[INFO] fetching crate kekbit 0.3.3...
[INFO] checking kekbit-0.3.3 against master#50e1dc1536264ab71c0850f346b12309477f29f7 for pr-85073
[INFO] extracting crate kekbit 0.3.3 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate kekbit 0.3.3 on toolchain 50e1dc1536264ab71c0850f346b12309477f29f7
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate kekbit 0.3.3
[INFO] finished tweaking crates.io crate kekbit 0.3.3
[INFO] tweaked toml for crates.io crate kekbit 0.3.3 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate kekbit 0.3.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6fdec32965d439403767c11d0e87c49de5224b6140d303141c01d57bf2717fd2
[INFO] running `Command { std: "docker" "start" "-a" "6fdec32965d439403767c11d0e87c49de5224b6140d303141c01d57bf2717fd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6fdec32965d439403767c11d0e87c49de5224b6140d303141c01d57bf2717fd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fdec32965d439403767c11d0e87c49de5224b6140d303141c01d57bf2717fd2", kill_on_drop: false }`
[INFO] [stdout] 6fdec32965d439403767c11d0e87c49de5224b6140d303141c01d57bf2717fd2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1e7d69a2b795230249239a524039d85da25e1ac18b3199f6d0d0045eeef58bf2
[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" "1e7d69a2b795230249239a524039d85da25e1ac18b3199f6d0d0045eeef58bf2", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]     Checking smallvec v1.2.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking assert_matches v1.3.0
[INFO] [stderr]     Checking libc v0.2.67
[INFO] [stderr]     Checking num-traits v0.2.11
[INFO] [stderr]     Checking lock_api v0.3.3
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking crossbeam-queue v0.2.1
[INFO] [stderr]     Checking crossbeam-channel v0.4.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking num-integer v0.1.42
[INFO] [stderr]    Compiling memoffset v0.5.3
[INFO] [stderr]     Checking parking_lot_core v0.7.0
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking nix v0.17.0
[INFO] [stderr]     Checking colored v1.9.2
[INFO] [stderr]     Checking parking_lot v0.10.0
[INFO] [stderr]     Checking crossbeam-deque v0.7.2
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]     Checking kekbit v0.3.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking simple_logger v1.6.0
[INFO] [stdout] error[E0659]: `assert_matches` is ambiguous (glob import vs any other name from outer scope during import/macro resolution)
[INFO] [stdout]    --> src/retry.rs:118:9
[INFO] [stdout]     |
[INFO] [stdout] 118 |         assert_matches!(retry_iter.size_hint(), (0, None));
[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/retry.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |     use assert_matches::*;
[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/retry.rs:119:9
[INFO] [stdout]     |
[INFO] [stdout] 119 |         assert_matches!(retry_iter.next(), Some(ReadResult::Nothing));
[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/retry.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |     use assert_matches::*;
[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/retry.rs:125:13
[INFO] [stdout]     |
[INFO] [stdout] 125 |             assert_matches!(retry_iter.next(), Some(ReadResult::Record(_)));
[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/retry.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |     use assert_matches::*;
[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/retry.rs:127:9
[INFO] [stdout]     |
[INFO] [stdout] 127 |         assert_matches!(retry_iter.next(), Some(ReadResult::Nothing));
[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/retry.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |     use assert_matches::*;
[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/retry.rs:129:9
[INFO] [stdout]     |
[INFO] [stdout] 129 |         assert_matches!(retry_iter.next(), Some(ReadResult::Failed(ReadError::Closed)));
[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/retry.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |     use assert_matches::*;
[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/retry.rs:130:9
[INFO] [stdout]     |
[INFO] [stdout] 130 |         assert_matches!(retry_iter.next(), None);
[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/retry.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |     use assert_matches::*;
[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/retry.rs:131:9
[INFO] [stdout]     |
[INFO] [stdout] 131 |         assert_matches!(retry_iter.size_hint(), (0, Some(0)));
[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/retry.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |     use assert_matches::*;
[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 7 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 `kekbit`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "1e7d69a2b795230249239a524039d85da25e1ac18b3199f6d0d0045eeef58bf2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e7d69a2b795230249239a524039d85da25e1ac18b3199f6d0d0045eeef58bf2", kill_on_drop: false }`
[INFO] [stdout] 1e7d69a2b795230249239a524039d85da25e1ac18b3199f6d0d0045eeef58bf2