[INFO] fetching crate solitaire-client 0.0.1...
[INFO] checking solitaire-client-0.0.1 against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] extracting crate solitaire-client 0.0.1 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate solitaire-client 0.0.1 on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate solitaire-client 0.0.1
[INFO] finished tweaking crates.io crate solitaire-client 0.0.1
[INFO] tweaked toml for crates.io crate solitaire-client 0.0.1 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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] ca277edeab2b842f481eed9c60c87bd4dcffa27427c8a9cdbc941505966bea9d
[INFO] running `Command { std: "docker" "start" "-a" "ca277edeab2b842f481eed9c60c87bd4dcffa27427c8a9cdbc941505966bea9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ca277edeab2b842f481eed9c60c87bd4dcffa27427c8a9cdbc941505966bea9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca277edeab2b842f481eed9c60c87bd4dcffa27427c8a9cdbc941505966bea9d", kill_on_drop: false }`
[INFO] [stdout] ca277edeab2b842f481eed9c60c87bd4dcffa27427c8a9cdbc941505966bea9d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 956f13936b2091fbac01bf687d1dd75b15aaf46c7709a072f280142a8056b28f
[INFO] running `Command { std: "docker" "start" "-a" "956f13936b2091fbac01bf687d1dd75b15aaf46c7709a072f280142a8056b28f", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.78
[INFO] [stderr]    Compiling matches v0.1.9
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling bumpalo v3.8.0
[INFO] [stderr]    Compiling unicode-bidi v0.3.7
[INFO] [stderr]    Compiling wasm-bindgen v0.2.78
[INFO] [stderr]    Compiling percent-encoding v2.1.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling anyhow v1.0.48
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]    Compiling maud_htmlescape v0.17.1
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]    Compiling tinyvec v1.5.1
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]    Compiling form_urlencoded v1.0.1
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling wasm-bindgen-test-macro v0.3.28
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]     Checking serde_json v1.0.72
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]    Compiling derive_more v0.99.16
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.78
[INFO] [stderr]    Compiling jobserver v0.1.24
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling unicode-normalization v0.1.19
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.78
[INFO] [stderr]    Compiling libz-sys v1.1.3
[INFO] [stderr]    Compiling libgit2-sys v0.9.2
[INFO] [stderr]    Compiling idna v0.2.3
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.78
[INFO] [stderr]    Compiling url v2.2.2
[INFO] [stderr]    Compiling maud_macros v0.21.0
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]     Checking maud v0.21.0
[INFO] [stderr]     Checking js-sys v0.3.55
[INFO] [stderr]     Checking console_error_panic_hook v0.1.7
[INFO] [stderr]    Compiling git2 v0.10.2
[INFO] [stderr]    Compiling built v0.3.2
[INFO] [stderr]     Checking wasm-bindgen-futures v0.4.28
[INFO] [stderr]     Checking web-sys v0.3.55
[INFO] [stderr]     Checking wasm-bindgen-test v0.3.28
[INFO] [stderr]    Compiling solitaire-core v0.0.1
[INFO] [stdout] error[E0635]: unknown feature `option_expect_none`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/solitaire-core-0.0.1/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(option_expect_none)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `solitaire-core` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "956f13936b2091fbac01bf687d1dd75b15aaf46c7709a072f280142a8056b28f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "956f13936b2091fbac01bf687d1dd75b15aaf46c7709a072f280142a8056b28f", kill_on_drop: false }`
[INFO] [stdout] 956f13936b2091fbac01bf687d1dd75b15aaf46c7709a072f280142a8056b28f