[INFO] fetching crate futures-await 0.1.1...
[INFO] checking futures-await-0.1.1 against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] extracting crate futures-await 0.1.1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate futures-await 0.1.1 on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate futures-await 0.1.1
[INFO] finished tweaking crates.io crate futures-await 0.1.1
[INFO] tweaked toml for crates.io crate futures-await 0.1.1 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-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" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 16507732cb2d257b9127b6b5f0b2d857b7fe2a6dc7b6f23469dd84a812e36158
[INFO] running `"docker" "start" "-a" "16507732cb2d257b9127b6b5f0b2d857b7fe2a6dc7b6f23469dd84a812e36158"`
[INFO] [stderr]     Checking futures-await-await-macro v0.1.1
[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/rustwide/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" "16507732cb2d257b9127b6b5f0b2d857b7fe2a6dc7b6f23469dd84a812e36158"`
[INFO] running `"docker" "rm" "-f" "16507732cb2d257b9127b6b5f0b2d857b7fe2a6dc7b6f23469dd84a812e36158"`
[INFO] [stdout] 16507732cb2d257b9127b6b5f0b2d857b7fe2a6dc7b6f23469dd84a812e36158