[INFO] crate io-result-optional 0.1.2 is already in cache
[INFO] extracting crate io-result-optional 0.1.2 into work/ex/beta-1.37-6/sources/1.36.0/reg/io-result-optional/0.1.2
[INFO] extracting crate io-result-optional 0.1.2 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/io-result-optional/0.1.2
[INFO] validating manifest of io-result-optional-0.1.2 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 io-result-optional-0.1.2 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 io-result-optional-0.1.2
[INFO] finished frobbing io-result-optional-0.1.2
[INFO] frobbed toml for io-result-optional-0.1.2 written to work/ex/beta-1.37-6/sources/1.36.0/reg/io-result-optional/0.1.2/Cargo.toml
[INFO] started frobbing io-result-optional-0.1.2
[INFO] finished frobbing io-result-optional-0.1.2
[INFO] frobbed toml for io-result-optional-0.1.2 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/io-result-optional/0.1.2/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 io-result-optional-0.1.2 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/io-result-optional/0.1.2:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 5c47c6d1f9970314d9103f418ed147445b6551ab420c1154afa67e6a430877cf
[INFO] running `"docker" "start" "-a" "5c47c6d1f9970314d9103f418ed147445b6551ab420c1154afa67e6a430877cf"`
[INFO] [stderr]    Compiling io-result-optional v0.1.2 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `"docker" "inspect" "5c47c6d1f9970314d9103f418ed147445b6551ab420c1154afa67e6a430877cf"`
[INFO] running `"docker" "rm" "-f" "5c47c6d1f9970314d9103f418ed147445b6551ab420c1154afa67e6a430877cf"`
[INFO] [stdout] 5c47c6d1f9970314d9103f418ed147445b6551ab420c1154afa67e6a430877cf
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/io-result-optional/0.1.2:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 60f52e6102f362553861c45262168769af36215eee94903fd4a2e0d473f53f30
[INFO] running `"docker" "start" "-a" "60f52e6102f362553861c45262168769af36215eee94903fd4a2e0d473f53f30"`
[INFO] [stderr]    Compiling io-result-optional v0.1.2 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `"docker" "inspect" "60f52e6102f362553861c45262168769af36215eee94903fd4a2e0d473f53f30"`
[INFO] running `"docker" "rm" "-f" "60f52e6102f362553861c45262168769af36215eee94903fd4a2e0d473f53f30"`
[INFO] [stdout] 60f52e6102f362553861c45262168769af36215eee94903fd4a2e0d473f53f30
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/io-result-optional/0.1.2:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 49c7fd49a4b448d6641c2385a18fcda99667ef2c77e974570f4c55760ac3eaf4
[INFO] running `"docker" "start" "-a" "49c7fd49a4b448d6641c2385a18fcda99667ef2c77e974570f4c55760ac3eaf4"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/io_result_optional-0c21decf30fccb76
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::existing_some ... ok
[INFO] [stdout] test tests::non_existing_none ... ok
[INFO] [stdout] test tests::other_is_error ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests io-result-optional
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/lib.rs -  (line 7) ... ok
[INFO] [stdout] test src/lib.rs - IoResultOptional::optional (line 51) ... ok
[INFO] [stdout] test src/lib.rs -  (line 24) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "49c7fd49a4b448d6641c2385a18fcda99667ef2c77e974570f4c55760ac3eaf4"`
[INFO] running `"docker" "rm" "-f" "49c7fd49a4b448d6641c2385a18fcda99667ef2c77e974570f4c55760ac3eaf4"`
[INFO] [stdout] 49c7fd49a4b448d6641c2385a18fcda99667ef2c77e974570f4c55760ac3eaf4