[INFO] crate futures-poll-log 1.0.1 is already in cache
[INFO] extracting crate futures-poll-log 1.0.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/futures-poll-log/1.0.1
[INFO] extracting crate futures-poll-log 1.0.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/futures-poll-log/1.0.1
[INFO] validating manifest of futures-poll-log-1.0.1 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 futures-poll-log-1.0.1 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 futures-poll-log-1.0.1
[INFO] finished frobbing futures-poll-log-1.0.1
[INFO] frobbed toml for futures-poll-log-1.0.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/futures-poll-log/1.0.1/Cargo.toml
[INFO] started frobbing futures-poll-log-1.0.1
[INFO] finished frobbing futures-poll-log-1.0.1
[INFO] frobbed toml for futures-poll-log-1.0.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/futures-poll-log/1.0.1/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 futures-poll-log-1.0.1 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/futures-poll-log/1.0.1:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] a11991d113eb7959c756212718aab5e0feb138e2695364ce3e2436a4d520d93d
[INFO] running `"docker" "start" "-a" "a11991d113eb7959c756212718aab5e0feb138e2695364ce3e2436a4d520d93d"`
[INFO] [stderr]    Compiling futures-poll-log v1.0.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `"docker" "inspect" "a11991d113eb7959c756212718aab5e0feb138e2695364ce3e2436a4d520d93d"`
[INFO] running `"docker" "rm" "-f" "a11991d113eb7959c756212718aab5e0feb138e2695364ce3e2436a4d520d93d"`
[INFO] [stdout] a11991d113eb7959c756212718aab5e0feb138e2695364ce3e2436a4d520d93d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/futures-poll-log/1.0.1:/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 01b03ac4b2a4df2e4b9018f40f61763fc9b4c204467a747fda75d6083785c167
[INFO] running `"docker" "start" "-a" "01b03ac4b2a4df2e4b9018f40f61763fc9b4c204467a747fda75d6083785c167"`
[INFO] [stderr]    Compiling futures-poll-log v1.0.1 (/opt/crater/workdir)
[INFO] [stderr] error[E0034]: multiple applicable items in scope
[INFO] [stderr]   --> examples/simple_future.rs:18:10
[INFO] [stderr]    |
[INFO] [stderr] 18 |         .inspect("immeditate future")
[INFO] [stderr]    |          ^^^^^^^ multiple `inspect` found
[INFO] [stderr]    |
[INFO] [stderr]    = note: candidate #1 is defined in an impl of the trait `futures::Future` for the type `futures::Done<_, _>`
[INFO] [stderr]    = help: to disambiguate the method call, write `futures::Future::inspect(futures::future::ok(3), "immeditate future")` instead
[INFO] [stderr]    = note: candidate #2 is defined in an impl of the trait `futures_poll_log::LoggingExt` for the type `_`
[INFO] [stderr]    = help: to disambiguate the method call, write `futures_poll_log::LoggingExt::inspect(futures::future::ok(3), "immeditate future")` instead
[INFO] [stderr] note: candidate #3 is defined in the trait `std::iter::Iterator`
[INFO] [stderr]    = help: to disambiguate the method call, write `std::iter::Iterator::inspect(futures::future::ok(3), "immeditate future")` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `futures_poll_log::LoggingExt`
[INFO] [stderr]  --> examples/simple_future.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use futures_poll_log::LoggingExt;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `futures::Future`
[INFO] [stderr]  --> examples/simple_future.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use futures::Future;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0034`.
[INFO] [stderr] error: Could not compile `futures-poll-log`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "01b03ac4b2a4df2e4b9018f40f61763fc9b4c204467a747fda75d6083785c167"`
[INFO] running `"docker" "rm" "-f" "01b03ac4b2a4df2e4b9018f40f61763fc9b4c204467a747fda75d6083785c167"`
[INFO] [stdout] 01b03ac4b2a4df2e4b9018f40f61763fc9b4c204467a747fda75d6083785c167