[INFO] crate mapreduce 0.1.0 is already in cache
[INFO] testing mapreduce-0.1.0 against beta-2019-09-28 for beta-1.39-1
[INFO] extracting crate mapreduce 0.1.0 into work/builds/worker-7/source
[INFO] validating manifest of crates.io crate mapreduce 0.1.0 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 mapreduce 0.1.0
[INFO] finished tweaking crates.io crate mapreduce 0.1.0
[INFO] tweaked toml for crates.io crate mapreduce 0.1.0 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] 218eac65901e652ab3b99b96545d60e4e5fa9101e3b95dce4f4f2a4db324d79d
[INFO] running `"docker" "start" "-a" "218eac65901e652ab3b99b96545d60e4e5fa9101e3b95dce4f4f2a4db324d79d"`
[INFO] [stderr]    Compiling mapreduce v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mapreduce.rs:11:43
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub type MapFunc<T> = fn(item: T, writer: Writer);
[INFO] [stderr]    |                                           ^^^^^^ help: use `dyn`: `dyn Writer`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mapreduce.rs:13:46
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub type MapperFunc<T> = fn(item: T, writer: Writer, cancel: fn(Error));
[INFO] [stderr]    |                                              ^^^^^^ help: use `dyn`: `dyn Writer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mapreduce.rs:14:55
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub type ReducerFunc<T> = fn(pipe: Sender<T>, writer: Writer, cancel: fn(Error));
[INFO] [stderr]    |                                                       ^^^^^^ help: use `dyn`: `dyn Writer`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ch`
[INFO] [stderr]   --> src/mapreduce.rs:27:13
[INFO] [stderr]    |
[INFO] [stderr] 27 | fn drain<T>(ch:Receiver<T>){
[INFO] [stderr]    |             ^^ help: consider prefixing with an underscore: `_ch`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: private type `mapreduce::MapReduceOption` in public interface (error E0446)
[INFO] [stderr]   --> src/mapreduce.rs:16:1
[INFO] [stderr]    |
[INFO] [stderr] 16 | pub type Option = fn(opts: &mut MapReduceOption);
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(private_in_public)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `drain`
[INFO] [stderr]   --> src/mapreduce.rs:27:1
[INFO] [stderr]    |
[INFO] [stderr] 27 | fn drain<T>(ch:Receiver<T>){
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `"docker" "inspect" "218eac65901e652ab3b99b96545d60e4e5fa9101e3b95dce4f4f2a4db324d79d"`
[INFO] running `"docker" "rm" "-f" "218eac65901e652ab3b99b96545d60e4e5fa9101e3b95dce4f4f2a4db324d79d"`
[INFO] [stdout] 218eac65901e652ab3b99b96545d60e4e5fa9101e3b95dce4f4f2a4db324d79d
[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] 65e5d64c904c6d762b331a1eaadb3318d273a5cc0f5ff935070ad58d2ca6d0f5
[INFO] running `"docker" "start" "-a" "65e5d64c904c6d762b331a1eaadb3318d273a5cc0f5ff935070ad58d2ca6d0f5"`
[INFO] [stderr]    Compiling mapreduce v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mapreduce.rs:11:43
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub type MapFunc<T> = fn(item: T, writer: Writer);
[INFO] [stderr]    |                                           ^^^^^^ help: use `dyn`: `dyn Writer`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mapreduce.rs:13:46
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub type MapperFunc<T> = fn(item: T, writer: Writer, cancel: fn(Error));
[INFO] [stderr]    |                                              ^^^^^^ help: use `dyn`: `dyn Writer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mapreduce.rs:14:55
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub type ReducerFunc<T> = fn(pipe: Sender<T>, writer: Writer, cancel: fn(Error));
[INFO] [stderr]    |                                                       ^^^^^^ help: use `dyn`: `dyn Writer`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ch`
[INFO] [stderr]   --> src/mapreduce.rs:27:13
[INFO] [stderr]    |
[INFO] [stderr] 27 | fn drain<T>(ch:Receiver<T>){
[INFO] [stderr]    |             ^^ help: consider prefixing with an underscore: `_ch`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: private type `mapreduce::MapReduceOption` in public interface (error E0446)
[INFO] [stderr]   --> src/mapreduce.rs:16:1
[INFO] [stderr]    |
[INFO] [stderr] 16 | pub type Option = fn(opts: &mut MapReduceOption);
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(private_in_public)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `drain`
[INFO] [stderr]   --> src/mapreduce.rs:27:1
[INFO] [stderr]    |
[INFO] [stderr] 27 | fn drain<T>(ch:Receiver<T>){
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `"docker" "inspect" "65e5d64c904c6d762b331a1eaadb3318d273a5cc0f5ff935070ad58d2ca6d0f5"`
[INFO] running `"docker" "rm" "-f" "65e5d64c904c6d762b331a1eaadb3318d273a5cc0f5ff935070ad58d2ca6d0f5"`
[INFO] [stdout] 65e5d64c904c6d762b331a1eaadb3318d273a5cc0f5ff935070ad58d2ca6d0f5
[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] 68d734ce92eab1ab7e4b227a009df895ab6b76400a965463982abdb4666c360d
[INFO] running `"docker" "start" "-a" "68d734ce92eab1ab7e4b227a009df895ab6b76400a965463982abdb4666c360d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/mapreduce-d217e5fdd21e514b
[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]    Doc-tests mapreduce
[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" "68d734ce92eab1ab7e4b227a009df895ab6b76400a965463982abdb4666c360d"`
[INFO] running `"docker" "rm" "-f" "68d734ce92eab1ab7e4b227a009df895ab6b76400a965463982abdb4666c360d"`
[INFO] [stdout] 68d734ce92eab1ab7e4b227a009df895ab6b76400a965463982abdb4666c360d