[INFO] fetching crate pharos 0.5.1...
[INFO] checking pharos-0.5.1 against try#32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d for pr-83312
[INFO] extracting crate pharos 0.5.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate pharos 0.5.1 on toolchain 32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pharos 0.5.1
[INFO] finished tweaking crates.io crate pharos 0.5.1
[INFO] tweaked toml for crates.io crate pharos 0.5.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate pharos 0.5.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wasm-bindgen-test v0.3.20
[INFO] [stderr]   Downloaded wasm-bindgen-test-macro v0.3.20
[INFO] [stderr]   Downloaded async_executors v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 361268e0b05eb077b0fc12487713e36766f606ba03516ea41c171df0dc6b352d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "361268e0b05eb077b0fc12487713e36766f606ba03516ea41c171df0dc6b352d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "361268e0b05eb077b0fc12487713e36766f606ba03516ea41c171df0dc6b352d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "361268e0b05eb077b0fc12487713e36766f606ba03516ea41c171df0dc6b352d", kill_on_drop: false }`
[INFO] [stdout] 361268e0b05eb077b0fc12487713e36766f606ba03516ea41c171df0dc6b352d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5fbfd99375982c90625e87d327294dbc9734c3a2bcf3916575d56c54c6ac1dfb
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5fbfd99375982c90625e87d327294dbc9734c3a2bcf3916575d56c54c6ac1dfb", kill_on_drop: false }`
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[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling pharos v0.5.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling wasm-bindgen-test-macro v0.3.20
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[INFO] [stderr]     Checking futures-executor v0.3.12
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.70
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[INFO] [stdout] error[E0659]: `assert_matches` is ambiguous (glob import vs any other name from outer scope during import/macro resolution)
[INFO] [stdout]    --> src/pharos.rs:521:5
[INFO] [stdout]     |
[INFO] [stdout] 521 |                 assert_matches!( ph.as_mut().poll_ready( &mut cx ), Poll::Ready( Ok(_) ) );
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^ ambiguous name
[INFO] [stdout]     |
[INFO] [stdout]     = note: `assert_matches` could refer to a macro from prelude
[INFO] [stdout] note: `assert_matches` could also refer to the macro imported here
[INFO] [stdout]    --> src/pharos.rs:362:20
[INFO] [stdout]     |
[INFO] [stdout] 362 |     use crate :: { *, import::* };
[INFO] [stdout]     |                       ^^^^^^^^^
[INFO] [stdout]     = help: consider adding an explicit import of `assert_matches` to disambiguate
[INFO] [stdout]     = help: or use `self::assert_matches` to refer to this macro unambiguously
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0659]: `assert_matches` is ambiguous (glob import vs any other name from outer scope during import/macro resolution)
[INFO] [stdout]    --> src/pharos.rs:524:5
[INFO] [stdout]     |
[INFO] [stdout] 524 |                 assert_matches!( ph.as_mut().poll_ready( &mut cx ), Poll::Pending );
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^ ambiguous name
[INFO] [stdout]     |
[INFO] [stdout]     = note: `assert_matches` could refer to a macro from prelude
[INFO] [stdout] note: `assert_matches` could also refer to the macro imported here
[INFO] [stdout]    --> src/pharos.rs:362:20
[INFO] [stdout]     |
[INFO] [stdout] 362 |     use crate :: { *, import::* };
[INFO] [stdout]     |                       ^^^^^^^^^
[INFO] [stdout]     = help: consider adding an explicit import of `assert_matches` to disambiguate
[INFO] [stdout]     = help: or use `self::assert_matches` to refer to this macro unambiguously
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0659]: `assert_matches` is ambiguous (glob import vs any other name from outer scope during import/macro resolution)
[INFO] [stdout]    --> src/pharos.rs:528:5
[INFO] [stdout]     |
[INFO] [stdout] 528 |                 assert_matches!( ph.as_mut().poll_ready( &mut cx ), Poll::Ready( Ok(_) ) );
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^ ambiguous name
[INFO] [stdout]     |
[INFO] [stdout]     = note: `assert_matches` could refer to a macro from prelude
[INFO] [stdout] note: `assert_matches` could also refer to the macro imported here
[INFO] [stdout]    --> src/pharos.rs:362:20
[INFO] [stdout]     |
[INFO] [stdout] 362 |     use crate :: { *, import::* };
[INFO] [stdout]     |                       ^^^^^^^^^
[INFO] [stdout]     = help: consider adding an explicit import of `assert_matches` to disambiguate
[INFO] [stdout]     = help: or use `self::assert_matches` to refer to this macro unambiguously
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0659]: `assert_matches` is ambiguous (glob import vs any other name from outer scope during import/macro resolution)
[INFO] [stdout]    --> src/pharos.rs:556:4
[INFO] [stdout]     |
[INFO] [stdout] 556 |             assert_matches!( ph.as_mut().poll_ready( &mut cx ), Poll::Ready( Ok(_) ) );
[INFO] [stdout]     |             ^^^^^^^^^^^^^^ ambiguous name
[INFO] [stdout]     |
[INFO] [stdout]     = note: `assert_matches` could refer to a macro from prelude
[INFO] [stdout] note: `assert_matches` could also refer to the macro imported here
[INFO] [stdout]    --> src/pharos.rs:362:20
[INFO] [stdout]     |
[INFO] [stdout] 362 |     use crate :: { *, import::* };
[INFO] [stdout]     |                       ^^^^^^^^^
[INFO] [stdout]     = help: consider adding an explicit import of `assert_matches` to disambiguate
[INFO] [stdout]     = help: or use `self::assert_matches` to refer to this macro unambiguously
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0659]: `assert_matches` is ambiguous (glob import vs any other name from outer scope during import/macro resolution)
[INFO] [stdout]    --> src/pharos.rs:579:5
[INFO] [stdout]     |
[INFO] [stdout] 579 |                 assert_matches!( ph.as_mut().poll_close( cx ), Poll::Ready(Ok(())) );
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^ ambiguous name
[INFO] [stdout]     |
[INFO] [stdout]     = note: `assert_matches` could refer to a macro from prelude
[INFO] [stdout] note: `assert_matches` could also refer to the macro imported here
[INFO] [stdout]    --> src/pharos.rs:362:20
[INFO] [stdout]     |
[INFO] [stdout] 362 |     use crate :: { *, import::* };
[INFO] [stdout]     |                       ^^^^^^^^^
[INFO] [stdout]     = help: consider adding an explicit import of `assert_matches` to disambiguate
[INFO] [stdout]     = help: or use `self::assert_matches` to refer to this macro unambiguously
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0659]: `assert_matches` is ambiguous (glob import vs any other name from outer scope during import/macro resolution)
[INFO] [stdout]    --> src/pharos.rs:583:5
[INFO] [stdout]     |
[INFO] [stdout] 583 |                 assert_matches!( res, Poll::Ready( Err(_) ) );
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^ ambiguous name
[INFO] [stdout]     |
[INFO] [stdout]     = note: `assert_matches` could refer to a macro from prelude
[INFO] [stdout] note: `assert_matches` could also refer to the macro imported here
[INFO] [stdout]    --> src/pharos.rs:362:20
[INFO] [stdout]     |
[INFO] [stdout] 362 |     use crate :: { *, import::* };
[INFO] [stdout]     |                       ^^^^^^^^^
[INFO] [stdout]     = help: consider adding an explicit import of `assert_matches` to disambiguate
[INFO] [stdout]     = help: or use `self::assert_matches` to refer to this macro unambiguously
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0659]: `assert_matches` is ambiguous (glob import vs any other name from outer scope during import/macro resolution)
[INFO] [stdout]    --> src/pharos.rs:614:4
[INFO] [stdout]     |
[INFO] [stdout] 614 |             assert_matches!( ph.as_mut().poll_ready( &mut cx ), Poll::Ready( Ok(_) ) );
[INFO] [stdout]     |             ^^^^^^^^^^^^^^ ambiguous name
[INFO] [stdout]     |
[INFO] [stdout]     = note: `assert_matches` could refer to a macro from prelude
[INFO] [stdout] note: `assert_matches` could also refer to the macro imported here
[INFO] [stdout]    --> src/pharos.rs:362:20
[INFO] [stdout]     |
[INFO] [stdout] 362 |     use crate :: { *, import::* };
[INFO] [stdout]     |                       ^^^^^^^^^
[INFO] [stdout]     = help: consider adding an explicit import of `assert_matches` to disambiguate
[INFO] [stdout]     = help: or use `self::assert_matches` to refer to this macro unambiguously
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0659]: `assert_matches` is ambiguous (glob import vs any other name from outer scope during import/macro resolution)
[INFO] [stdout]    --> src/pharos.rs:644:4
[INFO] [stdout]     |
[INFO] [stdout] 644 |             assert_matches!( ph.as_mut().poll_flush( &mut cx ), Poll::Ready( Ok(_) ) );
[INFO] [stdout]     |             ^^^^^^^^^^^^^^ ambiguous name
[INFO] [stdout]     |
[INFO] [stdout]     = note: `assert_matches` could refer to a macro from prelude
[INFO] [stdout] note: `assert_matches` could also refer to the macro imported here
[INFO] [stdout]    --> src/pharos.rs:362:20
[INFO] [stdout]     |
[INFO] [stdout] 362 |     use crate :: { *, import::* };
[INFO] [stdout]     |                       ^^^^^^^^^
[INFO] [stdout]     = help: consider adding an explicit import of `assert_matches` to disambiguate
[INFO] [stdout]     = help: or use `self::assert_matches` to refer to this macro unambiguously
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 8 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0659`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pharos`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "5fbfd99375982c90625e87d327294dbc9734c3a2bcf3916575d56c54c6ac1dfb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fbfd99375982c90625e87d327294dbc9734c3a2bcf3916575d56c54c6ac1dfb", kill_on_drop: false }`
[INFO] [stdout] 5fbfd99375982c90625e87d327294dbc9734c3a2bcf3916575d56c54c6ac1dfb