[INFO] crate tokio-stdin 0.1.2 is already in cache
[INFO] extracting crate tokio-stdin 0.1.2 into work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/reg/tokio-stdin/0.1.2
[INFO] extracting crate tokio-stdin 0.1.2 into work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/reg/tokio-stdin/0.1.2
[INFO] validating manifest of tokio-stdin-0.1.2 on toolchain master#452087b4bf18cece2d52d7cd8c9147195e5404bf
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of tokio-stdin-0.1.2 on toolchain try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing tokio-stdin-0.1.2
[INFO] finished frobbing tokio-stdin-0.1.2
[INFO] frobbed toml for tokio-stdin-0.1.2 written to work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/reg/tokio-stdin/0.1.2/Cargo.toml
[INFO] started frobbing tokio-stdin-0.1.2
[INFO] finished frobbing tokio-stdin-0.1.2
[INFO] frobbed toml for tokio-stdin-0.1.2 written to work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/reg/tokio-stdin/0.1.2/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking tokio-stdin-0.1.2 against master#452087b4bf18cece2d52d7cd8c9147195e5404bf for pr-63247
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63247/worker-0/master#452087b4bf18cece2d52d7cd8c9147195e5404bf:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/reg/tokio-stdin/0.1.2:/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=forbid" "-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" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] d649dbb7a846ff382fadf4ec726feedc9f479983c8c51355726a6453b001f9a8
[INFO] running `"docker" "start" "-a" "d649dbb7a846ff382fadf4ec726feedc9f479983c8c51355726a6453b001f9a8"`
[INFO] [stderr]     Checking tokio-stdin v0.1.2 (/opt/crater/workdir)
[INFO] [stderr] error: unused `futures::stream::MapErr` in tuple element 0 that must be used
[INFO] [stderr]   --> src/lib.rs:55:9
[INFO] [stderr]    |
[INFO] [stderr] 55 | /         iter(stdin_lock.bytes())
[INFO] [stderr] 56 | |             .map_err(Error::Stdin)
[INFO] [stderr] 57 | |             .forward(stdin_sink)
[INFO] [stderr] 58 | |             .wait()
[INFO] [stderr] 59 | |             .unwrap();
[INFO] [stderr]    | |______________________^
[INFO] [stderr]    |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]   --> src/lib.rs:30:9
[INFO] [stderr]    |
[INFO] [stderr] 30 | #![deny(warnings)]
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr]    = note: `#[deny(unused_must_use)]` implied by `#[deny(warnings)]`
[INFO] [stderr]    = note: streams do nothing unless polled
[INFO] [stderr] 
[INFO] [stderr] error: unused `futures::sink::SinkMapErr` in tuple element 1 that must be used
[INFO] [stderr]   --> src/lib.rs:55:9
[INFO] [stderr]    |
[INFO] [stderr] 55 | /         iter(stdin_lock.bytes())
[INFO] [stderr] 56 | |             .map_err(Error::Stdin)
[INFO] [stderr] 57 | |             .forward(stdin_sink)
[INFO] [stderr] 58 | |             .wait()
[INFO] [stderr] 59 | |             .unwrap();
[INFO] [stderr]    | |______________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: sinks do nothing unless polled
[INFO] [stderr] 
[INFO] [stderr] error: unused `futures::stream::MapErr` in tuple element 0 that must be used
[INFO] [stderr]   --> src/lib.rs:73:9
[INFO] [stderr]    |
[INFO] [stderr] 73 | /         iter(stdin_lock.bytes())
[INFO] [stderr] 74 | |             .map_err(Error::Stdin)
[INFO] [stderr] 75 | |             .forward(stdin_sink)
[INFO] [stderr] 76 | |             .wait()
[INFO] [stderr] 77 | |             .unwrap();
[INFO] [stderr]    | |______________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: streams do nothing unless polled
[INFO] [stderr] 
[INFO] [stderr] error: unused `futures::sink::SinkMapErr` in tuple element 1 that must be used
[INFO] [stderr]   --> src/lib.rs:73:9
[INFO] [stderr]    |
[INFO] [stderr] 73 | /         iter(stdin_lock.bytes())
[INFO] [stderr] 74 | |             .map_err(Error::Stdin)
[INFO] [stderr] 75 | |             .forward(stdin_sink)
[INFO] [stderr] 76 | |             .wait()
[INFO] [stderr] 77 | |             .unwrap();
[INFO] [stderr]    | |______________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: sinks do nothing unless polled
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `tokio-stdin`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: unused `futures::stream::MapErr` in tuple element 0 that must be used
[INFO] [stderr]   --> src/lib.rs:55:9
[INFO] [stderr]    |
[INFO] [stderr] 55 | /         iter(stdin_lock.bytes())
[INFO] [stderr] 56 | |             .map_err(Error::Stdin)
[INFO] [stderr] 57 | |             .forward(stdin_sink)
[INFO] [stderr] 58 | |             .wait()
[INFO] [stderr] 59 | |             .unwrap();
[INFO] [stderr]    | |______________________^
[INFO] [stderr]    |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]   --> src/lib.rs:30:9
[INFO] [stderr]    |
[INFO] [stderr] 30 | #![deny(warnings)]
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr]    = note: `#[deny(unused_must_use)]` implied by `#[deny(warnings)]`
[INFO] [stderr]    = note: streams do nothing unless polled
[INFO] [stderr] 
[INFO] [stderr] error: unused `futures::sink::SinkMapErr` in tuple element 1 that must be used
[INFO] [stderr]   --> src/lib.rs:55:9
[INFO] [stderr]    |
[INFO] [stderr] 55 | /         iter(stdin_lock.bytes())
[INFO] [stderr] 56 | |             .map_err(Error::Stdin)
[INFO] [stderr] 57 | |             .forward(stdin_sink)
[INFO] [stderr] 58 | |             .wait()
[INFO] [stderr] 59 | |             .unwrap();
[INFO] [stderr]    | |______________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: sinks do nothing unless polled
[INFO] [stderr] 
[INFO] [stderr] error: unused `futures::stream::MapErr` in tuple element 0 that must be used
[INFO] [stderr]   --> src/lib.rs:73:9
[INFO] [stderr]    |
[INFO] [stderr] 73 | /         iter(stdin_lock.bytes())
[INFO] [stderr] 74 | |             .map_err(Error::Stdin)
[INFO] [stderr] 75 | |             .forward(stdin_sink)
[INFO] [stderr] 76 | |             .wait()
[INFO] [stderr] 77 | |             .unwrap();
[INFO] [stderr]    | |______________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: streams do nothing unless polled
[INFO] [stderr] 
[INFO] [stderr] error: unused `futures::sink::SinkMapErr` in tuple element 1 that must be used
[INFO] [stderr]   --> src/lib.rs:73:9
[INFO] [stderr]    |
[INFO] [stderr] 73 | /         iter(stdin_lock.bytes())
[INFO] [stderr] 74 | |             .map_err(Error::Stdin)
[INFO] [stderr] 75 | |             .forward(stdin_sink)
[INFO] [stderr] 76 | |             .wait()
[INFO] [stderr] 77 | |             .unwrap();
[INFO] [stderr]    | |______________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: sinks do nothing unless polled
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `tokio-stdin`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "d649dbb7a846ff382fadf4ec726feedc9f479983c8c51355726a6453b001f9a8"`
[INFO] running `"docker" "rm" "-f" "d649dbb7a846ff382fadf4ec726feedc9f479983c8c51355726a6453b001f9a8"`
[INFO] [stdout] d649dbb7a846ff382fadf4ec726feedc9f479983c8c51355726a6453b001f9a8