[INFO] fetching crate fuzzcheck_json_string_generator 0.1.0...
[INFO] testing fuzzcheck_json_string_generator-0.1.0 against 1.75.0 for beta-1.76-1
[INFO] extracting crate fuzzcheck_json_string_generator 0.1.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate fuzzcheck_json_string_generator 0.1.0 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fuzzcheck_json_string_generator 0.1.0
[INFO] finished tweaking crates.io crate fuzzcheck_json_string_generator 0.1.0
[INFO] tweaked toml for crates.io crate fuzzcheck_json_string_generator 0.1.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fuzzcheck_common v0.12.0
[INFO] [stderr]   Downloaded fuzzcheck_mutators_derive v0.12.0
[INFO] [stderr]   Downloaded object v0.27.1
[INFO] [stderr]   Downloaded nu-ansi-term v0.39.0
[INFO] [stderr]   Downloaded fuzzcheck v0.12.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0cf79d6dc3b18f95d2207d4fdc3c951d9792387bc75216183ab81d8849a35c2b
[INFO] running `Command { std: "docker" "start" "-a" "0cf79d6dc3b18f95d2207d4fdc3c951d9792387bc75216183ab81d8849a35c2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0cf79d6dc3b18f95d2207d4fdc3c951d9792387bc75216183ab81d8849a35c2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0cf79d6dc3b18f95d2207d4fdc3c951d9792387bc75216183ab81d8849a35c2b", kill_on_drop: false }`
[INFO] [stdout] 0cf79d6dc3b18f95d2207d4fdc3c951d9792387bc75216183ab81d8849a35c2b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 617ccf4f768af289f70e8eca38de35f68c707aef725350844b79cd8172231af6
[INFO] running `Command { std: "docker" "start" "-a" "617ccf4f768af289f70e8eca38de35f68c707aef725350844b79cd8172231af6", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.7.1
[INFO] [stderr]    Compiling ahash v0.7.7
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling overload v0.1.1
[INFO] [stderr]    Compiling md5 v0.7.0
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]    Compiling fastrand v1.9.0
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]    Compiling getrandom v0.2.11
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling fuzzcheck_mutators_derive v0.12.0
[INFO] [stderr]    Compiling serde v1.0.194
[INFO] [stderr]    Compiling nu-ansi-term v0.39.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_mutators_derive-0.12.0/src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(let_chains)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_mutators_derive-0.12.0/src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(stmt_expr_attributes)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling fuzzcheck_common v0.12.0
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(no_coverage)]
[INFO] [stdout]   |            ^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: renamed to `coverage_attribute`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: attributes on expressions are experimental
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:193:13
[INFO] [stdout]     |
[INFO] [stdout] 193 |             #[no_coverage]
[INFO] [stdout]     |             ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #15701 <https://github.com/rust-lang/rust/issues/15701> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: attributes on expressions are experimental
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:211:17
[INFO] [stdout]     |
[INFO] [stdout] 211 |                 #[no_coverage]
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #15701 <https://github.com/rust-lang/rust/issues/15701> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: attributes on expressions are experimental
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:215:17
[INFO] [stdout]     |
[INFO] [stdout] 215 |                 #[no_coverage]
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #15701 <https://github.com/rust-lang/rust/issues/15701> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: attributes on expressions are experimental
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:222:13
[INFO] [stdout]     |
[INFO] [stdout] 222 |             #[no_coverage]
[INFO] [stdout]     |             ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #15701 <https://github.com/rust-lang/rust/issues/15701> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: attributes on expressions are experimental
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:233:13
[INFO] [stdout]     |
[INFO] [stdout] 233 |             #[no_coverage]
[INFO] [stdout]     |             ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #15701 <https://github.com/rust-lang/rust/issues/15701> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: attributes on expressions are experimental
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:244:13
[INFO] [stdout]     |
[INFO] [stdout] 244 |             #[no_coverage]
[INFO] [stdout]     |             ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #15701 <https://github.com/rust-lang/rust/issues/15701> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: attributes on expressions are experimental
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:255:13
[INFO] [stdout]     |
[INFO] [stdout] 255 |             #[no_coverage]
[INFO] [stdout]     |             ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #15701 <https://github.com/rust-lang/rust/issues/15701> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: attributes on expressions are experimental
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:266:13
[INFO] [stdout]     |
[INFO] [stdout] 266 |             #[no_coverage]
[INFO] [stdout]     |             ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #15701 <https://github.com/rust-lang/rust/issues/15701> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: attributes on expressions are experimental
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:276:21
[INFO] [stdout]     |
[INFO] [stdout] 276 |                     #[no_coverage]
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #15701 <https://github.com/rust-lang/rust/issues/15701> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: attributes on expressions are experimental
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:288:21
[INFO] [stdout]     |
[INFO] [stdout] 288 |                     #[no_coverage]
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #15701 <https://github.com/rust-lang/rust/issues/15701> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: attributes on expressions are experimental
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:305:21
[INFO] [stdout]     |
[INFO] [stdout] 305 |                     #[no_coverage]
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #15701 <https://github.com/rust-lang/rust/issues/15701> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: attributes on expressions are experimental
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:314:17
[INFO] [stdout]     |
[INFO] [stdout] 314 |                 #[no_coverage]
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #15701 <https://github.com/rust-lang/rust/issues/15701> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `no_coverage` in this scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:35:7
[INFO] [stdout]    |
[INFO] [stdout] 35 |     #[no_coverage]
[INFO] [stdout]    |       ^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `coverage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `no_coverage` in this scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:87:3
[INFO] [stdout]    |
[INFO] [stdout] 87 | #[no_coverage]
[INFO] [stdout]    |   ^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `coverage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `no_coverage` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:180:7
[INFO] [stdout]     |
[INFO] [stdout] 180 |     #[no_coverage]
[INFO] [stdout]     |       ^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `coverage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `no_coverage` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:193:15
[INFO] [stdout]     |
[INFO] [stdout] 193 |             #[no_coverage]
[INFO] [stdout]     |               ^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `coverage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `no_coverage` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:211:19
[INFO] [stdout]     |
[INFO] [stdout] 211 |                 #[no_coverage]
[INFO] [stdout]     |                   ^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `coverage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `no_coverage` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:215:19
[INFO] [stdout]     |
[INFO] [stdout] 215 |                 #[no_coverage]
[INFO] [stdout]     |                   ^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `coverage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `no_coverage` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:222:15
[INFO] [stdout]     |
[INFO] [stdout] 222 |             #[no_coverage]
[INFO] [stdout]     |               ^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `coverage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `no_coverage` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:233:15
[INFO] [stdout]     |
[INFO] [stdout] 233 |             #[no_coverage]
[INFO] [stdout]     |               ^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `coverage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `no_coverage` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:244:15
[INFO] [stdout]     |
[INFO] [stdout] 244 |             #[no_coverage]
[INFO] [stdout]     |               ^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `coverage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `no_coverage` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:255:15
[INFO] [stdout]     |
[INFO] [stdout] 255 |             #[no_coverage]
[INFO] [stdout]     |               ^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `coverage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `no_coverage` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:266:15
[INFO] [stdout]     |
[INFO] [stdout] 266 |             #[no_coverage]
[INFO] [stdout]     |               ^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `coverage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `no_coverage` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:276:23
[INFO] [stdout]     |
[INFO] [stdout] 276 |                     #[no_coverage]
[INFO] [stdout]     |                       ^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `coverage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `no_coverage` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:288:23
[INFO] [stdout]     |
[INFO] [stdout] 288 |                     #[no_coverage]
[INFO] [stdout]     |                       ^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `coverage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `no_coverage` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:305:23
[INFO] [stdout]     |
[INFO] [stdout] 305 |                     #[no_coverage]
[INFO] [stdout]     |                       ^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `coverage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `no_coverage` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:314:19
[INFO] [stdout]     |
[INFO] [stdout] 314 |                 #[no_coverage]
[INFO] [stdout]     |                   ^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `coverage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `no_coverage` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:344:3
[INFO] [stdout]     |
[INFO] [stdout] 344 | #[no_coverage]
[INFO] [stdout]     |   ^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `coverage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `no_coverage` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:411:7
[INFO] [stdout]     |
[INFO] [stdout] 411 |     #[no_coverage]
[INFO] [stdout]     |       ^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `coverage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `no_coverage` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:417:7
[INFO] [stdout]     |
[INFO] [stdout] 417 |     #[no_coverage]
[INFO] [stdout]     |       ^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `coverage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `no_coverage` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:450:7
[INFO] [stdout]     |
[INFO] [stdout] 450 |     #[no_coverage]
[INFO] [stdout]     |       ^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `coverage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 32 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0557, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fuzzcheck_common` (lib) due to 33 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fuzzcheck_mutators_derive` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "617ccf4f768af289f70e8eca38de35f68c707aef725350844b79cd8172231af6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "617ccf4f768af289f70e8eca38de35f68c707aef725350844b79cd8172231af6", kill_on_drop: false }`
[INFO] [stdout] 617ccf4f768af289f70e8eca38de35f68c707aef725350844b79cd8172231af6
[INFO] testing fuzzcheck_json_string_generator-0.1.0 against beta-2023-12-22 for beta-1.76-1
[INFO] extracting crate fuzzcheck_json_string_generator 0.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate fuzzcheck_json_string_generator 0.1.0 on toolchain beta-2023-12-22
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fuzzcheck_json_string_generator 0.1.0
[INFO] finished tweaking crates.io crate fuzzcheck_json_string_generator 0.1.0
[INFO] tweaked toml for crates.io crate fuzzcheck_json_string_generator 0.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2b6a4399097db7ad74e37e508247b2a8a36d4703307ee7774c72dc5e909136fa
[INFO] running `Command { std: "docker" "start" "-a" "2b6a4399097db7ad74e37e508247b2a8a36d4703307ee7774c72dc5e909136fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2b6a4399097db7ad74e37e508247b2a8a36d4703307ee7774c72dc5e909136fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b6a4399097db7ad74e37e508247b2a8a36d4703307ee7774c72dc5e909136fa", kill_on_drop: false }`
[INFO] [stdout] 2b6a4399097db7ad74e37e508247b2a8a36d4703307ee7774c72dc5e909136fa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 562a2a116d3ffaba864dc68950f86c32b071c21190b7df62cf48017221778848
[INFO] running `Command { std: "docker" "start" "-a" "562a2a116d3ffaba864dc68950f86c32b071c21190b7df62cf48017221778848", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]    Compiling unicode-width v0.1.11
[INFO] [stderr]    Compiling memchr v2.7.1
[INFO] [stderr]    Compiling ahash v0.7.7
[INFO] [stderr]    Compiling getrandom v0.2.11
[INFO] [stderr]    Compiling overload v0.1.1
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]    Compiling md5 v0.7.0
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling fastrand v1.9.0
[INFO] [stderr]    Compiling fuzzcheck_mutators_derive v0.12.0
[INFO] [stderr]    Compiling serde v1.0.194
[INFO] [stderr]    Compiling nu-ansi-term v0.39.0
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_mutators_derive-0.12.0/src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(let_chains)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_mutators_derive-0.12.0/src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(stmt_expr_attributes)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling fuzzcheck_common v0.12.0
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(no_coverage)]
[INFO] [stdout]   |            ^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: renamed to `coverage_attribute`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: attributes on expressions are experimental
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:193:13
[INFO] [stdout]     |
[INFO] [stdout] 193 |             #[no_coverage]
[INFO] [stdout]     |             ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #15701 <https://github.com/rust-lang/rust/issues/15701> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: attributes on expressions are experimental
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:211:17
[INFO] [stdout]     |
[INFO] [stdout] 211 |                 #[no_coverage]
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #15701 <https://github.com/rust-lang/rust/issues/15701> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: attributes on expressions are experimental
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:215:17
[INFO] [stdout]     |
[INFO] [stdout] 215 |                 #[no_coverage]
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #15701 <https://github.com/rust-lang/rust/issues/15701> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: attributes on expressions are experimental
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:222:13
[INFO] [stdout]     |
[INFO] [stdout] 222 |             #[no_coverage]
[INFO] [stdout]     |             ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #15701 <https://github.com/rust-lang/rust/issues/15701> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: attributes on expressions are experimental
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:233:13
[INFO] [stdout]     |
[INFO] [stdout] 233 |             #[no_coverage]
[INFO] [stdout]     |             ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #15701 <https://github.com/rust-lang/rust/issues/15701> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: attributes on expressions are experimental
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:244:13
[INFO] [stdout]     |
[INFO] [stdout] 244 |             #[no_coverage]
[INFO] [stdout]     |             ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #15701 <https://github.com/rust-lang/rust/issues/15701> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: attributes on expressions are experimental
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:255:13
[INFO] [stdout]     |
[INFO] [stdout] 255 |             #[no_coverage]
[INFO] [stdout]     |             ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #15701 <https://github.com/rust-lang/rust/issues/15701> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: attributes on expressions are experimental
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:266:13
[INFO] [stdout]     |
[INFO] [stdout] 266 |             #[no_coverage]
[INFO] [stdout]     |             ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #15701 <https://github.com/rust-lang/rust/issues/15701> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: attributes on expressions are experimental
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:276:21
[INFO] [stdout]     |
[INFO] [stdout] 276 |                     #[no_coverage]
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #15701 <https://github.com/rust-lang/rust/issues/15701> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: attributes on expressions are experimental
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:288:21
[INFO] [stdout]     |
[INFO] [stdout] 288 |                     #[no_coverage]
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #15701 <https://github.com/rust-lang/rust/issues/15701> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: attributes on expressions are experimental
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:305:21
[INFO] [stdout]     |
[INFO] [stdout] 305 |                     #[no_coverage]
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #15701 <https://github.com/rust-lang/rust/issues/15701> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: attributes on expressions are experimental
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:314:17
[INFO] [stdout]     |
[INFO] [stdout] 314 |                 #[no_coverage]
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #15701 <https://github.com/rust-lang/rust/issues/15701> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `no_coverage` in this scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:35:7
[INFO] [stdout]    |
[INFO] [stdout] 35 |     #[no_coverage]
[INFO] [stdout]    |       ^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `coverage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `no_coverage` in this scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:87:3
[INFO] [stdout]    |
[INFO] [stdout] 87 | #[no_coverage]
[INFO] [stdout]    |   ^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `coverage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `no_coverage` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:180:7
[INFO] [stdout]     |
[INFO] [stdout] 180 |     #[no_coverage]
[INFO] [stdout]     |       ^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `coverage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `no_coverage` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:193:15
[INFO] [stdout]     |
[INFO] [stdout] 193 |             #[no_coverage]
[INFO] [stdout]     |               ^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `coverage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `no_coverage` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:211:19
[INFO] [stdout]     |
[INFO] [stdout] 211 |                 #[no_coverage]
[INFO] [stdout]     |                   ^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `coverage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `no_coverage` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:215:19
[INFO] [stdout]     |
[INFO] [stdout] 215 |                 #[no_coverage]
[INFO] [stdout]     |                   ^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `coverage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `no_coverage` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:222:15
[INFO] [stdout]     |
[INFO] [stdout] 222 |             #[no_coverage]
[INFO] [stdout]     |               ^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `coverage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `no_coverage` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:233:15
[INFO] [stdout]     |
[INFO] [stdout] 233 |             #[no_coverage]
[INFO] [stdout]     |               ^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `coverage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `no_coverage` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:244:15
[INFO] [stdout]     |
[INFO] [stdout] 244 |             #[no_coverage]
[INFO] [stdout]     |               ^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `coverage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `no_coverage` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:255:15
[INFO] [stdout]     |
[INFO] [stdout] 255 |             #[no_coverage]
[INFO] [stdout]     |               ^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `coverage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `no_coverage` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:266:15
[INFO] [stdout]     |
[INFO] [stdout] 266 |             #[no_coverage]
[INFO] [stdout]     |               ^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `coverage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `no_coverage` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:276:23
[INFO] [stdout]     |
[INFO] [stdout] 276 |                     #[no_coverage]
[INFO] [stdout]     |                       ^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `coverage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `no_coverage` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:288:23
[INFO] [stdout]     |
[INFO] [stdout] 288 |                     #[no_coverage]
[INFO] [stdout]     |                       ^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `coverage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `no_coverage` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:305:23
[INFO] [stdout]     |
[INFO] [stdout] 305 |                     #[no_coverage]
[INFO] [stdout]     |                       ^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `coverage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `no_coverage` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:314:19
[INFO] [stdout]     |
[INFO] [stdout] 314 |                 #[no_coverage]
[INFO] [stdout]     |                   ^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `coverage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `no_coverage` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:344:3
[INFO] [stdout]     |
[INFO] [stdout] 344 | #[no_coverage]
[INFO] [stdout]     |   ^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `coverage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `no_coverage` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:411:7
[INFO] [stdout]     |
[INFO] [stdout] 411 |     #[no_coverage]
[INFO] [stdout]     |       ^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `coverage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `no_coverage` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:417:7
[INFO] [stdout]     |
[INFO] [stdout] 417 |     #[no_coverage]
[INFO] [stdout]     |       ^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `coverage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `no_coverage` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fuzzcheck_common-0.12.0/src/arg.rs:450:7
[INFO] [stdout]     |
[INFO] [stdout] 450 |     #[no_coverage]
[INFO] [stdout]     |       ^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `coverage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 32 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0557, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fuzzcheck_common` (lib) due to 33 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fuzzcheck_mutators_derive` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "562a2a116d3ffaba864dc68950f86c32b071c21190b7df62cf48017221778848", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "562a2a116d3ffaba864dc68950f86c32b071c21190b7df62cf48017221778848", kill_on_drop: false }`
[INFO] [stdout] 562a2a116d3ffaba864dc68950f86c32b071c21190b7df62cf48017221778848
