[INFO] fetching crate fuzzy_dbscan 0.3.0...
[INFO] checking fuzzy_dbscan-0.3.0 against master#80399064afa4a2cd153f30d02c25f7ea0383ed65 for opaque-soundness-fix
[INFO] extracting crate fuzzy_dbscan 0.3.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate fuzzy_dbscan 0.3.0 on toolchain 80399064afa4a2cd153f30d02c25f7ea0383ed65
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fuzzy_dbscan 0.3.0
[INFO] finished tweaking crates.io crate fuzzy_dbscan 0.3.0
[INFO] tweaked toml for crates.io crate fuzzy_dbscan 0.3.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "fetch" "--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 commandext v0.1.0
[INFO] [stderr]   Downloaded utils v0.0.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2dd447d33611431ed454e3fa5cbfcbff81b242511f275ffdf65cbfeb7af237fe
[INFO] running `Command { std: "docker" "start" "-a" "2dd447d33611431ed454e3fa5cbfcbff81b242511f275ffdf65cbfeb7af237fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2dd447d33611431ed454e3fa5cbfcbff81b242511f275ffdf65cbfeb7af237fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2dd447d33611431ed454e3fa5cbfcbff81b242511f275ffdf65cbfeb7af237fe", kill_on_drop: false }`
[INFO] [stdout] 2dd447d33611431ed454e3fa5cbfcbff81b242511f275ffdf65cbfeb7af237fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=forbid" "-e" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 84252b4c89778c0456b5fee3dcd70c357f217873a1813f22ae5aae0bada76508
[INFO] running `Command { std: "docker" "start" "-a" "84252b4c89778c0456b5fee3dcd70c357f217873a1813f22ae5aae0bada76508", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]    Compiling wasm-bindgen v0.2.92
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_xoshiro v0.1.0
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking walkdir v2.5.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.5
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]     Checking commandext v0.1.0
[INFO] [stderr]     Checking utils v0.0.3
[INFO] [stdout] error: cannot find attribute `experimental` in this scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/utils-0.0.3/src/lib.rs:83:3
[INFO] [stdout]    |
[INFO] [stdout] 83 | #[experimental]
[INFO] [stdout]    |   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `experimental` in this scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/utils-0.0.3/src/lib.rs:77:3
[INFO] [stdout]    |
[INFO] [stdout] 77 | #[experimental]
[INFO] [stdout]    |   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `experimental` in this scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/utils-0.0.3/src/lib.rs:37:3
[INFO] [stdout]    |
[INFO] [stdout] 37 | #[experimental]
[INFO] [stdout]    |   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `experimental` in this scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/utils-0.0.3/src/lib.rs:29:3
[INFO] [stdout]    |
[INFO] [stdout] 29 | #[experimental]
[INFO] [stdout]    |   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `experimental` in this scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/utils-0.0.3/src/lib.rs:13:3
[INFO] [stdout]    |
[INFO] [stdout] 13 | #[experimental]
[INFO] [stdout]    |   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rayon v1.9.0
[INFO] [stdout] error: cannot find attribute `experimental` in this scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/utils-0.0.3/src/empty.rs:63:3
[INFO] [stdout]    |
[INFO] [stdout] 63 | #[experimental]
[INFO] [stdout]    |   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `experimental` in this scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/utils-0.0.3/src/empty.rs:45:3
[INFO] [stdout]    |
[INFO] [stdout] 45 | #[experimental]
[INFO] [stdout]    |   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `experimental` in this scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/utils-0.0.3/src/empty.rs:37:3
[INFO] [stdout]    |
[INFO] [stdout] 37 | #[experimental]
[INFO] [stdout]    |   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `experimental` in this scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/utils-0.0.3/src/empty.rs:29:3
[INFO] [stdout]    |
[INFO] [stdout] 29 | #[experimental]
[INFO] [stdout]    |   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `experimental` in this scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/utils-0.0.3/src/empty.rs:21:3
[INFO] [stdout]    |
[INFO] [stdout] 21 | #[experimental]
[INFO] [stdout]    |   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `experimental` in this scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/utils-0.0.3/src/empty.rs:14:3
[INFO] [stdout]    |
[INFO] [stdout] 14 | #[experimental]
[INFO] [stdout]    |   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `as_slice` found for reference `&String` in the current scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/utils-0.0.3/src/empty.rs:32:14
[INFO] [stdout]    |
[INFO] [stdout] 32 |         self.as_slice().is_empty()
[INFO] [stdout]    |              ^^^^^^^^ method not found in `&String`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0609]: no field `output` on type `Output`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/utils-0.0.3/src/lib.rs:17:36
[INFO] [stdout]    |
[INFO] [stdout] 17 |             match str::from_utf8(p.output.as_slice()).unwrap().trim().parse() {
[INFO] [stdout]    |                                    ^^^^^^ unknown field
[INFO] [stdout]    |
[INFO] [stdout]    = note: available fields are: `status`, `stdout`, `stderr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/utils-0.0.3/src/lib.rs:18:17
[INFO] [stdout]    |
[INFO] [stdout] 17 |             match str::from_utf8(p.output.as_slice()).unwrap().trim().parse() {
[INFO] [stdout]    |                   ----------------------------------------------------------- this expression has type `Result<_, _>`
[INFO] [stdout] 18 |                 Some(i) => i,
[INFO] [stdout]    |                 ^^^^^^^ expected `Result<_, _>`, found `Option<_>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected enum `Result<_, _>`
[INFO] [stdout]               found enum `Option<_>`
[INFO] [stdout] help: try wrapping the pattern in a variant of `Result`
[INFO] [stdout]    |
[INFO] [stdout] 18 |                 Ok(Some(i)) => i,
[INFO] [stdout]    |                 +++       +
[INFO] [stdout] 18 |                 Err(Some(i)) => i,
[INFO] [stdout]    |                 ++++       +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/utils-0.0.3/src/lib.rs:19:17
[INFO] [stdout]    |
[INFO] [stdout] 17 |             match str::from_utf8(p.output.as_slice()).unwrap().trim().parse() {
[INFO] [stdout]    |                   ----------------------------------------------------------- this expression has type `Result<_, _>`
[INFO] [stdout] 18 |                 Some(i) => i,
[INFO] [stdout] 19 |                 None    => panic!("unable to cast nproc output!"),
[INFO] [stdout]    |                 ^^^^ expected `Result<_, _>`, found `Option<_>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected enum `Result<_, _>`
[INFO] [stdout]               found enum `Option<_>`
[INFO] [stdout] help: try wrapping the pattern in a variant of `Result`
[INFO] [stdout]    |
[INFO] [stdout] 19 |                 Ok(None)    => panic!("unable to cast nproc output!"),
[INFO] [stdout]    |                 +++    +
[INFO] [stdout] 19 |                 Err(None)    => panic!("unable to cast nproc output!"),
[INFO] [stdout]    |                 ++++    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0609]: no field `output` on type `Output`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/utils-0.0.3/src/lib.rs:41:54
[INFO] [stdout]    |
[INFO] [stdout] 41 |             let mut res =  String::from_utf8_lossy(o.output.as_slice());
[INFO] [stdout]    |                                                      ^^^^^^ unknown field
[INFO] [stdout]    |
[INFO] [stdout]    = note: available fields are: `status`, `stdout`, `stderr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 16 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0599, E0609.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `utils` (lib) due to 17 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "84252b4c89778c0456b5fee3dcd70c357f217873a1813f22ae5aae0bada76508", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84252b4c89778c0456b5fee3dcd70c357f217873a1813f22ae5aae0bada76508", kill_on_drop: false }`
[INFO] [stdout] 84252b4c89778c0456b5fee3dcd70c357f217873a1813f22ae5aae0bada76508
