[INFO] crate futures-await 0.1.1 is already in cache
[INFO] extracting crate futures-await 0.1.1 into work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/reg/futures-await/0.1.1
[INFO] extracting crate futures-await 0.1.1 into work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/reg/futures-await/0.1.1
[INFO] validating manifest of futures-await-0.1.1 on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of futures-await-0.1.1 on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing futures-await-0.1.1
[INFO] finished frobbing futures-await-0.1.1
[INFO] frobbed toml for futures-await-0.1.1 written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/reg/futures-await/0.1.1/Cargo.toml
[INFO] started frobbing futures-await-0.1.1
[INFO] finished frobbing futures-await-0.1.1
[INFO] frobbed toml for futures-await-0.1.1 written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/reg/futures-await/0.1.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking futures-await-0.1.1 against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-4/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/reg/futures-await/0.1.1:/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=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" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4e9b9c315baa38506358d18bb1eac55e30a8226e229726bbeae77fb727059aa1
[INFO] running `"docker" "start" "-a" "4e9b9c315baa38506358d18bb1eac55e30a8226e229726bbeae77fb727059aa1"`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking futures-await-await-macro v0.1.1
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling futures-await-async-macro v0.1.4
[INFO] [stderr]     Checking futures-await v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] error: ambiguous associated item
[INFO] [stderr]   --> src/lib.rs:76:40
[INFO] [stderr]    |
[INFO] [stderr] 76 |         fn into_result(self) -> Result<Self::Ok, Self::Err> { self }
[INFO] [stderr]    |                                        ^^^^^^^^ help: use fully-qualified syntax: `<std::result::Result<T, E> as IsResult>::Ok`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[deny(ambiguous_associated_items)]` 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 #57644 <https://github.com/rust-lang/rust/issues/57644>
[INFO] [stderr] note: `Ok` could refer to variant defined here
[INFO] [stderr] note: `Ok` could also refer to associated type defined here
[INFO] [stderr]   --> src/lib.rs:67:9
[INFO] [stderr]    |
[INFO] [stderr] 67 |         type Ok;
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: ambiguous associated item
[INFO] [stderr]   --> src/lib.rs:76:50
[INFO] [stderr]    |
[INFO] [stderr] 76 |         fn into_result(self) -> Result<Self::Ok, Self::Err> { self }
[INFO] [stderr]    |                                                  ^^^^^^^^^ help: use fully-qualified syntax: `<std::result::Result<T, E> as IsResult>::Err`
[INFO] [stderr]    |
[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 #57644 <https://github.com/rust-lang/rust/issues/57644>
[INFO] [stderr] note: `Err` could refer to variant defined here
[INFO] [stderr] note: `Err` could also refer to associated type defined here
[INFO] [stderr]   --> src/lib.rs:68:9
[INFO] [stderr]    |
[INFO] [stderr] 68 |         type Err;
[INFO] [stderr]    |         ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `futures-await`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: ambiguous associated item
[INFO] [stderr]   --> src/lib.rs:76:40
[INFO] [stderr]    |
[INFO] [stderr] 76 |         fn into_result(self) -> Result<Self::Ok, Self::Err> { self }
[INFO] [stderr]    |                                        ^^^^^^^^ help: use fully-qualified syntax: `<std::result::Result<T, E> as IsResult>::Ok`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[deny(ambiguous_associated_items)]` 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 #57644 <https://github.com/rust-lang/rust/issues/57644>
[INFO] [stderr] note: `Ok` could refer to variant defined here
[INFO] [stderr] note: `Ok` could also refer to associated type defined here
[INFO] [stderr]   --> src/lib.rs:67:9
[INFO] [stderr]    |
[INFO] [stderr] 67 |         type Ok;
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: ambiguous associated item
[INFO] [stderr]   --> src/lib.rs:76:50
[INFO] [stderr]    |
[INFO] [stderr] 76 |         fn into_result(self) -> Result<Self::Ok, Self::Err> { self }
[INFO] [stderr]    |                                                  ^^^^^^^^^ help: use fully-qualified syntax: `<std::result::Result<T, E> as IsResult>::Err`
[INFO] [stderr]    |
[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 #57644 <https://github.com/rust-lang/rust/issues/57644>
[INFO] [stderr] note: `Err` could refer to variant defined here
[INFO] [stderr] note: `Err` could also refer to associated type defined here
[INFO] [stderr]   --> src/lib.rs:68:9
[INFO] [stderr]    |
[INFO] [stderr] 68 |         type Err;
[INFO] [stderr]    |         ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `futures-await`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "4e9b9c315baa38506358d18bb1eac55e30a8226e229726bbeae77fb727059aa1"`
[INFO] running `"docker" "rm" "-f" "4e9b9c315baa38506358d18bb1eac55e30a8226e229726bbeae77fb727059aa1"`
[INFO] [stdout] 4e9b9c315baa38506358d18bb1eac55e30a8226e229726bbeae77fb727059aa1