[INFO] crate synchronized-writer 1.1.5 is already in cache
[INFO] extracting crate synchronized-writer 1.1.5 into work/ex/beta-1.37-6/sources/1.36.0/reg/synchronized-writer/1.1.5
[INFO] extracting crate synchronized-writer 1.1.5 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/synchronized-writer/1.1.5
[INFO] validating manifest of synchronized-writer-1.1.5 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of synchronized-writer-1.1.5 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing synchronized-writer-1.1.5
[INFO] finished frobbing synchronized-writer-1.1.5
[INFO] frobbed toml for synchronized-writer-1.1.5 written to work/ex/beta-1.37-6/sources/1.36.0/reg/synchronized-writer/1.1.5/Cargo.toml
[INFO] started frobbing synchronized-writer-1.1.5
[INFO] finished frobbing synchronized-writer-1.1.5
[INFO] frobbed toml for synchronized-writer-1.1.5 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/synchronized-writer/1.1.5/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing synchronized-writer-1.1.5 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/synchronized-writer/1.1.5:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] bc53b6e44bbfe16662082994f8c7f96f509deaeed98d2745af74a7a6adef02b4
[INFO] running `"docker" "start" "-a" "bc53b6e44bbfe16662082994f8c7f96f509deaeed98d2745af74a7a6adef02b4"`
[INFO] [stderr]    Compiling synchronized-writer v1.1.5 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `"docker" "inspect" "bc53b6e44bbfe16662082994f8c7f96f509deaeed98d2745af74a7a6adef02b4"`
[INFO] running `"docker" "rm" "-f" "bc53b6e44bbfe16662082994f8c7f96f509deaeed98d2745af74a7a6adef02b4"`
[INFO] [stdout] bc53b6e44bbfe16662082994f8c7f96f509deaeed98d2745af74a7a6adef02b4
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/synchronized-writer/1.1.5:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 561a600a575a0196659c381a75c729f3b47a728ffa176eff20fd74a4e2a808e8
[INFO] running `"docker" "start" "-a" "561a600a575a0196659c381a75c729f3b47a728ffa176eff20fd74a4e2a808e8"`
[INFO] [stderr]    Compiling synchronized-writer v1.1.5 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.78s
[INFO] running `"docker" "inspect" "561a600a575a0196659c381a75c729f3b47a728ffa176eff20fd74a4e2a808e8"`
[INFO] running `"docker" "rm" "-f" "561a600a575a0196659c381a75c729f3b47a728ffa176eff20fd74a4e2a808e8"`
[INFO] [stdout] 561a600a575a0196659c381a75c729f3b47a728ffa176eff20fd74a4e2a808e8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/synchronized-writer/1.1.5:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 41b92840e004bd89522c8383401d75a653645c860960d413bacead4630c9148b
[INFO] running `"docker" "start" "-a" "41b92840e004bd89522c8383401d75a653645c860960d413bacead4630c9148b"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/synchronized_writer-d5534d8cbc4ef1b8
[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]      Running /opt/crater/target/debug/deps/synchronized_option_writer-424199f66f1e0ba0
[INFO] [stderr]      Running /opt/crater/target/debug/deps/synchronized_writer-c53608eec7277812
[INFO] [stdout] 
[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" "41b92840e004bd89522c8383401d75a653645c860960d413bacead4630c9148b"`
[INFO] running `"docker" "rm" "-f" "41b92840e004bd89522c8383401d75a653645c860960d413bacead4630c9148b"`
[INFO] [stdout] 41b92840e004bd89522c8383401d75a653645c860960d413bacead4630c9148b