[INFO] fetching crate zarr 0.0.1-placeholder...
[INFO] testing zarr-0.0.1-placeholder against 1.49.0 for beta-1.50-1
[INFO] extracting crate zarr 0.0.1-placeholder into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate zarr 0.0.1-placeholder 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 zarr 0.0.1-placeholder
[INFO] finished tweaking crates.io crate zarr 0.0.1-placeholder
[INFO] tweaked toml for crates.io crate zarr 0.0.1-placeholder written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "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" "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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/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] f8a6a62b64ed4f370f35b82378a81633f050a94ba744d4a420735049970a1533
[INFO] running `Command { std: "docker" "start" "-a" "f8a6a62b64ed4f370f35b82378a81633f050a94ba744d4a420735049970a1533", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f8a6a62b64ed4f370f35b82378a81633f050a94ba744d4a420735049970a1533", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8a6a62b64ed4f370f35b82378a81633f050a94ba744d4a420735049970a1533", kill_on_drop: false }`
[INFO] [stdout] f8a6a62b64ed4f370f35b82378a81633f050a94ba744d4a420735049970a1533
[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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6ae65fbc7aff566ed12464d32a6c82ccd35eaffeacc7e08a8c7b234bca49be09
[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" "6ae65fbc7aff566ed12464d32a6c82ccd35eaffeacc7e08a8c7b234bca49be09", kill_on_drop: false }`
[INFO] [stderr]    Compiling zarr v0.0.1-placeholder (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `Command { std: "docker" "inspect" "6ae65fbc7aff566ed12464d32a6c82ccd35eaffeacc7e08a8c7b234bca49be09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ae65fbc7aff566ed12464d32a6c82ccd35eaffeacc7e08a8c7b234bca49be09", kill_on_drop: false }`
[INFO] [stdout] 6ae65fbc7aff566ed12464d32a6c82ccd35eaffeacc7e08a8c7b234bca49be09
[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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 01d218f8e3485a787be4931d8f05d6f0188d1ee296d3763a5e44fa7690acc9c2
[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" "01d218f8e3485a787be4931d8f05d6f0188d1ee296d3763a5e44fa7690acc9c2", kill_on_drop: false }`
[INFO] [stderr]    Compiling zarr v0.0.1-placeholder (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.86s
[INFO] running `Command { std: "docker" "inspect" "01d218f8e3485a787be4931d8f05d6f0188d1ee296d3763a5e44fa7690acc9c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01d218f8e3485a787be4931d8f05d6f0188d1ee296d3763a5e44fa7690acc9c2", kill_on_drop: false }`
[INFO] [stdout] 01d218f8e3485a787be4931d8f05d6f0188d1ee296d3763a5e44fa7690acc9c2
[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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "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] b8c83b655d4404f5c8fedeea942f3e140c74c1f6e24d7512a5839c239ac6f41e
[INFO] running `Command { std: "docker" "start" "-a" "b8c83b655d4404f5c8fedeea942f3e140c74c1f6e24d7512a5839c239ac6f41e", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/zarr-547bc2228c0dc1df
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]    Doc-tests zarr
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b8c83b655d4404f5c8fedeea942f3e140c74c1f6e24d7512a5839c239ac6f41e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8c83b655d4404f5c8fedeea942f3e140c74c1f6e24d7512a5839c239ac6f41e", kill_on_drop: false }`
[INFO] [stdout] b8c83b655d4404f5c8fedeea942f3e140c74c1f6e24d7512a5839c239ac6f41e