[INFO] fetching crate serde_piecewise_default_derive 0.2.0...
[INFO] testing serde_piecewise_default_derive-0.2.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate serde_piecewise_default_derive 0.2.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate serde_piecewise_default_derive 0.2.0 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 serde_piecewise_default_derive 0.2.0
[INFO] finished tweaking crates.io crate serde_piecewise_default_derive 0.2.0
[INFO] tweaked toml for crates.io crate serde_piecewise_default_derive 0.2.0 written to /workspace/builds/worker-8/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] [stdout] a5c09fbff053d26cd497f84fe01d9d06ad154c23b9b954cbb5d9e7905a618960
[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" "a5c09fbff053d26cd497f84fe01d9d06ad154c23b9b954cbb5d9e7905a618960", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a5c09fbff053d26cd497f84fe01d9d06ad154c23b9b954cbb5d9e7905a618960", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5c09fbff053d26cd497f84fe01d9d06ad154c23b9b954cbb5d9e7905a618960", kill_on_drop: false }`
[INFO] [stdout] a5c09fbff053d26cd497f84fe01d9d06ad154c23b9b954cbb5d9e7905a618960
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] b2e5f0b3da71842a9870aa7156c311461d4e51d48b6a724736bab3809e189632
[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" "b2e5f0b3da71842a9870aa7156c311461d4e51d48b6a724736bab3809e189632", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling serde_piecewise_default_derive v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.32s
[INFO] running `Command { std: "docker" "inspect" "b2e5f0b3da71842a9870aa7156c311461d4e51d48b6a724736bab3809e189632", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2e5f0b3da71842a9870aa7156c311461d4e51d48b6a724736bab3809e189632", kill_on_drop: false }`
[INFO] [stdout] b2e5f0b3da71842a9870aa7156c311461d4e51d48b6a724736bab3809e189632
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] [stdout] e40c4c8d5d3efce28db00b02276295eb5f613712ae3453630f50717d9d442519
[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" "e40c4c8d5d3efce28db00b02276295eb5f613712ae3453630f50717d9d442519", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_piecewise_default_derive v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `Command { std: "docker" "inspect" "e40c4c8d5d3efce28db00b02276295eb5f613712ae3453630f50717d9d442519", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e40c4c8d5d3efce28db00b02276295eb5f613712ae3453630f50717d9d442519", kill_on_drop: false }`
[INFO] [stdout] e40c4c8d5d3efce28db00b02276295eb5f613712ae3453630f50717d9d442519
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 7b55814d956efd043f6a157b040a13119d2914e948c8c779d6de7f8335e2133b
[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" "7b55814d956efd043f6a157b040a13119d2914e948c8c779d6de7f8335e2133b", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/serde_piecewise_default_derive-2288c9380cea7e7f
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests serde_piecewise_default_derive
[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] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - deserialize_piecewise_default_derive (line 21) ... ok
[INFO] [stdout] test src/lib.rs - deserialize_piecewise_default_derive (line 34) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7b55814d956efd043f6a157b040a13119d2914e948c8c779d6de7f8335e2133b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b55814d956efd043f6a157b040a13119d2914e948c8c779d6de7f8335e2133b", kill_on_drop: false }`
[INFO] [stdout] 7b55814d956efd043f6a157b040a13119d2914e948c8c779d6de7f8335e2133b