[INFO] crate buffer 0.1.8 is already in cache
[INFO] testing buffer-0.1.8 against beta-2019-09-28 for beta-1.39-1
[INFO] extracting crate buffer 0.1.8 into work/builds/worker-7/source
[INFO] validating manifest of crates.io crate buffer 0.1.8 on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate buffer 0.1.8
[INFO] finished tweaking crates.io crate buffer 0.1.8
[INFO] tweaked toml for crates.io crate buffer 0.1.8 written to work/builds/worker-7/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] d5fedcecf03cd2832659b8f3a2721fc325d141050eb94425ab46506ff70d7c2c
[INFO] running `"docker" "start" "-a" "d5fedcecf03cd2832659b8f3a2721fc325d141050eb94425ab46506ff70d7c2c"`
[INFO] [stderr]    Compiling mac v0.0.2
[INFO] [stderr]    Compiling buffer v0.1.8 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/traits.rs:15:16
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let read = try!(reader.read(buf.uninitialized_mut()));
[INFO] [stderr]    |                ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.72s
[INFO] running `"docker" "inspect" "d5fedcecf03cd2832659b8f3a2721fc325d141050eb94425ab46506ff70d7c2c"`
[INFO] running `"docker" "rm" "-f" "d5fedcecf03cd2832659b8f3a2721fc325d141050eb94425ab46506ff70d7c2c"`
[INFO] [stdout] d5fedcecf03cd2832659b8f3a2721fc325d141050eb94425ab46506ff70d7c2c
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+beta-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] 40de80fbcd872ebe1db8bf9b57980ca8d6064b97ece04a0ba82eea0cc25ded99
[INFO] running `"docker" "start" "-a" "40de80fbcd872ebe1db8bf9b57980ca8d6064b97ece04a0ba82eea0cc25ded99"`
[INFO] [stderr]    Compiling buffer v0.1.8 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/traits.rs:15:16
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let read = try!(reader.read(buf.uninitialized_mut()));
[INFO] [stderr]    |                ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.11s
[INFO] running `"docker" "inspect" "40de80fbcd872ebe1db8bf9b57980ca8d6064b97ece04a0ba82eea0cc25ded99"`
[INFO] running `"docker" "rm" "-f" "40de80fbcd872ebe1db8bf9b57980ca8d6064b97ece04a0ba82eea0cc25ded99"`
[INFO] [stdout] 40de80fbcd872ebe1db8bf9b57980ca8d6064b97ece04a0ba82eea0cc25ded99
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+beta-2019-09-28" "test" "--frozen"`
[INFO] [stdout] ee839e417a19e103d002eda952ddf68402aa71a730248ae3b56809e46e5e51f9
[INFO] running `"docker" "start" "-a" "ee839e417a19e103d002eda952ddf68402aa71a730248ae3b56809e46e5e51f9"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/buffer-e00b3266a087d6e5
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test impls::buffer_ref::test::buffer_ref_remaining ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests buffer
[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" "ee839e417a19e103d002eda952ddf68402aa71a730248ae3b56809e46e5e51f9"`
[INFO] running `"docker" "rm" "-f" "ee839e417a19e103d002eda952ddf68402aa71a730248ae3b56809e46e5e51f9"`
[INFO] [stdout] ee839e417a19e103d002eda952ddf68402aa71a730248ae3b56809e46e5e51f9