[INFO] fetching crate sp-serializer 2.0.0-alpha.6...
[INFO] testing sp-serializer-2.0.0-alpha.6 against try#41997647ba6a77908f6ef64401414feb00bccf16 for pr-71274
[INFO] extracting crate sp-serializer 2.0.0-alpha.6 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate sp-serializer 2.0.0-alpha.6 on toolchain 41997647ba6a77908f6ef64401414feb00bccf16
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "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-5/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+41997647ba6a77908f6ef64401414feb00bccf16" "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] e56d2a0c3c9a88a10900478d97a60e94cc24f0af33edcee824e2c178c1e5e569
[INFO] running `"docker" "start" "-a" "e56d2a0c3c9a88a10900478d97a60e94cc24f0af33edcee824e2c178c1e5e569"`
[INFO] [stderr]    Compiling ryu v1.0.3
[INFO] [stderr]    Compiling serde v1.0.106
[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 15.77s
[INFO] running `"docker" "inspect" "e56d2a0c3c9a88a10900478d97a60e94cc24f0af33edcee824e2c178c1e5e569"`
[INFO] running `"docker" "rm" "-f" "e56d2a0c3c9a88a10900478d97a60e94cc24f0af33edcee824e2c178c1e5e569"`
[INFO] [stdout] e56d2a0c3c9a88a10900478d97a60e94cc24f0af33edcee824e2c178c1e5e569
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+41997647ba6a77908f6ef64401414feb00bccf16" "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] 13cf9f1739169a29beb190edab7dd659b84c83748ea1d4f08247f7bc8033dbcc
[INFO] running `"docker" "start" "-a" "13cf9f1739169a29beb190edab7dd659b84c83748ea1d4f08247f7bc8033dbcc"`
[INFO] [stderr]    Compiling sp-serializer v2.0.0-alpha.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `"docker" "inspect" "13cf9f1739169a29beb190edab7dd659b84c83748ea1d4f08247f7bc8033dbcc"`
[INFO] running `"docker" "rm" "-f" "13cf9f1739169a29beb190edab7dd659b84c83748ea1d4f08247f7bc8033dbcc"`
[INFO] [stdout] 13cf9f1739169a29beb190edab7dd659b84c83748ea1d4f08247f7bc8033dbcc
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+41997647ba6a77908f6ef64401414feb00bccf16" "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] 8371be047b031c24f0ca3546a5fe76c5a48cccb165c9f203ed76e12dc201550a
[INFO] running `"docker" "start" "-a" "8371be047b031c24f0ca3546a5fe76c5a48cccb165c9f203ed76e12dc201550a"`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[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" "8371be047b031c24f0ca3546a5fe76c5a48cccb165c9f203ed76e12dc201550a"`
[INFO] running `"docker" "rm" "-f" "8371be047b031c24f0ca3546a5fe76c5a48cccb165c9f203ed76e12dc201550a"`
[INFO] [stdout] 8371be047b031c24f0ca3546a5fe76c5a48cccb165c9f203ed76e12dc201550a