[INFO] fetching crate jsonbox 0.2.0...
[INFO] checking jsonbox-0.2.0 against master#3aedcf06b73fc36feeebca3d579e1d2a6c40acc5 for pr-65819
[INFO] extracting crate jsonbox 0.2.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate jsonbox 0.2.0 on toolchain 3aedcf06b73fc36feeebca3d579e1d2a6c40acc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate jsonbox 0.2.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate jsonbox 0.2.0
[INFO] tweaked toml for crates.io crate jsonbox 0.2.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate jsonbox 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 92b48e1b41d6403d2eeeb54a33e8ddb41dbdee277649229bce3cabb4449aeb34
[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" "92b48e1b41d6403d2eeeb54a33e8ddb41dbdee277649229bce3cabb4449aeb34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "92b48e1b41d6403d2eeeb54a33e8ddb41dbdee277649229bce3cabb4449aeb34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92b48e1b41d6403d2eeeb54a33e8ddb41dbdee277649229bce3cabb4449aeb34", kill_on_drop: false }`
[INFO] [stdout] 92b48e1b41d6403d2eeeb54a33e8ddb41dbdee277649229bce3cabb4449aeb34
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 435a0a780a7862aa963974b1487980ef0565539fbfd88bbef9a8105c607beea2
[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" "435a0a780a7862aa963974b1487980ef0565539fbfd88bbef9a8105c607beea2", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
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[INFO] [stderr]    Compiling semver-parser v0.7.0
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[INFO] [stderr]    Compiling cgmath v0.16.1
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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]    --> tests/client.rs:209:5
[INFO] [stdout]     |
[INFO] [stdout] 209 |     assert_matches!(err, Error::General { code, message: _ } if code == 500);
[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]    --> tests/client.rs:2:5
[INFO] [stdout]     |
[INFO] [stdout] 2   | use matches::*;
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout]     = help: consider adding an explicit import of `assert_matches` to disambiguate
[INFO] [stdout]     = help: or use `crate::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]    --> tests/client.rs:262:5
[INFO] [stdout]     |
[INFO] [stdout] 262 |     assert_matches!(err, Error::General { code, message: _ } if code == 400);
[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]    --> tests/client.rs:2:5
[INFO] [stdout]     |
[INFO] [stdout] 2   | use matches::*;
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout]     = help: consider adding an explicit import of `assert_matches` to disambiguate
[INFO] [stdout]     = help: or use `crate::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]    --> tests/client.rs:291:5
[INFO] [stdout]     |
[INFO] [stdout] 291 |     assert_matches!(err, Error::General { code, message: _ } if code == 400);
[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]    --> tests/client.rs:2:5
[INFO] [stdout]     |
[INFO] [stdout] 2   | use matches::*;
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout]     = help: consider adding an explicit import of `assert_matches` to disambiguate
[INFO] [stdout]     = help: or use `crate::assert_matches` to refer to this macro unambiguously
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 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 `jsonbox`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "435a0a780a7862aa963974b1487980ef0565539fbfd88bbef9a8105c607beea2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "435a0a780a7862aa963974b1487980ef0565539fbfd88bbef9a8105c607beea2", kill_on_drop: false }`
[INFO] [stdout] 435a0a780a7862aa963974b1487980ef0565539fbfd88bbef9a8105c607beea2