFO] [stdout] test src/platform.rs - platform::Platform::from_path (line 28) - compile ... ok
[INFO] [stdout] test src/runtime.rs - runtime::cnb_runtime (line 19) - compile ... ok
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name libcnb --test /opt/rustwide/workdir/src/lib.rs -L dependency=/opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-86422d76b8bd90ed.rlib --extern libcnb=/opt/rustwide/target/debug/deps/liblibcnb-9d892990eb544444.rlib --extern regex=/opt/rustwide/target/debug/deps/libregex-90f11ea12ce25448.rlib --extern semver=/opt/rustwide/target/debug/deps/libsemver-90fb4c3bebb5c142.rlib --extern serde=/opt/rustwide/target/debug/deps/libserde-1c95ca7ba950c895.rlib --extern tempfile=/opt/rustwide/target/debug/deps/libtempfile-150c46338fbc16f2.rlib --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-506b9e4c94f35c09.rlib --extern toml=/opt/rustwide/target/debug/deps/libtoml-609fa428c0afd193.rlib -C embed-bitcode=no --error-format human` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "0ccfe1d2fee0b526af45ae957caf4283d86fd931bf76cc21eaf6d9a40054e14d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ccfe1d2fee0b526af45ae957caf4283d86fd931bf76cc21eaf6d9a40054e14d", kill_on_drop: false }`
[INFO] [stdout] 0ccfe1d2fee0b526af45ae957caf4283d86fd931bf76cc21eaf6d9a40054e14d