[INFO] fetching crate if_empty 0.3.0...
[INFO] testing if_empty-0.3.0 against 1.59.0 for beta-1.60-1
[INFO] extracting crate if_empty 0.3.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate if_empty 0.3.0 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate if_empty 0.3.0
[INFO] finished tweaking crates.io crate if_empty 0.3.0
[INFO] tweaked toml for crates.io crate if_empty 0.3.0 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate crates.io crate if_empty 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 007772a1885dd6ee52e6b46883a0db48c6dd3a9c996a5c871eb7a22322409081
[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" "007772a1885dd6ee52e6b46883a0db48c6dd3a9c996a5c871eb7a22322409081", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "007772a1885dd6ee52e6b46883a0db48c6dd3a9c996a5c871eb7a22322409081", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "007772a1885dd6ee52e6b46883a0db48c6dd3a9c996a5c871eb7a22322409081", kill_on_drop: false }`
[INFO] [stdout] 007772a1885dd6ee52e6b46883a0db48c6dd3a9c996a5c871eb7a22322409081
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 298a291a9df9d3cf6680d3a1ee92f178b3d214a12d2876430277859316b44062
[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" "298a291a9df9d3cf6680d3a1ee92f178b3d214a12d2876430277859316b44062", kill_on_drop: false }`
[INFO] [stderr]    Compiling if_empty_derive v0.1.0
[INFO] [stderr]    Compiling if_empty v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.98s
[INFO] running `Command { std: "docker" "inspect" "298a291a9df9d3cf6680d3a1ee92f178b3d214a12d2876430277859316b44062", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "298a291a9df9d3cf6680d3a1ee92f178b3d214a12d2876430277859316b44062", kill_on_drop: false }`
[INFO] [stdout] 298a291a9df9d3cf6680d3a1ee92f178b3d214a12d2876430277859316b44062
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "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] 2af5a40d07a0cb8af34bf0d09fc79e1ba28b6978db6511ad3e1f815d586fc838
[INFO] running `Command { std: "docker" "start" "-a" "2af5a40d07a0cb8af34bf0d09fc79e1ba28b6978db6511ad3e1f815d586fc838", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling if_empty v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.25s
[INFO] running `Command { std: "docker" "inspect" "2af5a40d07a0cb8af34bf0d09fc79e1ba28b6978db6511ad3e1f815d586fc838", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2af5a40d07a0cb8af34bf0d09fc79e1ba28b6978db6511ad3e1f815d586fc838", kill_on_drop: false }`
[INFO] [stdout] 2af5a40d07a0cb8af34bf0d09fc79e1ba28b6978db6511ad3e1f815d586fc838
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] dfe89c7229a9c0802944481dc7e0cb75638717f15853a6921b8228a531b46b67
[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" "dfe89c7229a9c0802944481dc7e0cb75638717f15853a6921b8228a531b46b67", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] running 6 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/if_empty-b5bac58031f236fd)
[INFO] [stdout] test tests::string ... ok
[INFO] [stderr]    Doc-tests if_empty
[INFO] [stdout] test tests::str ... ok
[INFO] [stdout] test tests::derive_macro ... ok
[INFO] [stdout] test tests::os_string ... ok
[INFO] [stdout] test tests::custom ... ok
[INFO] [stdout] test tests::os_str ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 19) ... ok
[INFO] [stdout] test src/lib.rs - (line 59) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.70s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "dfe89c7229a9c0802944481dc7e0cb75638717f15853a6921b8228a531b46b67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfe89c7229a9c0802944481dc7e0cb75638717f15853a6921b8228a531b46b67", kill_on_drop: false }`
[INFO] [stdout] dfe89c7229a9c0802944481dc7e0cb75638717f15853a6921b8228a531b46b67