[INFO] fetching crate rw_lease 0.1.0...
[INFO] testing rw_lease-0.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate rw_lease 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate rw_lease 0.1.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rw_lease 0.1.0
[INFO] finished tweaking crates.io crate rw_lease 0.1.0
[INFO] tweaked toml for crates.io crate rw_lease 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "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] f8a66dd7593e9b2530e3cd9789e1e37b7c7f4565f3a6b93d823c5554385b71a5
[INFO] running `Command { std: "docker" "start" "-a" "f8a66dd7593e9b2530e3cd9789e1e37b7c7f4565f3a6b93d823c5554385b71a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f8a66dd7593e9b2530e3cd9789e1e37b7c7f4565f3a6b93d823c5554385b71a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8a66dd7593e9b2530e3cd9789e1e37b7c7f4565f3a6b93d823c5554385b71a5", kill_on_drop: false }`
[INFO] [stdout] f8a66dd7593e9b2530e3cd9789e1e37b7c7f4565f3a6b93d823c5554385b71a5
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 544d8d540aaf4f19442b3464f8ad310da30c12815011a6511bde3a80035f87d3
[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" "544d8d540aaf4f19442b3464f8ad310da30c12815011a6511bde3a80035f87d3", kill_on_drop: false }`
[INFO] [stderr]    Compiling atomic_prim_traits v0.2.0
[INFO] [stderr]    Compiling primitive_traits v0.2.0
[INFO] [stderr]    Compiling rw_lease v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.37s
[INFO] running `Command { std: "docker" "inspect" "544d8d540aaf4f19442b3464f8ad310da30c12815011a6511bde3a80035f87d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "544d8d540aaf4f19442b3464f8ad310da30c12815011a6511bde3a80035f87d3", kill_on_drop: false }`
[INFO] [stdout] 544d8d540aaf4f19442b3464f8ad310da30c12815011a6511bde3a80035f87d3
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 16a493fccfe5f3e888e065a7d6892bcc971be908af866e7e27bc17f5e61b2a7c
[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" "16a493fccfe5f3e888e065a7d6892bcc971be908af866e7e27bc17f5e61b2a7c", kill_on_drop: false }`
[INFO] [stderr]    Compiling rw_lease v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `Command { std: "docker" "inspect" "16a493fccfe5f3e888e065a7d6892bcc971be908af866e7e27bc17f5e61b2a7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16a493fccfe5f3e888e065a7d6892bcc971be908af866e7e27bc17f5e61b2a7c", kill_on_drop: false }`
[INFO] [stdout] 16a493fccfe5f3e888e065a7d6892bcc971be908af866e7e27bc17f5e61b2a7c
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 29e34ddde1f9cedaae6165457db8d2ef5a449baed2c703b12318ce1198d2074d
[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" "29e34ddde1f9cedaae6165457db8d2ef5a449baed2c703b12318ce1198d2074d", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] running 5 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rw_lease-d1d5924992fc0a20)
[INFO] [stdout] test tests::solo_writing ... ok
[INFO] [stdout] test tests::read_with_max_readers ... ok
[INFO] [stderr]    Doc-tests rw_lease
[INFO] [stdout] test tests::read_with_writer ... ok
[INFO] [stdout] test tests::solo_reading ... ok
[INFO] [stdout] test tests::read_all_ones ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[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" "29e34ddde1f9cedaae6165457db8d2ef5a449baed2c703b12318ce1198d2074d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29e34ddde1f9cedaae6165457db8d2ef5a449baed2c703b12318ce1198d2074d", kill_on_drop: false }`
[INFO] [stdout] 29e34ddde1f9cedaae6165457db8d2ef5a449baed2c703b12318ce1198d2074d