[INFO] crate uhttp_chunked_write 0.5.1 is already in cache
[INFO] extracting crate uhttp_chunked_write 0.5.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/uhttp_chunked_write/0.5.1
[INFO] extracting crate uhttp_chunked_write 0.5.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/uhttp_chunked_write/0.5.1
[INFO] validating manifest of uhttp_chunked_write-0.5.1 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of uhttp_chunked_write-0.5.1 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing uhttp_chunked_write-0.5.1
[INFO] finished frobbing uhttp_chunked_write-0.5.1
[INFO] frobbed toml for uhttp_chunked_write-0.5.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/uhttp_chunked_write/0.5.1/Cargo.toml
[INFO] started frobbing uhttp_chunked_write-0.5.1
[INFO] finished frobbing uhttp_chunked_write-0.5.1
[INFO] frobbed toml for uhttp_chunked_write-0.5.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/uhttp_chunked_write/0.5.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing uhttp_chunked_write-0.5.1 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/uhttp_chunked_write/0.5.1:/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 273165b3b7841efe000de6160fc893bf15a209de08145c8e9ef7a96c34690201
[INFO] running `"docker" "start" "-a" "273165b3b7841efe000de6160fc893bf15a209de08145c8e9ef7a96c34690201"`
[INFO] [stderr]    Compiling uhttp_chunked_write v0.5.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]   --> src/lib.rs:65:9
[INFO] [stderr]    |
[INFO] [stderr] 65 |         self.send(&[]).is_ok();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if you intended to assert that this is ok, consider `.unwrap()` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]   --> src/lib.rs:66:9
[INFO] [stderr]    |
[INFO] [stderr] 66 |         self.flush().is_ok();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: if you intended to assert that this is ok, consider `.unwrap()` instead
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `"docker" "inspect" "273165b3b7841efe000de6160fc893bf15a209de08145c8e9ef7a96c34690201"`
[INFO] running `"docker" "rm" "-f" "273165b3b7841efe000de6160fc893bf15a209de08145c8e9ef7a96c34690201"`
[INFO] [stdout] 273165b3b7841efe000de6160fc893bf15a209de08145c8e9ef7a96c34690201
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/uhttp_chunked_write/0.5.1:/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-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] bf1033b7c5c997be9323b2c6bf06fdbf574a3dea7e913ca961882028190f7c7f
[INFO] running `"docker" "start" "-a" "bf1033b7c5c997be9323b2c6bf06fdbf574a3dea7e913ca961882028190f7c7f"`
[INFO] [stderr]    Compiling uhttp_chunked_write v0.5.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]   --> src/lib.rs:65:9
[INFO] [stderr]    |
[INFO] [stderr] 65 |         self.send(&[]).is_ok();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if you intended to assert that this is ok, consider `.unwrap()` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]   --> src/lib.rs:66:9
[INFO] [stderr]    |
[INFO] [stderr] 66 |         self.flush().is_ok();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: if you intended to assert that this is ok, consider `.unwrap()` instead
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `"docker" "inspect" "bf1033b7c5c997be9323b2c6bf06fdbf574a3dea7e913ca961882028190f7c7f"`
[INFO] running `"docker" "rm" "-f" "bf1033b7c5c997be9323b2c6bf06fdbf574a3dea7e913ca961882028190f7c7f"`
[INFO] [stdout] bf1033b7c5c997be9323b2c6bf06fdbf574a3dea7e913ca961882028190f7c7f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/uhttp_chunked_write/0.5.1:/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-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 7e5db3b458eafb415c138fbb5c98e129a202c37d6e38c61753094dff07a5c1e4
[INFO] running `"docker" "start" "-a" "7e5db3b458eafb415c138fbb5c98e129a202c37d6e38c61753094dff07a5c1e4"`
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running /opt/crater/target/debug/deps/uhttp_chunked_write-cedad35ffd5f3c27
[INFO] [stdout] test test::test_chunked_write ... ok
[INFO] [stderr]    Doc-tests uhttp_chunked_write
[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 1 test
[INFO] [stdout] test src/lib.rs -  (line 10) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "7e5db3b458eafb415c138fbb5c98e129a202c37d6e38c61753094dff07a5c1e4"`
[INFO] running `"docker" "rm" "-f" "7e5db3b458eafb415c138fbb5c98e129a202c37d6e38c61753094dff07a5c1e4"`
[INFO] [stdout] 7e5db3b458eafb415c138fbb5c98e129a202c37d6e38c61753094dff07a5c1e4