[INFO] crate mapreduce 0.1.0 is already in cache
[INFO] testing mapreduce-0.1.0 against 1.38.0 for beta-1.39-1
[INFO] extracting crate mapreduce 0.1.0 into work/builds/worker-4/source
[INFO] validating manifest of crates.io crate mapreduce 0.1.0 on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "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-4/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/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" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] e6600b6a19f1682c00fa78e7f3be0e7bb0eca80c7aef7fe9a0fa4f80b620acd9
[INFO] running `"docker" "start" "-a" "e6600b6a19f1682c00fa78e7f3be0e7bb0eca80c7aef7fe9a0fa4f80b620acd9"`
[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 0.11s
[INFO] running `"docker" "inspect" "e6600b6a19f1682c00fa78e7f3be0e7bb0eca80c7aef7fe9a0fa4f80b620acd9"`
[INFO] running `"docker" "rm" "-f" "e6600b6a19f1682c00fa78e7f3be0e7bb0eca80c7aef7fe9a0fa4f80b620acd9"`
[INFO] [stdout] e6600b6a19f1682c00fa78e7f3be0e7bb0eca80c7aef7fe9a0fa4f80b620acd9
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/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" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] b75b2f1a4b77d2be2becee0abcef4cdca5ca097ef1bf0712bea18fc2a4610e91
[INFO] running `"docker" "start" "-a" "b75b2f1a4b77d2be2becee0abcef4cdca5ca097ef1bf0712bea18fc2a4610e91"`
[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 0.27s
[INFO] running `"docker" "inspect" "b75b2f1a4b77d2be2becee0abcef4cdca5ca097ef1bf0712bea18fc2a4610e91"`
[INFO] running `"docker" "rm" "-f" "b75b2f1a4b77d2be2becee0abcef4cdca5ca097ef1bf0712bea18fc2a4610e91"`
[INFO] [stdout] b75b2f1a4b77d2be2becee0abcef4cdca5ca097ef1bf0712bea18fc2a4610e91
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/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" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] 05535aea38562bdd3b2f1f93367771a5ec86660ba9052f516d98512fc7c38472
[INFO] running `"docker" "start" "-a" "05535aea38562bdd3b2f1f93367771a5ec86660ba9052f516d98512fc7c38472"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/mapreduce-420a6a21aec2e5ce
[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" "05535aea38562bdd3b2f1f93367771a5ec86660ba9052f516d98512fc7c38472"`
[INFO] running `"docker" "rm" "-f" "05535aea38562bdd3b2f1f93367771a5ec86660ba9052f516d98512fc7c38472"`
[INFO] [stdout] 05535aea38562bdd3b2f1f93367771a5ec86660ba9052f516d98512fc7c38472