[INFO] fetching crate rustimate-client 0.1.0...
[INFO] testing rustimate-client-0.1.0 against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530
[INFO] extracting crate rustimate-client 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate rustimate-client 0.1.0 on toolchain 99e3aef02079e9c10583638520cd0c134dc3a01d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rustimate-client 0.1.0
[INFO] finished tweaking crates.io crate rustimate-client 0.1.0
[INFO] tweaked toml for crates.io crate rustimate-client 0.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "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" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8c83264db10aa9aa240bf59e10491fc0a8402cb3cf4d82ebef786ad68ff2813e
[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" "8c83264db10aa9aa240bf59e10491fc0a8402cb3cf4d82ebef786ad68ff2813e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8c83264db10aa9aa240bf59e10491fc0a8402cb3cf4d82ebef786ad68ff2813e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c83264db10aa9aa240bf59e10491fc0a8402cb3cf4d82ebef786ad68ff2813e", kill_on_drop: false }`
[INFO] [stdout] 8c83264db10aa9aa240bf59e10491fc0a8402cb3cf4d82ebef786ad68ff2813e
[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" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "build" "--frozen" "--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] 85b27e264f6f9218dec3cc8b235bc9b73ce49612b7054df1e70d33db8332712b
[INFO] running `Command { std: "docker" "start" "-a" "85b27e264f6f9218dec3cc8b235bc9b73ce49612b7054df1e70d33db8332712b", kill_on_drop: false }`
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.74
[INFO] [stderr]    Compiling bumpalo v3.7.0
[INFO] [stderr]    Compiling wasm-bindgen v0.2.74
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling maud_htmlescape v0.17.0
[INFO] [stderr]    Compiling instant v0.1.9
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling maud_macros v0.21.0
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.74
[INFO] [stderr]    Compiling maud v0.21.0
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.74
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling derive_more v0.99.14
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.74
[INFO] [stderr]    Compiling js-sys v0.3.51
[INFO] [stderr]    Compiling console_error_panic_hook v0.1.6
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling web-sys v0.3.51
[INFO] [stderr]    Compiling wasm-bindgen-futures v0.4.24
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stderr]    Compiling built v0.3.2
[INFO] [stderr]    Compiling rustimate-core v0.1.0
[INFO] [stdout] error[E0635]: unknown feature `option_expect_none`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustimate-core-0.1.0/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 `rustimate-core`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "85b27e264f6f9218dec3cc8b235bc9b73ce49612b7054df1e70d33db8332712b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85b27e264f6f9218dec3cc8b235bc9b73ce49612b7054df1e70d33db8332712b", kill_on_drop: false }`
[INFO] [stdout] 85b27e264f6f9218dec3cc8b235bc9b73ce49612b7054df1e70d33db8332712b