[INFO] fetching crate sp-serializer 2.0.0-alpha.6...
[INFO] testing sp-serializer-2.0.0-alpha.6 against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274
[INFO] extracting crate sp-serializer 2.0.0-alpha.6 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate sp-serializer 2.0.0-alpha.6 on toolchain 28742a1146f10a4f09369baad027a464acb7a766
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate sp-serializer 2.0.0-alpha.6
[INFO] finished tweaking crates.io crate sp-serializer 2.0.0-alpha.6
[INFO] tweaked toml for crates.io crate sp-serializer 2.0.0-alpha.6 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 74ea2e8105fabdb9abb47ee67fcf3323efdefba2c715ace093125d3b552bf0d2
[INFO] running `"docker" "start" "-a" "74ea2e8105fabdb9abb47ee67fcf3323efdefba2c715ace093125d3b552bf0d2"`
[INFO] [stderr]    Compiling ryu v1.0.3
[INFO] [stderr]    Compiling itoa v0.4.5
[INFO] [stderr]    Compiling serde_json v1.0.51
[INFO] [stderr]    Compiling sp-serializer v2.0.0-alpha.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.03s
[INFO] running `"docker" "inspect" "74ea2e8105fabdb9abb47ee67fcf3323efdefba2c715ace093125d3b552bf0d2"`
[INFO] running `"docker" "rm" "-f" "74ea2e8105fabdb9abb47ee67fcf3323efdefba2c715ace093125d3b552bf0d2"`
[INFO] [stdout] 74ea2e8105fabdb9abb47ee67fcf3323efdefba2c715ace093125d3b552bf0d2
[INFO] running `"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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] aeb59a8214c827b6c6b17025c649aa47969f0d1d8b0a0afa29e94cf8fc2b6ea7
[INFO] running `"docker" "start" "-a" "aeb59a8214c827b6c6b17025c649aa47969f0d1d8b0a0afa29e94cf8fc2b6ea7"`
[INFO] [stderr]    Compiling sp-serializer v2.0.0-alpha.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `"docker" "inspect" "aeb59a8214c827b6c6b17025c649aa47969f0d1d8b0a0afa29e94cf8fc2b6ea7"`
[INFO] running `"docker" "rm" "-f" "aeb59a8214c827b6c6b17025c649aa47969f0d1d8b0a0afa29e94cf8fc2b6ea7"`
[INFO] [stdout] aeb59a8214c827b6c6b17025c649aa47969f0d1d8b0a0afa29e94cf8fc2b6ea7
[INFO] running `"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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4247f24e4175e99d6063cd7e19e76d7f78b46fdbcb0cfd0b7009a21769b135a2
[INFO] running `"docker" "start" "-a" "4247f24e4175e99d6063cd7e19e76d7f78b46fdbcb0cfd0b7009a21769b135a2"`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/sp_serializer-04a15d974079ab16
[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] [stderr]    Doc-tests sp-serializer
[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 `"docker" "inspect" "4247f24e4175e99d6063cd7e19e76d7f78b46fdbcb0cfd0b7009a21769b135a2"`
[INFO] running `"docker" "rm" "-f" "4247f24e4175e99d6063cd7e19e76d7f78b46fdbcb0cfd0b7009a21769b135a2"`
[INFO] [stdout] 4247f24e4175e99d6063cd7e19e76d7f78b46fdbcb0cfd0b7009a21769b135a2