[INFO] crate synchronized-writer 1.1.7 is already in cache
[INFO] testing synchronized-writer-1.1.7 against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274
[INFO] extracting crate synchronized-writer 1.1.7 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate synchronized-writer 1.1.7 on toolchain 28742a1146f10a4f09369baad027a464acb7a766
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate synchronized-writer 1.1.7
[INFO] finished tweaking crates.io crate synchronized-writer 1.1.7
[INFO] tweaked toml for crates.io crate synchronized-writer 1.1.7 written to /workspace/builds/worker-7/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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 0e56e74c5924545e298b3ef360eb1b42c7c7cbc6d9a93d0c7f3f94c896592304
[INFO] running `"docker" "start" "-a" "0e56e74c5924545e298b3ef360eb1b42c7c7cbc6d9a93d0c7f3f94c896592304"`
[INFO] [stderr]    Compiling synchronized-writer v1.1.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `"docker" "inspect" "0e56e74c5924545e298b3ef360eb1b42c7c7cbc6d9a93d0c7f3f94c896592304"`
[INFO] running `"docker" "rm" "-f" "0e56e74c5924545e298b3ef360eb1b42c7c7cbc6d9a93d0c7f3f94c896592304"`
[INFO] [stdout] 0e56e74c5924545e298b3ef360eb1b42c7c7cbc6d9a93d0c7f3f94c896592304
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 253476f07bc62e0f805cba1d1fcebc0b1689a46784d82d1b5a5e9ea2013e57c4
[INFO] running `"docker" "start" "-a" "253476f07bc62e0f805cba1d1fcebc0b1689a46784d82d1b5a5e9ea2013e57c4"`
[INFO] [stderr]    Compiling synchronized-writer v1.1.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.40s
[INFO] running `"docker" "inspect" "253476f07bc62e0f805cba1d1fcebc0b1689a46784d82d1b5a5e9ea2013e57c4"`
[INFO] running `"docker" "rm" "-f" "253476f07bc62e0f805cba1d1fcebc0b1689a46784d82d1b5a5e9ea2013e57c4"`
[INFO] [stdout] 253476f07bc62e0f805cba1d1fcebc0b1689a46784d82d1b5a5e9ea2013e57c4
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] [stdout] 34592e888bb5d07f4ed81d5d3d3d92c2e35dfc01bed3ca2138a32e606607058a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "34592e888bb5d07f4ed81d5d3d3d92c2e35dfc01bed3ca2138a32e606607058a"`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/synchronized_writer-2ede675b2bbce411
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/synchronized_option_writer-9340b9f0ea0576cc
[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] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/synchronized_writer-2b80e52a25fec326
[INFO] [stdout] running 1 test
[INFO] [stdout] test write_to_option_vec ... 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 2 tests
[INFO] [stdout] test write_to_vec ... ok
[INFO] [stdout] test write_via_multi_threads ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests synchronized-writer
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs -  (line 40) ... ok
[INFO] [stdout] test src/lib.rs -  (line 7) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "34592e888bb5d07f4ed81d5d3d3d92c2e35dfc01bed3ca2138a32e606607058a"`
[INFO] running `"docker" "rm" "-f" "34592e888bb5d07f4ed81d5d3d3d92c2e35dfc01bed3ca2138a32e606607058a"`
[INFO] [stdout] 34592e888bb5d07f4ed81d5d3d3d92c2e35dfc01bed3ca2138a32e606607058a