[INFO] crate mapreduce 0.1.0 is already in cache
[INFO] extracting crate mapreduce 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/mapreduce/0.1.0
[INFO] extracting crate mapreduce 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/mapreduce/0.1.0
[INFO] validating manifest of mapreduce-0.1.0 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 mapreduce-0.1.0 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 mapreduce-0.1.0
[INFO] finished frobbing mapreduce-0.1.0
[INFO] frobbed toml for mapreduce-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/mapreduce/0.1.0/Cargo.toml
[INFO] started frobbing mapreduce-0.1.0
[INFO] finished frobbing mapreduce-0.1.0
[INFO] frobbed toml for mapreduce-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/mapreduce/0.1.0/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 mapreduce-0.1.0 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/mapreduce/0.1.0:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] e42910c884bf0ffe10090c73e1f37c042903fe7a42cb133c1d785114b9d6a32b
[INFO] running `"docker" "start" "-a" "e42910c884bf0ffe10090c73e1f37c042903fe7a42cb133c1d785114b9d6a32b"`
[INFO] [stderr]    Compiling mapreduce v0.1.0 (/opt/crater/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 0.19s
[INFO] running `"docker" "inspect" "e42910c884bf0ffe10090c73e1f37c042903fe7a42cb133c1d785114b9d6a32b"`
[INFO] running `"docker" "rm" "-f" "e42910c884bf0ffe10090c73e1f37c042903fe7a42cb133c1d785114b9d6a32b"`
[INFO] [stdout] e42910c884bf0ffe10090c73e1f37c042903fe7a42cb133c1d785114b9d6a32b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/mapreduce/0.1.0:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 0d43c17fa94f1b9f5f4d09d2f28dbfc799f18ea37e86aa3e4f5802eaae68ef9a
[INFO] running `"docker" "start" "-a" "0d43c17fa94f1b9f5f4d09d2f28dbfc799f18ea37e86aa3e4f5802eaae68ef9a"`
[INFO] [stderr]    Compiling mapreduce v0.1.0 (/opt/crater/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 0.39s
[INFO] running `"docker" "inspect" "0d43c17fa94f1b9f5f4d09d2f28dbfc799f18ea37e86aa3e4f5802eaae68ef9a"`
[INFO] running `"docker" "rm" "-f" "0d43c17fa94f1b9f5f4d09d2f28dbfc799f18ea37e86aa3e4f5802eaae68ef9a"`
[INFO] [stdout] 0d43c17fa94f1b9f5f4d09d2f28dbfc799f18ea37e86aa3e4f5802eaae68ef9a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/mapreduce/0.1.0:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 3b515279b438b93238ee7afd349d21f3624288d9194751333a470618567fbb7b
[INFO] running `"docker" "start" "-a" "3b515279b438b93238ee7afd349d21f3624288d9194751333a470618567fbb7b"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mapreduce-13f45295f1551011
[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" "3b515279b438b93238ee7afd349d21f3624288d9194751333a470618567fbb7b"`
[INFO] running `"docker" "rm" "-f" "3b515279b438b93238ee7afd349d21f3624288d9194751333a470618567fbb7b"`
[INFO] [stdout] 3b515279b438b93238ee7afd349d21f3624288d9194751333a470618567fbb7b