[INFO] fetching crate maybe-owned 0.3.4...
[INFO] testing maybe-owned-0.3.4 against 1.49.0 for beta-1.50-1
[INFO] extracting crate maybe-owned 0.3.4 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate maybe-owned 0.3.4 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate maybe-owned 0.3.4
[INFO] finished tweaking crates.io crate maybe-owned 0.3.4
[INFO] tweaked toml for crates.io crate maybe-owned 0.3.4 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate maybe-owned 0.3.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded itoa v0.4.5
[INFO] [stderr]   Downloaded proc-macro2 v1.0.13
[INFO] [stderr]   Downloaded serde v1.0.110
[INFO] [stderr]   Downloaded quote v1.0.6
[INFO] [stderr]   Downloaded ryu v1.0.4
[INFO] [stderr]   Downloaded syn v1.0.23
[INFO] [stderr]   Downloaded serde_derive v1.0.110
[INFO] [stderr]   Downloaded serde_json v1.0.53
[INFO] running `Command { std: "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" "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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "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] 0f2a9910aeb0d51fe4b4cedc6d5d2ae32ac77386b7fbfd467cd1094c188e3164
[INFO] running `Command { std: "docker" "start" "-a" "0f2a9910aeb0d51fe4b4cedc6d5d2ae32ac77386b7fbfd467cd1094c188e3164", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0f2a9910aeb0d51fe4b4cedc6d5d2ae32ac77386b7fbfd467cd1094c188e3164", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f2a9910aeb0d51fe4b4cedc6d5d2ae32ac77386b7fbfd467cd1094c188e3164", kill_on_drop: false }`
[INFO] [stdout] 0f2a9910aeb0d51fe4b4cedc6d5d2ae32ac77386b7fbfd467cd1094c188e3164
[INFO] running `Command { std: "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" "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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b4a09711a22b0098199b9e92e8cfd60de68e4220d52b88aa73a54df529e29f42
[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" "b4a09711a22b0098199b9e92e8cfd60de68e4220d52b88aa73a54df529e29f42", kill_on_drop: false }`
[INFO] [stderr]    Compiling maybe-owned v0.3.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `Command { std: "docker" "inspect" "b4a09711a22b0098199b9e92e8cfd60de68e4220d52b88aa73a54df529e29f42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4a09711a22b0098199b9e92e8cfd60de68e4220d52b88aa73a54df529e29f42", kill_on_drop: false }`
[INFO] [stdout] b4a09711a22b0098199b9e92e8cfd60de68e4220d52b88aa73a54df529e29f42
[INFO] running `Command { std: "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" "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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "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] d70a5a02594c4041bf150c6e41ee6ce18157b94ed944f95aec720d0cc2de21f3
[INFO] running `Command { std: "docker" "start" "-a" "d70a5a02594c4041bf150c6e41ee6ce18157b94ed944f95aec720d0cc2de21f3", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.13
[INFO] [stderr]    Compiling serde v1.0.110
[INFO] [stderr]    Compiling syn v1.0.23
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]    Compiling itoa v0.4.5
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]    Compiling serde_json v1.0.53
[INFO] [stderr]    Compiling serde_derive v1.0.110
[INFO] [stderr]    Compiling maybe-owned v0.3.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 26.98s
[INFO] running `Command { std: "docker" "inspect" "d70a5a02594c4041bf150c6e41ee6ce18157b94ed944f95aec720d0cc2de21f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d70a5a02594c4041bf150c6e41ee6ce18157b94ed944f95aec720d0cc2de21f3", kill_on_drop: false }`
[INFO] [stdout] d70a5a02594c4041bf150c6e41ee6ce18157b94ed944f95aec720d0cc2de21f3
[INFO] running `Command { std: "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" "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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2d590107955895d4e0e6f73760a1f85e392c4e6aa2a412fffa492c907f1602a5
[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" "2d590107955895d4e0e6f73760a1f85e392c4e6aa2a412fffa492c907f1602a5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/maybe_owned-05b125bb61a75797
[INFO] [stdout] 
[INFO] [stdout] running 35 tests
[INFO] [stdout] test tests::borrow ... ok
[INFO] [stdout] test tests::clone_borrow ... ok
[INFO] [stdout] test tests::clone_owned ... ok
[INFO] [stdout] test tests::from_str ... ok
[INFO] [stdout] test tests::has_as_mut ... ok
[INFO] [stdout] test tests::has_as_ref ... ok
[INFO] [stdout] test tests::has_borrow ... ok
[INFO] [stdout] test tests::has_default ... ok
[INFO] [stdout] test tests::has_deref ... ok
[INFO] [stdout] test tests::has_deref_mut ... ok
[INFO] [stdout] test tests::has_display ... ok
[INFO] [stdout] test tests::has_eq ... ok
[INFO] [stdout] test tests::has_hash ... ok
[INFO] [stdout] test tests::has_ord ... ok
[INFO] [stdout] test tests::has_partial_eq ... ok
[INFO] [stdout] test tests::into_cow ... ok
[INFO] [stdout] test tests::into_inner ... ok
[INFO] [stdout] test tests::into_with_borrow ... ok
[INFO] [stdout] test tests::into_with_owned ... ok
[INFO] [stdout] test tests::is_owned ... ok
[INFO] [stdout] test tests::reborrow_mut ... ok
[INFO] [stdout] test transitive_impl::test::not_and_neg_work_for_think_test_type ... ok
[INFO] [stdout] test transitive_impl::test::op_assign_impls_exist_mut ... ok
[INFO] [stdout] test transitive_impl::test::op_impls_exist ... ok
[INFO] [stdout] test transitive_impl::test::op_assign_impls_exist ... ok
[INFO] [stdout] test transitive_impl::test::op_impls_exist_for_mut ... ok
[INFO] [stdout] test transitive_impl::test::not_and_neg_are_impl_mut ... ok
[INFO] [stdout] test transitive_impl::test::not_and_neg_are_impl ... ok
[INFO] [stdout] test tests::to_mut ... ok
[INFO] [stdout] test tests::as_ref ... ok
[INFO] [stdout] test tests::from_cow ... ok
[INFO] [stdout] test tests::make_owned ... ok
[INFO] [stdout] test tests::has_borrow_mut ... ok
[INFO] [stdout] test tests::has_partial_ord ... ok
[INFO] [stdout] test tests::has_clone ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 35 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests maybe-owned
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/lib.rs - MaybeOwned (line 69) ... ok
[INFO] [stdout] test src/lib.rs - MaybeOwned (line 84) ... ok
[INFO] [stdout] test src/lib.rs - MaybeOwned (line 55) ... ok
[INFO] [stdout] test src/lib.rs - MaybeOwned::to_mut (line 386) ... ok
[INFO] [stdout] test src/lib.rs - MaybeOwnedMut::make_owned (line 337) ... ok
[INFO] [stdout] test src/lib.rs - MaybeOwned::make_owned (line 336) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2d590107955895d4e0e6f73760a1f85e392c4e6aa2a412fffa492c907f1602a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d590107955895d4e0e6f73760a1f85e392c4e6aa2a412fffa492c907f1602a5", kill_on_drop: false }`
[INFO] [stdout] 2d590107955895d4e0e6f73760a1f85e392c4e6aa2a412fffa492c907f1602a5