[INFO] updating cached repository skade/futures-poll-log
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/skade/futures-poll-log
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/skade/futures-poll-log" "work/ex/beta-1.37-6/sources/1.36.0/gh/skade/futures-poll-log"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/skade/futures-poll-log'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/skade/futures-poll-log" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/skade/futures-poll-log"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/skade/futures-poll-log'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 700ba869d3c3baf3ab60e4b723c62eb9933822ec
[INFO] sha for GitHub repo skade/futures-poll-log: 700ba869d3c3baf3ab60e4b723c62eb9933822ec
[INFO] validating manifest of skade/futures-poll-log on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of skade/futures-poll-log on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing skade/futures-poll-log
[INFO] finished frobbing skade/futures-poll-log
[INFO] frobbed toml for skade/futures-poll-log written to work/ex/beta-1.37-6/sources/1.36.0/gh/skade/futures-poll-log/Cargo.toml
[INFO] started frobbing skade/futures-poll-log
[INFO] finished frobbing skade/futures-poll-log
[INFO] frobbed toml for skade/futures-poll-log written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/skade/futures-poll-log/Cargo.toml
[INFO] crate skade/futures-poll-log already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/skade/futures-poll-log/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing skade/futures-poll-log against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/skade/futures-poll-log:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 2891a314ff73a8ff2a8aaf2c9ce9ebf787c33a44f5981d6d56c42c824d6f7a12
[INFO] running `"docker" "start" "-a" "2891a314ff73a8ff2a8aaf2c9ce9ebf787c33a44f5981d6d56c42c824d6f7a12"`
[INFO] [stderr]    Compiling futures-poll-log v1.0.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `"docker" "inspect" "2891a314ff73a8ff2a8aaf2c9ce9ebf787c33a44f5981d6d56c42c824d6f7a12"`
[INFO] running `"docker" "rm" "-f" "2891a314ff73a8ff2a8aaf2c9ce9ebf787c33a44f5981d6d56c42c824d6f7a12"`
[INFO] [stdout] 2891a314ff73a8ff2a8aaf2c9ce9ebf787c33a44f5981d6d56c42c824d6f7a12
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/skade/futures-poll-log:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] bfbf52ea5d5c31dcf621fd0945061506013ddc21eef687040859192bcd18f687
[INFO] running `"docker" "start" "-a" "bfbf52ea5d5c31dcf621fd0945061506013ddc21eef687040859192bcd18f687"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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]    = note: candidate #2 is defined in an impl of the trait `futures_poll_log::LoggingExt` for the type `_`
[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" "bfbf52ea5d5c31dcf621fd0945061506013ddc21eef687040859192bcd18f687"`
[INFO] running `"docker" "rm" "-f" "bfbf52ea5d5c31dcf621fd0945061506013ddc21eef687040859192bcd18f687"`
[INFO] [stdout] bfbf52ea5d5c31dcf621fd0945061506013ddc21eef687040859192bcd18f687