[INFO] crate async-await 0.2.1 is already in cache
[INFO] checking async-await-0.2.1 against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] extracting crate async-await 0.2.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate async-await 0.2.1 on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate async-await 0.2.1
[INFO] finished tweaking crates.io crate async-await 0.2.1
[INFO] tweaked toml for crates.io crate async-await 0.2.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 6d563cc9f7f6b71069d3988207192b4451ac3bcfe6c95b495bd4b19778e7f993
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "6d563cc9f7f6b71069d3988207192b4451ac3bcfe6c95b495bd4b19778e7f993"`
[INFO] [stderr]     Checking async-await v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]   --> src/lib.rs:47:49
[INFO] [stderr]    |
[INFO] [stderr] 47 |     let transformation = f1.map(|v| v * 2).join((f2.map(|v| v + 5)))
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'futures::Complete::<T>::complete': renamed to `send`
[INFO] [stderr]   --> src/lib.rs:11:16
[INFO] [stderr]    |
[INFO] [stderr] 11 |             tx.complete($e);
[INFO] [stderr]    |                ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 39 |     let a = async!{42};
[INFO] [stderr]    |             ---------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'futures::Complete::<T>::complete': renamed to `send`
[INFO] [stderr]   --> src/lib.rs:11:16
[INFO] [stderr]    |
[INFO] [stderr] 11 |             tx.complete($e);
[INFO] [stderr]    |                ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 45 |     let f1 = async!{42};
[INFO] [stderr]    |              ---------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'futures::Complete::<T>::complete': renamed to `send`
[INFO] [stderr]   --> src/lib.rs:11:16
[INFO] [stderr]    |
[INFO] [stderr] 11 |             tx.complete($e);
[INFO] [stderr]    |                ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 46 |     let f2 = async!{18};
[INFO] [stderr]    |              ---------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'futures::Complete::<T>::complete': renamed to `send`
[INFO] [stderr]   --> src/lib.rs:11:16
[INFO] [stderr]    |
[INFO] [stderr] 11 |               tx.complete($e);
[INFO] [stderr]    |                  ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 54 |       let f1 = async!{{
[INFO] [stderr]    |  ______________-
[INFO] [stderr] 55 | |         let f1 = async!{42};
[INFO] [stderr] 56 | |         await!{f1.map(|v| v * 2)}
[INFO] [stderr] 57 | |     }};
[INFO] [stderr]    | |______- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'futures::Complete::<T>::complete': renamed to `send`
[INFO] [stderr]   --> src/lib.rs:11:16
[INFO] [stderr]    |
[INFO] [stderr] 11 |             tx.complete($e);
[INFO] [stderr]    |                ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 55 |         let f1 = async!{42};
[INFO] [stderr]    |                  ---------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'futures::Complete::<T>::complete': renamed to `send`
[INFO] [stderr]   --> src/lib.rs:11:16
[INFO] [stderr]    |
[INFO] [stderr] 11 |             tx.complete($e);
[INFO] [stderr]    |                ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 63 |     let a = async!{42};
[INFO] [stderr]    |             ---------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'futures::Complete::<T>::complete': renamed to `send`
[INFO] [stderr]   --> src/lib.rs:11:16
[INFO] [stderr]    |
[INFO] [stderr] 11 |             tx.complete($e);
[INFO] [stderr]    |                ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 69 |     let a = async!{panic!("i")};
[INFO] [stderr]    |             ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable call
[INFO] [stderr]   --> src/lib.rs:11:16
[INFO] [stderr]    |
[INFO] [stderr] 11 |             tx.complete($e);
[INFO] [stderr]    |                ^^^^^^^^ unreachable call
[INFO] [stderr] ...
[INFO] [stderr] 69 |     let a = async!{panic!("i")};
[INFO] [stderr]    |             -------------------
[INFO] [stderr]    |             |      |
[INFO] [stderr]    |             |      any code following this expression is unreachable
[INFO] [stderr]    |             in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `"docker" "inspect" "6d563cc9f7f6b71069d3988207192b4451ac3bcfe6c95b495bd4b19778e7f993"`
[INFO] running `"docker" "rm" "-f" "6d563cc9f7f6b71069d3988207192b4451ac3bcfe6c95b495bd4b19778e7f993"`
[INFO] [stdout] 6d563cc9f7f6b71069d3988207192b4451ac3bcfe6c95b495bd4b19778e7f993